A Phase 2b Randomised, Double Blind, Placebo-Controlled, Parallel Arm, Multi-Centre Study to Assess Efficacy and Safety of Multiple Dose Levels of AZD7594 DPI Given Once Daily for Twelve Weeks, Compared to Placebo, in Asthmatics Symptomatic on Low Dose ICS
Phase: PHASE2
Conditions: Asthma
Sponsor: AstraZeneca

Clinical Study Protocol - ANGEL
Template Version 18.0
Template Form Doc ID: LDMS_001_00026737
Parent Doc ID: SOP AZDoc0018580
Clinical Study Protocol 
Drug Substance
AZD7594
Study Code
D3741C00007
Version
2.0
Date
26 April 2019
A Phase 2b Randomised, Double-Blind, Placebo-Controlled, Parallel Arm, 
Multi-Centre Study to Assess Efficacy and Safety of Multiple Dose Levels of 
AZD7594 DPI Given Once Daily for Twelve Weeks, Compared to Placebo, in 
Asthmatics Symptomatic on Low Dose ICS
Sponsor:
AstraZeneca AB
151 85 Södertälje
Sweden
EudraCT number: 2017-002483-40

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
2 (122)
VERSION HISTORY
Version 2.0, 26 April 2019
The primary reasons for amending this protocol are to:

Delete peak Forced Expiratory Volume in 1 Second (FEV1) from the secondary 
efficacy endpoints as it was added in error and this endpoint is not measured.

Update the study period.

Update the inclusion criteria to include only patients with body mass index 
(BMI) ≤35.

Delete the expected number of patients in the United States (US) versus non-US 
sites as the number of patients in the US sites might be less than originally 
planned.

Remove interim futility analysis as it is determined no interim futility analysis is 
to be conducted. Patient recruitment into the study has been faster than planned 
and all patients are expected to be enrolled before the time point at which the 
interim analysis was planned to be completed. Many patients will also have 
completed treatment at that timepoint. The value of the futility analysis has 
therefore been determined to be limited.

Incorporate the updated Hy’s Law (Version 2.0, dated 10 January 2019) in the 
Clinical Study Protocol Appendix D.
All changes made to specific sections in the protocol were also implemented elsewhere in 
the protocol and in the synopsis, where applicable. Major changes to the protocol are 
summarised below:
Section 1.4 (Study design), Section 3.1 (Inclusion criteria), Section 4.1.3 (Visit 3 
[Randomisation Visit] [Day 1, within 21 to 28 days after Visit 1]), and Section 7.2.2 
(Run-in Period):
Specified the inclusion criterion #7 (pre-bronchodilator FEV1 at Visit 3 between 40% and 
90% predicted) only needs to be fulfilled at either −45 or −15 minutes pre-dose.
Section 2.1 (Primary objective) and Section 8.5.3.2 (Secondary efficacy variables):
Deleted “change from baseline in peak FEV1 at Weeks 2, 4, 8, 12 and average over the 
Treatment Period” from the secondary efficacy endpoints. The Peak FEV1 endpoint has 
been removed from the study protocol as it was added in error and this endpoint is not 
measured.
Section 2.2 (Secondary objectives), Section 5.2.3 (ECG), and Section 8.5.6 (Analysis of 
safety outcomes):

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
3 (122)
Deleted QT interval corrected using Bazett’s formula (QTcB) as it will no longer be 
presented as part of summary and analysis of electrocardiogram (ECG). Added appropriate 
ECG parameters as described in Section 5.2.3.
Section 3.1 (Inclusion criteria):
Updated the inclusion criteria #2 to include only patients with BMI ≤35, considering 
obesity may impact asthma symptoms and asthma control and also could be a confounding 
factor in efficacy endpoints and patient safety assessment.
Section 3.2 (Exclusion criteria):
Clarified the exclusion criterion #3 that patients with current sleep apnea are excluded. 
Clarified the exclusion criterion #21 for alcohol and drug abuse.
Section 3.6 (Methods for assigning treatment groups):
Deleted the expected number of patients in the US versus non-US sites as the number of 
patients in the US sites might be less than originally planned.
Updated the personnel who receive the randomisation list as the interim analysis will not be 
conducted.
Section 3.9 (Restrictions):
Clarified the required treatments for postmenopausal patients.
Section 3.10 (Discontinuation of Investigational Product):
Clarified that the patients will be discontinued when specified criteria are met.
Section 4 (Study plan and timing of procedures), Table 2 (Study plan detailing the 
procedures):
Updated table footnote to clarify that Visit 3 baseline data will be collected before finishing 
cortisol collection within -2 and 0 h pre-dose.
Updated table footnote a to add the restriction for performing Visit 2 related procedures.
Updated table footnote m to add the allowed time window for performing reversibility 
testing.
Updated table footnote n to clarify the number of measurements and the timing along with
the allowed time windows for performing spirometry tests at specified visits.
Added table footnote to clarify that peak expiratory flow will be measured by the patient at 
home after completing the morning and evening diary using a peak flow meter.
Section 4.1.1 (Visit 1 [Screening Visit] [within 21 to 28 days before Visit 3]):
Deleted measure peak expiratory flow as it will be measured by the patient at home.
Section 4.1.3 (Visit 3 [Randomisation Visit] [Day 1, within 21 to 28 days after Visit 1]), 
Section 4.2.1 (Visits 4, 5 and 6 [Days 15, 29, and 57 ± 1 day]), Section 4.2.2 (Visit 7 
[Day 85± 1 day], End of treatment), Section 4.2.3 (Early Termination Visit), and 
Section 5.1.1.1 (Pulmonary function test [spirometry]):
Clarified the number of measurement and timing of spirometry.

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
4 (122)
Section 5.1.2 (Secondary efficacy assessments) and Section 7.5 (Compliance):
Clarified the compliance rate in the Run-in Period and the expected compliance rate in the 
Treatment Period.
Section 5.1.2.3 (Peak expiratory flow):
Clarified that peak expiratory flow will be measured at home after completing the morning 
and evening diary.
Section 5.8 (Exploratory objectives: Forced oscillation technique):
Clarified that Forced Oscillation Technique (FOT) evaluation and training will take place at 
Visit 1, instead of Visit 2.
Section 5.9 (Exploratory objectives: Real-time occurrence of CompEx events [voluntary 
US-specific sub-study]):
Specified that only English-language version of the application is provided for the 
US-specific sub-study.
Section 7.7 (Concomitant and other treatments):
Deleted the description that rescue medication should be recorded as concomitant 
medication, to avoid misunderstanding that it should be recorded in eCRF; rescue 
medication will be recorded in the eDiary as described in Section 7.7.1.
Section 8.4.7 (Interim futility analysis):
Removed the interim futility analysis as it is determined no interim futility analysis is to be 
conducted. Patient recruitment into the study has been faster than planned and all patients 
are expected to be enrolled before the time point at which the interim analysis was planned 
to be completed. Many patients will also have completed treatment at that timepoint. The 
value of the futility analysis has therefore been determined to be limited.
Section 8.5.1 (Demographic and baseline characteristics):
Clarified that the analysis set used for demographic and baseline characteristics is Full 
Analysis Set (FAS). 
Clarified the baseline asthma severity is assessed using the pre- Short-Acting Beta2
Agonists (SABA) value at Visit 2, instead of pre-bronchodilator value at Visit 1.
The number of patients who met the reversibility criteria was deleted.
Section 8.5.4.2 (Statistical analysis of the Pharmacokinetic Parameters) and Section 8.5.6 
(Analysis of safety outcomes):
“Individual plasma concentrations versus time on Week 12 (Day 84) plotted on linear and 
semi-logarithmic scale with all treatments overlaid on the same plot and separate plots for 
each patient” will no longer be provided as part of pharmacokinetics (PK) analysis. 
Geometric standard deviation (SD) will no longer be presented on figures of geometric 
mean for concentration-time data as part of the PK analysis.
Section 8.5.7.1 (Additional analysis) 
Clarified the definition of ACQ-5 responder: a patient with ACQ-5 score decrease from 

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
5 (122)
baseline of ≥0.5 in ACQ-5, instead of a patient with a change from baseline of ≥0.5 in 
ACQ-5.
Section 9.3 (Study timetable and end of study):
Deleted the description on the futility criteria as it is determined no interim futility analysis 
is to be conducted.
Appendix D (Actions Required in Cases of Increases in Liver Biochemistry and Evaluation 
of Hy’s Law):
Incorporated the updated Hy’s Law (Version 2.0, dated 10 January 2019) in the Clinical 
Study Protocol Appendix D.
Minor changes included: 
Updated the list of abbreviation accordingly.
Added ethnicity and country to demographic and baseline characteristics, and region to 
subgroup analysis. 
Version 1.0, 25 May 2018
Initial creation

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
6 (122)
This Clinical Study Protocol has been subject to a peer review according to AstraZeneca 
standard procedures. The Clinical Study Protocol is publicly registered and the results are 
disclosed and/or published according to the AstraZeneca Global Policy on Bioethics and in 
compliance with prevailing laws and regulations.

Clinical Study Protocol Synopsis
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
7 (122)
CLINICAL STUDY PROTOCOL SYNOPSIS
A Phase 2b Randomised, Double-Blind, Placebo-Controlled, Parallel Arm, 
Multi-Centre Study to Assess Efficacy and Safety of Multiple Dose Levels 
of AZD7594 DPI Given Once Daily for Twelve Weeks, Compared to 
Placebo, in Asthmatics Symptomatic on Low Dose ICS
International Co-ordinating Investigator
 
Study centre(s) and number of patients planned
It is planned that approximately 714 patients with asthma symptomatic on low dose inhaled 
corticosteroid (ICS) will be randomised into the study, 102 patients per arm.
The study will be conducted in approximately 100 centres in 8 countries in Europe, United 
States (US), South Africa, and Japan.
Study period
Phase of development
Estimated date of first patient enrolled
Q1 2019
Phase 2b
Estimated date of last patient completed
Q3 2019
Phase 2b
Study design
This is a randomised, placebo-controlled, double-blind study with an open-label active 
comparator ICS (fluticasone furoate [FF]) arm to assess the efficacy and safety of AZD7594
administered once daily (QD) by inhalation at multiple dose levels over a 12-week treatment 
period to patients with asthma symptomatic on low dose ICS.
The primary objective is to determine the efficacy of AZD7594 as assessed by change from 
baseline in trough forced expiratory volume in 1 second (FEV1) at Week 12, when compared 
to placebo, with the aim of selecting doses to advance to Phase 3 studies. Secondary efficacy 
assessments include asthma control questionnaire (ACQ-5), fractional exhaled nitric oxide 
(FENO), forced vital capacity (FVC), peak expiratory flow (PEF), rescue medication use, 
night-time awakenings, daily asthma symptoms as recorded in an electronic diary (eDiary), 
and “CompEx”, a composite endpoint for severe exacerbations of asthma which combines
severe exacerbations and diary events (ie, combination of eDiary variables).
Other secondary objectives of the study include the description of the (steady state) 
pharmacokinetics (PK) and the pharmacodynamics (assessment of cortisol suppression) of 
AZD7594 in a subset of patients. Only selected sites that are capable of doing quality PK (and 
PPD

Clinical Study Protocol Synopsis
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
8 (122)
cortisol) sampling will participate in the PK subset. The safety and tolerability of AZD7594 
will also be evaluated in relation to placebo.
Exploratory objectives will include the use of Forced Oscillation Technique (FOT) (as a 
measure of small airways involvement) for patients in the US and Europe, a genomics (Gx) 
analysis
.
The study will consist of a Run-in Period (Visits 1 to 3), a Treatment Period (Visits 4 to 7) and 
a Follow-up Contact (Visit 8).
In addition, all patients will be provided a short-acting beta2 agonist (SABA)
(salbutamol/albuterol) as rescue medication for use throughout the run-in and treatment 
periods.
All patients will sign informed consent form (ICF) prior to participating in any study-specific 
procedures.
The Run-in Period will typically last 21-28 days (up to a maximum of 35 days, if Visit 3 is 
repeated) and will consist of 3 visits: a Screening Visit (Visit 1), a Reversibility Visit (Visit 2) 
and a Randomisation Visit (Visit 3). Patients found to be eligible at Visit 1 (Screening Visit)
will discontinue all asthma medications and switch to low dose budesonide (200 µg twice a 
day [BID] in Europe and 180 µg BID in US) and rescue medication will be taken as needed. 
Visit 1 (Screening Visit) and Visit 2 can occur the same day, unless the patient is taking a 
long-acting beta agonist (LABA), fixed dose combination ICS/LABA treatment or a 
long-acting muscarinic antagonist (LAMA), in which case the patient will return for Visit 2
between 2 to 7 days after Visit 1 to allow sufficient time to wash-out their asthma 
medications.
Visit 2 will occur within 7 days of Visit 1 and will assess reversibility (increase of FEV1
≥12% and ≥200 mL after administration of a short-acting bronchodilator). All patients should 
refrain from taking SABA for 6 hours prior to reversibility testing. If a patient does not meet 
reversibility criteria, Visit 2 can be repeated once within 1 week. If reversibility criteria are 
not achieved at the repeat attempt, the patient will be discontinued from the study.
If reversibility criteria are met at Visit 2, patients will proceed to Visit 3. Randomisation will 
occur at Visit 3, within 21 to 28 days of Visit 1. At Visit 3, patients who remain symptomatic 
while on low dose budesonide (as assessed by asthma mean symptom score >1 over the 
previous 7 days or use of a SABA on ≥3 days of the previous 7 days) and meet FEV1 criteria 
(≥40% to ≤90% predicted at either −45 or −15 minutes pre-dose) will be randomised to one of 
7 possible treatment arms (see below). If patients do not meet eligibility (especially symptom 
criteria or lung function criteria), Visit 3 can be repeated once within 1 week. If this occurs, 
additional budesonide may need to be provided to the patient to ensure that the patient has 
run-in medication (budesonide) available throughout the run-in period.
Patients who are uncontrolled during the Run-in Period (as per an ACQ-5 score of ≥3 or daily 
rescue medication (SABA) use of ≥12 puffs for ≥3 consecutive days) or those with <80% 
CCI

Clinical Study Protocol Synopsis
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
9 (122)
eDiary compliance during Run-in Period will be discontinued from the study. Once a patient 
has failed screening, re-screening will not be allowed.
The Treatment Period will include 4 more visits (Visit 4 to Visit 7) and will last 12 weeks.
At Visit 7, patients will stop investigational treatment and change back to their regular asthma 
therapy. Each patient will receive one of the following 7 possible treatments (for AZD7594, 
nominal strength and delivered dose have been included below):

AZD7594 DPI 55μg [nominal strength]/50 µg [delivered dose] (QD)

AZD7594 DPI 99 µg/90 µg QD

AZD7594 DPI 198 µg/180 µg QD

AZD7594 DPI 396 µg/360 µg QD 

AZD7594 DPI 792 µg/720 µg QD

Placebo for AZD7594 QD

FF 100 µg QD (open-label) 
During the follow-up period, there will be a follow-up telephone contact (Visit 8) 1 week after 
Visit 7. A complete listing of assessments and timing is included in the Study Plan in the main 
body of the Clinical Study Protocol.
The “end of study” is the date when all patients randomised in the study perform the last 
contact (either Visit 7 or Visit 8) and will be communicated to Regulatory Authorities and 
Ethics Committees on due time according to local regulations.

Clinical Study Protocol Synopsis
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
10 (122)
Study objectives
Primary Objective:
Outcome Measure:
To investigate the clinical efficacy of
AZD7594 at different dose levels in 
asthmatics symptomatic on low dose ICS
Primary efficacy endpoint:

Change from baseline in trough FEV1 at 
Week 12 
Secondary efficacy endpoints:

Change from baseline in trough FEV1 at 
Weeks 2, 4, 8, and average over the 
treatment period

Change from baseline in FENO at Weeks 2, 
4, 8, 12, and average over the treatment 
period (analysis to be done on natural 
log-scale and results back-transformed to 
linear scale)

Change from baseline in trough FVC at 
Week 12 and average over the treatment 
period

Change from baseline in ACQ-5 at Week 12 
and average over the treatment period

Change from baseline in average morning 
PEF over the treatment period

Change from baseline in average evening 
PEF over the treatment period

Change from baseline in average daily use of 
rescue medication over the treatment period

Change from baseline in percent night-time
awakening days over the treatment period

Change from baseline in average daily 
asthma symptom score over the treatment 
period

Change from baseline in percent asthma 
control days over the treatment period

Change from baseline in percent rescue-free 
days over the treatment period

Change from baseline in percent 
symptom-free days over the treatment period

Time to first CompEx event, time to 
recurrent CompEx event, and CompEx event 
rate

Clinical Study Protocol Synopsis
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
11 (122)
Secondary Objectives:
Outcome Measure:
To describe the (steady state)
pharmacokinetics (PK) of AZD7594 in a 
subset of asthmatics symptomatic on low 
dose ICS
AZD7594 plasma concentration and (steady state) 
PK parameters (Css,max, Css,min, tss,max, AUClast, 
AUCτ, Css, avg, Css,max/D, and AUCτ/D and 
%Fluctuation) will be derived
To describe the pharmacodynamics of 
AZD7594 by measuring cortisol suppression 
in a subset of asthmatics symptomatic on 
low dose ICS
Area under the plasma cortisol concentration-time 
curve from zero to 24 hours after dosing 
(AUEC(0-24)), compared to placebo
To evaluate the safety and tolerability of 
AZD7594 in relation to placebo in 
asthmatics symptomatic on low dose ICS
Adverse events (AEs)/Serious adverse events 
(SAEs)/Discontinuation of IP due to AE (DAEs)
Vital signs 
Clinical chemistry/haematology parameters 
Electrocardiogram (ECG)a
a
The following parameters will be recorded for each ECG: date and time, HR (beats/min), RR interval, PR 
interval, QRS interval, QT interval (ms), QT interval corrected using Fridericia’s formula (QTcF) (ms), and 
overall evaluation.
AUCτ, Area under the plasma concentration-curve within a dosing interval; AUCτ/D, Dose normalised AUCτ; 
AUClast, area under the plasma concentration-curve from time zero to the time of last quantifiable analyte 
concentration; CompEx, Composite endpoint for severe exacerbations of asthma; Css,avg, Average plasma 
concentration during a dosing interval at steady state, estimated as AUCτ/24; Css,max, observed maximum 
concentration at steady state, taken directly from the individual concentration-time curve; Css,max/D, Dose 
normalised Css,max; Css,min, observed minimum concentration at the end of the dosing interval; tss,max, time to 
maximum concentration at steady state, taken directly from the individual concentration-time curve. 
Exploratory Objectives:
Outcome Measure:
To obtain (optional) blood samples for future 
Gx research aiming to identify/explore 
biomarkers or genetic variations that may 
affect the efficacy, pharmacodynamics, 
safety and tolerability profile related to 
AZD7594 treatment in asthmatics 
symptomatic on low dose ICS
DNA from whole blood
To evaluate the effect of AZD7594 on small 
airways obstruction in asthmatics 
symptomatic on low dose ICS
Change from baseline up to Week 12 in measures 
of airway resistance and reactance, including 
R5-R20, as evaluated by FOT
 
FOT, forced oscillation technique; Gx, genomics; ICS, inhaled corticosteroid
Target patient population
This study will be performed in men and non-pregnant, non-lactating women, all between 
18 and 85 years of age with body mass index (BMI) ≤35 with asthma symptomatic on low 
dose ICS and bronchodilator reversibility (increase of FEV1 ≥12% and ≥200 mL after 
administration of a short-acting bronchodilator).
CCI

Clinical Study Protocol Synopsis
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
12 (122)
Duration of treatment
The study will consist of a 21-28 days (3-4-week and no longer than 5 weeks) Run-in Period 
(Visits 1 to 3) followed by a 12-week Treatment Period (Visits 4 to 7) and a 1-week follow-up 
contact (Visit 8). 
The total duration of study will be between 113 - 135 days for each individual patient and is 
planned to run approximately 12 months (it should not exceed 18 months).
Investigational product, dosage and mode of administration
Investigational product
Dosage form and strength 
(nominal dose/delivered dose)
Administration route and 
dosing frequency
AZD7594
Inhalation powder (55 μg/50 μg)
Oral inhalation (by SD3FL 
inhaler, DPI) QD
Inhalation powder (99 μg/90 μg)
Inhalation powder (198 μg/180 μg)
Inhalation powder (396 μg/360 μg)
Inhalation powder (792 μg/720 μg)
Placebo to AZD7594
Inhalation powder
Oral inhalation (by SD3FL 
inhaler, DPI) QD
Fluticasone furoate
Inhalation powder (100 μg per 
nominal dose)
Oral inhalation (by ELLIPTA 
inhaler, DPI) QD
DPI, dry powder inhaler; IP, investigational product; QD, once a day
AstraZeneca will provide the test IPs, ie, AZD7594, fluticasone furoate, and placebo
Non-Investigational products
Product name
Dosage form and strength
Administration route and 
dosing frequency
Budesonide (run-in 
medication)
Inhalation powder
200 μg per nominal dose (ex-US)
180 µg per nominal dose (US)
Oral inhalation by DPI, BID, 
eg, Pulmicort® Turbohaler®
200 μg (AstraZeneca)
SABA 
(salbutamol/albuterol), 
rescue medication
Inhalation aerosol
100 μg per nominal dose
90 µg per nominal dose (US)
Oral inhalation by MDI, PRN, 
eg, Sultanol® Dosier-Aerosol 
100 µg (GlaxoSmithKline), 
Ventolin® Evohaler® 100 µg 
(GlaxoSmithKline)
DPI, dry powder inhaler; BID, twice a day; ex-US, excluding United States; MDI, metered-dose inhaler; PRN, 
as needed; SABA, short-acting beta agonist; US, United States
PAREXEL will source and provide budesonide and salbutamol/albuterol.

Clinical Study Protocol Synopsis
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
13 (122)
Statistical methods
Sample Size Determination
Approximately 102 patients will be randomised to each arm (overall randomisation ratio 
1:1:1:1:1:1:1) in order to ensure at least 86 evaluable patients per arm. This sample size will 
provide at least 80% power to detect a difference in the primary endpoint, ie, a difference of 
175 mL in change from baseline in trough FEV1 at Week 12 between each dose of AZD7594 
and placebo, assuming an inter-patient standard deviation of 405 mL, using a 2-sided test with 
a significance level of 0.05 and with an estimated 15% dropout rate. The targeted total number 
of patients to be randomised is approximately 714 patients.
Interim futility analysis 
Not applicable.
Primary efficacy analysis
The primary variable is the change from baseline in trough FEV1 at Week 12. Baseline for 
FEV1 will be defined as the mean of the 2 measured values for the corresponding variable 
(2 measurements 30 minutes apart, at −45 minutes and −15 minutes, before IP administration), 
on Day 1. Trough will be defined as the mean of the 2 FEV1 measurements 30 minutes apart 
(23 hours after last dose). 
The change from baseline in trough FEV1 will be analysed using a MMRM with treatment, 
visit, treatment by visit interaction and region (US, Japan, and Rest of the World [RoW]) as 
fixed effects, and baseline FEV1 and baseline FEV1 by visit interaction as continuous 
covariates. The within-patient correlation will be modelled using the unstructured covariance 
matrix. The Kenward-Roger approximation will be used to estimate denominator degrees of 
freedom. The main comparisons will be between each AZD7594 dose and placebo at 
Week 12. The comparison between active comparator (FF) and placebo will be used for bench 
marking.
To control type I error rate for the primary efficacy endpoint comparisons at Week 12, a 
sequential hierarchical step-down approach will be used. This approach starts from testing the 
highest dose versus placebo first, using a two-sided alpha of 0.05. If this p-value is ≤0.05 for 
the comparison, then the next highest dose versus placebo will be tested using the same two-
sided alpha of 0.05. This process continues until the first p-value >0.05 occurs or the lowest 
dose versus placebo is tested.
The primary analysis will be based on the full analysis set (FAS) population and additionally 
for sensitivity purposes on the per protocol (PP) population. Further subgroup analyses will be 
done to evaluate treatment effects for trough FEV1 at Week 12.

Clinical Study Protocol Synopsis
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
14 (122)
Secondary efficacy analysis
The following variables are secondary efficacy variables:

Change from baseline in trough FEV1 at Weeks 2, 4, 8, and average over the treatment 
period

Change from baseline in FENO at Weeks 2, 4, 8, 12, and average over the treatment 
period (analysis to be done on natural log-scale and results back-transformed to linear 
scale)

Change from baseline in trough FVC at Week 12 and average over the treatment 
period

Change from baseline in ACQ-5 at Week 12 and average over the treatment period

Change from baseline in average morning PEF over the treatment period

Change from baseline in average evening PEF over the treatment period

Change from baseline in average daily use of rescue medication over the treatment 
period

Change from baseline in percent night-time awakening days over the treatment period

Change from baseline in average daily asthma symptom score over the treatment 
period

Change from baseline in percent asthma control days over the treatment period

Change from baseline in percent rescue-free days over the treatment period

Change from baseline in percent symptom-free days over the treatment period

Time to first CompEx event, time to recurrent CompEx event, and CompEx event rate
Similar mixed models for repeated measures as for the primary variable will be used for the 
analysis at specified visit week. Analysis of covariance (ANCOVA) with treatment and region 
(ie, US, Japan, and RoW) as fixed effects, and baseline as covariate will be used for the 
analysis of average over the treatment period. No multiplicity adjustments will be applied for 
the secondary variables.
CompEx will be analysed with a Cox proportional hazards model, a marginal means/rates 
model, and a negative binomial model for time to first event, time to recurrent event, and 
event rate (due to observation time per patient) respectively, with region and treatment 
included as covariates in all models.

Clinical Study Protocol Synopsis
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
15 (122)
PK analysis
Sampling for PK analysis will be done in a subset of patients. Steady state PK parameters of 
AZD7594 will be derived using non-compartmental methods with Phoenix® WinNonlin® 
Version 6.3 or higher.
A listing of PK blood sample collection times, as well as derived sampling time deviations 
will be provided.
Plasma concentrations will be listed and summarised by treatment using appropriate 
descriptive statistics. Where possible, the following descriptive statistics will be presented: n, 
geometric mean, geometric coefficient of variation, arithmetic mean, arithmetic standard 
deviation (SD), median, minimum and maximum based on the PK analysis set. Plasma 
concentrations that are below lower limit of quantification will be handled as described in the 
Statistical Analysis Plan (SAP).
Combined individual plasma concentration per dose level (spaghetti plots) will be presented in 
linear and semi-logarithmic scale with separate plots for each dose level.
Figures for the geometric mean concentration-time data will be presented for all doses 
overlaid on the same plot, in both a linear and semi-logarithmic scale.
Additional graphical presentations of PK data may be added at the discretion of the PK 
scientist. More details will be provided in the SAP.
All plasma PK parameters will be listed for each patient and summarised by treatment using 
similar descriptive statistics. For tmax only n, median, minimum and maximum will be 
reported.
Data from patients excluded from the PK analysis set will be included in the data listings, but 
not in the descriptive statistics or in the inferential statistics.
Dose proportionality of AZD7594 on Week 12 (Day 84) will be assessed graphically and 
analysed using the power model approach with the natural logarithm of PK parameters (Css,max
and AUCτ) as the dependent variable and the logarithm of the dose as the independent 
variable.
Further details regarding the model specifications will be provided in the SAP.
Pharmacodynamic analysis
As a measure of cortisol suppression, 24-hour plasma cortisol measurements will be 
performed in the same subset of patients as PK sampling and a selected subset of FF treated 
patients. Plasma cortisol will be measured just before and at the end of the Treatment Period.
Measurement before the first dose will serve as a baseline value. Patients will be required to 
stay overnight for 24 hours before IP administration on Day 1 and for 24 hours after the last 
dose on Day 84.

Clinical Study Protocol Synopsis
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
16 (122)
The change from baseline in log-transformed AUEC(0-24) (area under the plasma cortisol 
concentration-time curve from zero to 24 hours after dose) will be analysed by ANCOVA 
approach with treatment as a fixed effect, baseline log AUEC as a covariate, and patient as a 
random effect. The estimated ratio for each AZD7594 arm versus placebo and FF versus 
placebo, and their associated 95% confidence intervals will be presented.
Exploratory analyses
An ACQ-5 responder analysis will be explored based on the percentage of ACQ-5 responders 
at Weeks 2, 4, 8, and 12. An ACQ-5 responder is defined as a patient with a decrease from 
baseline of ≥0.5 in their ACQ-5 score.
Measures of airway resistance and reactance via FOT, 
 
and Gx variables will be analysed at Week 12 by using mixed models for 
repeated measures as for the primary variable.
In addition, dose-response modelling for trough FEV1 and the relationship between AZD7594 
exposure and plasma cortisol AUEC(0-24) may be explored. 
Safety analysis
Safety will be assessed by descriptive analysis of vital signs, ECGs, laboratory assessments 
and AEs reported. 
CCI

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
17 (122)
TABLE OF CONTENTS
PAGE
TITLE PAGE.......................................................................................................1
VERSION HISTORY..........................................................................................2
CLINICAL STUDY PROTOCOL SYNOPSIS ....................................................7
TABLE OF CONTENTS................................................................................... 17
1.
INTRODUCTION ............................................................................................. 28
1.1
Background and rationale for conducting this study ........................................... 28
1.2
Rationale for study design, doses and control groups.......................................... 29
1.3
Benefit/risk and ethical assessment .................................................................... 30
1.4
Study design ...................................................................................................... 31
2.
STUDY OBJECTIVES...................................................................................... 35
2.1
Primary objective............................................................................................... 35
2.2
Secondary objectives.......................................................................................... 36
2.3
Exploratory objectives ....................................................................................... 36
3.
PATIENT SELECTION, ENROLMENT, RANDOMISATION, 
RESTRICTIONS, DISCONTINUATION AND WITHDRAWAL..................... 37
3.1
Inclusion criteria ................................................................................................ 37
3.2
Exclusion criteria ............................................................................................... 38
3.3
Exclusion criteria for the pharmacogenomic part of the study............................. 40
3.4
Patient enrolment and randomisation.................................................................. 40
3.5
Procedures for handling incorrectly enrolled or randomised patients .................. 41
3.6
Methods for assigning treatment groups............................................................. 41
3.7
Methods for ensuring blinding ........................................................................... 42
3.8
Methods for unblinding...................................................................................... 42
3.9
Restrictions........................................................................................................ 43
3.10
Discontinuation of investigational product ......................................................... 45
3.10.1
Procedures for discontinuation of a patient from investigational product ............ 46
3.11
Criteria for withdrawal....................................................................................... 46
3.11.1
Screen failures ................................................................................................... 46
3.11.2
Withdrawal of the informed consent................................................................... 47
3.12
Discontinuation of the study............................................................................... 47

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
18 (122)
4.
STUDY PLAN AND TIMING OF PROCEDURES........................................... 47
4.1
Run-in Period..................................................................................................... 53
4.1.1
Visit 1 (Screening Visit) (within 21 to 28 days before Visit 3)............................ 53
4.1.2
Visit 2 (Reversibility Visit) (within 0 to7 days after Visit 1)............................... 54
4.1.3
Visit 3 (Randomisation Visit) (Day 1, within 21 to 28 days after Visit 1) ........... 54
4.2
Treatment period................................................................................................ 56
4.2.1
Visits 4, 5 and 6 (Days 15, 29, and 57 ± 1 day)................................................... 56
4.2.2
Visit 7 (Day 85± 1 day), End of treatment.......................................................... 57
4.2.3
Early Termination Visit...................................................................................... 58
4.3
Follow-up period................................................................................................ 59
5.
STUDY ASSESSMENTS.................................................................................. 59
5.1
Efficacy assessments.......................................................................................... 59
5.1.1
Primary efficacy assessments............................................................................. 59
5.1.1.1
Pulmonary function test (spirometry) ................................................................. 59
5.1.2
Secondary efficacy assessments ......................................................................... 61
5.1.2.1
Asthma Control Questionnaire-5........................................................................ 62
5.1.2.2
Fractional exhaled nitric oxide ........................................................................... 62
5.1.2.3
Peak expiratory flow .......................................................................................... 62
5.1.2.4
Rescue medication use ....................................................................................... 62
5.1.2.5
Asthma symptom score...................................................................................... 62
5.1.2.6
Night-time awakening........................................................................................ 63
5.2
Secondary objectives: Safety assessments .......................................................... 63
5.2.1
Laboratory safety assessments............................................................................ 63
5.2.2
Physical examination ......................................................................................... 65
5.2.3
ECG................................................................................................................... 65
5.2.4
Vital signs.......................................................................................................... 66
5.2.4.1
Blood pressure ................................................................................................... 66
5.2.5
Adverse events................................................................................................... 67
5.2.6
Unscheduled tests............................................................................................... 67
5.2.7
Repeated tests .................................................................................................... 67
5.3
Reversibility testing ........................................................................................... 67
5.4
Secondary objectives: Pharmacokinetics ............................................................ 67
5.4.1
Collection of samples......................................................................................... 68
5.4.2
Determination of drug concentration.................................................................. 68
5.4.3
Storage and destruction of pharmacokinetic samples.......................................... 68
5.5
Secondary objectives: Pharmacodynamics ......................................................... 68
5.6
Exploratory objectives: Pharmacogenomics sub-study ....................................... 69
5.6.1
Collection of optional genomic samples ............................................................. 69
5.6.2
Storage and destruction of genomic samples ...................................................... 69
5.7
Exploratory objectives: 
....................................................... 69
5.7.1
Storage, re-use and destruction of biological samples......................................... 70
CCI

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
19 (122)
5.7.2
Labelling and shipment of biological samples .................................................... 70
5.7.3
Chain of custody of biological samples .............................................................. 70
5.7.4
Withdrawal of informed consent for donated biological samples........................ 71
5.8
Exploratory objectives: Forced oscillation technique.......................................... 71
6.
SAFETY REPORTING AND MEDICAL MANAGEMENT............................. 72
6.1
Definition of adverse events............................................................................... 72
6.2
Definitions of serious adverse event ................................................................... 72
6.3
Recording of adverse events............................................................................... 73
6.3.1
Time period for collection of adverse events ...................................................... 73
6.3.2
Follow-up of unresolved adverse events............................................................. 73
6.3.3
Variables............................................................................................................ 73
6.3.4
Causality collection............................................................................................ 74
6.3.5
Adverse events based on signs and symptoms.................................................... 75
6.3.6
Adverse events based on examinations and tests ................................................ 75
6.3.7
Hy’s Law ........................................................................................................... 75
6.3.8
Disease under study ........................................................................................... 75
6.4
Reporting of serious adverse events ................................................................... 76
6.5
Overdose............................................................................................................ 76
6.6
Pregnancy .......................................................................................................... 77
6.6.1
Maternal exposure.............................................................................................. 77
6.6.2
Paternal exposure............................................................................................... 78
6.6.3
Time period for the collection of pregnancy information.................................... 78
6.7
Medication error ................................................................................................ 78
6.8
Management of IP related toxicities ................................................................... 79
6.9
Study governance and oversight......................................................................... 79
7.
INVESTIGATIONAL PRODUCT AND OTHER TREATMENTS ................... 80
7.1
Identity of investigational product(s).................................................................. 80
7.2
Dose and treatment regimens ............................................................................. 80
7.2.1
Throughout the study ......................................................................................... 80
7.2.2
Run-in Period..................................................................................................... 80
7.2.3
Treatment period................................................................................................ 81
7.3
Labelling............................................................................................................ 81
7.4
Storage............................................................................................................... 82
7.5
Compliance........................................................................................................ 82
7.6
Accountability.................................................................................................... 82
7.7
Concomitant and other treatments ...................................................................... 82
7.7.1
Other treatment .................................................................................................. 84

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
20 (122)
7.8
Post study access to study treatment................................................................... 85
8.
STATISTICAL ANALYSES............................................................................. 85
8.1
Statistical considerations .................................................................................... 85
8.2
Sample size estimate .......................................................................................... 85
8.3
Definitions of analysis sets................................................................................. 86
8.3.1
Full analysis set.................................................................................................. 86
8.3.2
Safety analysis set.............................................................................................. 86
8.3.3
Pharmacokinetic analysis set.............................................................................. 86
8.3.4
Pharmacodynamic analysis set ........................................................................... 86
8.3.5
Per Protocol set.................................................................................................. 87
8.3.6
Protocol deviations............................................................................................. 87
8.4
Outcome measures for analyses.......................................................................... 87
8.4.1
Primary efficacy variable ................................................................................... 87
8.4.2
Secondary efficacy variables.............................................................................. 88
8.4.3
Pharmacokinetic variables.................................................................................. 88
8.4.4
Pharmacodynamic variables............................................................................... 89
8.4.5
Exploratory variables ......................................................................................... 89
8.4.6
Safety outcomes................................................................................................. 89
8.4.7
Interim futility analysis ...................................................................................... 89
8.5
Methods for statistical analyses.......................................................................... 89
8.5.1
Demographic and baseline characteristics .......................................................... 89
8.5.2
Analyses of prior and concomitant (including rescue medication) ...................... 90
8.5.2.1
Prior medication................................................................................................. 90
8.5.2.2
Concomitant medication .................................................................................... 91
8.5.3
Analysis of the efficacy variable(s) .................................................................... 91
8.5.3.1
Primary efficacy variable ................................................................................... 91
8.5.3.2
Secondary efficacy variables.............................................................................. 93
8.5.4
Analysis of pharmacokinetic variables ............................................................... 94
8.5.4.1
Calculation or derivation of the pharmacokinetic parameters.............................. 94
8.5.4.2
Statistical analysis of the Pharmacokinetic Parameters ....................................... 95
8.5.5
Pharmacodynamic analysis ................................................................................ 95
8.5.5.1
Statistical analysis of the pharmacodynamic parameter ...................................... 96
8.5.6
Analysis of safety outcomes............................................................................... 96
8.5.7
Exploratory analysis........................................................................................... 97
8.5.7.1
Additional analysis............................................................................................. 97
9.
STUDY AND DATA MANAGEMENT............................................................ 98
9.1
Training of study centre staff.............................................................................. 98
9.2
Monitoring of the study...................................................................................... 98
9.2.1
Source data ........................................................................................................ 99
9.2.2
Study agreements............................................................................................... 99
9.2.3
Archiving of study documents............................................................................ 99

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
21 (122)
9.3
Study timetable and end of study........................................................................ 99
9.4
Data management by PAREXEL ....................................................................... 99
9.5
Data management by AstraZeneca ................................................................... 101
10.
ETHICAL AND REGULATORY REQUIREMENTS..................................... 101
10.1
Ethical conduct of the study ............................................................................. 101
10.2
Patient data protection...................................................................................... 101
10.3
Ethics and regulatory review ............................................................................ 101
10.4
Informed consent ............................................................................................. 102
10.5
Changes to the clinical study protocol and informed consent form ................... 103
10.6
Audits and inspections ..................................................................................... 103
11.
LIST OF REFERENCES ................................................................................. 104
LIST OF TABLES
Table 1
Randomisation Ratio by Region............................................................42
Table 2
Study plan detailing the procedures.......................................................48
Table 3
Laboratory safety variables ...................................................................63
Table 4
Investigational product..........................................................................80
Table 5 
Medications allowed as concomitant medications..................................83
Table 6 
Medications prohibited as concomitant medicationsa.............................84
LIST OF FIGURES
Figure 1
Study flow chart....................................................................................34
LIST OF APPENDICES
Appendix A 
Estimated clinical comparability for low, medium, and high doses 
of inhaled corticosteroids .................................................................... 106
Appendix B 
Asthma Control Questionnaire-5......................................................... 107
Appendix C
Asthma Symptom Score...................................................................... 109
Appendix D
Actions Required in Cases of Increases in Liver Biochemistry and 
Evaluation of Hy’s Law ...................................................................... 110
Appendix E
Genomic Research .............................................................................. 115

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
22 (122)
Appendix F
International Airline Transportation Association (IATA) 6.2 
Guidance Document............................................................................ 118
Appendix G
Additional Safety Information............................................................. 119
Appendix H
Classification of In Vivo Inhibitors of CYP3A4 Enzymes................... 121
Appendix I
Signatures ........................................................................................... 122

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
23 (122)
LIST OF ABBREVIATIONS AND DEFINITION OF TERMS
The following abbreviations and special terms are used in this study Clinical Study Protocol.
Abbreviation or 
special term
Explanation
ACQ-5
Asthma Control Questionnaire
AE
Adverse Event
ALP
Alkaline phosphatase
ALT
Alanine aminotransferase
AM3
Asthma Monitor 3
ANCOVA
Analysis of covariance
AO
Airwave Oscillometry 
AST
Aspartate aminotransferase
ATS
American Thoracic Society
AUCτ
Area under the plasma concentration-curve within a dosing interval;
AUCτ/D
Dose normalised AUCτ
AUClast
Area under the plasma concentration-curve from time zero to the time of 
last quantifiable analyte concentration
AUEC(0-24)
Area under the plasma cortisol concentration-time curve from 0 to 
24 hours after dosing
AV
Atrial-ventricular
AZRand
AZ Randomisation
BDRM
Blind Data Review Meeting 
BID
Twice a Day
BLQ
Below lower limit of quantification
BMI
Body Mass Index
CFC
Chlorofluorocarbon (propellant)
CI
Confidence Interval
Cmax
maximum plasma concentration-time curve
CompEx
Composite endpoint for severe exacerbations of asthma
COPD
Chronic Obstructive Pulmonary Disease
CPKA
Covance Clinical Pharmacokinetic Alliance
CPMP
Committee for Proprietary Medicinal Products 
CRP
C-reactive protein

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
24 (122)
Abbreviation or 
special term
Explanation
CSR
Clinical Study Report
CSA
Clinical Study Agreement
Css,avg,
Average plasma concentration during a dosing interval at steady state, 
estimated as AUCτ/24
Css,max
Observed maximum concentration at steady state, taken directly from the 
individual concentration-time curve
Css,max/D
Dose normalised Css,max
Css,min
Observed minimum concentration at the end of the dosing interval
DAE
Discontinuation of IP due to adverse event
DES
Data Entry Site
DILI
Drug-Induced Liver Injury
DMP
Data Management Plan
DNA
Deoxyribonucleic acid 
DPI
Dry Powder Inhaler
DVS
Data Validation Specification 
ECG
Electrocardiogram
eCRF
Electronic Case Report Form
eDiary
Electronic Diary
EDC
Electronic Data Capture
EMA
European Medicines Agency
EOT
End of treatment
ERS
European Respiratory Society
ERT
e-Research Technology
ETV
Early termination visit
FAS
Full Analysis Set
FDA
Food and Drug Administration
FENO
Fractional Exhaled Nitric Oxide
FEV1
Forced Expiratory Volume in 1 Second
FF
Fluticasone Furoate
FOT
Forced Oscillation Technique 
FSH
Follicle-Stimulating Hormone
CCI
CCI

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
25 (122)
Abbreviation or 
special term
Explanation
FVC
Forced Vital Capacity
GCP
Good Clinical Practice
GINA
Global Initiative for Asthma 
GLIMMIX
Generalized Linear Mixed Effect Model
GMP
Good Manufacturing Practice
GR
Glucocorticoid Receptor
Gx
Genomics
H
Hour
HBsAg
Hepatitis B Surface Antigen
HCV
Hepatitis C Virus
HFA
Hydrofluoroalkane (propellant)
HIV
Human Immunodeficiency Virus
HL
Hy’s Law
HPA
Hypothalamic-pituitary-adrenal
HR
Heart Rate
HRT
Hormone Replacement Therapy
IATA
International Airline Transportation Association
IB
Investigator’s Brochure
ICF
Informed Consent Form
ICH
International Council for Harmonisation
ICS
Inhaled Corticosteroid
IEC
Independent Ethics Committee 
INR
International normalised ratio
International 
Co-ordinating 
Investigator
If a study is conducted in several countries the International Co-
ordinating Investigator is the Investigator co-ordinating the Investigators 
and/or activities internationally 
IP
Investigational Product 
IRB
Institutional Review Board
IUD
Intrauterine Device
IVRS
Interactive Voice Response System
IWRS
Interactive Web Response System
LABA
Long-Acting Beta Agonist

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
26 (122)
Abbreviation or 
special term
Explanation
LAMA
Long-acting Muscarinic Antagonist
LH
Luteinizing Hormone
LS
Least square
MCH
Mean corpuscular haemoglobin
MCV
Mean corpuscular volume
MDI
Metered-dose Inhaler
MedDRA
Medical Dictionary for Regulatory Activities 
MMRM
Mixed Model for Repeated Measures
NCA
Non-compartmental Analysis
PEF
Peak Expiratory Flow
PHL
Potential Hy’s Law
PI
Principal Investigator 
PK
Pharmacokinetics
PP
Per protocol
PRN
As Needed
QCP
Quantitative Clinical Pharmacology 
QD
Once Daily
QTc
QT interval corrected
QTcF
QT interval corrected using Fridericia’s formula
RoW
Rest of the World
RTSM
Randomization and Trial Supply Management
SABA
Short-Acting Beta Agonist
SAE
Serious Adverse Event 
SAMA
Short-acting muscarinic antagonist
SAP
Statistical Analysis Plan
SD
Standard deviation
SDTM
Study Data Tabulation Model
SDV
Source Data Verification
SE
Standard Error
SGRM
Selective GR modulator
SOP
Standard Operating Procedure
TBL
Total bilirubin

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
27 (122)
Abbreviation or 
special term
Explanation
TEAE
Treatment-emergent adverse event
TC
Telephone call
TSH
Thyroid stimulating hormone
tss,max
Time to maximum concentration at steady state, taken directly from the 
individual concentration-time curve
T4
Thyroxine
ULN
Upper limit of normal
US
United States
WHO
World Health Organisation
WOCBP
Women Of Child-Bearing Potential

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
28 (122)
1.
INTRODUCTION
1.1
Background and rationale for conducting this study
AZD7594 is a non-steroidal, potent and selective modulator of the glucocorticoid receptor 
(GR) under development for once daily (QD) inhaled treatment of chronic obstructive 
pulmonary disease (COPD) and asthma.
Inhaled corticosteroids (ICSs) are the cornerstone of therapy for asthma patients of all severity 
levels. The Global Initiative for Asthma (GINA) 2018 guidelines (GINA, 2018), as well as the 
European Medicines Agency (EMA) guideline on the clinical investigation of medicinal 
products for the treatment of asthma (CHMP/EWP/2922/01 Rev.1, 2015) recommend ICS as 
first-line treatment for all asthmatic patients requiring regular anti-inflammatory therapy. ICS 
have been shown to improve symptom control, lung function and quality of life; reduce 
exacerbations, asthma-related hospitalisations and death. However, ICS have known 
side-effects with long-term use. Therefore, a GR agonist with a better therapeutic index 
(balance between desired and undesired effects) than currently available ICSs could improve 
the available treatment options for asthma patients.
The GR is a well-known target and there is extensive clinical experience with GR agonists 
used as ICSs. Besides common local adverse reactions such as hoarseness and oral 
candidiasis, which are inconvenient for the patient but not of a serious nature, GR agonists 
have the potential to cause systemic side-effects such as effects on the hypothalamic-pituitary-
adrenal (HPA) axis and effects on bone mineral density and (in children) growth velocity.
These systemic effects are rare, and generally related to long-term treatment with high doses
(Christensson, 2008).
AZD7594 is a non-steroidal GR modulator and may have several potential benefits over 
conventional ICS. Non-clinical pharmacology studies in the Sephadex rat model, known to 
provide reasonable estimates of the relative potency of GR agonists in humans, indicate that 
the therapeutic index may be improved for AZD7594 compared with currently marketed 
inhaled steroidal GR agonists such as fluticasone propionate. The high selectivity of 
AZD7594 for the GR over other steroid nuclear hormone receptors and the high degree of 
plasma protein binding (>99%) could also theoretically be beneficial.
AZD7594 has a predicted 24-hour duration of its effect that could improve convenience, and,
potentially adherence to prescribed treatment, an acknowledged challenge in current COPD 
and asthma management.
The aim is to develop AZD7594 as a once daily inhaled non-steroidal selective GR modulator
(SGRM), which may ultimately lead to better disease control of both COPD and asthma 
through improved efficacy and compliance. The overall rationale for developing a once daily 
AZD7594 in a dry powder inhaler (DPI) is to provide a safe and effective future treatment 
option for both asthma and COPD patients.

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
29 (122)
1.2
Rationale for study design, doses and control groups
The objective of the study is to assess the efficacy and safety of multiple dose levels of 
AZD7594 as compared to placebo after a 12-week treatment period in patients with asthma 
symptomatic on low dose ICS. The comparison between placebo and an active comparator 
(fluticasone furoate [FF]) will be used for bench marking. AZD7594 (steady state) 
pharmacokinetics (PK) of the multiple dose levels of AZD7594 will be assessed in a subset of 
patients. In addition, 24-hour plasma cortisol sampling will be carried out to assess cortisol 
suppression as a measure of HPA axis suppression, a well-known class-effect of inhaled ICS
(Dahl, 2006; Wlodarczyk et al, 2008). The target population includes male and female 
patients, aged 18 to 85 years with body mass index (BMI) ≤35, with a clinical diagnosis of 
asthma as per the criteria of the GINA 2018 and EMA guidelines (GINA, 2018) 
(CHMP/EWP/2922/01 Rev.1, 2015) who are symptomatic on low dose ICS and demonstrate 
bronchodilator reversibility (increase of trough forced expiratory volume in 1 second [FEV1]
≥12% and ≥200 mL after administration of a short-acting bronchodilator).
A placebo-controlled, double-blinded design has been chosen to limit the occurrence of 
conscious and unconscious bias in the conduct and interpretation of the clinical study arising 
from the influence that the knowledge of treatment may have on the recruitment and 
allocation of patients. It is considered the optimal approach according to International Council 
for Harmonisation (ICH) E9 “Statistical principles in clinical studies”. The active comparator 
(FF) will be open-label. An overall 1:1:1:1:1:1:1 randomisation ratio has been selected to 
avoid any possible bias.
Matching placebo will be used as a negative control and FF will be used as a positive control 
for assessing AZD7594 characteristics. An open-label active comparator has been chosen over 
a double-dummy design because of the difficulties to produce a placebo of the active 
comparator. The DPI device containing AZD7594 or placebo will have the same external 
appearance to ensure the double-blinded nature of the study. Neither the active compound nor 
the placebo has perceptible taste, appearance, odour or colour that could unmask their identity.
By randomly assigning treatments, differences in baseline characteristics of the treatment 
groups will be minimised. FF was chosen as an active comparator at the recommendation of
the Food and Drug Administration (FDA) because of the once daily dosing, and the need to 
demonstrate efficacy.
The inclusion of a placebo arm is considered the most reliable method to minimise patient and 
Investigator bias according to ICH E10 “Choice of control group in clinical trials”, 
ICH/364/96 guideline adopted by the Committee for Proprietary Medicinal Products (CPMP), 
CPMP/EWP/562/98 and the FDA. The use of placebo is also recommended by the EMA 
regulatory guidance in the design of dose-finding studies for moderate-severe asthma.
The proposed dose levels of AZD7594 in this study range from 50 µg to 720 µg QD
(delivered dose). Doses have been selected based on the safety, tolerability, PK, and 
pharmacodynamics information generated in previous AZD7594 clinical studies. Three 
AZD7594 dose levels (58 µg, 250 µg and 800 µg [delivered doses]) have been tested in a 
2 week incomplete block crossover study in asthmatic patients. There was a clear dose 

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
30 (122)
ordering of the response as measured by primary endpoint of trough FEV1 on Day 15, with the 
highest effect observed in the 800 µg dose group. All dose levels were found to be safe and 
well tolerated. The cortisol suppression at the highest dose (720 µg) is predicted to be <10%. 
The proposed dose levels should adequately cover the therapeutic dose range.
For further details, refer to the Investigator’s Brochure (IB).
1.3
Benefit/risk and ethical assessment
Patients participating in the early clinical studies of AZD7594 will obtain no individual 
benefit from their participation in the studies. The aim of the early studies is to enable further 
investigations in patients to evaluate and develop AZD7594 as a once daily selective inhaled 
GR modulator for treatment for COPD and asthma, with an acceptable side-effect profile 
compared to inhaled GR agonists already on the market.
Data have been gathered from previous clinical experience with GR agonists, non-clinical 
safety pharmacology and toxicology studies and clinical studies with AZD7594. The GR is a 
well-known target and there is extensive clinical experience with GR agonists use as ICSs.
The side-effect profile of inhaled GR agonists is well-known and consists of local effects 
including oropharyngeal candidiasis, dysphonia and cough, as well as systemic effects such as 
skin thinning and bruising, endocrine/metabolic effects (including HPA suppression), 
osteoporosis and (in children) reduced growth velocity (Dahl, 2006). Pneumonia has also been 
noted with ICS use, especially in patients with severe COPD (GOLD, 2017). Although 
AZD7594 is not a steroid, given the shared target, the side-effect profile is potentially similar. 
In preclinical studies, AZD7594 displayed features typical of a potent GR agonist. Findings in 
humans can be monitored and are expected to be reversible. In the clinical studies conducted 
to date, AZD7594 was generally safe and well tolerated, though HPA suppression was seen at 
inhaled delivered doses higher than 1248 µg. Overall, the data generated suggest no findings 
of concern that would preclude proposed clinical studies with inhaled administration of 
AZD7594. Intravenous and oral dosing of AZD7594 (single doses) are also supported by the 
available data.
The development of any AE, abnormality in laboratory variables or any other safety variables 
will be closely monitored and evaluated on an ongoing basis during the clinical studies. Data 
from patients and healthy volunteers involved in the current and future AZD7594 clinical 
studies will be monitored for electrocardiogram (ECG), spirometry (only in patients with 
asthma or COPD), clinical chemistry, vital signs, adverse events (AEs) and PK. To further 
investigate the effect of AZD7594 on cortisol suppression, 24-hour plasma cortisol levels will 
be measured in a subset of patients in the current, as well as future clinical studies. Systemic 
absorption can occur directly through the lung surface or by swallowing the drug. In 
accordance with standard practice, patients will be instructed to wash their mouth after drug 
inhalation to reduce local and systemic side effects. 
This study will include a placebo arm. The use of the placebo arm may increase the risk of 
asthma exacerbation among enrolled patients randomised to this treatment. However, the 
inclusion of a placebo arm is in accordance with EMA (CHMP/EWP/2922/01 Rev.1, 2015), 

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
31 (122)
which recommends randomised, double-blind, placebo-controlled trials for dose-finding 
studies. This approach has previously been used safely in moderate-to-severe asthma 
populations to study the efficacy of FF (Bleeker et al, 2012 and Busse et al, 2012).
Patients enrolled in the trial will be requested to take protocol-defined asthma medications 
only. All patients will be provided with a short-acting beta2 agonist (SABA) 
(salbutamol/albuterol) to be used as rescue medication throughout the run-in and treatment 
periods. Although some patient may have an increased risk of deterioration based on a 
decrease in their total inhaled steroid dose, this risk will be minimised by frequent study visits, 
symptom reporting, and contact with medical personnel. The Investigators will carefully 
monitor the patients throughout the study, and evidence of asthma progression (through study 
visits and eDiary recordings of lung function, symptom score, and rescue inhaler use), will 
trigger an alert to the local clinician as well as the medical monitor. Patients whose asthma is 
not controlled on low dose ICS during the Run-in Period will be discontinued from the study, 
and patients are free to withdraw from participation in the study at any time. Upon completion 
of the study, patients are not restricted in the choice of medical therapies.
For further details, refer to the IB.
1.4
Study design 
This is a randomised, placebo-controlled, double-blind study with an open-label active 
comparator ICS (FF) arm to assess the efficacy and safety of AZD7594 administered QD by 
inhalation at multiple dose levels over a 12-week treatment period to patients with asthma
symptomatic on low dose ICS.
The study will be conducted in approximately 100 centres in 8 countries in Europe, United 
States (US), South Africa, and Japan. It is planned that approximately 714 patients will be 
randomised into the study, 102 patients per arm. The total duration of the study will be 
between 113 to 135 days for each individual patient and is planned to run approximately
12 months (it should not exceed 18 months).
The primary objective of the study is to determine the efficacy of AZD7594 as assessed by 
change in trough forced expiratory volume in 1 second (FEV1) at Week 12, when compared to 
placebo, with the aim of selecting doses to advance to Phase 3 studies.
All patients will sign an informed consent form (ICF) prior to participating in any 
study-specific procedures. 
The study will consist of a Run-in Period (Visits 1 to 3), a Treatment Period (Visits 4 to 7) and 
a Follow-up Contact (Visit 8) (Figure 1). All patients will be provided budesonide for the 
run-in period, a SABA (salbutamol/albuterol) as rescue medication for use throughout the 
run-in and treatment periods and will be randomly assigned to AZD7594, FF, or placebo 
during the treatment period. Patients will record daily symptoms, peak flow, and rescue 
medication use in eDiaries.

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
32 (122)
Run-in Period: This period will typically last 21 to 28 days (up to a maximum of 35 days, if 
Visit 3 is repeated) and consist of 3 visits: a Screening Visit (Visit 1), a Reversibility Visit 
within 7 days of Visit 1 (Visit 2) and, if reversibility criteria are met (increase of FEV1 ≥12% 
and ≥200 mL after administration of a short-acting bronchodilator), a Randomisation Visit 
within 21 to 28 days of Visit 1 (Visit 3).
Patients found to be eligible at Visit 1 will discontinue all asthma medications and switch to 
low dose budesonide (200 µg twice a day [BID] in Europe and 180 µg BID in US) and rescue 
medication will be taken as needed. Visit 1 (Screening Visit) and Visit 2 can occur the same 
day, unless the patient is taking medication that precludes reversibility testing, including 
long-acting beta agonist (LABA), fixed dose combination ICS/LABA treatment or long-acting 
muscarinic antagonist (LAMA), in which case the patient will return for Visit 2 between 2 to 
7 days after Visit 1, to allow sufficient time to wash-out their asthma medications.
All patients should refrain from taking SABA 6 hours prior to reversibility testing. If a patient 
does not meet reversibility criteria, Visit 2 can be repeated once within 1 week. If 
reversibility criteria are not achieved at the repeat attempt, the patient will be discontinued 
from the study.
Randomisation Visit (Visit 3): Patients who remain symptomatic while on low dose 
budesonide (as assessed by asthma mean symptom score >1 over the previous 7 days or use of 
a SABA on ≥3 days of the previous 7 days) and meet FEV1 criteria (≥40% to ≤90% predicted
at either −45 or −15 minutes pre-dose) will be randomised to one of 7 possible treatment arms
(see below). If patients do not meet eligibility (especially symptom criteria or lung function 
criteria), Visit 3 can be repeated once within 1 week. If this occurs, additional budesonide may 
need to be provided to the patient to ensure that the patient has run-in medication (budesonide) 
available throughout the run-in period.
If at any point during the study, patient’s asthma becomes uncontrolled (as per Asthma 
Control Questionnaire [ACQ-5] score of ≥3 or daily rescue (SABA) use of ≥12 puffs for 
≥3 consecutive days) they will be discontinued from the study. Patients who demonstrate
<80% eDiary compliance during Run-in Period, will not be randomised. Once a patient has 
failed screening, re-screening will not be allowed.
Treatment Period: This period will include 4 visits (Visit 4 to Visit 7) and will last 12 weeks.
At Visit 3, each patient will receive one of the following 7 possible treatments:

AZD7594 DPI 55μg [nominal strength]/50 µg [delivered dose] (QD)

AZD7594 DPI 99 µg/90 µg QD

AZD7594 DPI 198 µg/180 µg QD

AZD7594 DPI 396 µg/360 µg QD 

AZD7594 DPI 792 µg/720 µg QD

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
33 (122)

Placebo for AZD7594 QD

FF 100 µg QD (open-label) 
Throughout the treatment period, patients will record their daily symptoms including peak 
flow and medication use in eDiaries. At each treatment visit, patients will have their eDiaries 
reviewed, will complete the ACQ-5, will have an ECG and spirometry. At Visit 7, patients 
will stop investigational product (IP) and change back to their regular asthma therapy. 
Follow-up Period: There will be a Follow-up telephone contact (Visit 8), 1 week after 
Visit 7.
The “end of study” is defined as the date when all patients randomised in the study perform 
the last contact (either Visit 7 or Visit 8). This date will be communicated to Regulatory 
Authorities and Independent Ethics Committees (IECs) in due time according to local 
regulations.
The study design is driven by the EMA guidance on length of treatment required 
(CHMP/EWP/2922/01 Rev.1, 2015); precedence for new chemical entity (FF); regulatory 
advice (both FDA & CHMP in 2015).

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
34 (122)
Figure 1
Study flow chart
FF, fluticasone furoate; QD, once a day.
Note: AZD7594 DPI [nominal strength]/[delivered dose]
.

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
35 (122)
2.
STUDY OBJECTIVES
2.1
Primary objective
Primary Objective:
Outcome Measure:
To investigate the clinical efficacy of 
AZD7594 at different dose levels in 
asthmatics symptomatic on low dose ICS
Primary efficacy endpoint:

Change from baseline in trough FEV1 at 
Week 12 
Secondary efficacy endpoints:

Change from baseline in trough FEV1 at 
Weeks 2, 4, 8, and average over the 
treatment period

Change from baseline in FENO at Weeks 2, 
4, 8, 12, and average over the treatment 
period (analysis to be done on natural 
log-scale and results back-transformed to 
linear scale)

Change from baseline in trough FVC at 
Week 12 and average over the treatment 
period

Change from baseline in ACQ-5 at Week 12 
and average over the treatment period

Change from baseline in average morning 
PEF over the treatment period

Change from baseline in average evening 
PEF over the treatment period

Change from baseline in average daily use of 
rescue medication over the treatment period

Change from baseline in percent night-time
awakening days over the treatment period

Change from baseline in average daily 
asthma symptom score over the treatment 
period

Change from baseline in percent asthma 
control days over the treatment period

Change from baseline in percent rescue-free 
days over the treatment period

Change from baseline in percent 
symptom-free days over the treatment period

Time to first CompEx event, time to 
recurrent CompEx event, and CompEx event 
rate
CompEx, Composite endpoint for severe exacerbations of asthma; FENO, fractional exhaled nitric oxide; FVC, 
forced vital capacity; PEF, Peak Expiratory Flow

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
36 (122)
2.2
Secondary objectives
Secondary Objectives:
Outcome Measure:
To describe the (steady state) 
pharmacokinetics (PK) of AZD7594 in a 
subset of asthmatics symptomatic on low 
dose ICS
AZD7594 plasma concentration and (steady state) 
PK parameters (Css,max, Css,min, tss,max, AUClast, 
AUCτ, Css, avg, Css,max /D, and AUCτ/D and 
%Fluctuation) will be derived
To describe the pharmacodynamics of 
AZD7594 by measuring cortisol suppression 
in a subset of asthmatics symptomatic on 
low dose ICS
Area under the plasma cortisol concentration-time 
curve from zero to 24 hours after dosing 
(AUEC(0-24)), compared to placebo
To evaluate the safety and tolerability of 
AZD7594 in relation to placebo in 
asthmatics symptomatic on low dose ICS
Adverse events (AEs)/Serious adverse events 
(SAEs)/Discontinuation of IP due to AE (DAEs)
Vital signs 
Clinical chemistry/haematology parameters 
Electrocardiogram (ECG)a
a
The following parameters will be recorded for each ECG: date and time, HR (beats/min), RR interval, PR 
interval, QRS interval, QT interval (ms), QT interval corrected using Fridericia’s formula (QTcF) (ms), and 
overall evaluation.
AUCτ, Area under the plasma concentration-curve within a dosing interval; AUCτ/D, Dose normalised AUCτ; 
AUClast, area under the plasma concentration-curve from time zero to the time of last quantifiable analyte 
concentration; Css,avg, Average plasma concentration during a dosing interval at steady state, estimated as 
AUCτ/24; Css,max, observed maximum concentration at steady state, taken directly from the individual 
concentration-time curve; Css,max/D, Dose normalised Css,max; Css,min, observed minimum concentration at the 
end of the dosing interval; tss,max, time to maximum concentration at steady state, taken directly from the 
individual concentration-time curve. 
2.3
Exploratory objectives
Exploratory Objectives:
Outcome Measure:
To obtain (optional) blood samples for future 
genomics (Gx) research aiming to 
identify/explore biomarkers or genetic 
variations that may affect the efficacy, 
pharmacodynamics, safety and tolerability 
profile related to AZD7594 treatment in 
asthmatics symptomatic on low dose ICS
DNA from whole blood
To evaluate the effect of AZD7594 on small 
airways obstruction in asthmatics 
symptomatic on low dose ICS
Change from baseline up to Week 12 in measures 
of airway resistance and reactance, including 
R5-R20, as evaluated by Forced Oscillation 
Technique (FOT)
 
CCI

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
37 (122)
FOT, forced oscillation technique; Gx, genomics; ICS, inhaled corticosteroid
3.
PATIENT SELECTION, ENROLMENT, RANDOMISATION,
RESTRICTIONS, DISCONTINUATION AND WITHDRAWAL 
Each patient should meet all of the inclusion criteria and none of the exclusion criteria for this 
study. Under no circumstances can there be exceptions to this rule.
3.1
Inclusion criteria
For inclusion in the study, patients should fulfil the following criteria:
1.
Provision of informed consent prior to any study-specific procedures
2.
Men and women 18 to 85 years of age, inclusive, with body mass index (BMI) ≤35
3.
Patients need to be non-smokers or ex-smokers (have quit e-cigarettes or other 
inhaled tobacco products ≥6 months before Visit 1) with a total smoking history of 
less than 10 pack-years (not applicable for e-cigarettes)
4.
Documented clinical diagnosis of asthma for ≥6 months before Visit 1
5.
Patients on stable medium to high dose ICS (equivalent of budesonide >400 μg/day) 
or low to medium dose ICS/LABA for at least 4 weeks prior to screening (Visit 1)
(Appendix A, GINA, 2018)
6.
Patients must demonstrate reversibility to inhaled bronchodilators at Visit 2 (a 
≥12% and ≥200 mL improvement in FEV1 after administration of a 4 puffs of 
salbutamol/albuterol)
7.
Pre-bronchodilator FEV1 at Visit 3 between 40% and 90% predicted at either −45 or 
−15 minutes pre-dose
8.
At Visit 3, patients need to be symptomatic on low dose ICS as evidenced by 
combined daily asthma mean symptom score of >1 over the previous 7 days or 
SABA use on ≥3 of the last 7 days during the Run-in Period
9.
Demonstrate the ability to use the study inhalation device properly
10.
Patient able to perform acceptable pulmonary function testing for FEV1 according to 
American Thoracic Society/European Respiratory Society (ATS/ERS) acceptability 
criteria
11.
Patient is willing and able to follow study procedures and restrictions. Women of 
child-bearing potential (WOCBP) should be stable on their chosen method of highly 
effective birth control for a minimum of 3 months prior to Visit 1, and willing to 

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
38 (122)
use that for the entire duration of the study (from the time they sign the informed
consent), and for 1 month after the last dose of IP
12.
For optional inclusion in the Gx component of the study, patients must provide
separate informed consent for the genomic sampling and analysis
3.2
Exclusion criteria
Patients should not enter the study if any of the following exclusion criteria are fulfilled:
1.
Known or suspected hypersensitivity to any of the IPs, including budesonide, or 
excipients, including lactose
2.
Systemic steroid use within the 6 weeks before Visit 1
3.
Concomitant chronic respiratory disease (including current sleep apnea)
4.
History or clinical suspicion of any clinically relevant or active disease or disorder 
which, in the opinion of the Investigator, may either put the patient at risk because 
of participation in the study, or influence the results or the patient’s ability to 
participate in the study, or any other safety concerns in the opinion of the 
Investigator
5.
Use of prohibited medications that cannot be stopped during the entire period of the 
study (starting Visit 1), see Table 5 and Table 6
6.
Patients with <80% eDiary compliance during Run-in Period at Visit 3
7.
ACQ-5 of ≥3 at Visit 1, Visit 2, or Visit 3
8.
Daily rescue use of SABA ≥12 puffs for ≥3 consecutive days at any time during 
Run-in Period, before randomisation
9.
Any clinically important abnormalities in rhythm, conduction or morphology of the 
digital ECG at rest and any abnormalities in the digital ECG (at Visit 1 or Visit 3) 
that, as considered by the Investigator, may interfere with the interpretation of QT
interval corrected (QTc) interval changes
10.
Prolonged QT interval corrected using Fridericia’s formula (QTcF) ≥450 msec 
based on ECG at Visit 1 or Visit 3; or family history of long QT syndrome
11.
PR (PQ) interval prolongation (>240 msec), intermittent second or third degree 
atrial-ventricular (AV) block or AV dissociation at Visit 1 or Visit 3
12.
Patients with implantable cardiac defibrillator and patients with sustained 
symptomatic ventricular and/or atrial tachyarrhythmia

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
39 (122)
13.
Patients with unstable angina pectoris or stable angina pectoris classified higher 
than Canadian Cardiovascular Society Class II, or a myocardial infarction or stroke 
within 6 months before Visit 1
14.
History of hospitalisation within 12 months before Visit 1 caused by heart failure or 
a diagnosis of heart failure higher than New York Heart Association Class II
15.
Patients who are positive for hepatitis B surface antigen (HBsAg), hepatitis C virus 
(HCV) antibody or human immunodeficiency virus (HIV) at Visit 1
16.
Donation of blood (≥ 450 mL) within 3 months or donation of plasma within 
14 days before Visit 1
17.
Suspected poor capability to follow instructions of the study, as judged by the 
Investigator
18.
Previous participation or prior screen failure in the current study, or participation in 
any other research study within 1 month prior to Visit 1
19.
Patient under treatment with biologicals such as monoclonal antibodies or chimeric 
biomolecules including omalizumab, mepolizumab, and reslizumab within 
6 months or 5 half-lives before Visit 1, whichever is longer
20.
Patient treated with any investigational drug within 30 days (or 5 half-lives, 
whichever is longer) prior to Visit 1
21.
Positive drug screening result that cannot be justified by patient’s medical history 
and its relevant treatment (over-the-counter product or a valid prescription), or 
history of or current alcohol or drug abuse (including marijuana and marijuana-
containing valid prescriptions), as judged by the Investigator
22.
Planned in-patient surgery, major dental procedure or hospitalisation during the 
study
23.
Pregnant woman or lactating woman
24.
Involvement in the planning and/or conduct of the study (applies to both 
AstraZeneca staff, contract research organisation staff and/or staff at the study 
centre)
25.
Suspicion of Gilbert’s syndrome
26.
Vulnerable persons (eg, persons kept in detention)
Procedures for withdrawal of incorrectly enrolled patients see Section 3.5.

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
40 (122)
3.3
Exclusion criteria for the pharmacogenomic part of the study
If a patient agrees to participate in the optional Gx investigation of the study, the following 
exclusion criteria will apply:

Previous allogeneic bone marrow transplant

Non-leukocyte depleted whole blood transfusion within 120 days of the date of the 
genomic sample collection
3.4
Patient enrolment and randomisation
Investigator(s) should keep a record, the patient Screening and Enrolment log, of all patients
who entered the study, including those who failed the screening.
At Visit 3, approximately 714 patients will be randomly assigned to one of the 7 possible 
treatments using an overall balanced 1:1:1:1:1:1:1 randomisation ratio. Thus, approximately 
102 patients will be assigned to each treatment arm. There will be a stratification factor for 
US, Japan, and Rest of the World (RoW), with different allocation ratios.
The Randomization and Trial Supply Management (RTSM) specification will have
stratification by region (US versus Japan versus RoW) and PK sub study participation (Yes 
versus No) in RoW countries excluding South Africa. PK sub study will only take place in 
RoW countries excluding South Africa and is not permitted in US and Japan.
Prior to initiating the study, a computer-generated randomisation schedule will be prepared to 
assign a treatment to a randomisation number by PAREXEL through AZRand according to 
the relevant Standard Operating Procedure (SOP). The randomisation schedule will describe 
the link between the randomly assigned treatments to each randomisation number. The block 
size will be determined in agreement with the Clinical Study Manager and the Statistician, and 
will not be communicated to the Investigators. Further details will be included in the user 
requirement specification document.
The Investigator(s) will:
1.
Obtain signed informed consent from the patient before any study-specific 
procedures are performed
2.
Call/access the Interactive Voice Response System (IVRS)/Interactive Web 
Response System (IWRS) to assign potential patients a unique identification 
number. This number will be composed of 2 parts: the first part will have 4 digits 
(fixed) representing the site identifier. The second part will have 3 digits 
(ascending) which will be assigned sequentially within each site, starting with 001
3.
Determine patient eligibility at Visits 1 to 3. See Sections 3.1, 3.2, and 3.3

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
41 (122)
4.
For patients fulfilling the eligibility criteria at Visit 3, the Investigator will 
call/access IVRS/IWRS to assign a unique randomisation number and medication 
kit number
If a patient withdraws from participation in the study, then his/her enrolment/randomisation 
code cannot be reused.
Randomisation data will be kept strictly confidential, accessible only to authorised persons, 
until the time of unblinding of the allocated treatment of all study patients after locking the 
database upon termination of the study. When the study is completed and the data verified and 
locked and the populations defined, the randomisation list will be made available for data 
analysis.
Randomisation codes will be assigned in strict sequential order, as eligible patients are 
identified for randomisation.
3.5
Procedures for handling incorrectly enrolled or randomised 
patients
Patients who fail to meet eligibility criteria should not, under any circumstances, be enrolled
or receive study medication. There can be no exceptions to this rule. Patients who are 
enrolled, but subsequently found not to meet all the eligibility criteria, must not be randomised 
or initiated on treatment, and must be withdrawn from the study.
Where a patient does not meet all eligibility criteria but is randomised in error, or incorrectly 
started on treatment, the Investigator should inform the PAREXEL Medical Monitor
immediately, and a discussion should occur between the PAREXEL Medical Monitor and the 
Investigator regarding whether to continue or discontinue the patient from treatment. The 
AstraZeneca Study Physician will also be informed and PAREXEL must ensure all decisions 
are appropriately documented.
3.6
Methods for assigning treatment groups
PAREXEL will be responsible for generating the randomisation scheme through AZRand.
The choice of treatment group is balanced. The approximate randomisation ratio is shown in 
Table 1. Patients will be allocated to the 7 treatment groups in an overall 1:1:1:1:1:1:1 ratio.
For sites in the US, no patients will be randomised to the AZD7594 DPI 792 µg/720 µg QD 
group.

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
42 (122)
Table 1
Randomisation Ratio by Region
Region
Randomisation Ratio
AZD7594 DPI 55μg/50 µg QD
AZD7594 DPI 99 µg/90 µg QD
AZD7594 DPI 198 µg/180 µg QD
AZD7594 DPI 396 µg/360 µg QD
AZD7594 DPI 792 µg/720 µg QD*
Placebo for AZD7594 QD
FF 100 µg QD (open-label)
US
1:1:1:1:0:1:1
Non-US
2:2:2:2:3:2:2
Total
1:1:1:1:1:1:1
FF, Fluticasone Furoate; QD, once daily; US, United States; * US excluded.
Randomisation will be performed using the centralised IVRS/IWRS at Visit 3 (Day 1).
Specific information concerning the use of the IVRS/IWRS will be provided in a separate 
manual. Randomised patients who discontinue from treatment will not be replaced. At 
randomisation, the IVRS/IWRS will inform the site about the medication kit numbers to be 
administered and dispensed to each particular patient.
The randomisation list will only be provided to the following personnel:

AstraZeneca personnel responsible for study medication preparation

Covance Bioanalytical group responsible for PK analyses
3.7
Methods for ensuring blinding
All double-blind medication kits will have similar appearance regardless of the IP (AZD7594 
or placebo) contained in a DPI device and will be labelled using a unique medication 
identification number (Kit ID) that is linked to a treatment arm. IVRS/IWRS will assign the 
study medication to be dispensed to each patient at Visit 3.
Supplies of budesonide, FF and SABA (salbutamol/albuterol) will be open-label.
3.8
Methods for unblinding 
Individual treatment codes, indicating the treatment randomisation for each randomised 
patient, will be available to the Investigator(s) or pharmacists from the IVRS/IWRS. Only 
authorised personnel at the research site will receive unblinding permits in IVRS/IWRS.
Patients will be immediately withdrawn from the study once treatment has been unblinded.

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
43 (122)
Routines for this will be described in the IVRS/IWRS user manual that will be provided to 
each centre.
The treatment code should not be broken except in medical emergencies when the appropriate 
management of the patient requires knowledge of the treatment randomisation. The 
Investigator will document and report the action to AstraZeneca/PAREXEL, without revealing 
the treatment given to the patient to the AstraZeneca/PAREXEL staff.
Personnel responsible for analysing PK samples will be unblinded as to the exact content of 
investigational treatments (ie, the randomisation code). AstraZeneca retains the right to break 
the code for serious adverse events (SAEs) that are unexpected and are suspected to be 
causally related to an IP and that potentially require expedited reporting to Regulatory 
Authorities. Treatment codes will not be broken for the planned analyses of data until all 
decisions on the evaluability of the data from each individual patient have been made and 
documented.
3.9
Restrictions
Patients enrolled in the study should adhere to the following restrictions for the duration of the 
study. Any event likely to interfere with the objectives of the study will be communicated to 
the Investigator and reported without delay to AstraZeneca.

Patient should keep regular night/day shifts

Blood donation is not allowed throughout the study

The following activities should preferably be avoided prior to lung function testing:

Consuming alcohol within 4 hours before testing

Consuming caffeine within 6 hours before testing

Performing vigorous exercise within 30 minutes before testing

Wearing clothing that substantially restricts full chest and abdominal expansion

Eating a large meal within 2 hours before testing

Patients should avoid taking inhaled bronchodilators prior to spirometry (see 
Section 7.7). A SABA should be withheld for at least 6 hours before each visit up to the 
last procedure on that visit. If the patient has taken a SABA within 6 hours prior to the 
visit, the visit should be rescheduled within 1 to 2 days as possible. However, patients 
are permitted to use a SABA if its use is absolutely necessary during the visit, and with 
the approval of the Investigator.

Restrictions on medications (prescribed or over-the-counter products) are defined in 
Section 7.7.

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
44 (122)

WOCBP will require a highly effective method of birth control during the study. 
WOCBP should be stable on their chosen method of highly effective birth control for a 
minimum of 3 months prior to Visit 1, and willing to use this for the entire duration of 
the study (from the time they sign the informed consent), and for 1 month after the last 
dose of IP. With the exception of abstinence, it is recommended that male partners of 
enrolled women additionally use a condom during the duration of the study. Highly 
effective methods of birth control are defined as those which result in a low failure rate 
(ie, less than 1% per year) when used consistently and correctly. These include:

Female sterilisation (ie, documented bilateral tubal ligation)

Hormonal methods of contraception associated with inhibition of ovulation 
(including levonorgestrel intrauterine system [eg, Mirena™], 
medroxyprogesterone injections [eg, Depo Provera™], etonogestrel implants [eg, 
Implanon™, Norplan™], normal and low dose combined oral pills, 
norelgestromin/ethinylestradiol transdermal system, intravaginal device [eg, 
ethinylestradiol and etonogestrel], and desogestrel [eg, Cerazette™])

An intrauterine device (IUD) (provided coils are copper-banded)

True abstinence (when this is in line with the preferred and usual lifestyle of the 
patient) and male sterilisation (if only one sexual partner, with the appropriate 
post-vasectomy documentation of the absence of sperm in the ejaculate). Periodic 
abstinence (eg, calendar, ovulation, symptothermal, post-ovulation methods) and 
withdrawal are not acceptable methods of contraception. 

Women will be considered postmenopausal if the following age-specific requirements 
apply:

Women under 50 years of age would be considered postmenopausal if they have 
been amenorrheic for 12 months or more following cessation of exogenous hormonal 
treatments AND with luteinizing hormone (LH) and follicle-stimulating hormone 
(FSH) levels in the postmenopausal range.

Women over 50 years of age would be considered postmenopausal if they have been 
amenorrheic for 12 months or more following cessation of all exogenous hormonal 
treatments.
Women who are considered to be postmenopausal without documentation of 12-month 
amenorrhea and receiving hormone replacement therapy (HRT), will have to use one of 
the non-hormonal highly-effective contraception methods in addition to HRT, or 
discontinue HRT and to use hormonal highly-effective method for at least 3 months
prior to Visit 1.

Male patients will be advised in the informed consent of the potential risk to 
embryofoetal development observed in non-clinical studies. Male patients must be 

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
45 (122)
willing to use a condom during the study and for 90 days after the study, unless their 
partner is over 50 years of age and have been amenorrheic for 12 months or more 
following cessation of all exogenous hormonal treatments or are surgically sterile. Male 
patients must refrain from donating sperm from the first day of dosing until 90 days after 
the last dose of IP.
3.10
Discontinuation of investigational product
Patients may be discontinued from the investigational product (IP) in the following situations:

Patient withdrawal: The patient is free to discontinue treatment at any time, without 
prejudice to further treatment. A patient who decides to discontinue the IP will always 
be asked about the reason(s) and the presence of any AEs. If possible, they will be seen 
and assessed by an Investigator(s). AEs will be followed up (See Section 6.3) and all 
study drugs should be returned by the patient.

AE (including asthma exacerbations): If a patient experiences an AE, their premature 
discontinuation will be considered at the discretion of either the Investigator or the 
patient regardless of the causal relationship to the IP. AE should be indicated as the 
reason for discontinuation.

Development of protocol-specific criteria; In these cases, patients must be discontinued 
from the IP:

Patient with any asthma-specific withdrawal criteria described below:
(a) ≥12 puffs of rescue medication for ≥3 consecutive days
(b) Decrease from baseline in morning peak expiratory flow (PEF) by ≥30% for 
≥3 consecutive days (baseline defined as mean peak flow over the last week of 
Run-in Period)
(c) Decrease from baseline in evening PEF by ≥30% for ≥3 consecutive days 
(baseline defined as mean peak flow over the last week of Run-in Period)
(d) ACQ-5 ≥3.0 at any time during the study
(e) Clinical asthma exacerbation requiring increased dose of ICS or systemic 
steroids or hospitalisation for asthma exacerbation

Patient with prolonged QTcF >450 ms or an increase from baseline (Visit 3 
pre-dose) of >60 ms, confirmed (persistent for at least 5 min)
Note: If any of these conditions have been reported as AE, then this AE should be 
the primary reason for discontinuation reported into the electronic Case Report 
Form (eCRF).

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
46 (122)

Protocol deviation: After randomisation, any protocol deviations detected should be 
corrected when possible and the patient should be allowed to continue. The following 
will lead to discontinuation of treatment: protocol deviations that could affect patient’s 
safety (eg, illness requiring treatment(s) which in the clinical judgement of the 
Investigator [or after discussion with the study medical monitor] might invalidate the 
study by interfering with the IP); deviations due to patient non-compliance with the 
study protocol.

Failure to meet randomisation criteria: Violations of inclusion and/or exclusion criteria 
detected after randomisation. See Section 3.5 for patients not fulfilling 
inclusion/exclusion criteria but detected after randomisation.

Lost to follow-up/Non-attendance: In these cases, every effort should be made by the 
Investigator to ascertain the reason and to assure the patient’s attendance as soon as 
possible. Every effort (at least 3 documented attempts) should be made to contact the 
patient and will be documented in the medical records. If the patient cannot be reached 
after that, a registered mail letter will be sent to the patient and will be documented in 
the medical records.

Pregnancy: In case of pregnancy, the patient will be immediately discontinued from the 
study (see Section 6.6.1).

Patient withdrawal due to death.

Other: Study cancellation or any other reason not described above.
Generally before discontinuation of a patient from the study, a discussion between the 
PAREXEL Medical Monitor and the Investigator is encouraged, as much as feasible.
3.10.1
Procedures for discontinuation of a patient from investigational product 
At any time, patients are free to discontinue the IP or withdraw from the study (ie, IP and 
assessments – see Section 3.12), without prejudice to further treatment. A patient that decides 
to discontinue IP will always be asked about the reason(s) and the presence of any AEs. If 
possible, they will be seen and assessed by an Investigator(s) in an Early Termination Visit.
AEs will be followed up (See Section 6.3.2); eDiary and study drugs should be returned by the 
patient.
3.11
Criteria for withdrawal 
3.11.1
Screen failures 
Screening failures are patients who do not fulfil the eligibility criteria for the study, and 
therefore must not be randomised. For these patients, the reason for study withdrawal should 
be recorded as ‘Screen failure’ (ie, the patient does not meet the required inclusion/exclusion
criteria). This reason for study withdrawal is only valid for screen failures (not randomised 
patients).

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
47 (122)
3.11.2
Withdrawal of the informed consent
Patients are free to withdraw from the study at any time (IP administration and study
assessments), without prejudice to further treatment.
If a patient withdraws consent to the use of donated biological samples, the patient is 
withdrawn from further study participation, as collection of the biological samples is an 
integral part of the study. This does not apply for withdrawal of consent for Gx sample.
A patient who withdraws consent will always be asked about the reason(s) and the presence of 
any AE. The Investigator will follow-up AEs outside of the clinical study. The patient will 
return the eDiary as well as the IP.
If a patient withdraws from participation in the study, then his/her enrolment/randomisation 
code cannot be reused. Withdrawn patients will not be replaced.
Regardless of the reason for termination, all data available for the patient at the time of 
discontinuation of follow-up must be recorded in the eCRF. All reasons for withdrawal of 
consent must be documented.
3.12
Discontinuation of the study
The study may be stopped if, in the judgement of AstraZeneca, trial patients are placed at 
undue risk because of clinically significant findings that:

Meet individual stopping criteria or are otherwise considered significant 

Are assessed as causally related to study drug,

Are not considered to be consistent with continuation of the study
Regardless of the reason for termination, all data available for the patient at the time of 
discontinuation of follow-up must be recorded in the eCRF. All reasons for discontinuation of 
treatment must be documented.
In terminating the study, the Sponsor will ensure that adequate consideration is given to the 
protection of the patients’ interests.
4.
STUDY PLAN AND TIMING OF PROCEDURES 
The Study Plan detailing the procedures during in the Run-in Period, the Treatment Period and 
during Follow-up Contact is presented in Table 2.

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
48 (122)
Table 2
Study plan detailing the procedures
RUN-IN
TREATMENT
F/UP
Visit 1a
(Screening)
Visit 2a
(Reversibility)
Visit 3a
(Randomisation)
Visit 4
(Wk 2)
Visit 5
(Wk 4)
Visit 6
(Wk 8)
Visit 7 
(Wk 12)
(EOT)
ETV
Visit 8 
(TC)
Day
Within
21-28 days 
before Visit 3
Within 0-7 days
after Visit 1
Day 1
Day 15 
±2 days
Day 29 
±1b
days
Day 57 
±1b days
Day 85 
±1b days
7-10 days 
after Visit 
7
Signed Informed Consent
X
Inclusion/Exclusion 
criteria
X
X
X
Demography
X
Medical/Surgical history
X
Smoking history
X
Asthma history
X
Concomitant medication 
and procedures
X
X
X
X
X
X
X
X
X
Height/Weight
X
Xc
Physical examination
Xd
Xe
Xd
Xd
Vital signs
X
X
X
X
X
X
X
X
Inhalation training
Xf
Xf
Run-in medication 
(budesonide)
X
Rescue medication 
(SABA)g
X
X
X
X
X
X
Blood sample for Gx 
(optional)
Xh

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
49 (122)
RUN-IN
TREATMENT
F/UP
Visit 1a
(Screening)
Visit 2a
(Reversibility)
Visit 3a
(Randomisation)
Visit 4
(Wk 2)
Visit 5
(Wk 4)
Visit 6
(Wk 8)
Visit 7 
(Wk 12)
(EOT)
ETV
Visit 8 
(TC)
Day
Within
21-28 days 
before Visit 3
Within 0-7 days
after Visit 1
Day 1
Day 15 
±2 days
Day 29 
±1b
days
Day 57 
±1b days
Day 85 
±1b days
7-10 days 
after Visit 
7
Safety laboratoryj
X
X
X
X
X
Digital ECGk
X
X
X
X
X
Forced Oscillation 
Techniquel
X
X
X
X
X
X
X
Reversibility testm
X
Spirometry (FEV1 and 
FVC)n
X
X
X
X
X
X
X
Peak flow meter 
dispensing and training
X
Peak expiratory flowo
FENO test
X
X
X
X
X
X
X
X
ACQ-5
X
X
X
X
X
X
X
X
Dispense eDiary and 
training
X
Check eDiary
X
X
X
X
X
X
X
Collect eDiary
X
X
Pregnancy test for 
femalesq
X
X
X
X
X
X
CCI
CCI
CCI
CCI
CCI
CCI
CCI
CCI
CCI

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
50 (122)
RUN-IN
TREATMENT
F/UP
Visit 1a
(Screening)
Visit 2a
(Reversibility)
Visit 3a
(Randomisation)
Visit 4
(Wk 2)
Visit 5
(Wk 4)
Visit 6
(Wk 8)
Visit 7 
(Wk 12)
(EOT)
ETV
Visit 8 
(TC)
Day
Within
21-28 days 
before Visit 3
Within 0-7 days
after Visit 1
Day 1
Day 15 
±2 days
Day 29 
±1b
days
Day 57 
±1b days
Day 85 
±1b days
7-10 days 
after Visit 
7
LH and FSH, only in 
women <50 years with 
amenorrhea for 12 months 
without an alternative 
medical cause
X
Urine drug screen
X
Serology (HBsAg, HCV, 
HIV)
X
PK samplingr
X
X
24-h plasma cortisol 
measurements
X*
X
IP dispensingt
X
X
X
Return unused study 
medication and inhaler
X
X
X
X
Return of budesonide 
used during Run-in
X
Adverse eventsu
X
X
X
X
X
X
X
X
X
*The patients having 24-hour cortisol sampling will present to clinic 24 hours prior to Day 1 to initiate cortisol sampling. Visit 3 baseline data will be 
collected before finishing cortisol collection within -2 and 0 h pre-dose.
a
Visit 1 (Screening Visit) and Visit 2 can occur the same day, unless the patient is taking a LABA, fixed dose combination ICS/LABA treatment or a 
LAMA, in which case the patient will return for Visit 2 within 2 to 7 days to allow sufficient time to wash-out their asthma medications. Visit 2 and
Visit 3 (Randomisation Visit) can be repeated once within 7 days. It is recommended that patients should have a minimum of 21 days and maximum 28 
days between Visit 1 and Visit 3. Visit 2 related procedures (e-diary check, ACQ-5 collection, FeNO) should not be performed if Visit 2 occurs on the 
same day as Visit 1.

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
51 (122)
b
The length between Visit 3 and Visit 5 must not exceed 30 days in order to accommodate the 30-day drug supply. From Visit 5 to Visit 7, length 
between two consecutive scheduled visits must not exceed 30 days.
c
Weight only.
d
A complete physical examination including an assessment of the general appearance, respiratory, cardiovascular, abdomen, skin, head and neck 
(including ears, eyes, nose, mouth, teeth, and throat), lymph nodes, thyroid, musculoskeletal and neurological systems will be performed.
e
A brief physical examination including an assessment of the general appearance, lung, cardiovascular system, lymphatic nodes, abdomen, 
musculoskeletal system, neurological system, skin, mouth, and throat will be performed.
f
Inhalation training for budesonide will happen at Visit 1 (Screening Visit) for all patients including those switching from ICS/LABA, LABA or LAMA 
medications. Inhalation training for the IP (AZD7594/placebo/FF) will happen at Visit 3 after randomisation (never before Visit 3).
g
Check if patient has enough rescue medication until the next visit (during run- in and the treatment periods) and refill if necessary, collect rescue 
medication at Visit 7.
h
A blood sample will be collected for Gx analysis before IP administration at Visit 3 only from randomised patients who have signed the informed 
consent form for the Gx sub-study.
i 
 
j
Safety laboratory assessments require patients to fast for 8 hours (see laboratory safety assessments table) and will be done at all visits marked; thyroid 
function only at baseline and at EOT (Visit 7).
k
During treatment period, digital ECG will be measured before IP administration (prior to spirometry) and 1 h (±10 minutes) after administration as 
indicated.
l
Forced Oscillation Technique will be performed in patients in the US and Europe only and must be conducted prior to spirometry.
m
Reversibility testing will be performed 15 to 30 minutes after inhalation of 4 puffs of salbutamol/albuterol (allowed time window: 15 to 45 minutes). If 
the reversibility criterion is not fulfilled, spirometry measurements can be repeated one time, within 30 to 60 minutes post-SABA administration. A 
repeat Visit 2 may be done within 1 week of the original visit.
n
Spirometry will be performed at all listed visits. On the days with IP dosing, it should be pre-dose spirometry. Visit 3 to Visit 7 must be started between 
6:00 AM and 12:00 AM at the latest and within ±2 hours relative to the baseline assessment. During the treatment visits (Visit 3 to Visit 6), 2 spirometry 
measurements 30 minutes apart from each other should be done at 45 minutes (allowed time window: 35 to 55 minutes) and 15 minutes before IP 
administration (allowed time window: 5 to 30 minutes) at each treatment visit.
o
Peak expiratory flow will be measured by the patient at home after completing the morning and evening diary using a peak flow meter.
p
 
q
To be performed in all women. At Visits 1 and 3, serum and urine pregnancy tests to be done; only a urine pregnancy test is to be done thereafter at 
visits marked in the table above.
r
PK blood samples will be collected in a subset of patients (AZD7594 or placebo) at Visits 5 and 7. At Visit 5 (Day 29) pre-dose blood sample will be 
taken immediately after spirometry. Visit 7 PK samples will be started 24 hours prior to Visit 7 assessments: (Day 84) (pre-dose and 0.25, 0.5, 1.0, 2.0, 
4.0, 8.0, 12.0, 16.0 and 24h post-dose). The exact time of sampling and dosing (the day before, and the dose in the clinic) should be noted in the eCRF.
s
Twenty-four hour plasma cortisol measurements will be performed in the same subset of patients as PK sampling and a selected subset of FF treated 
patients. Plasma cortisol will be measured just before and at the end of the Treatment Period. Measurement before the first dose will serve as a baseline 
value (patients will be required to stay overnight for 24 h before IP administration on Day 1 and for 24 h after the last dose on Day 84). Blood sampling 
CCI
CCI

Clinical Study Protocol
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
52 (122)
will occur on Day -1 (at -24, -22, -20, -18, -16, -14, -12, -8, -4, and -2 hours), on Day 1 (0 hour pre-dose) and on Day 84 (at 0 [pre-dose], 2, 4, 6, 8, 10, 
12, 16, 20, 22 and 24 hours relative to IP administration). Visit 7 assessments on Day 85.
t
IP will be administered once daily for 84 ± 2 days (Days 1 to 84). Patients will record their intake of IP daily in their eDiary.
u
AEs will be collected from the time of informed consent.
ACQ-5, Asthma Control Questionnaire-5; AE, adverse event; ECG, electrocardiogram; eCRF, electronic case report form, eDiary, electronic diary; 
 
; EOT, end of treatment; ETV, Early Termination Visit; FEV1, forced expiratory volume in 1 second; FENO, fractional 
exhaled nitric oxide; FSH, follicle-stimulating hormone; F/UP, follow-up; FVC, forced vital capacity; Gx, genomics; HBsAg, hepatitis B surface 
antigen; HCV, hepatitis C virus; HIV, human immunodeficiency virus; ICS, inhaled corticosteroids; IP, investigational product; LABA, long-acting 
beta2 agonists; LAMA, long-acting anti-muscarinic antagonists; LH, luteinizing hormone; PK, pharmacokinetics; SABA; short-acting beta agonist; TC, 
telephone call; US, United States; Wk, week.
CCI

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
53 (122)
4.1
Run-in Period
Procedures will be performed according to the Study Plan (Table 2).
This period will typically last 21-28 days (up to a maximum of 35 days, if Visit 3 is repeated) 
and will consist of 3 visits: a Screening Visit (Visit 1), a Reversibility Visit (Visit 2) and a 
Randomisation Visit (Visit 3). There should be a minimum of 21 days between Visit 1 and 
Visit 3 to allow wash-out of all prior medications and evaluation of symptoms on a stable dose 
of budesonide before Visit 3.
At screening, consenting patients will be assessed to ensure that they meet eligibility criteria.
Patients who do not meet these criteria must not be enrolled in the study. No study-specific 
procedures, including any wash-out, will be performed prior to signing the ICF.
The procedures to be performed at Visits 1 to 3 are as follows:
4.1.1
Visit 1 (Screening Visit) (within 21 to 28 days before Visit 3)

Obtain signed informed consent

Assess inclusion and exclusion criteria

Record demography (age, sex, race, ethnicity, country), medical/surgical history, 
smoking history (date of smoking initiation, date of smoking cessation, and total pack-
years), asthma history and concomitant medications and procedures

Record body weight (in light indoor clothes, without shoes) and height, perform 
complete physical examination and collect vital signs (prior to dosing budesonide)

Perform digital ECG (prior to FENO test)

Dispense eDiary to patient and provide training on eDiary

ACQ-5 to be completed by the patient

Carry out FENO test

Carry out FOT tests (FOT will be performed in patients in the US and Europe only)

Dispense peak flow meter and provide training on peak flow monitoring

Carry out serum and urine pregnancy tests (all women)

Carry out LH and FSH tests (only in women <50 years with amenorrhea for 12 months 
without an alternative medical cause)

Urine drug screen and serology (HBsAg, HCV, HIV)

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
54 (122)

Budesonide inhalation training

Dispense budesonide

Dispense rescue medication (salbutamol/albuterol)

Record AEs (AEs will be collected from the time of Informed Consent to Follow-up 
Contact)
4.1.2
Visit 2 (Reversibility Visit) (within 0 to7 days after Visit 1)
Visit 2 can occur the same day as Visit 1, unless the patient is taking a LABA, fixed dose 
combination ICS/LABA treatment or a LAMA, in which case the patient will return for 
Visit 2 within 2 to 7 days after Visit 1, to allow sufficient time to wash-out their asthma 
medications. Patients for whom Visit 1 and Visit 2 will be done at the same day, ECG and 
FOT are to be done prior to spirometry; and spirometry is to be done before budesonide.

Collect concomitant medications and procedures information

Collect vital signs (prior to dosing of SABA for reversibility test)

Dispense SABA rescue medication (salbutamol/albuterol), if applicable

ACQ-5 to be completed by patient

Check eDiary, evaluate ACQ-5

Record any AEs and any changes in concomitant medication since Visit 1

Confirm the patient has not taken SABA rescue medication (salbutamol/albuterol) 
within the 6 hours prior to reversibility testing

Carry out FENO testing

Carry out spirometry (FEV1 and forced vital capacity [FVC] and reversibility testing)
If a patient does not meet reversibility criteria, reversibility testing can be repeated once 
within 1 week. If reversibility criteria are not achieved at the repeat attempt, the patient will be 
discontinued from the study.
4.1.3
Visit 3 (Randomisation Visit) (Day 1, within 21 to 28 days after Visit 1)

In the subset of patients who will have cortisol sampling, 24-hour plasma cortisol 
sampling will be initiated 24 hours prior to Visit 3, (at −24, −22, −20, −18, −16, −14, 
−12, −8, -4, −2 and 0 hours before IP administration) (patients will need to attend the 
clinic before Visit 3 and stay for 24 hours before IP administration on Day 1). Note the 
exact time of sampling in the eCRF.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
55 (122)

Check inclusion/exclusion criteria (see Section 3)

Collect concomitant medications and procedures information

Collect budesonide from the patient

Collect vital signs (prior to dosing)

Perform a brief physical examination

Perform digital ECG (prior to spirometry) before and 1 hour after IP administration

ACQ-5 to be completed by patient

Check eDiary, evaluate ACQ-5

Record AEs since previous visit

FENO testing 

Carry out FOT tests prior to spirometry (FOT will be performed in patients in the US 
and Europe only) 

Carry out spirometry (FEV1 and FVC); 2 measurements 30 minutes apart, at −45 and 
−15 minutes before IP administration

Review inclusion/exclusion criteria for randomisation eligibility (daily asthma mean 
symptom score of >1 over the previous 7 days or SABA use on ≥3 of the last 7 days; 
pre-bronchodilator FEV1 between 40-90 percent predicted at either −45 or −15 minutes 
pre-dose) and ECG results

Dispense SABA rescue medication (salbutamol/albuterol), if applicable

Collect a blood sample for Gx (in those patients who have consented) 

Collect sample for exploratory biomarkers

Carry out safety laboratory assessments

Carry out serum and urine pregnancy tests (all women)

Only patients who meet all inclusion/exclusion criteria, remain symptomatic (as assessed by 
asthma mean symptom score >1 over the previous 7 days or use of a SABA on ≥3 days of the 
previous 7 days) and meet FEV1 criteria (≥40% to ≤90% predicted at either −45 or 
−15 minutes pre-dose) at this point will be allowed to continue. If patients do not meet 
CCI

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
56 (122)
criteria, Visit 3 can be repeated once within 1 week (up to a maximum of 35 days after Visit 
1). Otherwise the screening failure will be recorded in the IVRS/IWRS and Electronic Data 
Capture (EDC) system. Investigator should ensure that patient has run-in medication 
(budesonide) available throughout the run in period, and if the run in period lasts >30 days, 
budesonide may need to be given again to the patient when asking the patient to return 
for a repeat Visit 3.

Randomise the eligible patient via IWRS/IVRS, and obtain kit number assignment.
Document the randomisation date on the medical notes

Carry out inhalation training for IP (AZD7594/placebo/FF)

Dispense IP to the patient
4.2
Treatment period
Descriptions of the procedures for this period are included in the Study Plan (Table 2). The 
Treatment Period will extend for 12 weeks, and comprise of Visits 4 to 7. During this period, 
the patients will take the study treatment assigned at randomisation at home with the 
exception of doses on study visit days (Visits 4 to 6), which will be taken at the study centre.
4.2.1
Visits 4, 5 and 6 (Days 15, 29, and 57 ± 1 day)
The length between Visit 3 and Visit 5 must not exceed 30 days in order to accommodate the 
30-day drug supply. From Visit 5 to Visit 7, length between two consecutive scheduled visits 
must not exceed 30 days.

Collect any unused medication and inhalers from the patient (at Visit 5 and Visit 6 only)

Collect concomitant medications and procedures information

Collect vital signs (prior to dosing)

Dispense SABA rescue medication (salbutamol/albuterol), if applicable

Perform digital ECG (only at Visit 4) (pre-dose [prior to spirometry] and 1 hour after IP 
administration)

ACQ-5 to be completed by patient

Check eDiary

Record AEs since previous Visit

FENO testing 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
57 (122)

Carry out FOT tests prior to spirometry (FOT will be performed in patients in the US 
and Europe only)

Carry out spirometry (FEV1 and FVC); 2 measurements 30 minutes apart, at −45 and 
−15 minutes before IP administration and at least 23 hours after last dose

At Visit 5 (Day 29) only: Collect PK blood samples (pre-dose) immediately after 
spirometry in patients who consented to participate in the PK subset. Note the exact time 
of sampling and dosing (the day before, and the dose in the clinic) in the eCRF.

Carry out safety laboratory assessments (only at Visit 5)


Carry out urine pregnancy test (all women) at Visit 5 and Visit 6

Dispense IP to the patient (Visit 5 and Visit 6)
4.2.2
Visit 7 (Day 85± 1 day), End of treatment

The subset of patients who will have PK and/or cortisol sampling will present to the 
clinic for sample collection 24 hours prior to Visit 7

PK subset: Collect PK blood samples on Day 84 (pre-dose, and 0.25, 0.5, 1.0, 2.0, 4.0, 
8.0, 12.0, 16.0 and 24h post-dose) (patients need to stay at the clinic for 24 hours) in the 
subset of consented patients only. Note the exact time of dosing (the day before, and the 
dose in the clinic) and the exact time of sampling in the eCRF.

Cortisol subset: Twenty-four hour plasma cortisol measurements will be performed in 
the same subset of patients as PK sampling and a selected subset of FF treated patients. 
Blood sampling on Day 84 (pre-dose and 2, 4, 6, 8, 10, 12, 16, 20, 22 and 24 hours
post-dose) (patients need to stay for 24 hours). Note the exact time of sampling in the 
eCRF.

Collect any unused medication and inhalers from the patient 

Collect SABA rescue medication (salbutamol/albuterol)

Collect concomitant medications and procedures information

Record body weight (in light indoor clothes, without shoes)

Perform complete physical examination and collect vital signs

Perform digital ECG (prior to spirometry)

ACQ-5 to be completed by patient
CCI

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
58 (122)

Check and collect eDiary

Record AEs since previous Visit

FENO testing

Carry out FOT tests prior to spirometry (FOT will be performed in patients in the US 
and Europe only)

Carry out spirometry (FEV1 and FVC); 2 measurements 30 minutes apart, at least 
23 hours after last dose

Collect sample for exploratory biomarkers

Carry out safety laboratory assessments, including thyroid function

Carry out urine pregnancy test (all women)


Patients will resume their regular asthma treatment as per the investigator’s
recommendation
4.2.3
Early Termination Visit
If patient discontinues prematurely from the IP for any reason, the following procedures will 
be performed as soon as possible after last IP intake:

Collect any unused medication and inhalers from the patient

Record concomitant medication and procedures since previous visit

Perform complete physical examination and collect vital signs

Perform digital ECG (prior to spirometry)

ACQ-5 to be completed by patient. Collect and evaluate ACQ-5 from patients

Collect eDiary from the patients

Record AEs since previous Visit; follow-up on any previous reported and ongoing AE

FENO testing 

Carry out FOT tests prior to spirometry (FOT will be performed in patients in the US 
and Europe only)
CCI

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
59 (122)

Carry out spirometry (FEV1 and FVC); 2 measurements 30 minutes apart, at least 
23 hours after last dose

Collect sample for exploratory biomarkers

Perform safety laboratory tests 

Carry out urine pregnancy test (all women)


Patients will resume their regular asthma treatment as per the investigator’s
recommendation
4.3
Follow-up period
Descriptions of the procedures for this period are included in the Study Plan (Table 2). The 
Follow-up Contact will comprise of Visit 8 (telephone contact) that will be scheduled within 7 
to 10 days after Visit 7 or last IP intake.
The procedures to be performed are the following:
1.
Record the concomitant medication and procedures information since previous Visit
2.
Record AEs since previous Visit and follow-up on any previous reported and 
ongoing AE
5.
STUDY ASSESSMENTS
An EDC system will be used for data collection and query handling. The Investigator will
ensure that data are recorded in the eCRFs as specified in the study protocol and in accordance 
with the instructions provided.
The Investigator will ensure the accuracy, completeness, and timeliness of the data recorded 
and of the provision of answers to data queries according to the Clinical Study Agreement 
(CSA). The Investigator will sign the completed eCRFs. A copy of the completed eCRFs will 
be archived at the study centre.
5.1
Efficacy assessments
Efficacy measurements will be made at the time indicated in the Study Plan (Table 2).
5.1.1
Primary efficacy assessments
5.1.1.1
Pulmonary function test (spirometry)
A centralised spirometry company, e-Research Technology (ERT) will provide the 
spirometers and all necessary equipment (computer, calibration syringe, printer, paper, ink, 
CCI

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
60 (122)
etc.), a detailed study manual and training to the technicians and PI (as needed) in charge of 
conducting the spirometry for this clinical study. SABA rescue medication 
(salbutamol/albuterol) should be withheld at least 6 hours before any pulmonary function 
tests.
The spirometry measurements are:

FEV1 (volume of air expressed in litres exhaled during the first second of performance 
of the FVC)

FVC (maximal volume of air exhaled in litres with maximally forced expiratory effort 
from a position of maximal inspiration) 
The circumstances around a patient’s tests should be similar in all occasions with respect to 
time of the day, temperature as well as the technician, as much as possible.
Spirometry testing should be completed within a consistent time window relative to the time 
of the baseline assessment ±2 hours to avoid the influence of diurnal variability. 2 spirometry 
measurements 30 minutes apart from each other should be done at 45 minutes (allowed time 
window: 35 to 55 minutes) and 15 minutes before IP administration (allowed time window: 
5 to 30 minutes) at each treatment visit.
The ATS and ERS guidelines (American Thoracic Society Official Documents, 2005) should 
be followed to provide accurate and comparable spirometry data. The spirometer will be 
configured to meet ATS/ERS recommendations for accuracy and precision (Miller et al, 
2005). The computerised spirometer will check the consistency between tests and some of the 
requirements set out in the ATS/ERS spirometry guidelines, and will automatically alert the 
technician to the presence of some deviations from ATS/ERS requirements. However, 
technicians must ensure that the tests are performed with the correct technique. Technicians 
must use their judgement to ensure that the optimum spirometry data is gained from the 
patient at each test session.
These data will be electronically transmitted by the Investigator to ERT typically at the end of 
each patient’s protocol visit. Throughout the study, a centralised reading of spirometry values 
will be performed by independent spirometry experts at ERT, blinded to patient’s IP 
allocation and identity. A 2-step quality control will be done, as follows:

“Over-Read” process: The first review of the spirometry data (including review of tests 
rejected by the technician) to verify that spirometry curves are according to ATS/ERS 
criteria. No changes will be made to the patient’s data.

“Best Test Review” process: During this procedure, the acceptability of the “best effort” 
is assessed first, followed by repeatability. If quality problems are encountered on the 
spirometry curve pre-identified as the “best effort”, ERT will check if there is another 
curve that is acceptable within the measurement. If another spirometry curve is available 
that meets the acceptability standards, the current “best effort” will be deselected and the 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
61 (122)
curve with the highest value specified according to the parameter will become the “best 
effort” for the measurement. This new “best effort” will represent the “best test” in all 
analysis and reporting for the patient. A report will be sent to the Investigator indicating 
the change in “best test” with the reasons for the change. The Investigator will sign the 
report and store it along with their source documentation. The Investigator can contest 
the “best test” change by contacting the study medical monitor and following the 
rejection process.
Prior to the first spirometry, a trained technician should demonstrate the procedure to the 
patient by using a detached mouthpiece and allow practice attempts. Demonstration should be 
repeated and the patient should practise the procedure as many times during the study course 
as deemed necessary. Care should be taken to allow the patient sufficient time to rest between 
efforts so that they do not become excessively fatigued so that spirometry data quality is 
impacted.
Patients who are unable to produce acceptable spirometry tests must not be included in the 
study. The patient should be comfortable before the test; tight clothing should be loosened to 
allow the thorax to move freely. Each manoeuvre comprises 1 “set of tests”: at least
3 measurements (curves) that are technically adequate are needed according to the 
acceptability and repeatability criteria of the ATS/ERS spirometry guidelines. If both the 
acceptability and repeatability criteria are met, and the data are considered optimal for the 
specific patient, the manoeuvre session can conclude after 3 measurements. If 1 or both of 
these criteria are not met, or the data generated are not consistent with the patients normal 
optimal efforts with no potential to improve then, a maximum of 5 additional tests (up to a 
total of 8 tests) should be performed until either both criteria are met, unless the patient is tired 
and cannot provide any further useful data.
The operator performing the spirometry must print every spirometry test. The responsible 
Investigator will need to review, sign and date the printouts.
Details on restrictions prior to lung function testing are available in Section 3.9. 
5.1.2
Secondary efficacy assessments
Use of eDiary: At Visit 1, patients will receive an eDiary (AM3 Diary provided by ERT) to 
complete during the study. Patients will be provided training on the use of eDiary. During the 
Run-in and Treatment Period, patients will report their daily asthma symptoms, rescue 
medication intake (number of puffs/day), budesonide intake, PEF flow (morning and 
evening), and night-time awakening (morning, on a daily basis). During the Treatment Period, 
patients will report their intake of IP on a daily basis. Compliance as measured by eDiary 
should be ≥80% in the Run-in Period and is expected to be ≥80% during the Treatment 
Period.
While at the study centre at Visits 1, 2, 3, 4, 5, 6, and 7, patients will complete the ACQ-5 
within the AM3.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
62 (122)
5.1.2.1
Asthma Control Questionnaire-5
The validated ACQ-5 measures both the adequacy of asthma control and changes in asthma 
control. Patients are asked to recall how their asthma was during the previous week and to
evaluate their symptoms. The questionnaire has 5 items (Appendix B); each item is scored on 
a scale of 0 to 6, where higher scores represent more severe impairment/symptoms. The 
overall ACQ-5 score is the average of the scores for each of the questions included in the 
questionnaire.
The ACQ-5 will be filled in by the patient on site (ACQ-5 is included in the eDiary and can be 
activated on site via a password).
5.1.2.2
Fractional exhaled nitric oxide
To investigate the effect of AZD7594 on airway inflammation, the measurement of FENO will 
be performed in accordance with ATS/ERS guidelines (American Thoracic Society Official 
Documents, 2005). Standardised conditions with regard to exhalation flow rate and duration 
of exhalation will be followed such that plateau definition can be evaluated over a minimum 
of 3 seconds. The concentration of FENO will be measured in units of ppb.
5.1.2.3
Peak expiratory flow
Peak expiratory flow will be measured by the patient at home after completing morning and 
evening diary using a peak flow meter (AM3 device will be provided by ERT) during the 
Run-in and Treatment Period. Patients will be provided with a device at Visit 1 and receive 
training on peak flow monitoring at that time.
The PEF measurement must be done immediately upon waking up, after the patient has 
cleared out mucus and before inhaling the IP and any rescue medication. The evening 
measurement should be done just before going to bed. The measurements should be made 
while standing and the best of 3 attempts should be recorded in eDiary. Patients will have 
peak flow reviewed at study visits, and can be offered re-training if there are any concerns 
with the technique.
5.1.2.4
Rescue medication use
Patients will be provided with a SABA (salbutamol/albuterol), as rescue medication, to be 
used as needed, starting from Visit 1. Patients will be provided with an eDiary at Visit 1 and 
asked to record their daily use of rescue medication during the Run-in and Treatment Period.
SABA rescue medication (salbutamol/albuterol) should be withheld at least 6 hours before 
any pulmonary function tests.
5.1.2.5
Asthma symptom score
During the Run-in and Treatment Periods, patients will record the severity of their asthma 
symptoms during night-time and day-time each morning and evening, using the eDiary. More 
details are available in Appendix C. 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
63 (122)
5.1.2.6
Night-time awakening
Patients will record every morning if they had any awakening because of asthma during the 
last night in their eDiary during the Run-in and Treatment Period.
5.2
Secondary objectives: Safety assessments
5.2.1
Laboratory safety assessments
Blood and urine samples for determination of clinical chemistry, haematology, and urinalysis 
will be taken at the times indicated in the Study Plan (see Section 4). Blood samples should be 
collected after at least 8h-fasting. The results of tests performed at Visit 3 will be regarded as 
baseline data. Additional safety samples may be collected if clinically indicated at the 
discretion of the Investigator.
The date and time of collection will be recorded in the EDC.
Clinical chemistry, haematology, thyroid function, and urinalyses will be analysed by 
Covance. A specific manual will be distributed by Covance.
The laboratory variables to be measured are presented in Table 3.
Table 3
Laboratory safety variables
Haematology
Haematocrit, haemoglobin, erythrocytes (red blood cells), thrombocytes 
(platelets) count, reticulocytes, leucocytes (white blood cells) count, 
leucocytes differential blood count (neutrophils, lymphocytes, monocytes, 
eosinophils and basophils), MCV and MCH 
Clinical 
chemistry
Electrolytes
Sodium, potassium, calcium, phosphate and 
dehydroepiandrosterone sulphate
Enzymes
AST, ALT and ALP
Substrates
Glucose, cholesterol, triglycerides, creatinine, bilirubin,
albumin, CRP and osteocalcin
Endocrinology T4, free T4 and TSH (Visit 1 and Visit 7 only)
Coagulation 
parameters
INR 
Other
HIV, HBsAg and antibodies to HCV (at Visit 1) 
Urinalysisa
Dipstick analysis will be performed at the centre and includes: 
blood/erythrocytes/haemoglobin, protein/albumin, and glucose. If clinically 
relevant abnormalities are detected (positive result in dipstick), the urine 
sample will be sent to the central laboratory for analysis of the sediment.
All patients will undergo a urine drug screenb.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
64 (122)
Reproductive 
hormone 
status and 
pregnancy 
testing
In all women, at Visits 1 and 3 serum and urine pregnancy tests are to be done. 
Only a urine pregnancy test thereafter as marked in Table 2.
LH and FSH (only in women <50 years with amenorrhea for 12 months 
without an alternative medical cause) at Visit 1 only.
a
A midstream urine sample (~30 mL) will be obtained in order to avoid contamination and allow proper 
assessment.
b
The urine drug screen is to include amphetamines, barbiturates, benzodiazepines, cannabinoids, cocaine and 
opiates.
ALP, Alkaline phosphatase; ALT, Alanine aminotransferase; AST, Aspartate aminotransferase; CRP, C-reactive 
protein; FSH, follicle-stimulating hormone; HBsAg, Hepatitis B surface antigen; HCV, Hepatitis C virus; 
HIV, Human immunodeficiency virus; INR, International normalised ratio; LH, luteinizing hormone; MCH, 
Mean corpuscular haemoglobin; MCV, Mean corpuscular volume; TSH, Thyroid stimulating hormone; 
T4, Thyroxine.
The central laboratory will provide the centre with the necessary material and instructions for 
the sampling. Laboratory data generated will be transmitted to the company in charge of Data 
Management activities.
Urine sediment analysis will be performed by Covance, only when a positive result in dipstick
is obtained. The central laboratory will provide the centres with the necessary material and 
instructions for urine sampling collection in case sediment analysis is required. Data from the 
sediment analysis will also be transferred to the company in charge of Data Management 
activities.
In addition, details on the collection, processing, shipment of samples and reporting of the 
results by Covance will be provided to Investigators in the Laboratory Manual.
Safety results will be communicated to the Investigators after each study visit. Investigators 
must review the lab reports upon receipt, write down the assessment for the abnormal 
parameters, sign and date them.
The Investigator should make an assessment of the available results with regard to clinically 
relevant abnormalities. The laboratory results should be signed and dated and retained at 
centre as source data for laboratory variables. For information on how AEs based on 
laboratory tests should be recorded and reported, see Section 6.3.
Note: If a patient shows an aspartate aminotransferase (AST) or alanine aminotransferase 
(ALT) ≥3×upper limit of normal (ULN) or total bilirubin (TBL) ≥2×ULN please refer to
Appendix D, for further instructions.
As per AstraZeneca standards, during the course of the study the Investigator will remain 
vigilant for increases in liver biochemistry. The Investigator is responsible for determining 
whether a patient meets potential Hy’s Law (PHL) criteria at any point during the study. Hy’s 
Law (HL) guidance for the Investigator is included in Appendix D.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
65 (122)
5.2.2
Physical examination
A complete physical examination will be performed at Screening (Visit 1), at Visit 7, and at 
the time of an Early Termination Visit. It and will include an assessment of the following:
general appearance, respiratory, cardiovascular, abdomen, skin, head and neck (including ears, 
eyes, nose, mouth, teeth, and throat), lymph nodes, thyroid, musculoskeletal and neurological 
systems.
A brief physical examination will be performed at Visit 3 and will include an assessment of 
the following: general appearance, lung, cardiovascular system, lymphatic nodes, abdomen, 
musculoskeletal system, neurological system, skin, mouth, and throat will be performed.
Body weight and height will be measured at Visit 1 (Screening) for calculation of BMI.
Patients should be in light indoor clothes without shoes. Body weight will be measured again 
at Visit 7.
Throughout the study, clinically relevant new findings or worsening of a pre-existing 
condition from the medical history/physical examination must be considered an AE and must 
be recorded on the AE form of the eCRF.
5.2.3
ECG
Standard digital ECG evaluations will be recorded after approximately 5 minutes resting in 
supine position and before any blood sampling and spirometry test. Digital ECGs will be 
recorded preferably always by the same technician for each patient.
ERT, as the responsible company for the centralised electrocardiographic assessments, will 
provide the research sites with the MasterScope equipment and supplies, specific training and 
written instructions.
Following an acquisition of a quality ECG tracing, the Investigator or designee will 
electronically transfer the data to ERT.
ECGs will be performed at the times presented in the Study Plan (Table 2).
Individual ECG analysis will be performed by the Investigator at each site. Results will be 
available on the ECG report printed from the MasterScope. The responsible Investigator will 
need to print, date and sign the printed ECG report.
The Investigator will review the reports to assess the clinical relevance of any abnormal 
findings and/or to decide if the patient is or remains eligible for the study. The Investigator 
assessment will be recorded in the eCRF.
The digital ECG will be recorded at 25 mm/sec and will consist of a recording of leads I, II, 
III, aVR, aVL, aVF and V1 to V6 and 10 seconds recording of lead II (rhythm strip). At least 
3 complete evaluable complexes per lead will be recorded. The following ECG parameters 
will be determined:

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
66 (122)

Heart rate (HR)

RR interval: Duration in milliseconds between 2 R peaks of 2 consecutive QRS 
complexes

PR interval: Duration in milliseconds from the beginning of wave P to onset of 
ventricular depolarisation (Q and R)

QRS interval: Duration in milliseconds of the QRS complex

QT interval: Duration in milliseconds from the beginning of Q wave to the end of the 
T-wave

QTc interval: QT interval corrected by HR:

QTcF interval: QT interval corrected using Fridericia’s formula 
(QT[msec]/RR[sec]1/3)
Investigators will assess patients’ eligibility according to the ECG report of Visit 1 and 
Visit 3.
Any abnormal finding in the ECG tracing will be evaluated by the Investigator and will be 
specifically documented and registered in the eCRF.
Throughout the study, clinically relevant new findings or worsening of a pre-existing finding 
in the ECGs (parameters or abnormal findings in the tracing) must be considered an AE and 
must be recorded in the AE eCRF form. For information on how AEs based on ECG results 
should be recorded and reported, see Section 6.3.
In case of technical problems, the Investigator considers any result is clinically relevant or 
doubtful, additional digital ECGs may be performed, using the same equipment, within a 
reasonable time.
5.2.4
Vital signs
The vital signs to be assessed (prior to IP administration) are blood pressure and pulse rate
measurements.
For information on how AEs based on vital signs should be recorded and reported, see 
Section 6.3.
5.2.4.1
Blood pressure
Systolic and diastolic blood pressure (in mm Hg) will be measured after at least 5 minutes 
resting, and before taking any blood sample and conducting any spirometry. Measurements 
will be carried out with the patient in a seated position and preferably always on the same arm.
Data will be recorded on the eCRF.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
67 (122)
If there is any suspicion of unreliable measurement, blood pressure will be measured again.
The value obtained on the second measurement will be considered as definitive and will be the 
one recorded on the eCRF.
5.2.5
Adverse events
Procedures for recording and assessing AEs are included in Section 6.3.
5.2.6
Unscheduled tests
As deemed necessary by the Investigator, additional safety test(s) can be performed at any 
time during the study in order to follow-up the progress of any clinically relevant abnormal 
finding, or to investigate any potential new AE. These additional tests out of the initial 
schedule of the study will not be associated with any study visit.
5.2.7
Repeated tests
Any safety test may be repeated at the Investigator’s discretion when there is any kind of 
problem with the first test (ie, technical problem with the ECG machine, blood sample 
haemolysed, presence of artefacts, etc.). The Investigator should repeat the individual test as 
soon as possible, prior to the next visit.
The repeated tests will be associated with the same visit as the first attempt.
5.3
Reversibility testing
Airflow reversibility is not an outcome variable. Baseline reversibility testing will be 
performed at Visit 2, which can sometimes coincide with Visit 1 (for more details see 
Section 1.4).
Reversibility testing will include a pre-SABA spirometry, followed by administration of 
4 puffs of SABA by oral inhalation (salbutamol/albuterol) and spirometry testing
approximately 15 to 30 minutes after inhalation SABA. If the reversibility criterion is not 
fulfilled, spirometry measurements can be repeated one time, within 30 to 60 minutes 
post-SABA administration.
The reversibility test will be considered positive if patients show increase of FEV1 ≥12% and 
≥200 mL after administration of SABA.
Details on restrictions prior to lung function testing are available in Section 3.9. 
5.4
Secondary objectives: Pharmacokinetics
Only selected sites that are capable of doing quality PK (and cortisol) sampling will 
participate in the PK subset. PK subset will include only patients who are assigned to 
AZD7594 or placebo treatment arms. Only patients who sign a separate ICF (PK and PD ICF) 
will participate in the PK subset. Approximately 20 patients per treatment arm (AZD7594 or 
placebo) are planned to participate in PK sampling from the selected sites.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
68 (122)
Details of the PK parameters and analysis are given in Sections 8.4.3 and 8.5.4, respectively.
5.4.1
Collection of samples
Blood samples for PK analysis will be collected from patients participating in the PK subset at 
the time points (3 mL at each time point) detailed in Table 2.
Samples will be collected, labelled stored and shipped as detailed in the Laboratory Manual.
5.4.2
Determination of drug concentration
Samples for the determination of AZD7594 concentration in plasma will be analysed by 
Covance on behalf of AstraZeneca, using a validated bioanalytical method. Full details of the 
analytical method used will be described in a Bioanalytical Report separate from the clinical 
study report (CSR).
Results will only be reported for samples shipped within a timeframe for which the stability of 
AZD7594 in the samples has been validated and shown to be acceptable.
Samples from patients assigned to placebo will only be analysed if there is cause to expect 
incorrect study drug administration.
5.4.3
Storage and destruction of pharmacokinetic samples
Pharmacokinetic (PK) samples will be disposed of after the Bioanalytical Report finalisation
or 6 months after issuance of the draft Bioanalytical Report (whichever is earlier), unless 
requested for future analyses.
Pharmacokinetic samples may be disposed of or destroyed and anonymised by pooling.
Additional analyses may be conducted on the anonymised, pooled PK samples to further 
evaluate and validate the analytical method. Any results from such analyses may be reported 
separately from the CSR.
Incurred sample reproducibility analysis, if any, will be performed alongside the bioanalysis 
of the test samples. The results from the evaluation will not be reported in the CSR but 
separately in a Bioanalytical Report.
5.5
Secondary objectives: Pharmacodynamics
24-hour cortisol measurement: As a measure of cortisol suppression, 24-hour plasma 
cortisol measurements will be performed in the same subset of patients as PK sampling and a 
selected subset of FF treated patients. Only patients who sign a separate ICF (PK and PD ICF) 
will participate in this subset. The targeted sample size for cortisol sampling is approximately 
20 patients per arm. Plasma cortisol will be measured just before and at the end of the 
Treatment Period. Measurement before the first dose will serve as a baseline value (patients 
will be required to stay overnight for 24 hours before IP administration on Day 1 and for 
24 hours after the last dose on Day 84). Blood sampling will occur on Day −1 (at −24, −22, 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
69 (122)
−20, −18, −16, −14, −12, −8, −4, and −2 hours), on Day 1 (0 hour pre-dose), and on Day 84 
(at 0 [pre-dose], 2, 4, 6, 8, 10, 12, 16, 20, 22 and 24 hours relative to IP administration).
2 mL of blood at each sampling time point will be collected for the plasma cortisol 
bioanalysis.
Samples for determination of cortisol concentration in plasma will be analysed by Covance on 
behalf AstraZeneca using appropriate bioanalytical methods. Full details of the analytical 
methods will be described in a separate Bioanalytical Report.
Samples will be collected, labelled, stored and shipped as detailed in the Laboratory Manual.
5.6
Exploratory objectives: Pharmacogenomics sub-study
5.6.1
Collection of optional genomic samples
The patient’s consent to participate in the genomic research components of the study is 
optional. 
A blood sample for genomic research will be obtained from the patients at Visit 3, ie, after
randomisation, but prior to IP administration, and only after patients agree and sign the 
additional genomics ICF. Although DNA variants are stable parameters, early sample 
collection is preferred to avoid introducing bias through excluding patients who may withdraw 
due to an AE, such patient would be important to include in any genomic analysis. If for any 
reason the sample is not drawn at Visit 3, it may be taken at any visit until the last study visit.
Only one sample should be collected per patient for genomics during the study. 
Samples will be collected, labelled, stored and shipped as detailed in the Laboratory Manual.
5.6.2
Storage and destruction of genomic samples
The processes adopted for the coding and storage of samples for genomic analysis are 
important to maintain patient confidentiality. Samples will be stored for a maximum of 
15 years or as per local regulations from the date of the Last Subject’s Last Visit, after which 
they will be destroyed. DNA is a finite resource that may be used up during analyses. The 
results of any possible future analyses will not be reported in the CSR, but separately in a 
scientific report or publication.
No personal details identifying the individual will be available to AstraZeneca or designated 
organisations working with the DNA.
For more information on the conduct of genomic research, please refer to Appendix E.
5.7
Exploratory objectives: Biomarker analysis 
The patient’s consent to the use of donated biological samples is mandatory. 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
70 (122)
Biomarker testing will be performed to assess response to the study drug AZD7594 and to use 
in patient segmentation.
The effect of AZD7594 will be investigated on the following exploratory biomarkers: 
The results of such analyses will be listed and summarised by treatment, as appropriate and 
will be reported outside the CSR, in a separate report.
5.7.1
Storage, re-use and destruction of biological samples
Samples will be stored for a maximum of 15 years from the date of the Last Subject’s Last 
Visit, after which they will be destroyed. The results of this biomarker research will be 
reported separately in a scientific report or publication. The results of this biomarker research 
may be pooled with biomarker data from other studies with the study drug to generate 
hypotheses to be tested in future research.
5.7.2
Labelling and shipment of biological samples
The PI will ensure that samples are labelled and shipped in accordance with the Laboratory 
Manual and the Biological Substance, Category B Regulations (materials containing or 
suspected to contain infectious substances that do not meet Category A criteria), see 
Appendix F ‘IATA 6.2 Guidance Document’.
Any samples identified as Infectious Category A materials are not shipped and no further 
samples will be taken from the patient unless agreed with AstraZeneca.
5.7.3
Chain of custody of biological samples 
A full chain of custody will be maintained for all samples throughout their lifecycle.
CCI

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
71 (122)
The PI at each centre will keep full traceability of collected biological samples from the 
patients while in storage at the centre until shipment or disposal (where appropriate) and will 
keep documentation of receipt of arrival.
The sample receiver will keep full traceability of the samples while in storage and during use 
until used or disposed of or until further shipment and will keep documentation of receipt of 
arrival.
AstraZeneca will keep oversight of the entire life cycle through internal procedures, 
monitoring of study sites and auditing of external laboratory providers.
Samples retained for further use will be registered in the AstraZeneca Biobank during the 
entire life cycle.
5.7.4
Withdrawal of informed consent for donated biological samples 
If a patient withdraws consent to the use of donated biological samples, the samples will be 
disposed of/destroyed, and the action documented. If samples are already analysed,
AstraZeneca is not obliged to destroy the results of this research.
As collection of the biological samples is an integral part of the study, then the patient is 
withdrawn from further study participation.
The PI:

Will ensure a patient’s withdrawal of informed consent to the use of donated samples is 
notified immediately to AstraZeneca

Will ensure that biological samples from that patient, if stored at the study site, are 
immediately identified, disposed of /destroyed, and the action documented

Will ensure the organisation(s) holding the samples is/are informed about the withdrawn 
consent immediately and that samples are disposed of/destroyed, the action documented 
and the signed document returned to the study site

Will ensure that the patient and AstraZeneca are informed about the sample disposal

Will ensure that the patient is withdrawn from the study and a follow-up visit is 
completed (this does not apply for withdrawal of consent for Gx sample)
5.8
Exploratory objectives: Forced oscillation technique
FOT is a non-invasive, lung function test included in this study to evaluate the study treatment 
effect on small airway physiology. A calibrated system will be used for measurements.
Detailed procedures for performing, recording and analysing FOT data will be described in a 
separate manual. FOT evaluation will be performed in accordance with the schedule provided 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
72 (122)
in Table 2 and prior to spirometry. The assessment at Visit 1 will consist of a training 
manoeuvre for patients. All patients at selected sites will undergo FOT.
Based on pressure and flow data measured in response to a gentle, subsonic oscillatory wave 
(also known as airwave oscillometry [AO]) being superimposed onto the patient’s quiet 
breathing, frequency-dependent resistance and reactance will be calculated by the AO system 
software. A signed and dated copy of the results printout from the equipment must be kept at 
the study site for SDV. The printout must be marked with the study code, patient enrolment 
code, date and time of measurement, and visit number. A number of parameters, including but 
not limited to R5-R20, will be recorded and analysed.
6.
SAFETY REPORTING AND MEDICAL MANAGEMENT
The PI is responsible for ensuring that all staff involved in the study are familiar with the 
content of this section.
The Investigator will closely monitor any AE and will adopt the necessary clinical measures 
to ensure the safety of the patients until the resolution of the AEs.
6.1
Definition of adverse events
An AE is the development of an undesirable medical condition or the deterioration of a 
pre-existing medical condition following or during exposure to a pharmaceutical product, 
whether or not considered causally related to the product. An undesirable medical condition 
can be symptoms (eg, nausea, chest pain), signs (eg, tachycardia, enlarged liver) or the 
abnormal results of an investigation (eg, laboratory findings, ECG). In clinical studies, an AE 
can include an undesirable medical condition occurring at any time, including Run-in or 
wash-out periods, even if no study treatment has been administered.
The term AE is used to include both serious and non-serious AEs.
6.2
Definitions of serious adverse event
A SAE is an AE occurring during any study phase (ie, screening, treatment, follow-up), that 
fulfils one or more of the following criteria:

Results in death

Is immediately life-threatening

Requires in-patient hospitalisation or prolongation of existing hospitalisation 

Results in persistent or significant disability/incapacity or substantial disruption of the 
ability to conduct normal life functions

Is a congenital abnormality or birth defect

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
73 (122)

Is an important medical event that may jeopardize the patient or may require medical 
intervention to prevent one of the outcomes listed above
For further guidance on the definition of a SAE, see Appendix G.
6.3
Recording of adverse events
6.3.1
Time period for collection of adverse events
AEs will be collected from the time of signature of informed consent throughout the Run-in, 
as well as the Treatment period and including the follow-up period (Follow-up Contact or 
Early Termination Visit).
6.3.2
Follow-up of unresolved adverse events
Any AEs that are unresolved at the patient’s last AE assessment in the study will be followed 
up by the Investigator for as long as medically indicated, but without further recording in the 
eCRF. AstraZeneca retains the right to request additional information for any patient with 
ongoing AE(s)/SAE(s) at the end of the study, if judged necessary.
6.3.3
Variables 
The following variables will be collected for each AE:

AE (verbatim)

The date when the AE started and stopped

Maximum intensity

Whether the AE is serious or not

Investigator causality rating against the IP (yes or no)

Action taken with regard to IP

AE caused patient’s withdrawal from study (yes or no)

Outcome
In addition, the following variables will be collected for SAEs:

Date AE met criteria for SAE

Date Investigator became aware of SAE

AE is serious due to (ie, seriousness criteria)

Date of hospitalisation

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
74 (122)

Date of discharge

Probable cause of death

Date of death

Autopsy performed

Causality assessment in relation to study procedure(s)

Causality assessment in relation to other medication

Description of AE
For grading the intensity of an AE, the following intensity rating scale will be used:
1.
Mild: awareness of sign or symptom, but easily tolerated (acceptable)
2.
Moderate: discomfort sufficient to cause interference with normal activities 
(disturbing)
3.
Severe: incapacitating, with inability to perform normal activities (unacceptable)
AEs will be recorded only once with their maximum intensity.
It is important to distinguish between serious and severe AEs. Severity is a measure of 
intensity whereas seriousness is defined by the criteria in Section 6.2. An AE of severe 
intensity need not necessarily be considered serious. For example, nausea that persists for 
several hours may be considered severe nausea, but not a SAE unless it meets the criteria 
shown in Section 6.2. On the other hand, a stroke that results in only a limited degree of 
disability may be considered a mild stroke but would be a SAE when it satisfies the criteria 
shown in Section 6.2.
6.3.4
Causality collection
The Investigator will assess causal relationship between IP administration and each AE, and
answer ‘yes’ or ‘no’ to the question ‘Do you consider that there is a reasonable possibility that 
the event may have been caused by the IP?’
For SAEs, causal relationship will also be assessed for other medication and study procedures.
Note that for SAEs that could be associated with any study procedure the causal relationship is 
implied as ‘yes’.
A guide to the interpretation of the causality question is found in Appendix G.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
75 (122)
6.3.5
Adverse events based on signs and symptoms
All AEs spontaneously reported by the patient or their care provider or reported in response to 
the open question from the study personnel: ‘Have you had any health problems since the 
previous visit/you were last asked?’, or revealed by observation will be collected and recorded 
in the eCRF. When collecting AEs, the recording of diagnoses is preferred (when possible) to 
recording a list of signs and symptoms. However, if a diagnosis is known and there are other 
signs or symptoms that are not generally part of the diagnosis, the diagnosis and each sign or 
symptom will be recorded separately.
6.3.6
Adverse events based on examinations and tests
The results from the Clinical Study Protocol-mandated laboratory tests and vital signs will be 
summarised in the CSR. Deterioration as compared to baseline in protocol-mandated 
laboratory test values and vital signs should therefore only be reported as AEs if they fulfil 
any of the SAE criteria or are the reason for discontinuation of treatment with the IP.
If deterioration in a laboratory value/vital sign is associated with clinical signs and symptoms, 
the sign or symptom will be reported as an AE and the associated laboratory result/vital sign 
will be considered as additional information. Wherever possible the reporting Investigator 
uses the clinical, rather than the laboratory term (eg, anaemia versus low haemoglobin value). 
In the absence of clinical signs or symptoms, clinically relevant deteriorations in non-
mandated parameters should be reported as AE(s).
Deterioration of a laboratory value, which is unequivocally due to disease progression, should 
not be reported as an AE/SAE.
Any new or aggravated clinically relevant abnormal medical finding at a physical examination 
as compared with the baseline assessment will be reported as an AE
6.3.7
Hy’s Law
Cases where a patient shows elevations in liver biochemistry may require further evaluation 
and occurrences of AST or ALT ≥3×ULN together with TBL ≥2×ULN may need to be 
reported as SAEs. Please refer to Appendix D for further instruction on cases of increases in 
liver biochemistry and evaluation of Hy’s Law.
6.3.8
Disease under study 
Asthma symptoms or signs, such as wheeze, cough, chest tightness, dyspnoea, breathlessness 
and phlegm, will be recorded as AEs when:

The sign or symptom is serious according to definitions, and/or

The patient discontinues the study due to the sign or symptom and/or

The sign or symptom is new to the patient or not consistent with the patient’s pre-
existing asthma history (defined as within 1 year of Visit 1) as judged by the Investigator

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
76 (122)
Events, which are unequivocally due to the disease under study should not be reported as an 
AE during the study unless they meet SAE criteria or lead to discontinuation of the IP.
6.4
Reporting of serious adverse events
All SAEs have to be reported, whether or not considered causally related to the IP, or to the 
study procedure(s). All SAEs will be recorded in the eCRF. A paper SAE form will be 
available at the study centres in case the EDC is temporarily unavailable.
If any SAE occurs in the course of the study, then Investigators or other site personnel will
inform the appropriate AstraZeneca representatives or designee within one day ie, 
immediately but no later than 24 hours of when they become aware of it.
The designated AstraZeneca representative or designee will work with the Investigator to 
ensure that all the necessary information is provided to the AstraZeneca Patient Safety data 
entry site (DES) within 1 calendar day of initial receipt for fatal and life-threatening events 
and within 5 calendar days of initial receipt for all other SAEs. Therefore all information 
relevant to the SAEs should be collected and entered as soon as possible.
For fatal or life-threatening AEs where important or relevant information is missing, active 
follow-up will be undertaken immediately. Investigators or other site personnel will inform 
AstraZeneca representatives or designee of any follow-up information on a previously 
reported fatal or life-threatening SAE within 1 calendar day ie, immediately but no later than 
24 hours of when he or she becomes aware of it.
Once the Investigators or other site personnel indicate an AE is serious in the EDC system, an 
automated e-mail alert will be sent to the designated AstraZeneca representative or designee.
If the EDC system is not available, then the Investigator or other study centre personnel will 
report a SAE to the appropriate AstraZeneca representative or designee by e-mail/fax using 
the study-specific paper form, within one calendar day.
The AstraZeneca representative or designee will advise the Investigator/study centre
personnel how to proceed.
In Europe, the reference document for definition of expectedness/listedness is the IB for the 
AstraZeneca drug and for the active comparator product FF.
6.5
Overdose
Any dose above the investigated dose should be considered an overdose. There is no 
experience with overdose and no data regarding overdose with AZD7594 are available from 
clinical studies. However, overdose would likely lead to effects that are typical of GR 
agonists.
There is no known antidote to AZD7594. In cases of known or suspected overdose, 
symptomatic treatment and monitoring of vital functions should be performed according to 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
77 (122)
routine clinical practice. Immediate discontinuation of the drug should be performed, and 
appropriate symptomatic therapy should be instituted.

An overdose with associated AEs is recorded as the AE diagnosis/symptoms on the 
relevant AE modules in the eCRF and on the Overdose eCRF module.

An overdose without associated symptoms is only reported on the Overdose eCRF 
module.
If an overdose on an AstraZeneca study drug occurs in the course of the study, then the 
Investigator or other site personnel will inform appropriate AstraZeneca representatives 
immediately, or no later than 24 hours of when he or she becomes aware of it.
The designated AstraZeneca representative will work with the Investigator to ensure that all 
relevant information is provided to the AstraZeneca Patient Safety DES.
For overdose events associated with a SAE, the standard reporting timelines apply, see 
Section 6.4. For other overdose events, reporting must occur within 30 days.
6.6
Pregnancy
All pregnancies and outcomes of pregnancy should be reported to AstraZeneca.
6.6.1
Maternal exposure
If a patient becomes pregnant during the course of the study, the IP should be discontinued 
immediately. If a female patient, or the female partner of a male patient, who has received IP 
becomes pregnant, the pregnancy will be recorded.
Pregnancy itself is not regarded as an AE unless there is a suspicion that the IP under study 
may have interfered with the effectiveness of a contraceptive medication. Congenital 
abnormalities/birth defects and spontaneous miscarriages should be reported and handled as 
SAEs. Elective abortions without complications should not be handled as AEs. The outcome 
of all pregnancies (spontaneous miscarriage, elective termination, ectopic pregnancy, normal 
birth or congenital abnormality) should be followed up and documented even if the patient
was discontinued from the study.
If any pregnancy occurs during the course of the study, then the Investigator or other site 
personnel will inform the appropriate AstraZeneca representatives within 1 calendar day ie, 
immediately but no later than 24 hours of when he or she becomes aware of it according to 
the safety reporting procedure stated in Section 6.4.
The designated AstraZeneca representative will work with the Investigator to ensure that all 
relevant information is provided to the AstraZeneca Patient Safety DES within 1 or 5 calendar 
days for SAEs (see Section 6.4) and within 30 days for all other pregnancies.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
78 (122)
The same timelines apply when outcome information is available. In case of pregnancy, this 
will be reported in a specific form in the eCRF and the outcome of pregnancy will be reported 
through a paper form (or eCRF, if available).
6.6.2
Paternal exposure 
In case of pregnancy of the patient’s partner, the participant will not be necessarily 
discontinued from the study but the partner’s pregnancy should be reported on the pregnancy 
form (consent from the partner must be obtained before the pregnancy form is completed) 
following the same timeframe and routing as described for any participant’s pregnancy.
Pregnancy of the patient’s partner is not considered to be an AE. These pregnancies will also 
be followed up, and the outcome of the pregnancy (spontaneous miscarriage, elective 
termination, ectopic pregnancy, normal birth or congenital abnormality) should, if possible, be 
obtained and documented.
6.6.3
Time period for the collection of pregnancy information
All pregnancies in female patients or the female partners of male patients, receiving at least 
one administration of the IP will be recorded from first dose to 1 month after the final IP 
administration. Pregnancies of the female partner of male participants are only required to be 
recorded when the male patient received the AZD7594/placebo double-blind treatment.
6.7
Medication error
For the purposes of this clinical study, a medication error is an unintended failure or mistake 
in the treatment process for an AstraZeneca study drug that either causes harm to the patient 
or has the potential to cause harm to the patient.
A medication error is not lack of efficacy of the drug, but rather a human or process related 
failure while the drug is under control of the study centre staff or patient.
Medication errors include situations where an error:

Occurred

Was identified and intercepted before the patient received the drug

Did not occur, but circumstances were recognised that could have led to an error
Examples of events to be reported in clinical studies as medication errors:

Drug name confusion

Dispensing error eg, medication prepared incorrectly, even if it was not actually given to 
the patient

Drug not administered as indicated, for example, wrong route or wrong site of 
administration

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
79 (122)

Drug not taken as indicated eg, tablet dissolved in water when it should be taken as a 
solid tablet 

Drug not stored as instructed eg, kept in the fridge when it should be at room 
temperature 

Wrong patient received the medication (excluding IVRS/IWRS errors)

Wrong drug administered to patient (excluding IVRS/IWRS errors)
Examples of events that do not require reporting as medication errors in clinical studies:

Errors related to or resulting from IVRS/IWRS - including those which lead to one of 
the above listed events that would otherwise have been a medication error 

Patient accidentally missed drug dose(s) eg, forgot to take medication

Accidental overdose (will be captured as an overdose)

Patient failed to return unused medication or empty packaging

Errors related to background and rescue medication, or standard of care medication in 
open-label studies, even if an AZ product 
Medication errors are not regarded as AEs but AEs may occur as a consequence of the 
medication error.
If a medication error occurs in the course of the study, then the Investigator or other site 
personnel will inform the appropriate AstraZeneca representatives within 1 day ie, 
immediately but no later than 24 hours of when he or she becomes aware of it.
The designated AstraZeneca representative works with the Investigator to ensure that all 
relevant information is completed within 1 or 5 calendar days if there is a SAE associated with 
the medication error (see Section 6.4) and within 30 days for all other medication errors.
6.8
Management of IP related toxicities 
Not applicable.
6.9
Study governance and oversight
There will be no steering committee, data monitoring committee or scientific advisory 
committee.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
80 (122)
7.
INVESTIGATIONAL PRODUCT AND OTHER TREATMENTS
7.1
Identity of investigational product(s)
Table 4
Investigational product
Investigational product
Dosage form and strength 
(nominal dose/delivered dose)
Administration route and 
dosing frequency
AZD7594
Inhalation powder (55 μg/50 μg)
Oral inhalation (by SD3FL 
inhaler, DPI) QD
Inhalation powder (99 μg/90 μg)
Inhalation powder (198 μg/180 μg)
Inhalation powder (396 μg/360 μg)
Inhalation powder (792 μg/720 μg)
Placebo to AZD7594
Inhalation powder
Oral inhalation (by SD3FL 
inhaler, DPI) QD
Fluticasone furoate
Inhalation powder (100 μg per 
nominal dose)
Oral inhalation (by ELLIPTA 
inhaler, DPI) QD
DPI, dry powder inhaler; IP, investigational product; QD, once a day
AstraZeneca will provide the test IPs, ie, AZD7594, fluticasone furoate, and placebo
The manufacturing, labelling, packaging and release of AZD7594 and placebo to AZD7594 
will be conducted following Good Manufacturing Practices (GMPs) by AstraZeneca. Each 
DPI will be individually packed in an Aluminium Pouch in a box. Further information will be 
provided in the Investigator’s drug manual.
Patients on ICS monotherapy will receive training for using the budesonide inhaler at Visit 1.
At Visit 3, patients will receive training for AZD7594 or placebo and the comparator (FF)
using appropriate empty inhalers for that purpose. For FF, patients will be instructed to follow
the approved patient information leaflet.
Patients will record their intake of IP daily in their eDiary.
7.2
Dose and treatment regimens
7.2.1
Throughout the study
In addition to study treatment, all patients will be provided with a SABA as rescue medication
(salbutamol/albuterol), to be used throughout the run-in and treatment periods. All patients 
should refrain from taking a SABA as rescue medication 6 hours prior to pulmonary function 
tests.
7.2.2
Run-in Period
This period will typically last 21-28 days (up to a maximum of 35 days, if Visit 3 is repeated)
and consist of 3 visits: a Screening Visit (Visit 1), a Reversibility Visit within 7 days of Visit 1 
(Visit 2) and, if reversibility criteria are met (increase of FEV1 ≥12% and ≥200 mL after 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
81 (122)
administration of a short-acting bronchodilator), a Randomisation Visit within 21-28 days of 
Visit 1 (Visit 3).
Patients found to be eligible at Visit 1 will discontinue all asthma medications and switch to 
low dose budesonide (200 µg BID in Europe and 180 µg BID in US). Visit 1 and Visit 2 can 
occur the same day, unless the patient is taking a medication that precludes reversibility 
testing, including LABA, fixed dose combination ICS/LABA treatment or a LAMA, in which 
case the patient will return for Visit 2 within 2-7 days after Visit 1 to allow sufficient time to 
wash-out their asthma medications.
Reversibility will be assessed at Visit 2. If reversibility criteria are met at Visit 2, patients will 
proceed to Visit 3. Randomisation will occur at Visit 3, within 21 to 28 days of Visit 1. At 
Visit 3, patients who remain symptomatic while on low dose budesonide (as assessed by 
asthma mean symptom score >1 over the previous 7 days or use of a SABA on ≥3 days of the 
previous 7 days) and meet FEV1 criteria (≥40% to ≤90% predicted at either −45 or 
−15 minutes pre-dose) will be randomised to one of 7 possible treatment arms (see below). If 
patients do not meet eligibility (especially symptom criteria or lung function criteria), Visit 3 
can be repeated once within 1 week. If this occurs, additional budesonide may need to be 
provided to the patient to ensure that the patient has run-in medication (budesonide) available 
throughout the run-in period.
7.2.3
Treatment period
This period will include 4 visits (Visit 4 to Visit 7) and will last 12 weeks. Each patient will 
start treatment with AZD7594, placebo to AZD7594 or FF. Treatment will start after the pre-
dose specified procedures and randomisation. Subsequent doses (after Visit 3) of IP will be 
taken at home at approximately the same time of the day, with the exception of doses on study 
visit days (Visits 4 to 6), which will be taken at the study centre. Patients assigned to FF arm 
will take this medication once a day at a daily dose of 100 µg. Patients will take the last dose 
of the IP the day prior to Visit 7, and resume their regular asthma therapy at the completion of 
Visit 7.
Further information regarding the IP kit will be provided in the Investigator drug manual.
7.3
Labelling
Labels will be prepared in accordance with GMP and local regulatory guidelines. The labels 
will fulfil GMP Annex 13 requirements for labelling. The label text will be translated into 
local language, except for the empty training and demo inhalers, which will have a label in 
English only.
The IP will be provided to the patient in an individual kit labelled with a study-specific label.
To allow drug reconciliation and dispensation control, research personnel will record the 
patient ID on the labels of the patient kit, as well as on the aluminium bag labels and inhaler 
labels.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
82 (122)
Patients participating in the study will be provided with an identification card where 
Investigator’s details, including telephone number, are included and will be instructed to keep 
this identification card with them at all times.
7.4
Storage
All study drugs should be kept in a secure place under appropriate storage conditions. The IP 
label on the study drug specifies the appropriate storage.
Further information regarding IP storage at the site will be provided in the Investigator drug 
manual.
7.5
Compliance
The administration of all study drugs (including IPs taken at the clinic) should be recorded in 
the appropriate sections of the eCRF (date and time)/MasterScope (date).
Patients will be provided with an eDiary to record their intake of the IP on a daily basis.
Compliance as measured by the eDiary should be ≥80% in the Run-in Period and is expected 
to be ≥80% during the Treatment Period. Re-training is to be performed for those patients who 
demonstrate lower compliance.
7.6
Accountability
The study drug provided for this study will be used only as directed in the Clinical Study 
Protocol.
The study site staff will account for all study drugs dispensed to and returned from the patient.
Study site staff and the monitor will account for all study drugs received at the site, unused 
study drugs and for appropriate destruction. Certificates of delivery, destruction and return 
should be signed.
7.7
Concomitant and other treatments 
Any treatment taken during the 15 days prior to signing of the ICF must be recorded in the 
Previous and Concomitant Medication eCRF page to ensure proper wash-out of prohibited 
medications.
Patients will be withdrawn from their usual asthma therapy after signing the ICF. During the 
Run-in Period (typically 21-28 days and no longer than 35 days), patients will discontinue all 
current asthma medications and switch to budesonide (200 µg BID in Europe and 180 µg BID 
in US). In addition, a SABA will be provided as rescue medication for the duration of the 
run-in and treatment periods.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
83 (122)
Any new treatments taken or any change in ongoing medications during the participation in 
the study, apart from the IP, will be transcribed onto the corresponding eCRF page by the 
Investigator or designee.
Patients must be instructed to inform the Investigator of plans to take any new treatment 
during the participation in the study, including over-the-counter medicinal and herbal 
products.
In the interest of patient safety and acceptable standards of medical care, patients may be 
allowed to take any medications not listed as either permitted or not permitted (see Table 5
and Table 6) at the discretion of the Investigator. All treatments must be recorded in the 
patients’ eCRF. Any medication taken for medical reasons deemed acceptable by the 
Investigator prior to study entry will be continued at the same dose and conditions during the 
entire experimental phase of the study.
The tables below summarise different possible treatments for asthma and other indications, 
which are allowed and prohibited during the study, with examples of medication and 
applicable restrictions.
For more details on the restrictions that apply during the study, see Section 3.9.
Patients starting any prohibited medications during the study (after Visit 2) should be 
withdrawn from the study.
Table 5
Medications allowed as concomitant medications
Class of drug:
Mucolytics and expectorants not containing bronchodilators
Antihistamines (other than terfenadine, astemizole, mizolastine)
Topical, nasal and/or ocular formulations of glucocorticosteroids, disodium chromoglycate and/or 
nedocromil sodium
Patients on allergen specific immunotherapy must have been on a maintenance regimen for at least 
3 months prior to Visit 1 and remain on a maintenance regimen during the study

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
84 (122)
Table 6
Medications prohibited as concomitant medicationsa
Class of drug:
LABA
Inhaled short- and long-acting anticholinergics
Combination of SABA and SAMA
ICS other than budesonide in the Run-in Period
Xanthines
Oral and inhaled beta2agonists (except salbutamol/albuterol used as rescue medication)
Leukotriene antagonists
Parenteral, oral or rectal steroids
Inhaled disodium cromoglycate, inhaled nedocromil sodium or 5-lipoxygenase inhibitors
Beta-adrenergic blocker, including eye-drops
Xolair® or any other monoclonal or polyclonal antibody therapy taken for any reason
Moderate and strong cytochrome P450 3A4 inhibitors (eg, ketoconazole)b
ICS, Inhaled corticosteroid; LABA, Long-acting beta agonist; SABA, Short-acting beta agonist; SAMA, Short-
acting muscarinic antagonist
a
Medications prohibited from Visit 1 onwards till the end of treatment (Visit 7) or early termination visit
b
For details see Appendix H.
7.7.1
Other treatment
Other medication, which is considered necessary for the patient’s safety and well-being may 
be given at the discretion of the Investigator(s). The administration of the first dose of Run-in 
budesonide and of all concomitant medication (excluding IPs and rescue medications) must be 
recorded in the appropriate sections of the eCRF. Administration of all the remaining doses of 
budesonide should be recorded in the eDiary. Administration of rescue medication should be 
recorded in the eDiary. Use of rescue medication will not be allowed 6 hours prior to any 
spirometry procedure during the study.
Written informed consent must be obtained prior to discontinuation of any asthma treatments 
at Visit 1. At the end of the Treatment Period, patients will resume appropriate asthma 
maintenance therapy.
Non-Investigational products
Product name
Dosage form and strength
Administration route and 
dosing frequency
Budesonide (run-in 
medication)
Inhalation powder
200 μg per nominal dose (ex-US)
180 µg per nominal dose (US)
Oral inhalation by DPI, BID, 
eg, Pulmicort® Turbohaler®
200 μg (AstraZeneca)

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
85 (122)
Product name
Dosage form and strength
Administration route and 
dosing frequency
SABA 
(salbutamol/albuterol), 
rescue medication
Inhalation aerosol
100 μg per nominal dose
90 µg per nominal dose (US)
Oral inhalation by MDI, PRN, 
eg, Sultanol® Dosier-Aerosol 
100 µg (GlaxoSmithKline), 
Ventolin® Evohaler® 100 µg 
(GlaxoSmithKline)
DPI, dry powder inhaler; BID, twice a day; ex-US, excluding United States; MDI, metered-dose inhaler; PRN, 
as needed; SABA, short-acting beta agonist; US, United States
PAREXEL will source and provide budesonide and salbutamol/albuterol.
7.8
Post study access to study treatment
There are no plans to provide study treatment after termination of the study. Patients can 
return to their usual medication after completion of the study.
8.
STATISTICAL ANALYSES
8.1
Statistical considerations
A fully detailed Statistical Analysis Plan (SAP) will be prepared by the Global Study
Statistician from PAREXEL before database lock.
All results will be presented by treatment with descriptive statistics appropriate to the nature 
of the variables. Demographic and baseline characteristics will be presented as follows; for 
continuous variables, the number of non-missing observations, mean, standard deviation (SD), 
standard error (SE) of the mean, 95% confidence interval (CI) of the mean (except safety 
data), median, first and third quartiles, minimum and maximum, will be presented; for 
categorical variables: counts (n) and percentages (%) (where specified) will be presented.
These summaries will be provided by time point of assessment as appropriate.
The SAS® version 9.3 or higher will be used for the data analysis. A complete set of raw data
listings will be appended to the final CSR. All tables, figures and listings will be presented in 
portable document format (PDF) documents without any manual editing, ie, they will appear 
unmodified as programmed by means of the statistical package.
Details on the handling of missing data for the safety or efficacy analyses will be provided in
the SAP.
8.2
Sample size estimate
Approximately 102 patients will be randomised to each arm (overall randomisation ratio 
1:1:1:1:1:1:1) in order to ensure at least 86 evaluable patients per arm. This sample size will 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
86 (122)
provide 80% power to detect a difference in the primary endpoint, ie, a difference of 175 mL 
in change from baseline in trough FEV1 at Week 12 between each dose of AZD7594 and 
placebo, assuming an inter-patient SD of 405 mL, using a 2-sided test with a significance level 
of 0.05 and with an estimated 15% dropout rate.
The targeted total number of patients to be randomised is approximately 714 patients.
Additional patients will be screened to account for any ineligibility rate prior to 
randomisation. From previous studies, the screening failure rate is estimated to be 
approximately 50%, therefore approximately 1400-1500 screened patients will be required to 
achieve the goal of approximately 714 randomised patients.
8.3
Definitions of analysis sets
8.3.1
Full analysis set
The Full Analysis Set (FAS) population is defined as all patients randomised and receiving at 
least 1 dose of randomised IP, irrespective of their protocol adherence and continued 
participation in the study. Patients will be analysed as randomised, irrespective of whether or 
not they have prematurely discontinued. Patients who withdraw consent to participate in the 
study will be included up to the date of their study termination. All efficacy analyses will be 
based on the FAS.
8.3.2
Safety analysis set
The Safety analysis set consists of all randomised patients who received at least one dose of IP
and for whom any post-dose data are available. Patients will be analysed as treated. Any 
important deviations from the randomised treatment assignment will be listed and considered 
when interpreting the safety data. All safety analyses will be based on the Safety analysis set.
8.3.3
Pharmacokinetic analysis set
The PK analysis set is defined as all randomised patients participating in the PK subset, who 
took at least one dose of IP and for whom at least one of the primary PK parameters can be 
calculated, and who have no major protocol deviations considered to impact on the analysis of 
the PK data (eg, disallowed medication, or incorrect study medication received). All protocol 
deviations that occur during the study will be considered for their severity/impact and will be 
taken into consideration when patients are assigned to the PK analysis set.
The exclusion of any patients or time points from the calculation of the PK parameters will be 
documented by the PK scientist including the reason(s) for exclusion. The available 
concentration data and PK parameter data for any patients excluded from the PK analysis set 
will be listed only, and presented in the individual figures of concentration-time plots.
8.3.4
Pharmacodynamic analysis set
The pharmacodynamic analysis set is defined as all randomised patients who took at least one 
dose of IP and for whom 24-hour cortisol sampling was performed and baseline and 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
87 (122)
post-baseline AUEC(0-24) can be calculated, and who have no major protocol deviations 
considered to impact on the analysis of the PD data.
8.3.5
Per Protocol set
The Per Protocol (PP) population is defined as a subset of the FAS population constituted by 
those patients who did not present important deviations of the protocol that may affect 
efficacy (eg, met all inclusion/exclusion criteria liable to affect the efficacy assessment).
8.3.6
Protocol deviations
Deviations from the protocol will be assessed as “important” by PAREXEL in conjunction 
with AstraZeneca. Important deviations from the protocol may lead to the exclusion of 
patients from the PP set and/or other analysis sets. Deviations will be defined before database 
hard lock and unblinding. Important deviations will include the following: 

Violation of inclusion and/or exclusion criteria

Patients who developed withdrawal criteria during the study but were not withdrawn

Wrong study treatment or incorrect dose administered

Administration of prohibited concomitant medications that are expected to influence the 
measurement of the primary endpoint
All important protocol deviations will be listed by patient for all randomised patients. Further 
details will be described in the SAP.
A Blind Data Review Meeting (BDRM) will be held before database hard lock and 
unblinding, in order to assign the patients to each of the analysis sets according to the 
specified definitions. The precise reasons for excluding patients from the study populations 
will be defined in the protocol deviation specification and documented in the BDRM minutes.
8.4
Outcome measures for analyses
8.4.1
Primary efficacy variable
The primary variable is the change from baseline in trough FEV1 at Week 12.
Efficacy analysis will be based on the FAS population that includes all randomised patients 
who received at least 1 dose of randomised study drug. Patients will be included in the 
analysis according to the treatment to which they were randomised.
Baseline for FEV1 will be defined as the mean of the 2 measured values before first IP 
administration (30 minutes apart, at −45 minutes and −15 minutes, before IP administration) 
on Day 1 (Visit 3). If 1 of those 2 measurements is missing, the remaining one will be used 
instead. If both are missing, the screening value will be used. Trough will be defined as the 
mean of the 2 FEV1 measurements 30 minutes apart (23 hours after last dose) pre-dose for 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
88 (122)
every visit throughout treatment period (Visit 4/Week 2 – Visit 7/Week 12). If 1 of these 
2 measurements is missing, the remaining one will be used as trough FEV1 instead.
8.4.2
Secondary efficacy variables
The secondary efficacy variables are ACQ-5, FENO, morning and evening PEF, rescue 
medication use, asthma symptom score, night-time awakenings and daily symptoms as 
recorded in an eDiary.
In addition, secondary efficacy assessment includes evaluating CompEx, a combination of
severe exacerbations of asthma and diary events (ie, combination of eDiary variables).
CompEx is a composite surrogate endpoint for severe exacerbations of asthma, recently 
developed by AstraZeneca (it is not yet a regulatory-approved clinical endpoint). Severe 
exacerbations are defined as those episodes that lead to hospitalisation, emergency room visit 
and/or treatment with oral corticosteroids. Diary events are defined by threshold and slope 
criteria using the following Morning/Evening (am/pm) diary variables:

PEF

Symptom score (0–3)

Rescue use
CompEx can predict treatment efficacy on severe exacerbations in early development before 
running traditional long-term severe exacerbation trials. CompEx can be used broadly in the 
design of new therapeutic interventions for asthma.
8.4.3
Pharmacokinetic variables
Where possible, the following (steady state) PK parameters will be assessed for AZD7594 in a
subset of patients participating in the PK subset and derived by standard non-compartmental 
analysis (NCA):
Css,max
Observed maximum concentration at steady state, taken directly from the 
individual concentration-time curve
Css,min
Observed minimum concentration at the end of the dosing interval
tss,max
Time to maximum concentration at steady state, taken directly from the 
individual concentration-time curve
AUClast
Area under the plasma concentration-curve from time zero to the time of last 
quantifiable analyte concentration
AUCτ
Area under the plasma concentration-curve within a dosing interval
Css,avg
Average plasma concentration during a dosing interval at steady state, 
estimated as AUC τ/24
Css,max/D
Dose normalised Css max

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
89 (122)
AUC τ/D
Dose normalised AUCτ
%Fluctuation
Fluctuation index during a dosing interval estimated as 
100*(Css,max – Css,min)/Css,avg (%), where Css,min is the minimum concentration at 
the end of the dosing interval
Additional parameters may be determined as appropriate.
The plasma concentration-time data from patients participating in the PK subset may be 
pooled with other PK data to build a population PK model. PK modelling will be the 
responsibility of AstraZeneca and will be described in a separate Data Analysis Plan. The 
results of any such modelling will be reported outside the CSR.
8.4.4
Pharmacodynamic variables
The pharmacodynamics of AZD7594 will be assessed by measuring cortisol suppression in 
the same subset of patients as PK sampling and a selected subset of FF treated patients.
Cortisol suppression will imply the measurement of the area under the plasma cortisol 
concentration-time curve from zero to 24 hours after dosing (AUEC(0-24)) as compared to 
placebo.
8.4.5
Exploratory variables
Exploratory outcomes will include the use of FOT as a measure of small airways involvement,
biomarker analysis and a Gx analysis.
No multiplicity adjustments will be done for secondary or other efficacy variables.
8.4.6
Safety outcomes
Safety will be assessed by descriptive analysis of vital signs, ECGs, laboratory assessments 
and AEs reported. 
Safety analyses will be based on Safety analysis set that includes all patients who received at 
least 1 dose of the IP, and for whom any post-dose data are available. Throughout the safety 
results sections, erroneously treated patients (eg, those randomised to AZD7594 but actually 
given placebo) will be accounted for in the actual treatment group.
8.4.7
Interim futility analysis
Not applicable.
8.5
Methods for statistical analyses
8.5.1
Demographic and baseline characteristics
Analyses of demographic and baseline characteristics will be performed on the FAS.
Demographic characteristics to be assessed are age, sex, race, ethnicity, country, height, 
weight and BMI. Baseline characteristics to be assessed include: 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
90 (122)

Smoking duration (years) and smoking consumption (total pack-years)

Medical history (including physical findings, asthma and surgical history) classified by 
System Organ Class and Preferred Term

Asthma duration (years)

Time since last exacerbation (days)

Asthma severity at screening according to GINA Guidelines 2018 using the pre-SABA 
value at Visit 2: 

Group 1: FEV1 ≥80% predicted

Group 2: 60% <FEV1 <80% predicted

Group 3: FEV1 ≤60% predicted

Absolute values of the FEV1 and FVC (pre- and post-bronchodilator test) at screening

Percent of predicted values of FEV1 and FVC at screening

Ratio FEV1/FVC at screening

Mean bronchodilator reversibility (FEV1 change in mL from pre-bronchodilator test 
value) at Visit 2

Percentage of bronchodilator reversibility (% FEV1 increase over pre-bronchodilator test 
value) at Visit 2
Screening values for ECGs, laboratory assessments, pregnancy tests and blood pressure will 
not be presented in the tables corresponding to demographic and screening characteristics but 
together with the corresponding assessments after baseline and with the changes from baseline 
to ease the interpretation of these safety outcomes.
Appropriate descriptive statistics will be provided for these variables. No statistical tests will 
be performed.
All demographic and baseline characteristics, will be analysed using the FAS.
8.5.2
Analyses of prior and concomitant (including rescue medication)
Analyses of prior and concomitant medication will be performed on the Safety analysis set. 
8.5.2.1
Prior medication
Prior medication is defined as any medication taken within 15 days before the ICF signature 
date and up to the first dose of IP. 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
91 (122)
The number and percentage of patients who used any prior medication (15 days before ICF 
signing up to IP intake) will be summarised overall by therapeutic categories. Anatomical 
Therapeutic Chemical Code (third level), and preferred name. Patients with multiple drug 
usage in the same preferred name will be counted only once.
Additionally, a subset of the previous summary will be produced presenting the number and 
percentage of patients who used any prior medication for asthma within 15 days before the 
ICF signing up to first IP intake by therapeutic categories (eg, LABA + ICS). Therapeutic 
categories will be defined in the SAP.
8.5.2.2
Concomitant medication
Concomitant medication is defined as any medication taken during the study treatment 
duration between the date of the first dose of study drug and the date of the last dose of study 
drug (inclusive). Any medications started after the date of the last dose of double-blind study 
drug (AZD7594 or placebo) will not be considered concomitant medications.
Concomitant medications will be analysed based on 2 periods: 1) medications that the patient 
started to take before the randomisation and continued after the first study drug 
administration, and 2) medications that the patient started to take during the double-blind 
treatment duration.
Concomitant medication will be summarised descriptively for the Safety analysis set.
8.5.3
Analysis of the efficacy variable(s)
The analysis of all the efficacy variables will be performed on the FAS. In addition, the 
primary efficacy variable will also be analysed using the PP set. 
8.5.3.1
Primary efficacy variable
The primary efficacy variable, change from baseline in trough FEV1 at Week 12, will be 
analysed by means of MMRM using all post-baseline visit trough FEV1 data throughout the 
treatment period (Visit 4/Week 2 – Visit 7/Week 12). The model will include treatment, visit, 
treatment by visit interaction, and region (US, Japan, and RoW) as fixed effects as well as 
baseline FEV1, and baseline FEV1 by visit interaction as covariates. This analysis will be 
based on the FAS (primary analysis population) and the PP set (secondary analysis
population, sensitivity analysis).
The within-patient correlation will be modelled using the unstructured covariance matrix. The 
Kenward-Roger approximation will be used to estimate denominator degrees of freedom. The 
analysis will be performed using only the observed cases without imputation of missing 
values. If the model does not converge, then the compound symmetry covariance structure 
will be used. Restricted maximum likelihood method will be applied.
Each treatment effect and treatment differences between all active treatments, administered 
once a day, versus placebo at each visit will be estimated by the Least Square (LS) means on 
the correspondent treatment by visit interaction, along with their SE and 95% CI, and the 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
92 (122)
p-value corresponding to the between-treatment group difference. The comparison between 
active comparator (FF) and placebo is used for bench marking.
A step-down closed testing procedure will be applied to control the overall type I error rate 
due to multiplicity on the primary treatment comparisons for the primary endpoint using the 
following hierarchy for the primary comparisons:
Change from baseline in trough FEV1 at Week 12:

AZD7594 DPI 792 µg [nominal strength]/720 µg [delivered dose] QD versus placebo.

AZD7594 DPI 396 µg/360 µg QD versus placebo.

AZD7594 DPI 198 µg/180 µg QD versus placebo.

AZD7594 DPI 99 µg/90 µg QD versus placebo.

AZD7594 DPI 55 µg/50 µg QD versus placebo.
The previous dose will be required to be significant at the two-sided 0.05 level in order to 
infer on the following dose of this pre-defined hierarchy. If a given statistical test fails to 
reject the null hypothesis of no treatment difference at the two-sided significance level of 
0.05, then all tests lower down in the hierarchy will be interpreted as descriptive only.
In addition, the overall treatment effect and treatment difference over the double-blind 
treatment period will be estimated by the LS means and the difference in LS means on the 
treatment factor, along with the SEs, and 95% CIs and the p-value corresponding to the 
between-treatment group difference.
Subgroup analyses
Treatment effects will be evaluated for trough FEV1 at Week 12 in the following subgroup of 
patients:

% Predicted FEV1 (≥40 to ≤65% or >65 to ≤90%) at Visit 3 (randomisation).

Prior use of ICS (low/medium/high dose).

Smoking status (non-smoker, former smoker).

Region (US, Japan, and RoW).
These variables will be analysed using similar MMRM as the primary variable.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
93 (122)
8.5.3.2
Secondary efficacy variables
These analyses will be based on the FAS set. The following variables are secondary efficacy 
variables:

Change from baseline in trough FEV1 at Weeks 2, 4, 8, and average over the treatment 
period.

Change from baseline in FENO at Weeks 2, 4, 8, 12, and average over the treatment 
period (analysis to be done on natural log-scale and results back-transformed to linear 
scale)

Change from baseline in trough FVC at Week 12 and average over the treatment 
period

Change from baseline in ACQ-5 at Week 12 and average over the treatment period

Change from baseline in average morning PEF over the treatment period

Change from baseline in average evening PEF over the treatment period

Change from baseline in average daily use of rescue medication over the treatment 
period

Change from baseline in percent night-time awakening days over the treatment period

Change from baseline in average daily asthma symptom score over the treatment 
period

Change from baseline in percent asthma control days over the treatment period

Change from baseline in percent rescue-free days over the treatment period

Change from baseline in percent symptom-free days over the treatment period

Time to first CompEx event, time to recurrent CompEx event, and CompEx event rate
Similar mixed models for repeated measures as for the primary variable will be used for the 
analysis at specified visit week. Analysis of covariance (ANCOVA) with treatment and region 
(ie, US, Japan, and RoW) as fixed effects, and baseline as covariate will be used for the 
analysis of average over the treatment period. 
CompEx is a composite endpoint combining severe exacerbation and diary events. Severe 
exacerbations are defined as those episodes that lead to hospitalisation, emergency room visit 
and/or treatment with oral corticosteroids.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
94 (122)
Diary events are defined by threshold and slope criteria using the following Morning/Evening 
(am/pm) diary variables:

PEF

Symptom score (0–3)

Rescue use 
CompEx will be analysed with a Cox proportional hazards model, a marginal means/rates 
model, and a negative binomial model for time to first event, time to recurrent event, and 
event rate respectively, with region and treatment included as covariates in all models. Further
details on the derivation and analysis of this variable will be given in the SAP.
No multiplicity adjustments will be applied for the secondary variables.
8.5.4
Analysis of pharmacokinetic variables
8.5.4.1
Calculation or derivation of the pharmacokinetic parameters
Pharmacokinetic analyses will be performed by Covance Clinical Pharmacokinetic Alliance 
(CPKA) on behalf of AstraZeneca R&D. (Steady state) PK parameters will be derived using 
standard non-compartmental methods with Phoenix® Winnonlin®, version 6.3 or higher. The 
PK analysis will be carried out, where possible, using actual times recorded in the raw data. If 
actual times are missing, nominal times may be used.
Pharmacokinetic analyses will be conducted according to AstraZeneca guidelines for PK 
analyses, if not otherwise indicated.
Plasma concentrations below the lower limit of quantification (BLQ) from the time of 
pre-dose sampling (t=0) up to the time of the first quantifiable concentration will be set to a 
value of 0. After this point, BLQ plasma concentrations will be set to missing for all 
concentration profiles. Also, if 2 or more consecutive BLQ concentrations are followed by 
quantifiable concentrations in the terminal portion of the concentration-curve, the profile will 
be deemed to have terminated and therefore these quantifiable values will be set to missing for 
the calculation of the PK parameters unless there is a scientific rationale not to do so 
documented in the PK analysis notes.
If an entire concentration-time profile is BLQ, the profile is excluded from the PK analysis. 
Area under the plasma concentration-curve will be calculated using trapezoidal methods when 
concentration is increasing and logarithmic trapezoidal method when concentrations are 
decreasing.
The minimum requirement for the calculation of AUC will be the inclusion of at least 
3 consecutive plasma concentrations above the lower limit of quantitation, with at least 1 of 
these concentrations following Cmax. 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
95 (122)
Further details regarding the calculation of the PK parameters will be described in the SAP.
8.5.4.2
Statistical analysis of the Pharmacokinetic Parameters
A listing of PK blood sample collection times, as well as derived sampling time deviations 
will be provided.
Plasma concentrations will be listed and summarised by treatment using appropriate 
descriptive statistics. Where possible, the following descriptive statistics will be presented: n, 
geometric mean, geometric coefficient of variation, arithmetic mean, arithmetic SD, median, 
minimum and maximum based on the PK analysis set. Plasma concentrations that are BLQ 
will be handled as described in the SAP.
Combined individual plasma concentration per dose level (spaghetti plots) will be presented in 
linear and semi-logarithmic scale with separate plots for each dose level.
Figures for the geometric mean concentration-time data will be presented for all doses 
overlaid on the same plot, in both a linear and semi-logarithmic scale.
Additional graphical presentations of PK data may be added at the discretion of the PK 
scientist. More details will be provided in the SAP.
All plasma PK parameters will be listed for each patient and summarised by treatment using 
similar descriptive statistics. For tmax only n, median, minimum and maximum will be 
reported.
Data from patients excluded from the PK analysis set will be included in the data listings, but 
not in the descriptive statistics or in the inferential statistics.
Dose proportionality of AZD7594 on Week 12 (Day 84) will be assessed graphically and 
analysed using the power model approach with the natural logarithm of PK parameters (Css,max
and AUCτ on Week 12/Day 84) as the dependent variable and the logarithm of the dose as the 
independent variable.
All descriptive and inferential statistical computations will be performed using SAS Version 
9.2, or higher. Graphics may be prepared with SAS® (Version 9.4 or higher).
Further details regarding the model specifications will be provided in the SAP.
8.5.5
Pharmacodynamic analysis
The AUEC(0-24) (area under the plasma cortisol concentration-time curve from zero to 
24 hours after dose) will be calculated by using the linear trapezoidal rule from 0 to 24 hours. 
The AUEC(0-24) will be listed by patient and time point and summarised (n, geometric mean, 
geometric coefficient of variation, median, arithmetic mean, arithmetic SD, minimum and 
maximum) by treatment. Further details regarding the handling of missing measurements will 
be described in the SAP.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
96 (122)
8.5.5.1
Statistical analysis of the pharmacodynamic parameter
The change from baseline in log-transformed AUEC(0-24) will be analysed by ANCOVA 
approach with treatment as a fixed effect, baseline log AUEC as a covariate, and patient as a 
random effect. The estimated ratio for each AZD7594 arm versus placebo and FF versus 
placebo, and their associated 95% CIs will be presented.
8.5.6
Analysis of safety outcomes
All analyses of safety and tolerability outcomes will be performed on the Safety analysis set. 
Individual safety and tolerability data will be provided in data listings and summarised as 
appropriate by treatment and overall. Continuous variables (laboratory parameters, ECG, and 
blood pressure) will be summarised using descriptive statistics (n, mean, SD, minimum, 
median, and maximum) as appropriate by scheduled assessment time point. Where applicable, 
data will be summarised for the observed value, and for the corresponding change from 
baseline/screening. Categorical variables will be summarised in frequency tables (counts and 
percentage) as appropriate by scheduled assessment time point too. 
Change from baseline will be calculated as the differences between the post-dose value at 
each time point and the morning value prior to first administration of the IP. 
For all variables, including blood pressure, digital ECG parameters, and laboratory tests, the 
baseline values will be defined as the values obtained prior to the first morning IP 
administration on Day 1 of Visit 3.
Any clinically relevant new physical examination findings or worsening of a pre-existing 
physical examination finding that were to be recorded as an AE will be presented with the 
AEs.
AEs: The number and percentage of patients who experienced 1 or more treatment-emergent 
adverse events (TEAEs), and the number of TEAE occurrences will be tabulated by treatment 
group. An AE will be considered a TEAE if it starts after the intake of the first dose of IP and 
up to and including 7 days after the last dose of IP. TEAEs will be presented in data listings 
with System Organ Class, Preferred Term, intensity, causality, action taken, seriousness 
criteria and treatment group using descriptive statistics.
ECG findings will be presented with counts and percentages by treatment.
ECG results and ECG abnormalities will also be listed. 
An analysis of potentially clinically significant ECG values on QT, QTcF, QRS and PR 
interval, and HR will be performed. The criteria based on severity will be defined in the SAP. 
The number and percentage of patients with potentially clinically significant ECG values will 
be tabulated across time and treatment group.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
97 (122)
Blood Pressure: Systolic blood pressure and diastolic blood pressure (mm Hg) will be 
analysed at each scheduled assessment time point using descriptive statistics for both observed 
absolute values and changes from baseline. 
Additionally, the number and percentage of patient with notable changes from pre-dose at 
each post-dose time point for systolic and diastolic blood pressure and pulse rate will be 
presented by treatment group. The criteria for notable changes in blood pressure will be 
detailed in the SAP.
Laboratory tests: Observed absolute values and changes from baseline in haematology, serum 
biochemistry and urinalysis parameters will be summarised by treatment group using 
descriptive statistics at each scheduled assessment time point. 
Out of range values will be flagged in the data listings.
Additionally, out of range values in laboratory parameters will be summarised by means of 
shift contingency tables comparing the values (post-dose vs screening and follow-up vs 
screening). 
8.5.7
Exploratory analysis
Except for the model-based analyses (PK or PK-PD), all exploratory analyses will be 
performed on the FAS.
8.5.7.1
Additional analysis
An ACQ-5 responder analysis will be explored based on the percentage of ACQ-5 responders 
at Weeks 2, 4, 8, and 12. An ACQ-5 responder is defined as a patient with a decrease from 
baseline of ≥0.5 in their ACQ-5 score. Percentage of ACQ-5 responders will be analysed by 
means of a logistic regression using a Generalized Linear Mixed Effect Model (GLIMMIX)
approach.
The following variables will be analysed at Week 12 by using mixed models for repeated 
measures (with similar models as for the primary variable):

Change from baseline (pre-dose, Visit 3) in measures of resistance and reactance via 
FOT including R5-R20
The results of any exploratory Gx analyses will be reported outside the CSR.
In addition, dose-response modelling for trough FEV1 and the relationship between AZD7594 
exposure and plasma cortisol AUEC(0-24) may be explored. A PK-PD population modelling 
approach with combined clinical study data may be used to characterize the effect of 
CCI
CCI

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
98 (122)
AZD7594 on cortisol suppression, as well as PK-PD and clinical efficacy and/or safety 
relationships. Any such PK-PD modelling will be the responsibility of AstraZeneca and will 
be described in a separate Data Analysis Plan. The results of any such modelling will be 
reported outside the CSR.
9.
STUDY AND DATA MANAGEMENT 
9.1
Training of study centre staff
Before the first patient is entered into the study, a PAREXEL representative will review and 
discuss the requirements of the Clinical Study Protocol and related documents with the 
investigational staff and also train them in any study-specific procedures and system(s) 
utilised.
The PI will ensure that appropriate training relevant to the study is given to all of these staff, 
and that any new information relevant to the performance of this study is forwarded to the 
staff involved.
The PI will maintain a record of all individuals involved in the study (medical, nursing and 
other staff).
9.2
Monitoring of the study
During the study, a PAREXEL representative will have regular contacts with the study centre, 
including visits to:

Provide information and support to the Investigator(s)

Confirm that facilities remain acceptable

Confirm that the investigational team is adhering to the protocol, that data are being 
accurately and timely recorded in the eCRFs, that biological samples are handled in 
accordance with the Laboratory Manual and that study drug accountability checks are 
being performed

Perform source data verification (a comparison of the data in the eCRFs with the 
patient’s medical records at the hospital or practice, and other records relevant to the 
study) including verification of informed consent of participating patients. This will 
require direct access to all original records for each patient (eg, clinic charts)

Ensure withdrawal of informed consent to the use of the patient’s biological samples is 
reported and biological samples are identified and disposed of/destroyed accordingly, 
and the action is documented, and reported to the patient
The PAREXEL representative will be available between visits if the Investigator(s) or other 
staff at the centre needs information and advice about the study conduct.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
99 (122)
9.2.1
Source data
Refer to the CSA for location of source data.
9.2.2
Study agreements
The PI at each centre should comply with all the terms, conditions, and obligations of the 
CSA, or equivalent, for this study. In the event of any inconsistency between this Clinical 
Study Protocol and the CSA, the terms of Clinical Study Protocol shall prevail with respect to 
the conduct of the study and the treatment of patients and in all other respects, not relating to 
study conduct or treatment of patients, the terms of the CSA shall prevail.
Agreements between AstraZeneca and the PI should be in place before any study-related 
procedures can take place, or patients are enrolled.
9.2.3
Archiving of study documents
The Investigator follows the principles outlined in the CSA.
9.3
Study timetable and end of study
The end of the study is defined as ‘the last visit of the last patient undergoing the study’. For 
this study, the last visit corresponds to the Follow-up Contact (Visit 8).
The study is expected to start (first patient enrolled) in Quarter 3, 2018 and to end (last patient 
completed) by Quarter 4, 2019.
The study may be terminated at individual centres if the study procedures are not being 
performed according to Good Clinical Practice (GCP), or if recruitment is slow. AstraZeneca 
may also terminate the entire study prematurely if concerns for safety arise within this study 
or in any other study with AZD7594 (see section 3.12).
9.4
Data management by PAREXEL
Data management will be performed by PAREXEL. Data Management processes will be 
detailed in the Data Management Plan.
Database and data validation
DataLabs (an EDC system) will be used to collect and manage clinical data.
The Investigators (and appropriately authorised staff) will be given access (after successful 
completion of training) to DataLabs for use in this study. The DataLabs eCRF is specifically 
designed for the collection of clinical data in an electronic format. Access and rights to the 
eCRF will be carefully controlled and configured according to each individual’s role 
throughout the study. 
The DataLabs eCRF should be completed for each patient included in the study and should 
reflect the latest observations on the patients participating in the study. Therefore, the eCRFs 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
100 (122)
are to be completed as soon as possible during or immediately after the patient’s visit or 
assessment. The Investigator must verify that all data entries in the eCRF are accurate and 
correct. If some assessments cannot be done, or if certain information is unavailable, not 
applicable, or unknown, the Investigator should indicate this in the eCRF. 
After completion, the Investigator will be required to electronically sign off the clinical data.
The Data Validation Specification (DVS) will be created by PAREXEL and will contain 
details of consistency and structural checks to be run against the data as well as listings 
required for PAREXEL data cleaning and review.
Automated edit checks within DataLabs are available once the data has been entered and 
saved. Additional queries will also be identified during the study via listing review by 
PAREXEL personnel. These include queries relating to clinical data coding, external vendor 
data etc. Queries for data inconsistences or clarifications will be issued within the eCRF and 
updates will be made by the appropriate trained site personnel.
Database, edit checks, listings (programmed for data review) and any programming implying 
data conversions will be appropriately validated by PAREXEL.
Data queries will be raised for inconsistent or impossible data. All entries to the study 
database will be available in an audit trail.
Clinical coding
AEs and medical/surgical history will be classified according to the terminology of the 
Medical Dictionary for Regulatory Activities (MedDRA). Medications will be classified 
according to the WHO-Drug Enhanced plus Herbal Dictionary. Classification coding will be 
performed by PAREXEL.
Serious adverse event reconciliation
SAE reconciliation reports are produced and reconciled with the Patient Safety.
Data mapping
Data will be collected during the study execution and will be mapped into Study Data 
Tabulation Model (SDTM) datasets in an ongoing basis.
Transfers of SDTM datasets will be periodically received at AstraZeneca during the study and 
after database lock. The frequency of these transfers will be agreed between AstraZeneca and 
PAREXEL and documented within the DMP.
Management of external data
In addition to the eCRF data, PAREXEL will receive electronic records for external data 
processed by vendors (Covance for safety laboratory tests and PK, and ERT for MasterScope 
spirometry, ECG, FENO, FOT, IP administration, and eDiaries). A reconciliation process will 

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
101 (122)
be performed by PAREXEL of eCRF data against the rest of the data sources to ensure 
consistency of the common data.
Audit trail of all databases will be maintained in order to protect the authenticity and integrity 
of the clinical data.
When all data have been coded, validated, and electronically signed, the database will be 
locked. Any treatment revealing data (such as the treatment information and PK data) will be 
added to the set of data to be transferred after the database has been locked and the 
populations’ definition has been completed.
9.5
Data management by AstraZeneca
Data Management of genotype data
Any genotype data generated in this study will be stored in the AstraZeneca genotyping LIMS 
database, or other appropriate secure system within AstraZeneca and/or any other organisation
contracted to work with AstraZeneca to analyse samples. The results from this genomic
research will not be reported in the CSR but in a separate report, as appropriate.
Data associated with human biological samples
Data associated with biological samples will be transferred from laboratory (ies) internal or
external to AstraZeneca.
10.
ETHICAL AND REGULATORY REQUIREMENTS
10.1
Ethical conduct of the study
The study will be performed in accordance with ethical principles that have their origin in the 
Declaration of Helsinki and are consistent with ICH/GCP, applicable regulatory requirements 
and the AstraZeneca policy on Bioethics and Human Biological Samples.
10.2
Patient data protection
The ICF will incorporate (or, in some cases, be accompanied by a separate document 
incorporating) wording that complies with relevant data protection and privacy legislation.
10.3
Ethics and regulatory review
An IEC/IRB should approve the final study protocol, including the final version of the ICF 
and any other written information and/or materials to be provided to the patients. The 
Investigator will ensure the distribution of these documents to the applicable IEC/IRB, and to 
the study centre staff.
The opinion of the IEC/IRB should be given in writing. The Investigator should submit the 
written local approval to AstraZeneca before enrolment of any patient into the study.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
102 (122)
The IEC/IRB should approve all advertising used to recruit patients for the study.
AstraZeneca should approve any modifications to the ICF that are needed to meet local 
requirements.
If required by local regulations, the protocol should be re-approved by the IEC/IRB annually.
Before enrolment of any patient into the study, the final study protocol, including the final 
version of the ICF, will be approved by the national Regulatory Authority or a notification to 
the national Regulatory Authority will be done, according to local regulations.
AstraZeneca or its representative will handle the distribution of any of these documents to the 
national Regulatory Authorities.
AstraZeneca or its representative will provide Regulatory Authorities, ECs and PIs with safety 
updates/reports according to local requirements.
Each PI is responsible for providing the local IEC/IRB with reports of any serious and 
unexpected adverse drug reactions from any other study conducted with the IP. AstraZeneca 
will provide this information to the PI so that he/she can meet these reporting requirements.
10.4
Informed consent
The PI(s) at each centre will:

Ensure each patient is given full and adequate oral and written information about the 
nature, purpose, possible risk and benefit of the study

Ensure each patient is notified that they are free to discontinue from the study at any 
time

Ensure that each patient is given the opportunity to ask questions and allowed time to 
consider the information provided

Ensure each patient provides a signed and dated ICF before conducting any study 
procedure 

Ensure the original, signed ICF(s) is/are stored in the Investigator’s Study File

Ensure a copy of the signed ICF is given to the patient

Ensure that any incentives for patients who participate in the study, as well as any 
provisions for patients harmed as a consequence of study participation, are described in 
the ICF that is approved by an IEC/IRB

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
103 (122)
10.5
Changes to the clinical study protocol and informed consent form
Study procedures will not be changed without the mutual agreement of the International 
co-ordinating Investigator and AstraZeneca.
If there are any substantial changes to the study protocol, then these changes will be 
documented in a study protocol amendment and where required in a new version of the study 
protocol (Revised Clinical Study Protocol).
The amendment is to be approved by the relevant IEC/IRB and if applicable, also the national 
Regulatory Authority approval, before implementation. Local requirements are to be followed 
for revised protocols.
AstraZeneca will distribute any subsequent amendments and new versions of the protocol to 
each PI. For distribution to IEC/IRB see Section 10.3.
If a protocol amendment requires a change to a centre’s ICF, AstraZeneca and the centre’s 
IEC/IRB are to approve the revised ICF before the revised form is used.
If local regulations require it, any administrative change will be communicated to or approved 
by each IEC/IRB.
10.6
Audits and inspections
Authorised representatives of AstraZeneca, a Regulatory Authority, or an IEC may perform 
audits or inspections at the centre, including source data verification. The purpose of an audit 
or inspection is to systematically and independently examine all study-related activities and 
documents, to determine whether these activities were conducted, and data were recorded, 
analysed, and accurately reported according to the protocol, GCP, guidelines of the ICH, and 
any applicable regulatory requirements. The Investigator will contact PAREXEL/AstraZeneca
immediately if contacted by a Regulatory Agency about an inspection at the centre.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
104 (122)
11.
LIST OF REFERENCES
American Thoracic Society Official Documents, 2005
Available from URL: https://www.thoracic.org/statements/pulmonary-function.php
Bleeker et al, 2012
Bleecker ER, Bateman ED, Busse WW, Woodcock A, Frith L, House KW, Jacques L, Davis 
AM, Haumann B, Lötvall J. Once-daily fluticasone furoate is efficacious in patients with 
symptomatic asthma on low-dose inhaled corticosteroids. Ann Allergy Asthma Immunol. 
2012; 109(5):353-358.
Busse et al, 2012
Busse WW, Bleecker ER, Bateman ED, Lötvall J, Forth R, Davis AM, Jacques L, Haumann 
B, Woodcock A. Fluticasone furoate demonstrates efficacy in patients with asthma 
symptomatic on medium doses of inhaled corticosteroid therapy: an 8-week, randomised, 
placebo-controlled trial. Thorax. 2012; 67(1):35-41. 
CHMP/EWP/2922/01 Rev.1, 2015
Committee for Medicinal Products of Human Use (CHMP) Guideline on the clinical 
investigation of medicinal products for the treatment of asthma.
Christensson, 2008
Christensson C, Thorén A, Lindberg B. Safety of inhaled budesonide: clinical manifestations 
of systemic corticosteroid-related adverse effects. Drug Saf. 2008;31(11):965-88.
Dahl, 2006
Dahl R. Systemic side effects of inhaled corticosteroids in patients with asthma. Respir Med. 
2006;100(8):1307-17.
GINA, 2018
Global Strategy for Asthma Management and Prevention. Updated 2018. Available from 
http://www.ginasthma.org/ (accessed on 24 March 2018).
GOLD, 2017
The Global initiative for Chronic Obstructive Lung Disease. Global strategy for the diagnosis, 
management and prevention of chronic obstructive pulmonary disease. 2017 Report. 
Available from http://goldcopd.org/gold-2017-global-strategy-diagnosis-management-
prevention-copd/(accessed on 31 July 2017)
Miller et al, 2005
Miller MR, Hankinson J, Brusasco V, Burgos F, Casaburi R, Coates A, et al. Standardisation 
of spirometry. Eur Respir J. 2005;26(2):319-38.

Clinical Study Protocol 
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
105 (122)
Wlodarczyk et al, 2008
Wlodarczyk JH, Gibson PG, Caeser M. Impact of inhaled corticosteroids on cortisol 
suppression in adults with asthma: a quantitative review. Ann Allergy Asthma Immunol. 
2008;100(1):23-30.

Clinical Study Protocol Appendix A
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
106 (122)
Appendix A
Estimated clinical comparability for low, medium, and high 
doses of inhaled corticosteroids
Drug
Daily dose (mcg)
Low
Medium
High
Beclometasone dipropionate (CFC)*
200-500
>500-1000
>1000
Beclometasone dipropionate (HFA)
100-200
>200-400
>400
Budesonide (DPI)
200-400
>400-800
>800
Ciclesonide (HFA)
80-160
>160-320
>320
Fluticasone furoate (DPI)
100
Not applicable
200
Fluticasone propionate (DPI)
100-250
>250-500
>500
Fluticasone propionate (HFA)
100-250
>250-500
>500
Mometasone furoate
110-210
>210-440
>440
Triamcinolone acetonide
400-1000
>1000-2000
>2000
CFC: Chlorofluorocarbon propellant; DPI: Dry powder inhaler; HFA: Hydrofluoroalkane propellant
*Beclometasone dipropionate (CFC) is included for comparison with old literature.
Source: Global Strategy for Asthma Management and Prevention. Updated 2018. Available from 
http://www.ginasthma.org/ (accessed on 24 March 2018).

Clinical Study Protocol Appendix B
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
107 (122)
Appendix B
Asthma Control Questionnaire-5

Clinical Study Protocol Appendix B
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
108 (122)

Clinical Study Protocol Appendix C
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
109 (122)
Appendix C
Asthma Symptom Score
Severity scores for asthma symptoms will be recorded daily during Run-in and Treatment 
Period.
Asthma symptom scores during night-time will be assessed by the patient each morning 
according to the following scoring system and recorded on the eDiary:
0
No asthma symptoms
1
You were aware of your asthma symptoms but you can easily tolerate the symptoms
2
Your asthma was causing you enough discomfort to cause problems with sleep
3
You were unable to sleep because of your asthma
Asthma symptom scores during the day-time will be assessed by the patient each evening 
according to the following scoring system and recorded on the eDiary:
0
No asthma symptoms
1
You were aware of your asthma symptoms but you can easily tolerate the symptoms
2
Your asthma was causing you enough discomfort to cause problems with normal activities 
3
You were unable to do your normal activities because of your asthma

Clinical Study Protocol Appendix D
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
110 (122)
Appendix D
Actions Required in Cases of Increases in Liver 
Biochemistry and Evaluation of Hy’s Law
1. Introduction
This Appendix describes the process to be followed in order to identify and appropriately 
report Potential Hy’s Law (PHL) cases and Hy’s Law (HL) cases. It is not intended to be a 
comprehensive guide to the management of elevated liver biochemistries.
During the course of the study the Investigator will remain vigilant for increases in liver 
biochemistry. The Investigator is responsible for determining whether a patient meets PHL 
criteria at any point during the study.
All sources of laboratory data are appropriate for the determination of PHL and HL events; 
this includes samples taken at scheduled study visits and other visits including central and all 
local laboratory evaluations even if collected outside of the study visits; for example, PHL 
criteria could be met by an elevated alanine aminotransferase (ALT) from a central laboratory 
and/or elevated total bilirubin (TBL) from a local laboratory.
The Investigator will also review adverse event (AE) data (for example, for AEs that may 
indicate elevations in liver biochemistry) for possible PHL events.
The Investigator participates, together with AstraZeneca clinical project representatives, in 
review and assessment of cases meeting PHL criteria to agree whether HL criteria are met. HL 
criteria are met if there is no alternative explanation for the elevations in liver biochemistry 
other than Drug-Induced Liver Injury (DILI) caused by the investigational product (IP).
The Investigator is responsible for recording data pertaining to PHL/HL cases and for 
reporting AEs and serious adverse events (SAEs) according to the outcome of the review and 
assessment in line with standard safety reporting processes.
2. Definitions
Potential Hy’s Law (PHL)
Aspartate aminotransferase (AST) or ALT ≥ 3× upper limit of normal (ULN) together with
TBL ≥ 2×ULN at any point during the study following the start of study medication
irrespective of an increase in alkaline phosphatase (ALP).
Hy’s Law (HL)
AST or ALT ≥ 3× ULN together with TBL ≥ 2×ULN, where no other reason, other than the 
IP, can be found to explain the combination of increases, eg, elevated ALP indicating 
cholestasis, viral hepatitis, another drug.
For PHL and HL the elevation in transaminases must precede or be coincident with (ie, on the 
same day) the elevation in TBL, but there is no specified timeframe within which the 
elevations in transaminases and TBL must occur.

Clinical Study Protocol Appendix D
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
111 (122)
3. Identification of Potential Hy’s Law Cases
In order to identify cases of PHL it is important to perform a comprehensive review of 
laboratory data for any patient who meets any of the following identification criteria in 
isolation or in combination:

ALT ≥3×ULN

AST ≥3×ULN

TBL ≥2×ULN
When a patient meets any of the PHL identification criteria, in isolation or in combination, the 
central laboratory will immediately send an alert to the Investigator (also sent to AstraZeneca 
representative).
The Investigator will also remain vigilant for any local laboratory reports where the PHL
identification criteria are met, where this is the case the Investigator will:

Notify the AstraZeneca representative

Request a repeat of the test (new blood draw) by the central laboratory without delay

Complete the appropriate unscheduled laboratory electronic Case Report Form (CRF)
module(s) with the original local laboratory test result
When the identification criteria are met from central or local laboratory results the Investigator 
will without delay:

Determine whether the patient meets PHL criteria (see Section 2 within this Appendix 
for definition) by reviewing laboratory reports from all previous visits (including both 
central and local laboratory results)
4. Follow-up
4.1 Potential Hy’s Law Criteria not met
If the patient does not meet PHL criteria the Investigator will:

Inform the AstraZeneca representative that the patient has not met PHL criteria

Perform follow-up on subsequent laboratory results according to the guidance provided 
in the Clinical Study Protocol
4.2 Potential Hy’s Law Criteria met
If the patient does meet PHL criteria the Investigator will:

Notify the AstraZeneca representative who will then inform the central Study Team. 

Clinical Study Protocol Appendix D
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
112 (122)

Within 1 day of PHL criteria being met, the Investigator will report the case as an SAE 
of Potential Hy’s Law; serious criteria ‘Important medical event’ and causality 
assessment ‘yes/related’ according to Clinical Study Protocol process for SAE reporting.

For patients that met PHL criteria prior to starting IP, the investigator is not required to 
submit a PHL SAE unless there is a significant change in the patient’s condition.
Note: A ‘significant’ change in the patient’s condition refers to a clinically relevant 
change in any of the individual liver biochemistry parameters (ALT, AST or TBL) in 
isolation or in combination, or a clinically relevant change in associated symptoms. The 
determination of whether there has been a significant change will be at the discretion of 
the Investigator, this may be in consultation with the Study Physician if there is any 
uncertainty.
The Study Physician contacts the Investigator, to provide guidance, discuss and agree an 
approach for the study patients’ follow-up (including any further laboratory testing) and the 
continuous review of data. Subsequent to this contact the Investigator will:

Monitor the patient until liver biochemistry parameters and appropriate clinical 
symptoms and signs return to normal or baseline levels, or as long as medically 
indicated. Completes follow-up SAE Form as required.

Investigate the aetiology of the event and perform diagnostic investigations as discussed 
with the Study Physician. This includes deciding which tests available in the Hy’s Law 
lab kit should be used. 

Complete the 3 Liver eCRF Modules as information becomes available.
5. Review and Assessment of Potential Hy’s Law Cases
The instructions in this Section should be followed for all cases where PHL criteria are met.
As soon as possible after the biochemistry abnormality was initially detected, the Study 
Physician contacts the Investigator in order to review available data and agree on whether 
there is an alternative explanation for meeting PHL criteria other than DILI caused by the IP, 
to ensure timely analysis and reporting to health authorities within 15 calendar days from date 
PHL criteria was met. The AstraZeneca Global Clinical Lead or equivalent and Global Safety 

Clinical Study Protocol Appendix D
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
113 (122)
Physician will also be involved in this review together with other subject matter experts as 
appropriate.
According to the outcome of the review and assessment, the Investigator will follow the 
instructions below.
Where there is an agreed alternative explanation for the ALT or AST and TBL elevations, 
a determination of whether the alternative explanation is an AE will be made and 
subsequently whether the AE meets the criteria for a SAE:

If the alternative explanation is not an AE, record the alternative explanation on the 
appropriate eCRF.

If the alternative explanation is an AE/SAE: update the previously submitted PHL SAE 
and AE eCRFs accordingly with the new information (reassessing event term; causality 
and seriousness criteria) following the AZ standard processes.
If it is agreed that there is no explanation that would explain the ALT or AST and TBL 
elevations other than the IP:

Send updated SAE (report term ‘Hy’s Law’) according to AstraZeneca standard 
processes.

The ‘Medically Important’ serious criterion should be used if no other serious 
criteria apply.

As there is no alternative explanation for the HL case, a causality assessment of 
‘related’ should be assigned.
If, there is an unavoidable delay of over 15 calendar days in obtaining the information 
necessary to assess whether or not the case meets the criteria for HL, then it is assumed that 
there is no alternative explanation until such time as an informed decision can be made:

Provides any further update to the previously submitted SAE of Potential Hy’s Law, 
(report term now ‘Hy’s Law case’) ensuring causality assessment is related to IP and 
seriousness criteria is medically important, according to Clinical Study Protocol process 
for SAE reporting.

Continue follow-up and review according to agreed plan. Once the necessary 
supplementary information is obtained, repeat the review and assessment to determine 
whether HL criteria are still met. Update the previously submitted PHL SAE report 
following Clinical Study Protocol process for SAE reporting, according to the outcome 
of the review and amending the reported term if an alternative explanation for the liver 
biochemistry elevations is determined.

Clinical Study Protocol Appendix D
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
114 (122)
References
FDA Guidance for Industry (issued July 2009) ‘Drug-induced liver injury: Premarketing 
clinical evaluation’.

Clinical Study Protocol Appendix E
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
115 (122)
Appendix E
Genomic Research
Rationale and Objectives
AstraZeneca intends to collect and store deoxyribonucleic acid (DNA) for genomic research 
to explore how genomic variations may affect clinical parameters, risk and prognosis of 
diseases, and the response to medications. Genomic research may lead to better understanding 
of diseases, better diagnosis of diseases or other improvements in health care and to the 
discovery of new diagnostics, treatments or medications.
In addition, collection of DNA samples from populations with well described clinical 
characteristics may lead to improvements in the design and interpretation of clinical trials and, 
possibly, to genetically guided treatment strategies.
Genomic Research Plan and Procedures
Selection of genomic research population
Study selection record
All patients will be asked to participate in this genomic research. Participation is voluntary 
and if a patient declines to participate there will be no penalty or loss of benefit. The patient 
will not be excluded from any aspect of the main study.
Inclusion criteria
For inclusion in this genomic research, patients must fulfil all of the inclusion criteria 
described in the main body of the Clinical Study Protocol and:

Provide informed consent for the genomic sampling and analyses.
Exclusion criteria
Exclusion from this genomic research may be for any of the exclusion criteria specified in the 
main study or any of the following:

Previous allogeneic bone marrow transplant

Non-leukocyte depleted whole blood transfusion in 120 days of genomic sample 
collection
Discontinuation of patients from this genomic research
Specific reasons for discontinuing a patient from this genomic research are:
Withdrawal of consent for genomic research: Patients may withdraw from this genomic
research at any time, independent of any decision concerning participation in other aspects of 
the main study. Voluntary discontinuation will not prejudice further treatment. Procedures for 
discontinuation are outlined in Section 7.5 of the main Clinical Study Protocol.

Clinical Study Protocol Appendix E
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
116 (122)
Collection of samples for genomic research
A blood sample for genomic research will be obtained from the patients at Visit 3. Although 
DNA is stable, early sample collection is preferred to avoid introducing bias through 
excluding patients who may withdraw due to an AE, such patients would be important to 
include in any genomic analysis. If for any reason the sample is not drawn at Visit 3, it may be 
taken at any visit until the last study visit. Only one sample should be collected per patient for 
genomics during the study. Samples will be collected, labelled, stored and shipped as detailed 
in the Laboratory Manual.
Coding and storage of DNA samples
The processes adopted for the coding and storage of samples for genetic analysis are 
important to maintain patient confidentiality. Samples will be stored for a maximum of 15 
years, from the date of last patient last visit, after which they will be destroyed. DNA is a 
finite resource that is used up during analyses. Samples will be stored and used until no further 
analyses are possible or the maximum storage time has been reached.
An additional second code will be assigned to the blood either before or at the time of DNA 
extraction replacing the information on the sample tube. Thereafter, the sample will be 
identifiable by the second, unique number only. This number is used to identify the sample 
and corresponding data at the AstraZeneca genomics laboratories, or at the designated 
organisation. No personal details identifying the individual will be available to any person 
(AstraZeneca employee or designated organisations working with the DNA).
The link between the patient enrolment/randomisation code and the second number will be 
maintained and stored in a secure environment, with restricted access at AstraZeneca or 
designated organisations. The link will be used to identify the relevant DNA samples for 
analysis, facilitate correlation of genotypic results with clinical data, allow regulatory audit 
and to trace samples for destruction in the case of withdrawal of consent.
Ethical and Regulatory Requirements
The principles for ethical and regulatory requirements for the study, including this genomics 
research component, are outlined in Section 8 of the main Clinical Study Protocol.
Informed consent
The genomic component of this study is optional and the patient may participate in other 
components of the main study without participating in the genomic component. To participate 
in the genomic component of the study the patient must sign and date both the consent form 
for the main study and the genomic component of the study. Copies of both signed and dated 
consent forms must be given to the patient and the original filed at the study centre. The PI is 
responsible for ensuring that consent is given freely and that the patient understands that they 
may freely discontinue from the genomic aspect of the study at any time.

Clinical Study Protocol Appendix E
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
117 (122)
Patient data protection
AstraZeneca will not provide individual genotype results to patients, any insurance company, 
any employer, their family members, general physician unless required to do so by law.
Extra precautions are taken to preserve confidentiality and prevent genomic data being linked 
to the identity of the patient. In exceptional circumstances, however, certain individuals might 
see both the genomic data and the personal identifiers of a patient. For example, in the case of 
a medical emergency, an AstraZeneca Physician or an Investigator might know a patient’s 
identity and also have access to his or her genomic data. Also Regulatory Authorities may 
require access to the relevant files, though the patient’s medical information and the genomic
files would remain physically separate.
Data management
Any genotype data generated in this study will be stored at a secure system at AstraZeneca 
and/or designated organisations to analyse the samples.
The results from this genomic research may be reported in a separate report from the CSR or 
published in scientific journals.
AstraZeneca and its designated organisations may share summary results (such as genomic
differences from groups of individuals with a disease) from this genomic research with other 
researchers, such as Hospitals, Academic Organisation or Health Insurance Companies. This 
can be done by placing the results in scientific databases, where they can be combined with 
the results of similar studies to learn even more about health and disease. The researchers can 
only use this information for health related research purposes. Researchers may see summary 
results but they will not be able to see individual patient data or any personal identifiers.
Some or all of the clinical datasets from the main study may be merged with the genomic data 
in a suitable secure environment separate from the clinical database.
Statistical Methods and Determination of Sample Size
The number of patients that will agree to participate in the genomic research is unknown. It is 
therefore not possible to establish whether sufficient data will be collected to allow a formal 
statistical evaluation or whether only descriptive statistics will be generated. A SAP will be 
prepared where appropriate.

Clinical Study Protocol Appendix F
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
118 (122)
Appendix F
International Airline Transportation Association (IATA) 6.2 
Guidance Document
Labelling and shipment of biohazard samples
International Airline Transportation Association (IATA) classifies biohazardous agents into 
3 categories. For transport purposes the classification of infectious substances according to 
risk groups was removed from the Dangerous Goods Regulations in the 46th edition (2005).
Infectious substances are now classified either as Category A, Category B or Exempt. There is 
no direct relationship between risk groups and categories A and B.
Category A Infectious Substances are infectious substances in a form that, when exposure to 
it occurs, is capable of causing permanent disability, life-threatening or fatal disease in 
otherwise healthy humans or animals. Category A pathogens are eg, Ebola, Lassa fever virus:

are to be packed and shipped in accordance with IATA Instruction 602.
Category B Infectious Substances are infectious Substances that do not meet the criteria for 
inclusion in Category A. Category B pathogens are eg, Hepatitis A, B, C, D, and E viruses, 
HIV types 1 and 2. They are assigned the following UN number and proper shipping name:

UN 3373 – Biological Substance, Category B

are to be packed in accordance with UN3373 and IATA 650
Exempt - all other materials with minimal risk of containing pathogens

Clinical trial samples will fall into Category B or exempt under IATA regulations

Clinical trial samples will routinely be packed and transported at ambient temperature in 
IATA 650 compliant packaging 

Biological samples transported in dry ice require additional dangerous goods 
specification for the dry ice content

IATA compliant courier and packaging materials should be used for packing and 
transportation and packing should be done by an IATA certified person, as applicable

Samples routinely transported by road or rail are patient to local regulations which 
require that they are also packed and transported in a safe and appropriate way to contain 
any risk of infection or contamination by using approved couriers and packaging / 
containment materials at all times. The IATA 650 biological sample containment 
standards are encouraged wherever possible when road or rail transport is used.

Clinical Study Protocol Appendix G
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
119 (122)
Appendix G
Additional Safety Information
Further Guidance on the Definition of a Serious Adverse Event (SAE)
Life threatening
‘Life-threatening’ means that the patient was at immediate risk of death from the AE as it 
occurred or it is suspected that use or continued use of the product would result in the patient’s 
death. ‘Life-threatening’ does not mean that had an AE occurred in a more severe form it 
might have caused death (eg, hepatitis that resolved without hepatic failure).
Hospitalisation
Outpatient treatment in an emergency room is not in itself a serious AE, although the reasons 
for it may be (eg, bronchospasm, laryngeal oedema). Hospital admissions and/or surgical 
operations planned before or during a study are not considered AEs if the illness or disease 
existed before the patient was enrolled in the study, provided that it did not deteriorate in an 
unexpected way during the study.
Important medical event or medical intervention
Medical and scientific judgement should be exercised in deciding whether a case is serious in 
situations where important medical events may not be immediately life threatening or result in 
death, hospitalisation, disability or incapacity but may jeopardize the patient or may require 
medical intervention to prevent one or more outcomes listed in the definition of serious. These 
should usually be considered as serious.
Simply stopping the suspect drug does not mean that it is an important medical event; medical 
judgement must be used.

Angioedema not severe enough to require intubation but requiring iv hydrocortisone 
treatment

Hepatotoxicity caused by paracetamol (acetaminophen) overdose requiring treatment 
with N-acetylcysteine

Intensive treatment in an emergency room or at home for allergic bronchospasm

Blood dyscrasias (eg, neutropenia or anaemia requiring blood transfusion, etc.) or 
convulsions that do not result in hospitalisation
Development of drug dependency or drug abuse
A Guide to Interpreting the Causality Question
When making an assessment of causality consider the following factors when deciding if there 
is a ‘reasonable possibility’ that an AE may have been caused by the drug.

Clinical Study Protocol Appendix G
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
120 (122)

Time Course. Exposure to suspect drug. Has the patient actually received the suspect 
drug? Did the AE occur in a reasonable temporal relationship to the administration of the 
suspect drug?

Consistency with known drug profile. Was the AE consistent with the previous 
knowledge of the suspect drug (pharmacology and toxicology) or drugs of the same 
pharmacological class? Or could the AE be anticipated from its pharmacological 
properties?

De-challenge experience. Did the AE resolve or improve on stopping or reducing the 
dose of the suspect drug?

No alternative cause. The AE cannot be reasonably explained by another aetiology such 
as the underlying disease, other drugs, other host or environmental factors.

Re-challenge experience. Did the AE reoccur if the suspected drug was reintroduced 
after having been stopped? AstraZeneca would not normally recommend or support a re-
challenge.

Laboratory tests. A specific laboratory investigation (if performed) has confirmed the
relationship.
In difficult cases, other factors could be considered such as:

Is this a recognised feature of overdose of the drug?

Is there a known mechanism?
Causality of ‘related’ is made if following a review of the relevant data, there is evidence for a 
‘reasonable possibility’ of a causal relationship for the individual case. The expression 
‘reasonable possibility’ of a causal relationship is meant to convey, in general, that there are 
facts (evidence) or arguments to suggest a causal relationship.
The causality assessment is performed based on the available data including enough information 
to make an informed judgement. With limited or insufficient information in the case, it is likely 
that the event(s) will be assessed as ‘not related’.
Causal relationship in cases where the disease under study has deteriorated due to lack of effect 
should be classified as no reasonable possibility.

Clinical Study Protocol Appendix H
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
121 (122)
Appendix H
Classification of In Vivo Inhibitors of CYP3A4 Enzymes
Examples of CYP enzyme inhibitors
CYP 
enzyme
Strong inhibitors
Moderate 
inhibitors
Weak inhibitors
CYP3A
Boceprevir, cobicistat, conivaptan, 
danoprevir and ritonavir, elvitegravir 
and ritonavir, grapefruit juice, 
indinavir and ritonavir, itraconazole, 
ketoconazole, lopinavir and ritonavir, 
paritaprevir and ritonavir and 
(ombitasvir and/or dasabuvir), 
posaconazole, ritonavir, saquinavir and 
ritonavir, telaprevir, tipranavir and 
ritonavir, troleandomycin, 
voriconazole
Aprepitant, 
cimetidine,
ciprofloxacin, 
clotrimazole, 
crizotinib, 
cyclosporine, 
dronedarone, 
erythromycin, 
fluconazole, 
fluvoxamine, 
imatinib, 
tofisopam, 
verapamil
Chlorzoxazone, 
cilostazol, 
fosaprepitant, 
istradefylline, ivacaftor, 
lomitapide, ranitidine, 
ranolazine, tacrolimus,
ticagrelor
CYP, cytochrome P450
Note: Strong, moderate, and weak inhibitors are drugs that increase the AUC of sensitive index substrates of a 
given metabolic pathway ≥5-fold, ≥2 to <5-fold, and ≥1.25 to <2-fold, respectively.
Please note the following: This is not an exhaustive list. For an updated list, see the following 
link: 
https://www.fda.gov/drugs/developmentapprovalprocess/developmentresources/drugi
nteractionslabeling/ucm080499.htm (accessed on 20 July 2017).

Clinical Study Protocol Appendix I
Drug Substance AZD7594
Study Code D3741C00007
Version 2.0
Date 26 April 2019
122 (122)
Appendix I
Signatures
Not applicable.

SIGNATURE PAGE
This is a representation of an electronic record that was signed
electronically and this page is the manifestation of the electronic signature
Document Name: d3741c00007-csp-v2
Document Title:
D3741C00007 Clinical Study Protocol version 2
Version Label:
3.0 CURRENT LATEST APPROVED
Server Date
(dd-MMM-yyyy HH:mm ‘UTC’Z)
Signed by
Meaning of Signature
Author Approval
Content Approval
Author Approval
Notes: (1) Document details as stored in ANGEL, an AstraZeneca document management system.
PPD
PPD
PPD
CCI
CCI
CCI
CCI
CCI