Clinical trial NCT04532918
Conditions: Chronic Kidney Disease
Keywords: Pharmacokinetics Cyclosporine Rifampicin Drug-Drug interaction Organic anion transporting polypeptide (OATP1B) 1
Sponsor: AstraZeneca
Start date: 2020-09-10; Completion date: 2020-11-23
Enrollment: 14 participants; Allocation: NON_RANDOMIZED; Intervention model: CROSSOVER

Brief summary:
This Phase 1 study aims to quantify the effects of cyclosporine, a broad transporter inhibitor, and rifampicin, an OATP1B1/3 inhibitor, on verinurad pharmacokinetics (PK). The study is conducted in accordance with Food and Drug Administration guidance on Clinical Drug Interaction Studies, 2020. Verinurad will be developed as a fixed combination since it will always be administered together with allopurinol.

Detailed description:
This Phase 1 study will be an open-label, 3-period, 3-treatment, fixed-sequence study in healthy subjects (males and females of non-childbearing potential), performed at a single Clinical Unit.

The study will comprise of the following periods (visits):

* A Screening Period (Visit 1);
* A fixed sequence of 3 Treatment Periods during which subjects will be resident at the Clinical Unit from one day prior to administration of verinurad+allopurinol (Day -1) of Treatment Period 1 until the morning of Day 5 of the Treatment Period 2, and similarly for Treatment Period 3. There will be a washout period between Treatment Periods 2 and 3 dosing. The 3 Treatment Periods, include the washout period (Visits 2 to 3);
* A Follow-up Visit, after the last administration of verinurad+allopurinol (Visit 4).

Arms: arm 1: The subjects will receive single oral dose of verinurad 7.5 mg and allopurinol 300 mg under fasted condition. arm 2: The subjects will receive single oral dose of verinurad 7.5 mg, allopurinol 300 mg and cyclosporine 600 mg under fasted condition. arm 3: The subjects will receive single oral dose of verinurad 7.5 mg, allopurinol 300 mg and rifampicin 600 mg under fasted condition.
Interventions: intervention 1: Verinurad intervention 2: Allopurinol intervention 3: Cyclosporine intervention 4: Rifampicin
Intervention descriptions: intervention 1: The subjects will receive single oral dose of extended release capsule verinurad 7.5 mg on Day 1 of each treatment period under fasted condition. intervention 2: The subjects will receive single oral dose of tablet allopurinol 300 mg on Day 1 of each treatment period under fasted condition. intervention 3: The subjects will receive single oral dose of soft capsule cyclosporine 600 mg on Day 1 of treatment period 2 under fasted condition. intervention 4: The subjects will receive single oral dose of film coated tablets rifampicin 600 mg on Day 1 of treatment period 3 under fasted condition.

Protocol documents:
Prot_SAP_000.pdf: 
 
 
 
 
 
 
 
 
 
 
 
 
 An Open-label, 3-Treatment, 3-Period, Fixed Sequence Study in Healthy Subjects to 
Assess the Pharmacokinetics of Verinurad and Allopurinol when Administered Alone, and 
in Combination with Single Doses of Cyclosporine or Rifampicin 
 
ClinicalTrials.gov Identifier: NCT04532918 
 
 
Date of Protocol: 19 May 2020 


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Clinical Study Protocol 
An Open-label, 3-Treatment, 3-Period, Fixed Sequence Study in 
Healthy Subjects to Assess the Pharmacokinetics of Verinurad and 
Allopurinol when Administered Alone, and in Combination with 
Single Doses of Cyclosporine or Rifampicin 
Parexel Study No.: 
 
Sponsor Study Code: 
D5495C00013 
Eudra CT No: 
2020-000937-42 
Study Type: 
Drug-drug interaction (DDI) study 
Test Product: 
Verinurad, Allopurinol 
Interaction Products: 
Cyclosporine and Rifampicin 
Therapeutic Indication: 
Chronic kidney disease 
Pharmacological Class: 
URAT1 transporter inhibitor and xanthine oxidoreductase 
inhibitor 
Development Phase: 
Phase 1 
Sponsor: 
AstraZeneca AB 
151 85 Södertälje 
Sweden 
Study Centre: 
Parexel International GmbH 
,  
 
 
14050 Berlin 
Germany 
Date of Protocol: 
Final 1.0, 19 May 2020 
This clinical study will be conducted according to the protocol and in compliance with Good Clinical 
Practice, with the Declaration of Helsinki (Version 1996) and with other applicable regulatory 
requirements. 
Confidentiality Statement 
This confidential document is the property of AstraZeneca. No unpublished information contained 
herein may be disclosed without prior written approval from AstraZeneca. Access to this document 
must be restricted to relevant parties. 
CCI
CCI
CCI
CCI


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PROTOCOL SYNOPSIS 
 
Title of the Study 
An Open-label, 3-Treatment, 3-Period, Fixed Sequence Study in Healthy Subjects to Assess 
the Pharmacokinetics of Verinurad and Allopurinol when Administered Alone, and in 
Combination with Single Doses of Cyclosporine or Rifampicin 
 
Principal Investigator (PI) 
Thomas Kӧrnicke, MD 
 
Study Centre 
This study will be conducted at a single centre. 
 
Study Rationale 
Verinurad exposure has been hypothesized, based on in vitro data, to increase if 
co-administered with compounds that inhibit transporters, such as OATP1B1 and OATP1B3, 
involved in the disposition of verinurad. The proposed study aims to quantify the effects of 
cyclosporine, a broad transporter inhibitor, and rifampicin, an OATP1B1/3 inhibitor, on 
verinurad PK (FDA Guidance on Clinical Drug Interaction Studies, 2020). 
 
Number of Subjects Planned 
A total of 14 healthy subjects will be enrolled to ensure at least 12 evaluable subjects at the 
end of the last treatment period. 
 
Study Period 
Estimated date of first subject enrolled:  
July 2020 (signing of informed consent) 
Estimated date of last subject completed: 
September 2020 
 
Study Objectives 
The objectives of the study are: 
Primary Objectives: 
• 
To assess the effect of a single dose of cyclosporine on the PK of verinurad. 
• 
To assess the effect of a single dose of rifampicin on the PK of verinurad. 
Secondary Objectives: 
• 
To assess the effect of a single dose of cyclosporine or rifampicin on the PK of verinurad 
metabolites M1 and M8. 
• 
To assess the effect of a single dose of cyclosporine or rifampicin on the PK of 
allopurinol and oxypurinol. 
• 
To describe the PK parameters and the PK profiles for verinurad, M1, M8, allopurinol 
and oxypurinol when verinurad+allopurinol is administered alone or in combination with 
cyclosporine or rifampicin. 
• 
To assess the safety and tolerability of verinurad and allopurinol in combination with a 
single dose of cyclosporine or rifampicin. 


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Exploratory Objective: 
• 
To collect and store samples for potential future measurement of cyclosporine and/or 
rifampicin plasma levels. 
• 
To collect blood and urine samples for additional clinical chemistry and urinalysis. 
 
Study Design 
This study will be an open-label, 3-period, 3-treatment, fixed-sequence study in healthy 
subjects (males and females of non-childbearing potential), performed at a single Clinical 
Unit. 
The study will comprise of the following periods (visits): 
• 
A Screening Period of maximum 28 days (Visit 1); 
• 
A fixed sequence of 3 Treatment Periods during which subjects will be resident at the 
Clinical Unit from one day prior to administration of verinurad+allopurinol (Day -1) of 
Treatment Period 1 until the morning of Day 5 of the Treatment Period 2, and similarly 
between Day -1 to Day 5 of Treatment Period 3. There will be a washout period of 14 
days between Treatment Periods 2 and 3 dosing. The 3 Treatment Periods, including the 
washout period, will be a total of up to 36 days (Visits 2 and 3); 
• 
A Follow-up Visit within 7 to 14 days after the last administration of 
verinurad+allopurinol (Visit 4). 
 
Subjects will be resident at the Clinical Unit from Day -1 of Treatment Period 1 (Visit 2), ie, 
prior to the evening meal the night before first dosing with verinurad+allopurinol, until the 
morning of Day 5 of Treatment Period 2, ie, at least 96 hours after the second dosing with 
verinurad+allopurinol. There will be no washout between Treatment Period 1 and Treatment 
Period 2. Subjects will be resident continuously for the full duration of Treatment Periods 1 
and 2. There will be a minimum washout period of 14 days between dosing in Treatment 
Period 2 and dosing in Treatment Period 3. Subjects will not be required to be resident at the 
Clinical Unit for around 10 days during the washout period. Subjects will be resident again 
from Day -1 of Treatment Period 3 (Visit 3), ie, prior to the evening meal the night before 
third (last) dosing with verinurad+allopurinol, until the morning of Day 5 of Treatment Period 
3, ie, at least 96 hours after the last dosing with verinurad+allopurinol. The subjects will return 
for a Follow-up Visit in 7-14 days after the last verinurad+allopurinol dose. 
Each subject will receive a single dose of verinurad+allopurinol on 3 occasions, under fasted 
conditions. Each subject will also receive a single dose of cyclosporine on 1 occasion and a 
single dose of rifampicin on 1 occasion, with cyclosporine and rifampicin being dosed on 
separate occasions and always together with verinurad+allopurinol. 
Expected Duration of the Study 
Each subject will be involved in the study for approximately 9 weeks and have 4 study visits. 


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Targeted Study Population 
This study will be conducted in healthy males and females of non-childbearing potential, 18 to 
55 years of age (inclusive). 
 
Investigational Medicinal Product 
Investigational 
Medicinal Product 
Name 
Verinurad 
Allopurinol 
Cyclosporine 
Rifampicin 
Trade Names: 
Verinurad 
Allopurinol 
Sandimmun Optoral 
Eremfat 
Manufacturer:  
AstraZeneca 
Teva 
Pharmaceutical 
Novartis Pharma 
GmbH 
RIEMSER 
Pharma GmbH 
Formulation: 
Capsule 
Tablet 
Soft Capsule 
Film coated 
Tablets 
Strength/concentration: 
7.5 mg 
300 mg 
100 mg 
600 mg 
Dose: 
7.5 mg 
300 mg 
600 mg 
600 mg 
Route of 
administration: 
Oral  
Oral  
Oral  
Oral  
Specific device for 
drug administration, if 
applicable: 
Not applicable 
Not applicable 
Not applicable 
Not applicable 
Regimen: 
Single dose of 
7.5 mg 
Single dose of 
300 mg 
Single dose of 
600 mg 
Single dose of 
600 mg 
Special handling 
requirements: 
Not applicable 
Not applicable 
Not applicable 
Not applicable 
 
Outcome Endpoints 
The primary outcome measures are: 
• Verinurad Cmax, AUCinf and AUClast ratios of geometric means of test treatment 
(verinurad+allopurinol with cyclosporine), relative to reference treatment 
(verinurad+allopurinol alone). 
• Verinurad Cmax, AUCinf and AUClast ratios of geometric means of test treatment 
(verinurad+allopurinol with rifampicin), relative to reference treatment 
(verinurad+allopurinol alone). 
 
The secondary outcome measures are: 
• M1 and M8 Cmax, AUCinf and AUClast ratios of geometric means of test treatment 
(verinurad+allopurinol with cyclosporine), relative to reference treatment 
(verinurad+allopurinol alone). 
• M1 and M8 Cmax, AUCinf and AUClast ratios of geometric means of test treatment 
(verinurad+allopurinol with rifampicin), relative to reference treatment 
(verinurad+allopurinol alone). 
• Allopurinol and oxypurinol Cmax, AUCinf and AUClast ratios of geometric means of 
test treatment (verinurad+allopurinol with cyclosporine), relative to reference 
treatment (verinurad+allopurinol alone). 


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• Allopurinol and oxypurinol Cmax, AUCinf and AUClast ratios of geometric means of 
test treatment (verinurad+allopurinol with rifampicin), relative to reference treatment 
(verinurad+allopurinol alone). 
• Where possible the following PK parameters of verinurad, M1, M8, allopurinol and 
oxypurinol will be assessed: Cmax, AUCinf, AUClast, AUC(0-24), tmax, t½λz, λz, 
CL/F (parent only), MRTinf (parent only), Vss/F (parent only), Vz/F (parent only) and 
metabolite:parent (MP) ratios of M1 and M8: verinurad for Cmax, AUCinf and 
AUClast. Plasma concentration time profile for each analyte. 
• Incidence of AEs, 12-lead ECGs, vital signs, physical examination, and clinical 
laboratory assessment. 
 
Statistical Methods 
Presentation and Analysis of Safety Data: 
All safety data (scheduled and unscheduled) will be presented in the data listings. Continuous 
variables will be summarised using descriptive statistics (n, mean, SD, minimum, median, 
maximum) by treatment. Categorical variables will be summarised in frequency tables 
(frequency and proportion) by treatment. The analysis of the safety variables will be based on 
the safety analysis set. 
Adverse events will be summarised by PT and SOC using MedDRA vocabulary. Furthermore, 
listings of SAEs and adverse events that led to withdrawal will be made and the number of 
subjects who had any AE, SAEs, AEs that led to withdrawal, and AEs with severe intensity 
will be summarised. Adverse events that occur before dosing will be reported separately. 
Tabulations and listings of data for vital signs, clinical laboratory tests and ECGs (listings 
only) will be presented. Any new or aggravated clinically relevant abnormal medical physical 
examination finding compared to the baseline assessment will be reported as an AE. Data will 
be summarised for the observed values at each scheduled assessment, together with the 
corresponding changes from the baseline when baseline is defined. 
 
Inferential Analysis of Pharmacokinetic Data: 
The pharmacokinetic parameters (Cmax, AUCinf and AUClast) of verinurad, M1, M8, 
allopurinol and oxypurinol will be analysed using an analysis of variance model following a 
natural logarithmic transformation, with fixed effects for treatment and subject. Least-squares 
geometric means, 2-sided 95% confidence intervals, ratios of geometric means together with 
2-sided 90% confidence intervals of test treatment (verinurad+allopurinol+cyclosporine or 
verinurad+allopurinol+rifampicin), and reference treatment (verinurad+allopurinol) will be 
estimated and presented. Descriptive statistics will be presented for PK concentration-time 
data and PK parameters for verinurad, M1, M8, allopurinol and oxypurinol. 
 
Presentation and Analysis of Exploratory Data: 
Results from exploratory data will not form part of the CSR and will not be included in the 
tables, figures or listings of this study. 
 
Sample Size Determination 
The number of subjects is based on the desire to gain adequate information on the primary 
endpoints while exposing as few subjects as possible to study procedures. Interpretation of the 
results will be based on the size of the treatment ratio and associated 90% CI. It is estimated 


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that 12 subjects will provide a CI within 1.58 to 2.53 with a probability of 80% if the 
calculated treatment ratio is 2. This is based on an intra-subject CV of 24% for verinurad. 


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TABLE OF CONTENTS 
PROTOCOL SYNOPSIS .......................................................................................................... 2 
TABLE OF CONTENTS .......................................................................................................... 7 
List of Tables ........................................................................................................................... 11 
List of Figures .......................................................................................................................... 11 
List of Appendices ................................................................................................................... 11 
LIST OF ABBREVIATIONS AND DEFINITION OF TERMS ............................................ 12 
INVESTIGATORS AND STUDY ADMINISTRATIVE STRUCTURE .............................. 16 
1. 
INTRODUCTION ................................................................................................ 19 
1.1. 
Background ........................................................................................................... 19 
1.1.1. 
Description of Verinurad ...................................................................................... 19 
1.1.1.1. 
Clinical Pharmacokinetics .................................................................................... 19 
1.2. 
Background to COVID-19 .................................................................................... 20 
1.3. 
Rationale for Conducting this Study .................................................................... 20 
2. 
STUDY OBJECTIVES ........................................................................................ 22 
2.1. 
Primary Objectives ............................................................................................... 22 
2.2. 
Secondary Objectives ........................................................................................... 22 
2.3. 
Exploratory Objective ........................................................................................... 23 
3. 
STUDY DESIGN ................................................................................................. 23 
3.1. 
Overall Study Design and Flow Chart .................................................................. 23 
3.1.1. 
Order of Assessments ........................................................................................... 29 
3.1.2. 
End of Study ......................................................................................................... 29 
3.1.3. 
Expected Duration of the Study ............................................................................ 29 
3.2. 
Rationales for Study Design and Dose Selection ................................................. 29 
3.2.1. 
Rationale for Study Design ................................................................................... 29 
3.2.2. 
Dose Rationale ...................................................................................................... 30 
3.3. 
Risk-benefit Assessment ....................................................................................... 30 
3.3.1. 
Adverse Events, Contraindications and Warnings of Verinurad .......................... 31 
3.3.2. 
Allopurinol ............................................................................................................ 33 
3.3.3. 
Cyclosporine ......................................................................................................... 33 
3.3.4. 
Rifampicin ............................................................................................................ 34 
3.3.5. 
Risk Assessment for COVID-19 Pandemic .......................................................... 34 
4. 
STUDY POPULATION ....................................................................................... 36 
4.1. 
Selection of Study Population .............................................................................. 36 
4.1.1. 
Inclusion Criteria .................................................................................................. 36 
4.1.2. 
Exclusion Criteria ................................................................................................. 36 
4.2. 
Restrictions During the Study ............................................................................... 39 
4.2.1. 
Reproductive Restrictions ..................................................................................... 40 
4.2.1.1. 
Women of Non-Childbearing Potential ................................................................ 40 


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4.2.1.2. 
Male Subjects........................................................................................................ 41 
4.3. 
Replacement of Subjects....................................................................................... 42 
5. 
STUDY CONDUCT ............................................................................................. 42 
5.1. 
Subject Enrolment and Randomisation ................................................................ 42 
5.2. 
Procedures for Handling Incorrectly Enrolled Subjects ....................................... 43 
5.3. 
Blinding ................................................................................................................ 43 
5.4. 
TREATMENTS .................................................................................................... 43 
5.4.1. 
Identity of the Investigational Medicinal Product ................................................ 43 
5.4.2. 
Supply of Investigational Medicinal Product ....................................................... 44 
5.4.3. 
Dose and Treatment Regimens ............................................................................. 44 
5.4.4. 
Labelling ............................................................................................................... 45 
5.4.5. 
Storage and Handling Procedures ......................................................................... 46 
5.5. 
Concomitant and Post-study Treatment(s) ........................................................... 46 
5.6. 
Treatment Compliance.......................................................................................... 46 
5.6.1. 
Drug Accountability, Dispensing and Destruction ............................................... 46 
5.7. 
Discontinuation of Investigational Product and Withdrawal from Study ............ 47 
5.7.1. 
Procedures for Withdrawal of a Subject from the Study ...................................... 47 
5.8. 
Premature Termination of the Study..................................................................... 47 
6. 
COLLECTION OF STUDY VARIABLES ......................................................... 49 
6.1. 
Recording of Data ................................................................................................. 49 
6.2. 
Enrolment and Screening Procedures ................................................................... 49 
6.3. 
Safety and Eligibility Measurements .................................................................... 49 
6.3.1. 
Adverse Events ..................................................................................................... 49 
6.3.1.1. 
Definition of Adverse Events ............................................................................... 49 
6.3.1.2. 
Definitions of Serious Adverse Event .................................................................. 50 
6.3.1.3. 
Other Significant Adverse Events ........................................................................ 50 
6.3.1.4. 
Recording of Adverse Events ............................................................................... 51 
6.3.1.5. 
Reporting of Serious Adverse Events ................................................................... 53 
6.3.1.6. 
Regulatory Reporting Requirements for SAEs..................................................... 54 
6.3.2. 
Laboratory Assessments ....................................................................................... 54 
6.3.2.1. 
Haematology ......................................................................................................... 54 
6.3.2.2. 
Serum Clinical Chemistry..................................................................................... 55 
6.3.2.3. 
Genotyping ........................................................................................................... 55 
6.3.2.4. 
Urinalysis .............................................................................................................. 55 
6.3.2.5. 
Viral Serology ....................................................................................................... 55 
6.3.2.6. 
SARS-CoV-2 Serology ......................................................................................... 56 
6.3.2.7. 
Drugs of Abuse, Alcohol and Cotinine................................................................. 56 
6.3.3. 
Physical Examination ........................................................................................... 56 
6.3.4. 
Electrocardiograms ............................................................................................... 56 
6.3.4.1. 
Resting 12-lead Electrocardiogram ...................................................................... 56 
6.3.5. 
Vital Signs ............................................................................................................ 57 
6.4. 
Pharmacokinetics .................................................................................................. 57 
6.4.1. 
Collection of Pharmacokinetic Samples ............................................................... 57 


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6.4.1.1. 
Whole Blood Samples .......................................................................................... 57 
6.4.2. 
Pharmacokinetic Drug Assays .............................................................................. 57 
6.5. 
Pharmacodynamics ............................................................................................... 58 
6.6. 
Pharmacogenetics ................................................................................................. 58 
6.7. 
Biomarkers ............................................................................................................ 58 
6.8. 
Immunogenicity .................................................................................................... 58 
6.9. 
Metabolites ........................................................................................................... 58 
7. 
BIOLOGICAL SAMPLES PROCEDURES ........................................................ 58 
7.1. 
Total Blood Volume ............................................................................................. 58 
7.2. 
Handling, Storage and Destruction of Biological Samples .................................. 59 
7.2.1. 
Pharmacokinetic Samples ..................................................................................... 59 
7.2.2. 
Pharmacodynamic Samples – Not Applicable ..................................................... 59 
7.2.3. 
Pharmacogenetic Samples – Not Applicable ........................................................ 59 
7.3. 
Labeling and Shipment of Biohazard Samples ..................................................... 59 
7.4. 
Chain of Custody of Biological Samples.............................................................. 60 
7.5. 
Withdrawal of Informed Consent for Donated Biological Samples ..................... 60 
8. 
ETHICAL AND REGULATORY REQUIREMENTS ....................................... 61 
8.1. 
Ethical Conduct of the Study ................................................................................ 61 
8.2. 
Subject Data Protection ........................................................................................ 61 
8.3. 
Ethics and Regulatory Review.............................................................................. 61 
8.4. 
Insurance ............................................................................................................... 62 
8.5. 
Informed Consent ................................................................................................. 62 
8.6. 
Changes to the Protocol and Informed Consent Form.......................................... 62 
9. 
DATA QUALITY ASSURANCE AND DATA MANAGEMENT .................... 63 
9.1. 
Quality Control and Source Data Verification ..................................................... 63 
9.2. 
Audit/Inspections .................................................................................................. 63 
9.3. 
Study Monitoring .................................................................................................. 63 
9.4. 
Data Collection ..................................................................................................... 63 
9.4.1. 
Case Report Forms and Source Documents ......................................................... 64 
9.4.2. 
Access to Source Documents................................................................................ 64 
9.5. 
Data Management ................................................................................................. 64 
10. 
EVALUATION AND CALCULATION OF VARIABLES ................................ 66 
10.1. 
Safety Variables .................................................................................................... 66 
10.1.1. 
Adverse Events ..................................................................................................... 66 
10.1.2. 
Laboratory Assessments ....................................................................................... 67 
10.1.3. 
Physical Examination and Body Weight .............................................................. 68 
10.1.4. 
Resting 12-lead Electrocardiogram ...................................................................... 68 
10.1.5. 
Vital Signs ............................................................................................................ 68 
10.2. 
Pharmacokinetic Variables ................................................................................... 68 
10.2.1. 
Plasma Parameters ................................................................................................ 69 


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10.2.2. 
Calculation or Derivation of Pharmacokinetic Parameters .................................. 70 
10.3. 
Pharmacodynamic variable(s) – Not Applicable .................................................. 70 
10.4. 
Pharmacogenetics – Not Applicable ..................................................................... 70 
11. 
STATISTICAL METHODS AND SAMPLE SIZE DETERMINATION ........... 71 
11.1. 
Description of the Analysis Sets ........................................................................... 71 
11.1.1. 
Enrolled Set .......................................................................................................... 71 
11.1.2. 
Safety Analysis Set ............................................................................................... 71 
11.1.3. 
Pharmacokinetic Analysis Set .............................................................................. 71 
11.2. 
Methods of Statistical Analyses............................................................................ 72 
11.2.1. 
General Principles ................................................................................................. 72 
11.2.2. 
Missing Data ......................................................................................................... 73 
11.2.3. 
Subject Characteristics.......................................................................................... 73 
11.2.3.1. 
Demographic and Baseline Data .......................................................................... 73 
11.2.4. 
Prior and Concomitant Medication and Drug Administration ............................. 74 
11.2.4.1. 
Prior and Concomitant Medication ....................................................................... 74 
11.2.4.2. 
Drug Administration ............................................................................................. 74 
11.2.5. 
Safety and Tolerability ......................................................................................... 74 
11.2.6. 
Presentation of Pharmacokinetic Data .................................................................. 75 
11.2.7. 
Inferential Analysis of Pharmacokinetic Data ...................................................... 76 
11.2.8. 
Pharmacodynamics – Not Applicable .................................................................. 76 
11.2.9. 
Pharmacogenetics – Not Applicable ..................................................................... 76 
11.2.10. 
Exploratory Data ................................................................................................... 76 
11.3. 
Protocol Deviations .............................................................................................. 76 
11.4. 
Determination of Sample Size .............................................................................. 77 
12. 
IMPORTANT MEDICAL PROCEDURES TO BE FOLLOWED BY THE 
INVESTIGATOR ................................................................................................. 78 
12.1. 
Medical emergencies and AstraZeneca contacts .................................................. 78 
12.2. 
Pregnancy ............................................................................................................. 78 
12.2.1. 
Paternal exposure .................................................................................................. 78 
13. 
LEGAL AND ADMINISTRATIVE ASPECTS .................................................. 80 
13.1. 
Archiving of Study Documents ............................................................................ 80 
13.2. 
Publication of Study Results ................................................................................. 80 
13.3. 
Clinical Study Report ........................................................................................... 80 
14. 
REFERENCE LIST .............................................................................................. 81 
15. 
APPENDICES ...................................................................................................... 83 
 
 
 


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List of Tables 
Table 2-1 
Primary Objectives and Outcome Measures ............................................... 22 
Table 2-2 
Secondary Objectives and Outcome Measures ........................................... 22 
Table 2-3 
Exploratory Objective and Outcome Measures .......................................... 23 
Table 3-1 
Schedule of Assessments ............................................................................ 25 
Table 5-1 
Identity of the Investigational Medicinal Product ....................................... 44 
Table 5-2 
IMP in each Treatment Period .................................................................... 45 
Table 7-1 
Total Blood Volume .................................................................................... 58 
 
List of Figures 
Figure 3-1 
Study Flow Chart ........................................................................................ 24 
 
List of Appendices 
Appendix A 
Additional Safety Information .................................................................... 83 
Appendix B 
International Airline Transportation Association 6.2 Guidance Document 86 
Appendix C 
Actions Required in Cases of Combined Increase of Aminotransferase 
and Total Bilirubin - Hy’s Law ................................................................... 87 
Appendix D 
Actions Required in Cases of a Renal-related Urolithiasis 
Treatment-emergent Adverse Event or a Serum Creatinine Elevation ....... 92 
 
 
 


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LIST OF ABBREVIATIONS AND DEFINITION OF TERMS 
Please note: definitions of abbreviations for pharmacokinetic variables are also presented in 
Section 10.2.1 of this protocol. 
Abbreviation or 
special term 
Explanation 
λz 
Terminal elimination rate constant 
λz lower 
Lower (earlier) t used for λz determination 
λz upper 
Upper (later) t used for λz determination  
λzN 
Number of data points used for λz determination 
λz span ratio 
Time period over which λz was determined as ratio of t½λz 
AE 
Adverse event (see definition in Section 6.3.1.1) 
ALP 
Alkaline phosphatase 
ALT 
Alanine aminotransferase 
AST 
Aspartate aminotransferase 
AUC(0-24) 
Area under plasma concentration-time curve from zero to 24 hours post-dose 
AUCextr 
Extrapolated area under the curve from tlast to infinity, expressed as a percentage 
of AUCinf 
AUCinf 
Area under plasma concentration-time curve from time zero to infinity 
AUClast 
Area under the plasma concentration-time curve from zero to time of last 
quantifiable concentration 
AZ 
AstraZeneca 
BMI 
Body mass index 
bpm 
Beats per minute 
CKD 
Chronic kidney disease 
CI 
Confidence interval  
CL/F 
Apparent total body clearance of drug from plasma after extravascular 
administration  
ClinBase™ 
Parexel's electronic source data capturing and information management system 
Cmax 
Maximum observed plasma peak concentration 
COVID-19 
Coronavirus disease 2019 
CRF 
Case report form 
CRO 
Contract research organization 
CRP 
C-reactive protein 
CSP 
Clinical study protocol 
CSR 
Clinical study report  
CV 
Coefficient of variation 


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Abbreviation or 
special term 
Explanation 
DAE 
Adverse event leading to the discontinuation of IMP 
DCF 
Data clarification form 
DMP 
Data management plan 
DNA 
Deoxyribonucleic acid 
DVS 
Data validation specification 
ECG 
Electrocardiogram 
ECMO 
Extracorporeal membrane oxygenation 
eGFR 
Estimated glomerular filtration rate 
ER 
Extended release 
EU 
European Union 
FDA 
Food and Drug Administration 
FSH 
Follicle-stimulating hormone 
GCP 
Good Clinical Practice 
GGT 
Gamma glutamyl transpeptidase (transferase) 
GMP 
Good Manufacturing Practice 
Hb 
Hemoglobin 
HBc 
Hepatitis B core 
HBsAg 
Hepatitis B surface antigen 
HCT 
Hematocrit 
HF 
Heart failure 
HIV 
Human immunodeficiency virus 
HL 
Hy’s Law 
HLA-B 
Human leukocyte antigen B 
HR 
Heart rate 
IATA 
International Airline Transportation Association 
IB 
Investigator’s brochure 
ICF 
Informed Consent Form 
ICH 
International Council for Harmonisation 
IEC 
Independent Ethics Committee 
IMP 
Investigational medicinal product 
IR 
Immediate release 
LLOQ 
Lower limit of quantification 
MCH 
Mean corpuscular hemoglobin 
MCHC 
Mean corpuscular hemoglobin concentration 
MCV 
Mean corpuscular volume 


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Abbreviation or 
special term 
Explanation 
MedDRA 
Medical Dictionary for Regulatory Activities 
MRAUCinf 
Ratio of metabolite AUCinf to parent AUCinf 
MRAUClast 
Ratio of metabolite AUClast to parent AUClast 
MRCmax 
Ratio of metabolite Cmax to parent Cmax 
MRTinf 
Mean residence time of the unchanged drug in the systemic circulation 
ms 
milliseconds 
n 
Number of data values 
N 
Number of subjects 
NA 
Not applicable 
NC 
Not calculated 
NR 
No result 
NQ 
Not quantifiable 
NS 
No sample 
OAE 
Other significant adverse events 
OATP 
Organic anion transporting polypeptide 
OTC 
Over-the-counter 
PD 
Pharmacodynamics 
PHL 
Potential Hy’s Law 
PI 
Principal Investigator 
PK 
Pharmacokinetics 
PR(PQ) 
ECG interval measured from the onset of the P wave to the onset of the QRS 
complex 
PT 
Preferred term 
QT 
ECG interval measured from the onset of the QRS complex to the end of the T 
wave 
QTcB 
QT interval corrected for heart rate using Bazett's formula 
QTcF 
QT interval corrected for heart rate using Fridericia’s formula 
R&D 
Research and Development 
RBC 
Red blood cell 
RCTC 
Rheumatology Common Toxicity Criteria 
Rsq-adj 
Statistical measure of fit for the regression used for λz determination adjusted for 
the number of used data points (λzN) 
RT-PCR 
Real-time Reverse Transcriptase Polymerase Chain Reaction 
SAE 
Serious adverse event (see definition in Section 6.3.1.2). 
SARS-CoV-2 
Severe acute respiratory syndrome coronavirus 2 
SAP 
Statistical Analysis Plan 


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Abbreviation or 
special term 
Explanation 
sCr 
Serum creatinine 
SD 
Standard deviation 
SJS/TEN 
Stevens-Johnson syndrome/toxic epidermal necrolysis 
SoA 
Schedule of assessments 
SOC 
System Organ Class 
SOP 
Standard operating procedure 
sUA 
Serum uric acid 
SUSAR 
Suspected unexpected serious adverse reaction 
t½λz 
Half-life associated with terminal slope (λz) of a semi-logarithmic 
concentration-time curve 
TEAE 
Treatment-emergent adverse event 
TBL 
Total bilirubin 
TCA 
Tricyclic anti-depressant 
tlast 
Time of last observed (quantifiable) plasma concentration 
tmax 
Time to reach peak or maximum observed plasma concentration 
TSH 
Thyroid-stimulating hormone 
ULN 
Upper limit of normal 
URAT1 
Novel uric acid transporter 1 
UA 
Uric acid 
USA/US 
United States of America 
Vss/F 
Volume of distribution (apparent) at steady state following extravascular 
administration 
Vz/F 
Volume of distribution (apparent) at steady state following extravascular 
administration (based on terminal phase) 
WAD 
Windows Allowance Document 
WBC 
White blood cell 
XOI 
Xanthine oxidase inhibitor 
 
 
 


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INVESTIGATORS AND STUDY ADMINISTRATIVE STRUCTURE  
Sponsor: 
AstraZeneca AB 
151 85 Södertälje 
Sweden 
Sponsor’s Lead 
Physician: 
 
AstraZeneca R&D Gothenburg 
 
431 83 Mölndal 
Sweden 
 
 
 
Sponsor’s 
Biostatistician: 
 
AstraZeneca R&D Gothenburg 
 
431 83 Mölndal 
Sweden 
 
 
 
Principal 
Investigator: 
Thomas Körnicke  
Parexel Early Phase Clinical Unit Berlin 
 
 
14050 Berlin 
Germany 
 
 
Deputy PI: 
 
Parexel Early Phase Clinical Unit Berlin 
 
 
14050 Berlin 
Germany 
 
 
PPD
PPD
PPD
PPD
PPD
PPD
PPD
PPD
PPD
PPD
PPD
PPD
PPD


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Contract 
Research 
Organization 
(CRO): 
Parexel Early Phase Clinical Unit Berlin 
 
 
14050 Berlin 
Germany 
 
Clinical 
Laboratory: 
Synlab Clinical Trial GmbH 
 
10559 Berlin 
Germany 
Contact: 
 
 
 
 
Analytical 
Laboratory: 
(pharmacokinetic 
[PK] sample 
analysis) 
Covance Bioanalytical Services, LLC 
 
Indianapolis, IN 46214 
United States of America 
Contact: 
 
 
 
 
 
 
Human 
leukocyte 
antigen (HLA) 
sample analyses 
DNA Identification Testing Division 
Laboratory Corporation of America Holdings 
 
Burlington, NC 27215-3361 
United States of America 
Contact: 
 
 
 
 
Pharmacy: 
Hubertus-Apotheke 
 
10587 Berlin 
Germany 
Contact: 
 
 
 
PPD
PPD
PPD
PPD
PPD
PPD
PPD
PPD
PPD
PPD
PPD


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Parexel 
Laboratory 
Contact: 
Parexel International GmbH, 
8 
 
14050 Berlin 
Germany 
Contact: 
 
 
 
Adverse Event 
Reporting: 
AstraZeneca Patient Safety Data Entry Site 
Tata Consultancy Services 
 
 
 
A list and contact details of investigators and other key study team members are provided in 
the Project Plan in the electronic Investigator’s Site File. A list of all participating 
investigators will be provided in the CSR. 
PPD
PPD
PPD
PPD


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1. 
INTRODUCTION 
1.1. 
Background 
Verinurad is a novel URAT1 inhibitor being developed by AstraZeneca to treat patients with 
CKD and/or HF. By inhibiting URAT1, verinurad prevents UA reabsorption, increases renal 
UA excretion, and thereby lowers sUA concentrations [1]. 
The initial development focus for verinurad was for the treatment of gout, which is caused by 
hyperuricaemia. Therefore, the initial clinical data accumulated on verinurad relate to gout. 
However, hyperuricaemia is also associated with an increased risk of CKD [2, 3, 4, 5] and HF 
[8, 9, 10], providing a rationale for developing verinurad in these indications. Despite the 
established association between hyperuricaemia and CKD and HF, a causal relationship 
between them remains to be proven. 
Verinurad is administered in combination with the xanthine oxidase inhibitor (XOI) 
allopurinol, which reduces the production of UA. By dosing verinurad with allopurinol, 
patients have a substantially decreased risk of the creatinine elevations noted with URAT1 
inhibitor monotherapy. The combination also provides a dual-mechanism approach to 
lowering sUA concentrations, by targeting both production and excretion. Clinical studies 
with verinurad have been performed using 2 XOIs: febuxostat and allopurinol, each 
administered concomitantly with verinurad. In progressing to Phase 2b, allopurinol has been 
selected as the XOI for co-administration with verinurad because it may have a better 
cardiovascular side effect profile than febuxostat. 
The IB describes results from pre-clinical studies, clinical pharmacological studies, and 
clinical monotherapy and combination therapy with allopurinol [1]. 
1.1.1. 
Description of Verinurad 
Verinurad (also known as RDEA3170) is a potent and specific URAT1 inhibitor. URAT1 is 
responsible for most of the reabsorption of filtered UA from the renal tubular lumen. By 
inhibiting URAT1, verinurad increases urine UA excretion and thereby lowers sUA. 
1.1.1.1. 
Clinical Pharmacokinetics 
Following administration of verinurad as an extended-release capsule formulation (ER8), 
Cmax occurred 4 hours after dosing. Food did not affect verinurad exposure except for a 
2-hour increase in time to maximum plasma concentration (tmax). The degree of protein 
binding of verinurad in human plasma was 97%. Glucuronidation is the major metabolic 
pathway of verinurad with oxidation as the minor pathway. The major metabolites observed in 
humans after oral verinurad dosing are the acyl glucuronides M1 and M8 which are renally 
cleared. The amount of verinurad in urine is small (<2% of given dose). The terminal half-life 
(t½) of verinurad was 13 hours in subjects with normal renal function and 21 hours in those 


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with moderate renal impairment. The exposure ([AUC] and Cmax) of verinurad increased in a 
dose proportional manner and the accumulation was minimal after once daily dosing. Subjects 
with an eGFR of 45 and 60 mL/min/1.73m2 are predicted to have a 1.4 and 1.2-fold higher 
verinurad exposure, respectively, compared to those with normal renal function (eGFR of 
90 mL/min/1.73m2). Asian subjects are predicted to have about 44% higher exposure 
compared to non-Asians after accounting for differences in renal function and body weight. 
Further information on PK findings (including PK parameters of the verinurad IR 
formulation) is available in the IB [1]. 
1.2. 
Background to COVID-19  
There is currently an outbreak of respiratory disease (COVID-19) caused by a novel Severe 
acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that was first detected in Wuhan 
City, Hubei Province, China in 2019. This new virus has rapidly spread across the globe 
causing the World Health Organization to declare a pandemic situation on March 11, 2020. 
The countermeasures initiated by national and local governments worldwide and the 
recommendations issued by the health authorities have impacted current and new clinical 
studies. As the threat of pandemic burden including new outbreaks, locally or globally, will 
impact the further conduct of clinical studies, appropriate risk assessments and mitigation 
measures will need to be taken into consideration in all clinical studies to protect subjects, site 
staff and society as a whole. 
Both EMA [2] and FDA [3] as well as national health authorities in Europe have issued new 
guidelines that aim to provide recommendations for actions for conduct of clinical studies of 
medical products during COVID-19 pandemic. Since the pandemic situation is evolving, 
guidelines, recommendations, national laws and local restrictions may change at high pace. 
Given the circumstances of potentially relapsing pandemic or epidemic situation with regard 
to the spread of COVID-19 in future, special attention will be paid to protect subjects 
participating in the study and site staff involved in the investigations against infection with 
SARS-CoV-2 as requested by the newly issued EMA guideline. 
1.3. 
Rationale for Conducting this Study 
It has been hypothesized based on in vitro data that verinurad exposure could increase if it is 
co-administered with compounds that inhibit transporters which are involved in disposition of 
verinurad, such as OATP1B1 and OATP1B3 [1]. The study outlined in this protocol aims to 
quantify the effects on verinurad PK when co-administered with cyclosporine, a broad 
transporter inhibitor, or rifampicin, a more specific OATP1B1/3 inhibitor when given as a 
single dose. The study is conducted in accordance with FDA guidance on Clinical Drug 
Interaction Studies, 2020 [11]. Verinurad will be developed as a fixed combination since it 
will always be administered together with allopurinol. 


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The study design is deemed appropriate for conduct in healthy volunteers during COVID-19 
pandemic. 


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2. 
STUDY OBJECTIVES 
2.1. 
Primary Objectives 
Table 2-1 
Primary Objectives and Outcome Measures 
Primary Objectives 
Outcome Measures 
To assess the effect of a single dose of 
cyclosporine on the PK of verinurad 
Verinurad Cmax, AUCinf and AUClast ratios of 
geometric means of test treatment (verinurad+allopurinol 
with cyclosporine), relative to reference treatment 
(verinurad+allopurinol alone). 
To assess the effect of a single dose of rifampicin 
on the PK of verinurad 
Verinurad Cmax, AUCinf and AUClast ratios of 
geometric means of test treatment (verinurad+allopurinol 
with rifampicin), relative to reference treatment 
(verinurad+allopurinol alone). 
See List of Abbreviations for definition of abbreviations in Table 2-1 
2.2. 
Secondary Objectives 
Table 2-2 
Secondary Objectives and Outcome Measures 
Secondary Objectives 
Outcome Measures 
To assess the effect of a single dose of 
cyclosporine or rifampicin on the PK of verinurad 
metabolites M1 and M8 
M1 and M8 Cmax, AUCinf and AUClast ratios of 
geometric means of test treatment (verinurad+allopurinol 
with cyclosporine), relative to reference treatment 
(verinurad+allopurinol alone). 
 
M1 and M8 Cmax, AUCinf and AUClast ratios of 
geometric means of test treatment (verinurad+allopurinol 
with rifampicin), relative to reference treatment 
(verinurad+allopurinol alone). 
To assess the effect of a single dose of 
cyclosporine or rifampicin on the PK of 
allopurinol and oxypurinol 
Allopurinol and oxypurinol Cmax, AUCinf and AUClast 
ratios of geometric means of test treatment 
(verinurad+allopurinol with cyclosporine), relative to 
reference treatment (verinurad+allopurinol alone). 
 
Allopurinol and oxypurinol Cmax, AUCinf and AUClast 
ratios of geometric means of test treatment 
(verinurad+allopurinol with rifampicin), relative to 
reference treatment (verinurad+allopurinol alone). 


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Secondary Objectives 
Outcome Measures 
To describe the PK parameters and the PK profiles 
for verinurad, M1, M8,allopurinol and oxypurinol 
when verinurad+allopurinol is administered alone 
or in combination with cyclosporine or rifampicin. 
 Where possible the following PK parameters of 
verinurad, M1, M8, allopurinol and oxypurinol will be 
assessed: Cmax, AUCinf, AUClast, AUC(0-24), tmax, 
t½λz, λz, CL/F (parent only), MRTinf (parent only), Vss/F 
(parent only), Vz/F (parent only) and metabolite:parent 
(MP) ratios of M1 and M8: verinurad for Cmax, AUCinf 
and AUClast. Plasma concentration time profile for each 
analyte. 
To assess the safety and tolerability of verinurad 
and allopurinol in combination with cyclosporine 
or rifampicin 
Incidence of AEs, 12-leadECGs, vital signs, physical 
examination, and clinical laboratory assessment. 
See List of Abbreviations for definitions of abbreviations in Table 2-2 
 
2.3. 
Exploratory Objective 
Table 2-3 
Exploratory Objective and Outcome Measures 
Exploratory Objectives 
Outcome Measures 
To collect and store blood samples for potential future 
measurement of cyclosporine and/or rifampicin 
plasma levels. 
 
If samples are analysed: cyclosporine and rifampicin 
plasma concentrations. 
 
To collect blood and urine samples for additional 
clinical chemistry and urinalysis. 
Collected on Days 1, 2 and 3 in Treatment Period 1. 
Exploratory data will not form part of the CSR and will not be included in the tables, figures or listings of this 
study. 
Refer to Section 10.2 for PK variables and Section 6.3 for safety variables. 
3. 
STUDY DESIGN 
3.1. 
Overall Study Design and Flow Chart 
This study will be an open-label, 3-period, 3-treatment, fixed-sequence study in healthy 
subjects (males and females of non-childbearing potential), performed at a single Clinical 
Unit. 
The study will comprise of the following periods (visits): 
• 
A Screening Period of maximum 28 days (Visit 1); 
• 
A fixed sequence of 3 Treatment Periods during which subjects will be resident at the 
Clinical Unit from one day prior to administration of verinurad+allopurinol (Day -1) of 
Treatment Period 1 until the morning of Day 5 of the Treatment Period 2, and similarly 
between Day -1 to Day 5 of Treatment Period 3. There will be a washout period of 14 




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Table 3-1 
Schedule of Assessments 
Study Assessments 
Visit 1 
Visit 2 
Visit 3 
Visit 4 
Corresponding 
Section in 
Protocol 
Screening 
Treatment 
Period 1 
Treatment 
Period 2 
Treatment 
Period 3 
Follow-up or Early 
Termination 
Day -28 to -2 
Day -1 
Days 1 
to 5 
Days 1 to 5 
Day -1 
Days 1 
to 5 
7-14 days after last 
verinurad dose  
Informed consent 
X 
 
 
 
 
 
 
Section 8.5 
Inclusion/exclusion criteria 
X 
X 
 
 
 
 
 
Section 4.1 
Eligibility Assessment 
 
 
 
 
X 
 
 
Section 4.1 
Demographic data 
X 
 
 
 
 
 
 
Section 11.2.3.1 
Weight, height and BMI 
X 
 
 
 
 
 
 
Section 11.2.3.1 
Medical/surgical history 
X 
 
 
 
 
 
 
Section 11.2.3.1 
Concomitant medication 
X 
X 
X 
X 
X 
X 
X 
Section 11.2.4.1 
Urine drug, alcohol and 
cotinine screen  
X 
X 
 
 
X 
 
 
Section 6.3.2.6  
FSH test 
X 
 
 
 
 
 
 
Section 6.3.2.2 
HIV status/hepatitis B and C 
screen, anti-HBc antibody 
X 
 
 
 
 
 
 
Section 6.3.2.5 
HLA-B*58:01 allele 
genotyping 
X 
 
 
 
 
 
 
Section 6.3.2.3 
Study residency 
Check-in 
 
X 
 
 
X 
 
 
Section 3.1 
Check-out 
 
 
 
Xa  
 
Xa 
 
Section 3.1 


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Study Assessments 
Visit 1 
Visit 2 
Visit 3 
Visit 4 
Corresponding 
Section in 
Protocol 
Screening 
Treatment 
Period 1 
Treatment 
Period 2 
Treatment 
Period 3 
Follow-up or Early 
Termination 
Day -28 to -2 
Day -1 
Days 1 
to 5 
Days 1 to 5 
Day -1 
Days 1 
to 5 
7-14 days after last 
verinurad dose  
Non-residential visit 
X 
 
 
 
 
 
X 
Section 3.1  
Verinurad + allopurinol 
administration 
 
 
Xb 
Xb 
 
Xb 
 
Section 3.1 and 
5.4.3 
Cyclosporine administration 
 
 
Xb 
 
 
 
Section 3.1 and 
5.4.3 
Rifampicin administration 
 
 
 
 
 
Xb 
 
Section 3.1 and 
5.4.3 
Safety/tolerability 
Phone call to assess 
symptoms 
Xc 
Xc 
 
 
Xc 
 
Xc 
Section 4.1.2 
SARS-CoV-2 antibody 
X 
 
 
 
 
 
 
 
SARS-CoV-2 RT-PCR 
 
X 
 
 
X 
 
 
 
Adverse event questioning 
(AEs and SAEs) 
Xd 
Xd 
X 
X 
X 
X 
X 
Section 6.3.1 
Blood pressure, pulse rate 
(supine) and temperature 
(tympanic) 
X 
X 
Xe 
Xe 
X 
Xe 
X 
Section 6.3.5 
Safety 12-lead ECG 
X 
 
 
 
 
X 
Section 6.3.4 


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Study Assessments 
Visit 1 
Visit 2 
Visit 3 
Visit 4 
Corresponding 
Section in 
Protocol 
Screening 
Treatment 
Period 1 
Treatment 
Period 2 
Treatment 
Period 3 
Follow-up or Early 
Termination 
Day -28 to -2 
Day -1 
Days 1 
to 5 
Days 1 to 5 
Day -1 
Days 1 
to 5 
7-14 days after last 
verinurad dose  
Clinical laboratory 
evaluations: 
Clinical Chemistry and 
urinalysis 
Haematology 
 
 
X 
 
X 
 
 
X 
 
X 
 
 
Xf 
 
Xg 
 
 
 
 
Xg 
 
 
X 
 
X 
 
 
 
 
Xg 
 
 
X 
 
X 
Section 6.3.2 
Physical examination 
X 
Xh 
Xh 
Xh 
Xh 
Xh 
Xh 
Section 6.3.3 
Pharmacokinetics 
Blood sampling for analysis 
of verinurad, M1, M8, 
allopurinol and oxypurinol 
plasma concentrations 
 
 
Xi  
Xi 
 
Xi 
 
Section 6.4.2 
Exploratory blood sampling 
for analysis of cyclosporine 
blood concentrations 
 
 
 
Xi 
 
 
 
Section 6.4.2 
Exploratory blood sampling 
for analysis of rifampicin 
plasma concentrations 
 
 
 
 
 
Xi 
 
Section 6.4.2 
Abbreviations: AE = Adverse event; BMI = Body mass index; ECG = Electrocardiogram; FSH = Follicle stimulating hormone; HBc = Hepatitis B core; HIV = Human 
immunodeficiency virus; HLA-B = Human leukocyte antigen B; SAE = Serious adverse events; 


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Study Assessments 
Visit 1 
Visit 2 
Visit 3 
Visit 4 
Corresponding 
Section in 
Protocol 
Screening 
Treatment 
Period 1 
Treatment 
Period 2 
Treatment 
Period 3 
Follow-up or Early 
Termination 
Day -28 to -2 
Day -1 
Days 1 
to 5 
Days 1 to 5 
Day -1 
Days 1 
to 5 
7-14 days after last 
verinurad dose  
a  
Subjects will be allowed to leave (discharged from) the clinical unit after the last PK sample is taken at 96 hours after dosing (Day 5). 
b  
Occurs on Day 1, in each Treatment period (considered as the 0 hour time point) 
c  
Subjects will be contacted within 24 hours before a scheduled visit to the Clinical Unit to confirm that no signs and/or symptoms of COVID-19 are present and 
that no subject had any contact with a known SARS-CoV-2 positive tested person within the last 14 days. In the case that a subject confirms signs and/or 
symptoms or has had contact with a SARS-CoV-2 positive person, the visit will be canceled and the reason for the cancellation will be appropriately 
documented. 
d  
Only SAEs will be recorded during the Screening period and on Day -1 Treatment Period 1 (Visit 1) 
e  
Blood pressure, pulse rate (supine) and temperature (tympanic) will be taken at pre-dose and 1.5, 4, and 6 hours after dosing on Day 1 and on Days 2, 3, 4 and 5 
in each Treatment Period. 
f  
In Treatment Period 1, urine samples and blood for clinical chemistry will be collected on Days 1, 2 and 3. Urine samples will include only the measurement of 
sodium, creatinine, lactic acid, potassium, aldosterone and pH. Blood samples will include only the measurement of creatinine, cystatin-C and sodium. 
g  
Blood for haematology will be collected on Day 3 only. 
h  
A full physical exam will occur at the Screening and Follow-up Visits. A brief physical exam will occur on Day -1 and Day 3 in each Treatment Period. 
i. 
Blood samples will be taken at the following time points: up to 30 minutes pre-dose and at 30 minutes and 1, 1.5, 2, 3, 4, 5, 6, 8, 10, 12, 24, 36, 48, 72 and 96 
hours post-dose. 
 


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3.1.1. 
Order of Assessments 
It is important that PK sampling occurs as close as possible to scheduled time. In order to 
achieve this, other assessments scheduled at the same time may be initiated prior to the time 
point. The sequence at a particular time point is: 
1 
Vital signs (systolic and diastolic blood pressure, pulse rate and tympanic temperature) 
2 
PK blood sampling (will be drawn at the specified time points) 
3 
Safety laboratory blood sampling 
Tolerance windows for the assessments will be detailed in the WAD. 
3.1.2. 
End of Study 
The end of study is defined as the last subject’s last visit to the Clinical Unit. 
3.1.3. 
Expected Duration of the Study 
Each subject will be involved in the study for approximately 9 weeks and have approximately 
4 study visits. 
3.2. 
Rationales for Study Design and Dose Selection 
3.2.1. 
Rationale for Study Design 
This study has been designed to quantify the effects on verinurad PK when co-administered 
with cyclosporine, a broad transporter inhibitor, or rifampicin, an OATP1B1/3 inhibitor when 
given as a single dose. 
A fixed-sequence design allows to determine whether cyclosporine or rifampicin affects the 
PK of verinurad. Verinurad is given in combination with allopurinol, since verinurad is 
developed as a fixed dose combination with allopurinol. This design is consistent with 
regulatory guidelines for drug interaction studies [11]. 
The 14-day washout period between Treatment Periods 2 and 3 dosing, is considered 
sufficient to avoid carry-over effects between Treatment Periods 2 and 3. The 7-14 days 
washout period between rifampicin administration and the Follow-up Visit is also considered 
a sufficient time period [18]. 
The PK sampling time points in all periods (up to 96 hours) are based on the plasma half-lives 
of the IMP as well as previous experience in assessing PK profiles of verinurad, allopurinol 
and their metabolites [1, 16]. 


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3.2.2. 
Dose Rationale 
A single dose of 7.5 mg verinurad, formulated as an extended release capsule (ER8) is 
selected for this study. This is the middle dose currently tested in a Phase 2b study. The AUC 
and Cmax of verinurad increases in a dose proportional manner after administration of single 
doses of 4.5 to 12 mg ER8 verinurad capsule. Multiple dosing of 24 mg ER8 verinurad once 
daily doses, and single doses of 40 mg verinurad as immediate release tablets, have been 
assessed previously in healthy volunteers and been found to be well tolerated. 
A single dose of 300 mg of allopurinol was selected because it is the intended clinical dose in 
the verinurad+allopurinol fixed-dose-combination. 
A single dose of 600 mg cyclosporine reflects daily doses in transplant patients and has been 
used in similar drug-drug interaction studies in the past [12, 13]. 
A single dose of 600 mg rifampicin is the highest daily recommended dose and has been used 
for both single and multiple dosing in drug-drug interaction studies in the past [14, 15]. 
3.3. 
Risk-benefit Assessment 
There are no direct benefits for the subjects participating in this study. However, study-related 
health assessments are provided without costs for the subjects. The major risks for subjects 
who participate in the study will come from IMP administration. In addition, there might be a 
slight risk of infection or bruising that might occur after insertion of an intravenous cannula 
for frequent blood sampling. 
The main toxicity concern noted with verinurad monotherapy in healthy subjects is creatinine 
elevations >1.5 × baseline which occurred in 1.7% of healthy subjects. A change from 
baseline of ≥0.3 mg/dL was reported for 6.8% of all subjects. There was no apparent 
relationship between sCr elevation and dose of verinurad. The creatinine elevations were 
primarily transient, and often resolved despite continued dosing with verinurad. This risk is 
mitigated by combining verinurad with an XOI, excluding subjects with high uric acid and 
mandating hydration. Further information is provided in the IB [1]. 
In previous studies, verinurad combined with allopurinol was well tolerated and associated 
with acceptable side effects. Most AEs were minor and not related to treatment. 
Allopurinol is an approved XOI. Most common AEs identified in the prescribing information 
are rash and blood thyroid-stimulating hormone increased. Allopurinol hypersensitivity 
reactions can manifest in many different ways, including maculopapular exanthema, 
hypersensitivity syndrome (also known as drug rash with eosinophilia and systemic symptoms 
[DRESS]) and SJS/TEN. The human leukocyte antigen B (HLA-B)*58:01 allele has been 
shown to be associated with increased risk of developing allopurinol-related hypersensitivity 


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syndrome and SJS/TEN. The frequency of the HLA-B*58:01 allele varies widely between 
ethnic populations: up to 20% in the Han Chinese population, 8 to 15% in the Thai population, 
about 12% in the Korean population and 1 to 2% in individuals of Japanese or European 
origin. At the Screening Visit, the subject’s HLA-B*58:01 status will be tested and carriers of 
HLA-B*58:01 will be excluded [16]. 
Overall, the study has been designed to minimize the risks to participating subjects by 
excluding subjects at high risk of AEs and by applying appropriate safety monitoring of 
recruited study subjects. This is a single dose study and subjects will only be exposed to 
1 dose of each treatment (verinurad+allopurinol, verinurad+allopurinol+cyclosporine and 
verinurad+allopurinol+rifampicin). The dose selected has been carefully considered in light of 
the target subject population. The potential benefits of developing a new treatment for chronic 
kidney disease with hyperuricemia, therefore, outweigh the limited risks to the subjects 
exposed to verinurad and allopurinol single doses in this study. 
3.3.1. 
Adverse Events, Contraindications and Warnings of Verinurad 
Verinurad has been studied in healthy subjects, patients with gout and renally-impaired 
patients. In total, 849 subjects have received verinurad in 11 Phase I and 7 Phase II clinical 
studies (data as of 01 Nov 2019). 
Safety in healthy subjects was assessed in a pooled analysis of 8 Phase I (Studies 101, 103, 
104, 105, 106, 110, 111, and 112) and in a single Phase I study (D5495C00006). A summary 
of information on clinical safety findings in healthy subjects is provided below; further details 
are available in the IB [1]. 
Adverse Events 
The 8 pooled Phase I studies collectively enrolled 293 male subjects, treated at doses ranging 
from 5 to >15 mg; 94.5% of the subjects completed the planned treatment. Overall, 
86 subjects (29.4%) experienced AEs. The incidence of AEs was similar among the pooled 
verinurad groups and pooled placebo groups. The most common AE was headache, which 
occurred in 12 subjects (4.1%). There was no apparent relationship between the incidence of 
these AEs and verinurad dose. Most AEs were RCTC toxicity Grade 1. Only 2 AEs had an 
RCTC toxicity >Grade 2, consisting of Grade 3 blood creatinine increased and Grade 3 tooth 
infection, both reported in subjects treated with verinurad doses ranging from 5 to <10 mg. 
There were no SAEs. Three subjects withdrew from the study due to AEs: 2 subjects who had 
received verinurad 5 mg (dehydration and influenza, respectively) and 1 subject who had 
received verinurad 15 mg and experienced urticaria. 
Study D5495C00006 was a double-blind safety and PK study in healthy Asian and Chinese 
subjects who were randomised to receive verinurad + allopurinol or placebo. No deaths or 


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SAEs were reported in the study and no subject discontinued IMP due to an AE. All AEs 
reported on IMP were mild in intensity. 
Laboratory Evaluations 
In the pooled analysis of the 8 Phase I studies, sCr elevations ≥1.25 × baseline and ≥1.5 × 
baseline were reported for 13.7% and 1.7% of subjects, respectively. A change from baseline 
≥0.3 mg/dL was reported for 6.8% of all subjects. There was no apparent relationship between 
sCr elevation and dose of verinurad. Furthermore, 18.4% of all subjects treated with verinurad 
experienced ALT elevations ≥1.5 × baseline, 5.1% experienced elevations ≥2.0 × baseline, 
and 2.0% experienced elevations ≥3.0 × baseline. There was no clear relationship with dose. 
Aspartate aminotransferase elevations ≥1.5 × baseline were reported for 6.1% of all subjects, 
while <1.5% of subjects experienced AST elevations ≥2.0 or ≥3.0 × baseline. 
In Study D5495C00006, no subjects on verinurad + allopurinol had an elevation >3.0 × ULN 
for ALT or AST or >2.0 × ULN for total bilirubin. No sCr elevation ≥1.5 × baseline was 
observed in the study. 
Vital Signs, Physical Findings, and Other Observations 
In the 9 Phase I studies, there were no clinically relevant or apparent dose-related 
post-treatment changes in vital signs. Although transient changes in blood pressure, HR and 
body temperature were noted at isolated time points for some subjects, none of these findings 
were judged to be clinically significant by the Investigator. 
Electrocardiogram Data 
In 8 of the Phase I studies in healthy subjects there were no apparent treatment or dose-related 
trends in the 12-lead ECG parameters and no clinically important findings in the morphology 
of the 12-lead ECG for individual subjects. However, in 1 study (Study 101), prolongations in 
QT interval corrected for QTcB of >60 ms occurred in 2 subjects in the 1 mg fasted dose 
group; yet, no subjects had prolonged QTcB intervals >450 ms. Three subjects in the 1 mg 
fasted dose group and 1 subject in the 5 mg fasted dose group had prolonged QT intervals 
corrected for QTcF (>450 to 480 ms) although no subjects had a QTcF interval >480 ms. All 
episodes of QTcF >450 ms occurred at HRs <50 bpm. 
Subjects with Gout or Asymptomatic Hyperuricemia 
Information on clinical safety findings in subjects with gout or asymptomatic hyperuricemia is 
available in the IB [1]. 


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3.3.2. 
Allopurinol 
Allopurinol is a commercially available oral XOI inhibitor for conditions where urate/UA 
deposition has already occurred or is a predictable clinical risk. Allopurinol and its main 
metabolite oxypurinol lower the level of UA. 
Please refer to the product information sheet of allopurinol tablets for information on PK, PD 
and safety [16]. 
3.3.3. 
Cyclosporine 
Cyclosporine is a commercially available systemic immunosuppressant with a known safety 
and efficacy profile. 
Although the mode of action is not fully understood, studies suggest that cyclosporine inhibits 
the development of cell-mediated reactions, including allograft immunity, delayed cutaneous 
hypersensitivity, experimental allergic encephalomyelitis, Freund's adjuvant arthritis, 
graft-versus-host disease, and also T-cell dependent antibody production. At the cellular level 
it inhibits production and release of lymphokines including interleukin 2 (T-cell growth factor, 
TCGF). Cyclosporine appears to block the resting lymphocytes in the G0 or G1 phase of the 
cell cycle and inhibits the antigen-triggered release of lymphokines by activated T-cells. All 
available evidence suggests that cyclosporine acts specifically and reversibly on lymphocytes. 
Unlike cytostatic agents, it does not depress haemopoiesis and has no effect on the function of 
phagocytic cells. 
 
Cyclosporine has a half-life of 6 hours in healthy volunteers, and discharge from the Clinical 
Unit at 96 hours post-dose deemed appropriate. 
 
Some cyclosporine side effects are related to the cardiovascular system (hypertension) and 
central nervous system (tremor, headache, convulsions, paraesthesia, encephalopathy) and 
would theoretically influence the subject who has COVID-19 but these effects would pose 
minimal risks in healthy volunteers and short duration of treatment (such as a single dose of 
600 mg cyclosporine). 
Cyclosporine has been reported to inhibit the replication of diverse coronaviruses in vitro but 
this effect is not confirmed for SARS-CoV-2. In addition, cyclosporine may be beneficial in 
severe stages of COVID-19 based on inhibition on pro-inflammatory IL-2. 
 
On consideration of the benefit/risk due to the COVID-19 pandemic, the single dose of 
cyclosporine is not considered to add any additional risk to the subjects, such as a reduction of 
the efficacy of the immune system. 
Please refer to the Summary of Product Characteristics of cyclosporine capsules for details on 
PK, PD and safety [17]. 


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Reports suggest that the plasma concentration of cyclosporine may be increased during 
concomitant treatment with allopurinol. The possibility of enhanced cyclosporine toxicity 
should be considered if the drugs are co-administered [1]. 
3.3.4. 
Rifampicin 
Rifampicin is a commercially available semisynthetic antibiotic with a known safety and 
efficacy profile. 
Please refer to the Summary of Product Characteristics of rifampicin for details on PK, PD 
and safety [18]. 
3.3.5. 
Risk Assessment for COVID-19 Pandemic 
Measures to mitigate the additional risks caused by COVID-19 are: 
• This study is going to start enrolling only when the Sponsor and CRO in collaboration 
deem it is safe to start the study. In addition, the study will not start until the local 
confinement measures or other safety restrictions linked to the COVID-19 pandemic are 
lifted by the local authorities. 
• Current national laws and local recommendations for prevention of pandemic will be 
strictly adhered to. 
• Subjects will be closely monitored for any signs and symptoms of COVID-19, including 
fever, dry cough, dyspnea, sore throat and fatigue throughout the study. Once clinical 
signs of infection are reported by subjects, the investigator needs to determine whether 
samples can be collected, and safety data can be recorded on site. If not, AEs and 
concomitant medications will be obtained via phone calls. Daily body temperature 
measurements during in-house stay and outpatient visits will be implemented. 
• The investigator will not dose subjects upon identification of any signs of COVID-19 
infection. 
• Confirmation of COVID-19 infection by optional laboratory assessment will be 
conducted based on availability (test capacity and turnaround time) of approved tests 
and on investigator’s discretion. This would include serology testing at screening and 
virus testing prior to any admission. 
• The probability of virus transmission will be controlled as much as possible by: 
− 
Advice for subject to adhere to local requirements for reduction of the public 
exposure while ambulatory. 
− 
All subjects are contacted by phone one day prior to every visit for assessing 
COVID-19 symptoms and signs and are asked not to attend the site in case of 
suspected reports. In addition, subjects are asked for any contact with a person 


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who has tested positive for SARS-CoV-2. If applicable, subjects will be referred 
to the local health care system for further follow up and treatment. 
− 
Physical distancing and person-to-person contact restrictions will be applied 
during site visits and in-house stay. 
− 
Where physical distancing is not possible personal protective equipment will be 
used by study participant (surgical face mask, gloves) and staff (for example but 
not limited to masks, gloves, protectors, medical suits) if deemed appropriate by 
the investigators and site staff and guided by local requirements. 
− 
Logistical improvements of the site and structural measures of the study site 
building will be implemented to further improve physical distancing. 


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4. 
STUDY POPULATION 
4.1. 
Selection of Study Population 
The Investigator should keep a subject screening log of all potential subjects who consented 
and were subjected to screening procedures. 
Subjects who fail to meet the inclusion criteria or meet any exclusion criterion should not, 
under any circumstances, be dosed in the study. There can be no exceptions to this rule. 
This study will be conducted in male and female subjects. The study may not necessarily be 
balanced regarding gender. It is not planned to perform sub-analyses on gender. 
4.1.1. 
Inclusion Criteria 
For inclusion in the study subjects should fulfill the following criteria: 
1 
Provision of signed and dated, written ICF prior to any study specific procedures. 
2 
Healthy male or female subjects aged 18 – 55 years (inclusive) with suitable veins for 
cannulation or repeated venipuncture. 
3 
Females must be either 
(1) Of non-childbearing potential, confirmed at Screening by fulfilling one of the 
following criteria 
(i) Post-menopausal defined as amenorrhea for at least 12 months or more following 
cessation of all exogenous hormonal treatments and FSH levels in the 
post-menopausal range (FSH >40 IU/mL). 
(ii) Documentation of irreversible surgical sterilisation by hysterectomy, bilateral 
oophorectomy or bilateral salpingectomy but not tubal ligation. 
4 
Male subjects must adhere to the contraception methods in details in Section 4.2.1.2. 
5 
Have a BMI between 18 and 30 kg/m2 (inclusive) and weigh at least 50 kg and no more 
than 100 kg (inclusive). 
6 
Must be able to swallow multiple capsules/tablets. 
 
4.1.2. 
Exclusion Criteria 
Subjects will not enter the study if any of the following exclusion criteria are fulfilled (for 
values deviating from the reference or specified range, one retest is allowed): 
1 
History of any clinically significant disease or disorder which, in the opinion of the 
Investigator, may either put the volunteer at risk because of participation in the study, or 
influence the results or the volunteer’s ability to participate in the study. 
2 
Subject has a positive test result for SARS-CoV-2 before dosing in Treatment Period 1. 


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3 
Has clinical signs and symptoms consistent with COVID-19 infection, eg fever, dry 
cough, dyspnea, sore throat, fatigue or confirmed infection by appropriate laboratory test 
within the last 4 weeks prior to screening or on admission. 
4 
History of severe COVID-19 (ECMO, mechanically ventilated). 
5 
History or presence of gastrointestinal, hepatic or renal disease, or any other condition 
known to interfere with absorption, distribution, metabolism, or excretion of drugs. 
6 
Any clinically significant illness, medical/surgical procedure, or trauma within 4 weeks 
prior to the first administration of verinurad. 
7 
Any clinically significant abnormalities in clinical chemistry, haematology, or urinalysis 
results, at Screening (Visit 1) and on first admission (Day –1 in Treatment Period 1) as 
judged by the Investigator, including: 
1) ALT >1.5 × ULN 
2) AST >1.5 × ULN 
3) Bilirubin (total) >1.5 × ULN 
4) GGT >1.5 × ULN 
If any of these tests are out of range, the test can be repeated once at the Screening 
Visit at the discretion of the Investigator. 
8 
Any clinically significant abnormal findings in vital signs at Screening Visit and/or on 
admission (Day -1 in Treatment Period 1) to the Clinical Unit, including, but not limited 
to, any of the following: 
1) Systolic blood pressure <90 mmHg or >140 mmHg and/or diastolic blood 
pressure <50 mmHg or >90 mmHg sustained for more than 10 minutes while 
resting in a supine position 
2) Heart rate (resting, supine) <50 or >90 bpm 
9 
Any clinically significant abnormalities on 12-lead ECG at Screening Visit, as judged by 
the Investigator, including, but not limited to any of the following: 
1) QTcF > 450 ms or < 340 ms or family history of long QT syndrome, 
2) Any significant arrhythmia, 
3) Conduction abnormalities, 
4) Clinically significant PR(PQ) interval prolongation (> 240 ms); intermittent 
second or third degree atrioventricular (AV) block, or AV dissociation, 
5) Complete bundle branch block and/or QRS duration > 120 ms. 
10 Any positive result at Screening Visit for serum hepatitis B surface antigen or anti-HBc 
antibody, hepatitis C antibody, and HIV antibody. 
11 Suspicion or known Gilbert’s and/or Lesch-Nyhan syndrome. 


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12 History of hypersensitivity to drugs with a similar chemical structure or class to 
verinurad, allopurinol, cyclosporine or rifampicin or excipients. 
13 Subjects who wear soft contact lenses (due to possible staining from rifampicin), unless 
the subject is prepared to refrain from wearing soft lenses throughout Treatment Period 3 
until after the last PK sample collection. 
14 Women of childbearing potential. 
15 Carrier of the HLA-B*58:01 allele. 
16 Has received another new chemical or biological entity (defined as a compound which 
has not been approved for marketing in the US or EU) within 30 days or within 5 half-
lives (whichever is longer) of the first administration of verinurad in this study. 
Note: subjects consented and screened, but not randomised in a previous Phase I study, 
are not excluded. 
17 Plasma donation within 1 month of screening or any blood donation/loss more than 
500 mL during the 3 months prior to screening. 
18 History of severe allergy/hypersensitivity or ongoing allergy/hypersensitivity, as judged 
by the Investigator or history of hypersensitivity to drugs with a similar chemical 
structure or class to URAT1 transporter inhibitor & XOI. 
19 Current smokers or those who have smoked or used nicotine products (including 
e-cigarettes) within the 3 months prior to screening. 
20 Positive screen for drugs of abuse, cotinine (nicotine) or alcohol at Screening or on each 
admission to the Clinical Unit. 
21 Use of drugs with enzyme-inducing properties such as St John’s Wort within 3 weeks 
prior to the first administration of verinurad. 
22 Use of any prescribed or non-prescribed medication including antacids, analgesics (other 
than paracetamol/acetaminophen), herbal remedies, megadose vitamins (intake of 20 to 
600 times the recommended daily dose) and minerals during the 2 weeks prior to the first 
administration of IMP or longer if the medication has a long half-life. 
23 Known or suspected history of alcohol or drug abuse or excessive intake of alcohol as 
judged by the Investigator. Excessive intake of alcohol defined as the regular 
consumption of more than 24 g of alcohol per day for men or 12 g of alcohol per day for 
women. 
24 Excessive intake of caffeine-containing drinks or food (eg, coffee, tea, chocolate) as 
judged by the Investigator. Excessive intake of caffeine defined as the regular 
consumption of more than 600 mg of caffeine per day (eg, >5 cups of coffee) or would 
likely be unable to refrain from the use of caffeine-containing beverages during in-house 
stay at the investigational site. 
25 Involvement of any AstraZeneca, Parexel or Clinical Unit employee or their close 
relatives. 


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26 Judgment by the Investigator that the subject should not participate in the study if they 
have any ongoing or recent (i.e., during the screening period) minor medical complaints 
that may interfere with the interpretation of study data or are considered unlikely to 
comply with study procedures, restrictions, and requirements. 
27 Subjects who are vegans or have medical dietary restrictions. 
28 Subjects who cannot communicate reliably with the Investigator and/or are not able to 
read, speak and understand the German language. 
29 Vulnerable subjects, eg, kept in detention, protected adults under guardianship, 
trusteeship, or committed to an institution by governmental or juridical order. 
 
4.2. 
Restrictions During the Study 
The following restrictions apply for the specified times during the study period: 
1 
On Day 1 of each treatment period (Period 1, Period 2 and Period 3), subjects will be 
fasted for at least 10 hours prior to dosing until 4 hours after dosing. Water will be 
allowed except from 1 hour before and after dosing. (excluding water used in conjunction 
with dosing; see Section 5.4.3). 
2 
Subjects will be instructed to drink approximately 2 L to 2.5 L of liquid a day (including 
Day -1) throughout the duration of the study. 
3 
Subjects should not lie fully supine (unless specified for certain assessments) for 4 hours 
after dosing. 
4 
Subjects should not engage in any strenuous activity from 72 hours prior to check-in until 
after their final Follow-up Visit. 
5 
Subjects should abstain from alcohol for 72 hours from the first check-in (Day -1 of 
Treatment Period 1) until after their last PK sampling visit. Subjects should also abstain 
from alcohol for 72 hours before the Screening Visit and their final Follow-up Visit. 
6 
Prior to each treatment period, subjects should abstain from caffeine-containing foods and 
beverages (eg, coffee, tea, chocolate) for 24 hours prior to check-in until discharge from 
the Clinical Unit. 
7 
Subjects should abstain from grapefruit or grapefruit juice, Seville oranges, quinine (eg, 
tonic water) from 7 days prior to check-in on Day -1 until after their Follow-up Visit. 
8 
During admission periods, subjects will receive a standard diet, which excludes all 
alcohol and grapefruit-containing products. No additional food or beverages must be 
consumed while in the Clinical Unit. 
9 
During the subjects’ outpatient periods, subjects should abstain from consuming high 
energy drinks (eg, Red Bull®), and food containing poppy seeds and any OTC medication 
or herbal preparations until after their final Follow-up Visit has been completed. Subjects 


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should also limit their caffeine intake to equivalent of 3 servings of coffee per day (1 
serving = 330 mL cola, 180 mL coffee, or 240 mL tea). 
10 Subjects who wear soft contact lenses, unless the subjects is prepared to refrain from 
wearing soft lenses from check-in (Day -1 in Treatment Period 1) until after the last PK 
sample collection. 
11 Subjects will be required to abstain from blood or plasma donation until 3 months after 
the final medical examination at the study Follow-up Visit. 
12 Subjects are advised to adhere to local requirements for reduction of the public 
SARS-CoV-2 exposure while ambulatory. All subjects are called one day prior to every 
visit for assessing COVID-19 symptoms and signs and are asked not to attend the site in 
case of suspected infection. In addition, subjects are asked for any contact with a person 
who has confirmed infection. If applicable, subjects will be referred to the local health 
care system. Physical distancing and person-to-person contact restrictions will be applied 
and explained to subjects while staying at the study site. Where physical distancing is not 
possible study participants will be asked to use surgical face masks and/or gloves if 
deemed appropriate by the Investigator and site staff and guided by local requirements. 
For medication restrictions, please refer to Section 11.2.4.1. 
4.2.1. 
Reproductive Restrictions 
Verinurad is not genotoxic, has no effect on fertility in animal studies, and carries a low risk 
for foetal harm at maternally nontoxic doses in animal studies. Verinurad had no effects on 
fertility or embryo-foetal development in rats at doses up to 300 mg/kg/day and did not affect 
embryo-foetal development in rabbits at doses up to 30 mg/kg/day [1]. 
There is inadequate evidence of safety of allopurinol in human pregnancy, although it has 
been in wide use for many years without apparent ill consequence. 
Cyclosporine and rifampicin have both been shown to have reproductive toxicity in animal 
studies and falls under the FDA Pregnancy category C [17, 18]. 
Therefore, a female subject who participates in the clinical trial must either: 
 
• Be of non-childbearing potential, that is, must be surgically sterilised or 
• Be post-menopausal as described in Section 4.2.1.1 
 
4.2.1.1. 
Women of Non-Childbearing Potential 
Only women who are of non-childbearing potential will be allowed to participate in this study. 
Women of non-childbearing potential are defined as female subjects who are permanently 
surgically sterilised or post-menopausal. 


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Acceptable methods of sterilisation include: 
• Surgical bilateral oophorectomy (with or without hysterectomy) at least 6 weeks 
before Screening. In the case of oophorectomy alone, only when the reproductive 
status of the woman has been confirmed by follow-up hormone level assessment. 
• Hysterectomy at least 6 weeks before Screening. 
• Bilateral salpingectomy. 
Females are considered post-menopausal if they have had amenorrhea for at least 12 months 
or more following cessation of all exogenous hormonal treatments and FSH levels are in the 
post-menopausal range (eg, age appropriate, history of vasomotor symptoms) or for women 
<60 years the FSH levels are >40 mIU/mL. 
4.2.1.2. 
Male Subjects 
Restrictions for Male Subjects 
Verinurad had no effects on fertility or embryo-foetal development in rats at doses up to 
300 mg/kg/day and did not affect embryo-foetal development in rabbits at doses up to 
30 mg/kg/day. Therefore, it is important that women of childbearing potential, who are the 
partners of male subjects, do not become pregnant during the study and for a total period of 
3 months after the male subject has attended the study Follow-up Visit. 
Male subjects who have been sterilised are required to use one barrier method of 
contraception (condom) from the time of IMP administration until after the follow-up visit. 
The subject must have received medical assessment of the surgical success. 
As a precaution, all non-sterilised male subjects should avoid fathering a child by either true 
abstinence1 or use a condom and their female partner/spouse has to be either of 
non-childbearing potential or has to use a highly effective contraception form of birth control, 
starting from the time of IMP administration until 3 months after the study follow-up visit. 
The female partner/spouse should be stable on their chosen method of birth control for at least 
3 months first dosing. 
Highly effective contraception form of birth control, ie. a form of birth control with a failure 
rate of less than 1% per year when used consistently and correctly, are: 
• 
Combined (estrogen and progestogen containing) hormonal contraception associated with 
inhibition of ovulation: 
 
1 Sexual abstinence is defined as refraining from heterosexual intercourse during the entire period of risk 
associated with the study treatments. It is only acceptable if preferred and usual lifestyle of the subject. 


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− 
Oral 
− 
Intravaginal 
− 
Transdermal 
• 
Progestogen-only hormonal contraception associated with inhibition of ovulation: 
− 
Oral 
− 
Injectable 
− 
Implantable 
• 
Intrauterine device 
• 
Intrauterine system 
• 
Bilateral tubal occlusion of female partner 
Sperm Donation 
Male subjects should not donate sperm for the duration of the study and for at least 3 months 
after the study Follow-up Visit. 
Pregnancy 
Male subjects will be instructed that if their partner becomes pregnant during the study this 
should be reported to the Investigator. The Investigator should also be notified of pregnancy 
occurring during the study but confirmed after completion of the study. In the event that a 
subject’s partner is subsequently found to be pregnant after the volunteer is included in the 
study, then consent will be sought from the partner and if granted any pregnancy will be 
followed and the status of mother and/or child will be reported to the Sponsor after delivery. 
A pregnancy notification form and follow-up will be completed. 
4.3. 
Replacement of Subjects 
Subjects who are withdrawn from the study due to AEs or changes in safety parameters will 
not be replaced unless a specific sample size is to be met for statistical purposes and if the 
Sponsor’s responsible physician and the Investigator agree it is safe to do so. Subjects who 
withdraw or are withdrawn from the study for suspected or confirmed COVID-19 infection or 
other reasons may be replaced following discussion with the Sponsor. 
5. 
STUDY CONDUCT 
5.1. 
Subject Enrolment and Randomisation 
As this is a fixed sequence study, randomisation does not apply. 
The Investigator will ensure: 


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• 
Signed ICF is obtained from each potential subject before any study specific procedures 
are performed. 
• 
Each potential subject is assigned a unique enrolment number at screening upon signing 
the ICF. 
• 
The eligibility of each subject is in accordance with the inclusion and exclusion criteria. 
• 
Each eligible subject is assigned a unique enrolment code. 
 
When using unique enrolment number, the specific format must be followed (i.e., reduced 
enrolment number “1001” in ClinBase™ and on labels, full enrolment number “E0001001” 
for outputs). 
If a subject withdraws his/her participation in the study, then his/her enrolment code cannot be 
reused. If a replacement is mandated, replacement subjects will receive a new enrolment 
number. 
5.2. 
Procedures for Handling Incorrectly Enrolled Subjects 
Subjects who fail to meet the inclusion criteria or meet any exclusion criterion should not, 
under any circumstances, be enrolled into the study. There can be no exceptions to this rule. 
Where a subject, who does not meet the selection criteria, is enrolled in error and this is 
identified before dosing, the subject should be withdrawn from the study. If a subject is 
withdrawn prior to dosing they will be replaced. 
If a subject, who does not meet the selection criteria and has been dosed before the error is 
identified, the subject should be withdrawn and advised to continue safety assessments to 
ensure their safety. The Investigator will inform the AstraZeneca Lead Physician of the error 
and a joint decision made as to whether the subject should be replaced. 
5.3. 
Blinding 
This is an open-label study and blinding is not applicable. 
5.4. 
TREATMENTS 
5.4.1. 
Identity of the Investigational Medicinal Product 
Details on the identity of the test products (verinurad, allopurinol) and interaction products 
(cyclosporine and rifampicin) are presented in Table 5-1. 


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Table 5-1 
Identity of the Investigational Medicinal Product 
Investigational 
Medicinal Product 
Name 
Verinurad 
Allopurinol 
Cyclosporine 
Rifampicin 
Trade Names: 
Verinurad 
Allopurinol 
Sandimmun Optoral 
Eremfat 
Manufacturer:  
AstraZeneca 
Teva 
Pharmaceutical 
Novartis Pharma 
GmbH 
RIEMSER 
Pharma GmbH 
Formulation: 
Capsule 
Tablet 
Soft Capsule 
Film coated 
Tablets 
Strength/concentration: 
7.5 mg 
300 mg 
100 mg 
600 mg 
Dose: 
7.5 mg 
300 mg 
600 mg 
600 mg 
Route of 
administration: 
Oral  
Oral  
Oral  
Oral  
Specific device for 
drug administration, if 
applicable: 
Not applicable 
Not applicable 
Not applicable 
Not applicable 
Regimen: 
Single dose of 
7.5 mg 
Single dose of 
300 mg 
Single dose of 
600 mg 
Single dose of 
600 mg 
Special handling 
requirements: 
Not applicable 
 
 
Details of the batch numbers will be included in the trial master file and the final CSR. 
5.4.2. 
Supply of Investigational Medicinal Product 
Verinurad and allopurinol will be supplied by AstraZeneca and provided in study-specific 
labeled bottles. Cyclosporine and rifampicin will be sourced by Parexel. 
A technical agreement between the Investigator and AstraZeneca will be in place to cover all 
pharmacy related activities, detailing roles and responsibilities prior to receipt of the IMPs at 
the Clinical Unit. 
A release document signed by a legally authorised Qualified Person at the Clinical Unit will 
be placed in the appropriate section of the Trial Master File to document labeling and 
dispensing of the IMP to the subject. 
5.4.3. 
Dose and Treatment Regimens 
Subjects will receive single oral doses of verinurad, allopurinol, cyclosporine and rifampicin 
in the following Treatment Periods under fasted conditions. 
• 
Treatment Period 1: 7.5 mg verinurad and 300 mg allopurinol, fasted state (>10 h) 


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• 
Treatment Period 2: 7.5 mg verinurad, 300 mg allopurinol and 600 mg cyclosporine, 
fasted state (>10 h) 
• 
Treatment Period 3: 7.5 mg verinurad, 300 mg allopurinol and 600 mg rifampicin, fasted 
state (>10 h) 
The dose will be administered after an overnight fast of at least 10 hours and will be taken 
with 240 mL of water. 
Subjects will be allowed to drink water to prevent dehydration until 1 hour before dosing. 
Water will be allowed ad libitum from 1 hour after dosing and a standard meal will be given 
4 hours after dosing. 
After dosing, subjects will remain semi-supine on their bed or sitting (except when necessary 
for study procedures) until completion of the 4 hour vital sign assessments. 
Subjects will receive the following IMPs in each Treatment Period, respectively: 
Table 5-2 
IMP in each Treatment Period 
Treatment 
Period 
IMP 
Formulation  
Dose 
Period 1 
Verinurad 
Capsule 
1 x 7.5 mg 
Allopurinol 
Tablet 
1 x 300 mg 
Period 2 
Verinurad 
Capsule 
1 x 7.5 mg 
Allopurinol 
Tablet 
1 x 300 mg 
Cyclosporine 
Soft Capsule 
6 x 100 mg 
Period 3 
Verinurad 
Capsule 
1 x 7.5 mg 
Allopurinol 
Tablet 
1 x 300 mg 
Rifampicin 
Film coated 
Tablet 
1 x 600 mg 
 
Other restrictions, including posture control are described in Section 29. Data of subjects may 
be excluded from the PK analysis set as described in Section 11.1.3. 
5.4.4. 
Labelling 
Labels will be prepared in accordance with GMP and local regulatory guidelines. 


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The labels will fulfill GMP Annex 13 requirements and medical device directive for labeling. 
5.4.5. 
Storage and Handling Procedures 
All Investigational medicinal products will be stored in a secure facility, details of storage 
conditions will be provided on the label of the IMP. 
5.5. 
Concomitant and Post-study Treatment(s) 
Apart from paracetamol/acetaminophen, no concomitant medication or therapy will be 
allowed. 
The subjects should be instructed that no other medication is allowed, including herbal 
remedies, vitamin supplements and OTC products, without the consent of the Investigator. 
Medication, which is considered necessary for the subject’s safety and well-being, may be 
given at the discretion of the Investigator during the residential period. 
When any medication is required, it should be prescribed by the Investigator. Following 
consultation with AstraZeneca Lead Physician, the Investigator should determine whether or 
not the subject should continue in the study. Administration of concomitant medications that 
may influence the measurement of the PK endpoints may be documented as a protocol 
deviation after consultation of the Investigator with AstraZeneca Lead Physician. 
5.6. 
Treatment Compliance 
Dosing will take place at the Parexel Early Phase Clinical Unit – Berlin site. 
The administration of all IMPs will be recorded in ClinBase™. 
Compliance will be assured by direct supervision and witnessing of IMP administration. After 
IMP administration, a check of the subject’s mouth and hands will be performed. 
5.6.1. 
Drug Accountability, Dispensing and Destruction 
Verinurad and allopurinol provided for this clinical study will be used only as directed in the 
CSP. 
In accordance with GCP, the investigational site will account for all supplies of verinurad, 
allopurinol, cyclosporine and rifampicin. Details of receipt, storage, dispensing and return will 
be recorded. 
All unused supplies of verinurad, allopurinol, cyclosporine and rifampicin will either be 
destroyed by Parexel or returned at the end of the study in accordance with instruction by the 
Sponsor. 


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5.7. 
Discontinuation of Investigational Product and Withdrawal from 
Study 
Dosing for any individual subject will be stopped if the subject experiences a possibly 
drug-related SAE or a possibly drug-related significant non-serious AE, which in the opinion 
of the Investigator warrants discontinuation of the subject from the active protocol for his or 
her well-being. 
Subjects must be discontinued from treatment in the following situations: 
• 
Subject decision. The subject is at any time free to discontinue treatment, without 
prejudice to further treatment. 
• 
Severe non-compliance to study protocol. 
• 
Any significant and clinically relevant changes in the safety parameters (eg, ECG, blood 
pressure, pulse rate, laboratory assessments and AE) making the continuation of IMP 
treatment administration unjustified. 
• 
Study specific withdrawal criteria: If a subject reports symptoms which are considered 
unacceptable by the subject or the Investigator, he/she will be withdrawn from the study. 
In particular: 
− 
Any other severe or serious adverse event (SAE) that is judged as possibly related to 
the treatment by the Investigator 
− 
Any case of Potential Hy’s Law (PHL) according to Appendix C 
− 
See Appendix D for details on the handling of renal-related or urolithiasis 
treatment-emergent AEs, and the handling of serum creatinine elevation, which 
includes criteria for stopping treatment. 
− 
Any suspected or confirmed COVID-19 case will be immediately discontinued from 
study treatment 
The appropriate AE form in the CRF must be completed. 
5.7.1. 
Procedures for Withdrawal of a Subject from the Study 
If a subject withdraws or is withdrawn from the study, the subject will be encouraged to return 
to the Clinical Unit for an Early Termination Visit to ensure the subjects safety. 
5.8. 
Premature Termination of the Study 
The study must be terminated prematurely if: 
• 
The Investigator and the Sponsor assess that the number and/or severity of AEs justify 
discontinuation of the study. For instance, when there is 1 case of fatal SAE or 2 cases of 
other SAEs, in both situations considered at least possibly related to the IMP by the 
Investigator and the Sponsor. 
• 
The Sponsor considers the applied doses of the IMP to be no longer relevant. 


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• 
The Sponsor decides to discontinue the study. 
• 
Data, that was now known before, becomes available and raise concern about the safety 
of IMP so that continuation would pose potential risks to the subjects. 
• 
New data become available regarding COVID-19, which raise concern for the safe study 
conduct so that continuation would pose potential risks to the subjects or the study site 
staff. 
Premature termination of the study must be mutually agreed upon by the Investigator and the 
Sponsor and must be documented. However, study results will be reported according to the 
requirements outlined in this CSP as far as applicable. 


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6. 
COLLECTION OF STUDY VARIABLES 
6.1. 
Recording of Data 
Standard measures to assess PK, safety and tolerability apply during the study. For the single 
doses of verinurad, allopurinol, cyclosporine and rifampicin planned to be given during this 
study, no safety issues are expected. 
For timing of assessments refer to Table 3-1. 
6.2. 
Enrolment and Screening Procedures 
There will be 12-lead ECG, measurement of blood pressure, pulse rate and tympanic 
temperature, clinical laboratory evaluations, and a physical examination during the Screening 
Visit. Viral serology and urine drugs of abuse, alcohol and cotinine will be assessed for 
eligibility. Follicle-stimulating hormone (females only) and use of concomitant medication 
will also be assessed and reported. 
6.3. 
Safety and Eligibility Measurements 
Safety and tolerability variables will include: 
• 
Adverse events 
• 
Laboratory assessments (haematology, clinical chemistry and urinalysis). 
• 
Physical examination 
• 
12-lead ECG 
• 
Vital signs (systolic and diastolic blood pressure, pulse rate and tympanic temperature) 
 
6.3.1. 
Adverse Events 
6.3.1.1. 
Definition of Adverse Events 
An AE is the development of any untoward medical occurrence in a subject or clinical study 
subject administered a medicinal product and which does not necessarily have a causal 
relationship with this treatment. An AE can therefore be any unfavorable and unintended sign 
(eg an abnormal laboratory finding), symptom (for example nausea, chest pain), or disease 
temporally associated with the use of a medicinal product, whether or not considered related 
to the medicinal product. 
The term AE is used to include both serious and non-serious AEs and can include a 
deterioration of a pre-existing medical occurrence. An AE may occur at any time, including 
run-in or washout periods, even if no IMP has been administered. 


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6.3.1.2. 
Definitions of Serious Adverse Event 
A SAE is an AE occurring during any study phase (i.e., run-in, treatment, washout, 
follow-up), that fulfills 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 or incapacity or substantial disruption of the 
ability to conduct normal life functions 
• 
Is a congenital abnormality or birth defect 
• 
Is an important medical event that may jeopardize the subject or may require medical 
intervention to prevent one of the outcomes listed above. 
 
Adverse events for malignant tumours reported during a study should generally be assessed as 
Serious AEs. If no other seriousness criteria apply, the ‘Important Medical Event’ criterion 
should be used. In certain situations, however, medical judgement on an individual event basis 
should be applied to clarify that the malignant tumour event should be assessed and reported 
as a Non-Serious AE. For example, if the tumour is included as medical history and 
progression occurs during the study, but the progression does not change treatment and/or 
prognosis of the malignant tumour, the AE may not fulfil the attributes for being assessed as 
Serious, although reporting of the progression of the malignant tumour as an AE is valid and 
should occur. Also, some types of malignant tumours, which do not spread remotely after a 
routine treatment that does not require hospitalization, may be assessed as Non-Serious; 
examples include Stage 1 basal cell carcinoma and Stage 1A1 cervical cancer removed via 
cone biopsy. 
For further guidance on the definition of a SAE, see Appendix A of this CSP. 
6.3.1.3. 
Other Significant Adverse Events 
During the evaluation of the AE data, an AstraZeneca medically qualified expert will review 
the list of AEs that were not reported as SAEs. Based on the expert’s judgment, significant 
adverse events of particular clinical importance may, after consultation with the Global Safety 
Physician, be considered OAEs and reported as such in the CSR. A similar review of other 
data from laboratory tests, vital signs, ECGs and other safety assessments will be performed 
for identification of OAEs. 
Examples of these are marked hematological and other laboratory abnormalities, and certain 
events that lead to intervention (other than those already classified as serious), dose reduction 
or significant additional treatment. 


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6.3.1.4. 
Recording of Adverse Events 
Time Period for Collection of Adverse Events 
Adverse events will be collected from first administration of the IMP throughout the treatment 
period up to and including the Follow-up Visit. 
Serious adverse events will be recorded from the time of ICF. 
Confirmed and suspected SARS-CoV-2 infection and COVID-19 will be recorded as adverse 
event. 
Follow-up of Unresolved Adverse Events 
Any AEs that are unresolved at the subject’s last visit in the study are followed up by the 
Investigator for as long as medically indicated, but without further recording in ClinBase™. 
AstraZeneca retains the right to request additional information for any subject with ongoing 
AE(s)/SAE(s) at the end of the study, if judged necessary. 
Variables 
The following variables will be collected for each AE: 
• 
AE diagnosis/description 
• 
The date and time when the AE started and stopped 
• 
Intensity 
• 
Whether the AE is serious or not 
• 
Investigator causality rating against the investigational product (yes or no) 
• 
AE caused subject’s withdrawal from study (yes or no) 
• 
Outcome 
In addition, the following variables will be collected for SAEs: 
• 
Date AE met criteria for serious AE 
• 
Date Investigator became aware of serious AE 
• 
AE is serious due to 
• 
Date of hospitalisation 
• 
Date of discharge 
• 
Probable cause of death 
• 
Date of death 
• 
Autopsy performed 


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• 
Causality assessment in relation to study procedure(s) 
• 
Causality assessment to other medication 
The following intensity ratings will be used: 
1 
 
Mild (awareness of sign or symptom, but easily tolerated) 
2 
 
Moderate (discomfort sufficient to cause interference with normal activities) 
3 
 
Severe (incapacitating, with inability to perform normal activities) 
 
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 6.3.1.2. 
• 
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. On 
the other hand, a stroke that results in only a limited degree of disability may be 
considered a mild stroke but would be an SAE. 
Causality Collection 
The Investigator will assess causal relationship between investigational product 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 investigational product?” 
For SAEs, causal relationship will also be assessed for other medication, any additional drug 
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 A of this CSP. 
Adverse Events Based on Sign and Symptoms 
All AEs spontaneously reported by the subject or reported in response to the open question 
from the study personnel: “Have you had any health problems since you were last asked?”, or 
revealed by observation will be collected and recorded in ClinBase™. 
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. 


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Adverse Events Based on Examinations and Tests 
The results from protocol-mandated laboratory tests, vital signs, ECGs and other safety 
assessments will be summarised in the CSR. 
Deterioration as compared to baseline in protocol-mandated laboratory values, vital signs, 
ECGs and other safety assessments should therefore only be reported as AEs if they fulfill any 
of the SAE criteria, is clinically significant according to the Investigator judgment, or are the 
reason for discontinuation of treatment with the investigational product. 
If deterioration in a laboratory value or vital sign is associated with clinical signs and 
symptoms, the sign or symptom will be reported as an AE and the associated laboratory result 
or vital sign will be considered as additional information. 
Wherever possible the reporting Investigator should use 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-
protocol-mandated parameters should be reported as AE(s). 
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. 
Hy's Law 
Cases where a subject shows elevations in liver biochemistry may require further evaluation 
and occurrences of AST or ALT ≥ 3 x ULN together with total bilirubin ≥ 2 x ULN may need 
to be reported as SAEs. Please refer to Appendix C for further instruction on cases of 
increases in liver biochemistry and evaluation of Hy’s Law. 
6.3.1.5. 
Reporting of Serious Adverse Events  
All SAEs have to be reported, whether or not considered causally related to the investigational 
product, or to the study procedure(s). All SAEs will be recorded in ClinBase™. 
If any SAE occurs in the course of the study, then investigators 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 
the necessary information is provided to the AstraZeneca Patient Safety data entry site 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. 


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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 of any follow-up 
information on a previously reported SAE immediately, or no later than 24 hours of when he 
or she becomes aware of it. 
The reference document for definition of expectedness/listedness is in the IB for the 
AstraZeneca drug. 
6.3.1.6. 
Regulatory Reporting Requirements for SAEs 
Prompt notification by the investigator to the Sponsor of a SAE is essential so that legal 
obligations and ethical responsibilities towards the safety of participants and the safety of a 
study intervention under clinical investigation are met. 
The Sponsor has a legal responsibility to notify both the local regulatory authority and other 
regulatory agencies about the safety of a study intervention under clinical investigation. The 
Sponsor will comply with country-specific regulatory requirements relating to safety reporting 
to the regulatory authority, IEC, and investigators. 
For all studies except those utilizing medical devices investigator safety reports must be 
prepared for SUSAR according to local regulatory requirements and Sponsor policy and 
forwarded to investigators as necessary. 
An investigator who receives an investigator safety report describing a SAE or other specific 
safety information (eg, summary or listing of SAEs) from the Sponsor will review and then 
file it along with the IB or and will notify the IEC, if appropriate according to local 
requirements. 
6.3.2. 
Laboratory Assessments 
6.3.2.1. 
Haematology 
Haematology  
White blood cell (WBC) count 
Neutrophils absolute count  
Red blood cell (RBC) count 
Lymphocytes absolute count  
Hemoglobin (Hb) 
Monocytes absolute count  
Hematocrit (HCT) 
Eosinophils absolute count  
Mean corpuscular volume (MCV) 
Basophils absolute count  
Mean corpuscular hemoglobin (MCH) 
Platelets 
Mean corpuscular hemoglobin concentration (MCHC) 
Reticulocytes absolute count  
 


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6.3.2.2. 
Serum Clinical Chemistry 
Serum Clinical Chemistry 
Sodium 
Alkaline phosphatase (ALP) 
Potassium 
Alanine aminotransferase (ALT) 
Urea 
Aspartate aminotransferase (AST) 
Creatinine 
Gamma glutamyl transpeptidase (GGT) 
Albumin 
Total Bilirubin (TBL) 
Calcium 
Unconjugated bilirubin 
Phosphate 
Cystatin-C 
Glucose(fasting) 
Uric acid 
C-reactive protein (CRP) 
 Follicle-stimulating hormone (FSHa,b) 
Thyroxine (T4a) 
 Thyroid stimulating hormone (TSHa) 
a 
Screening only 
b 
All women 
 
6.3.2.3. 
Genotyping 
Genotyping 
HLA-B*58:01 
 
HLA-B: Human leukocyte antigen B 
 
6.3.2.4. 
Urinalysis 
Urinalysisa 
Glucose 
pH 
Protein 
Potassium 
Blood 
Sodium 
Creatinine 
Lactic Acid 
Aldosterone 
 
a Upon a positive urine test from leucocytes, blood, nitrite or protein, the Investigator may require further urine 
analysis, such as flow cytometry. Results of additional urine analyses will be included in the database. If the 
flow cytometry examination shows a different result than the urine sticks, the urine will be investigated by fully 
automated digital imaging where leukocytes, erythrocytes, casts in urine will be analysed. 
 
6.3.2.5. 
Viral Serology 
Viral Serology 
Human immunodeficiency virus (HIV) I and II 
SARS-CoV-2 antibody assay 
Hepatitis B surface antigen (HBsAg) 
 
Hepatitis C Virus antibody 
 
 


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6.3.2.6. 
SARS-CoV-2 Serology 
SARS-CoV-2 Serology 
SARS-CoV-2 RT-PCR* 
 
* A nasopharyngeal or oropharyngeal swab will be collected 
6.3.2.7. 
Drugs of Abuse, Alcohol and Cotinine 
Drugs of Abuse, Alcohol and Cotinine Testing 
Amphetamine / Ecstasy 
Benzodiazepines 
Ethanol 
Methadone Metabolites 
Cannabinoids 
Barbiturates 
Cocaine 
Phencyclidine 
Opiates  
Urine Creatinine 
Cotinine 
Tricyclic anti depressants (TCA) 
 
6.3.3. 
Physical Examination 
Full 
The complete physical examinations will include an assessment of the general appearance, 
respiratory, cardiovascular, abdomen, skin, head, and neck (including ears, eyes, nose, and 
throat), lymph nodes, thyroid, musculoskeletal and neurological systems. 
Brief (Abbreviated) 
The brief physical examinations will include an assessment of the general appearance, skin, 
abdomen, cardiovascular system and respiratory. 
6.3.4. 
Electrocardiograms 
6.3.4.1. 
Resting 12-lead Electrocardiogram 
At the time points specified in the SoA (Table 3-1), a 10-second 12-lead safety ECG will be 
obtained after 10 minutes supine rest, using the sites’ own ECG machines. 
The Investigator will judge the overall interpretation as normal or abnormal. If abnormal, it 
will be decided whether or not the abnormality is clinically significant and the reason for the 
abnormality will be recorded. 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. 
The date/time and the physician interpretation (normal, abnormal clinically significant, 
abnormal not clinically significant) for the 12-lead safety ECGs will be recorded in the source, 
with any abnormalities specified. The outcome of the overall evaluation is to be recorded as 
normal/abnormal in the electronic source, with any abnormalities specified. 


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The Investigator may add extra 12-lead resting ECG safety assessments if there are any 
abnormal findings or if the Investigator considers it is required for any other safety reason. 
These assessments should be entered as an unscheduled assessment. 
All ECG readings will be digitally stored as source documents. 
6.3.5. 
Vital Signs 
The following variables will be collected after the subject has rested in the supine position for 
at least 5 minutes: 
• 
Systolic blood pressure (mmHg) 
• 
Diastolic blood pressure (mmHg) 
• 
Pulse rate (bpm) 
• 
Temperature (tympanic) 
 
Supine pulse (bpm), temperature (tympanic) and blood pressure (mmHg) will be measured at 
the time points indicated in Table 3-1. Measurement will be performed according to the 
relevant Parexel SOPs, subsequent to at least a 5-minute rest. Systolic and diastolic blood 
pressure will be measured using the same cuff size, appropriate for arm circumference. Body 
temperature will be measured at least once daily on every visit or during in-house stay. 
6.4. 
Pharmacokinetics 
6.4.1. 
Collection of Pharmacokinetic Samples 
6.4.1.1. 
Whole Blood Samples 
Blood samples for the determination of concentrations of verinurad, M1, M8, allopurinol and 
oxypurinol will be collected for each treatment period as specified in the SoA (Table 3-1). 
Samples will be collected, handled, labeled, stored and shipped as detailed in the Laboratory 
Manual. 
Blood samples for the determination of concentrations of cyclosporine and rifampicin will be 
collected for each treatment period as specified in the SoA (Table 3-1). If the concentration 
analysis is done, it will be reported separately from the CSR. 
6.4.2. 
Pharmacokinetic Drug Assays 
Blood samples for determination of verinurad, M1, M8, allopurinol and oxypurinol 
concentrations in plasma will be analysed by Covance Bioanalytical Services on behalf of 
AstraZeneca, using validated assays. 
Full details of the analytical method and analyses performed will be described in a separate 
bioanalytical report. 


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Exploratory blood samples for cyclosporine and rifampicin will be stored by Covance 
Bioanalytical Services on behalf of AstraZeneca until the decision for analysis is made. Full 
details of the analytical method and analyses performed will be described separately to this 
document. 
6.5. 
Pharmacodynamics 
This section is not applicable as there are no pharmacodynamic assessments in this study. 
6.6. 
Pharmacogenetics 
This section is not applicable as there are no pharmacodynamic assessments in this study. 
6.7. 
Biomarkers 
This section is not applicable as there are no biomarker assessments in this study. 
6.8. 
Immunogenicity 
This section is not applicable as there are no immunogenicity assessments in this study. 
6.9. 
Metabolites 
No additional blood samples will be collected for metabolite identification. 
7. 
BIOLOGICAL SAMPLES PROCEDURES 
All biological samples will be collections will be performed by trained staff and in accordance 
with the Clinical Unit’s SOPs. 
7.1. 
Total Blood Volume 
The approximate total amount of blood to be collected from each subject in this study, 
excluding repeat samples, is summarised in Table 7-1. 
Table 7-1 
Total Blood Volume 
 
Volume per Sample 
Number of Samples 
Total 
Haematology 
2.7 mL 
7 
18.9 mL 
Clinical chemistrya 
7.5 mL 
4 
 30.0 mL 
2.6 mL 
3 
7.8 mL 
HLA-B*58:01 allele genotyping 
3.0 mL 
1 
 3.0 mL 
SARS-CoV-2 antibody ELISA 
2.6 mL 
1 
2.6 mL 
PK blood draws for verinurad and 
metabolites 
3.0 mL 
51 
153.0 mL 
PK blood draws for allopurinol 
2.0 mL 
51 
102.0 mL 


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Volume per Sample 
Number of Samples 
Total 
Exploratory PK blood draws for 
cyclosporine 
1.0 mL 
17 
17.0 mL 
Exploratory PK blood draws for 
rifampicin 
1.0 mL 
17 
17.0 mL 
Total 
351.3 mL 
ELISA: Enzyme-linked immunosorbent assay; HLA-B: Human leukocyte antigen B; FSH: Follicle-stimulating 
hormone. 
a When applicable, serology and FSH (females only) analyses will be performed on the sample collected for 
clinical chemistry analyses. 
 
Repeat blood samples may be collected for safety reasons. The maximum volume to be drawn 
from each subject must not exceed 500 mL. 
7.2. 
Handling, Storage and Destruction of Biological Samples 
Samples will be disposed of, on instruction from AstraZeneca, after the CSR has been 
finalised, unless samples are retained for additional or future analyses. 
7.2.1. 
Pharmacokinetic Samples 
Pharmacokinetic samples will be disposed of after the bioanalytical report finalization 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 anonymized by pooling. Additional analyses 
may be conducted on the anonymized, 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 or additional assay development work, if any, will be 
performed alongside the bioanalysis of the test samples. The results from the evaluation, if 
performed, will be reported in a separate Bioanalytical Report. 
7.2.2. 
Pharmacodynamic Samples – Not Applicable 
7.2.3. 
Pharmacogenetic Samples – Not Applicable  
7.3. 
Labeling and Shipment of Biohazard Samples 
Samples will be labeled 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 B of this CSP 
‘IATA 6.2 Guidance Document’. 


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Any samples identified as Infectious Category A materials will not be shipped and no further 
samples will be taken from the subject unless agreed with AstraZeneca and appropriate 
labeling, shipment and containment provisions are approved. 
7.4. 
Chain of Custody of Biological Samples 
A full chain of custody will be maintained for all samples throughout their lifecycle. 
The Investigator will ensure full traceability of collected biological samples from the subjects 
while in storage at the centre until shipment and will keep documentation of receipt of arrival. 
The sample receiver will keep full traceability of samples while in storage and during use, 
until used, disposed of, or until further shipment or disposal (where appropriate) and will keep 
documentation of receipt of arrival. 
Samples retained for further use will be registered in the AstraZeneca biobank system during 
the entire life cycle. 
7.5. 
Withdrawal of Informed Consent for Donated Biological Samples 
If a subject withdraws consent to the use of donated biological samples, the samples will be 
disposed if not already analysed and the action documented. 
As collection of donated biological samples is an integral part of the study then the subject is 
withdrawn from further study participation. 
AstraZeneca ensures the central laboratory(ies) 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 Clinical Unit. 


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8. 
ETHICAL AND REGULATORY REQUIREMENTS 
8.1. 
Ethical Conduct of the Study 
The study will be performed in accordance with ethical principles that have their origin in the 
Declaration of Helsinki (version 1996) and are consistent with ICH GCP and the AstraZeneca 
policy on Bioethics and Human Biological Samples. 
8.2. 
Subject 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. 
All clinical study findings and documents will be regarded as confidential. The Investigator 
and members of his/her research team must not disclose such information without prior 
written approval from the Sponsor. 
The anonymity of participating subjects must be maintained. Subjects will be specified in 
outputs and other documents containing subject data by their subject number, not by name. 
Documents that identify the subject (eg, signed ICF) will be maintained in confidence by the 
Investigator. 
Study data will be stored in accordance with local and global data protection laws. 
8.3. 
Ethics and Regulatory Review 
The study will be submitted to the national regulatory agency (Federal Institute for Drugs and 
Medical Devices [BfArM]) for review and approval, by Parexel in accordance with local 
regulatory procedures. 
The study will be submitted to the IEC for ethical review and approval by the Investigator in 
accordance with local procedures. 
Parexel will provide the IEC and Investigator with safety updates/reports according to local 
requirements, including SUSARs, where relevant. 
AstraZeneca will provide the regulatory authority with safety updates/reports according to 
local requirements, including SUSARs, where relevant. 
Compensation will be reasonable and related to the nature and degree of inconvenience and 
discomfort as a result of participation in the study. Information on how participants will be 
compensated is contained in the ICF. 


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8.4. 
Insurance 
The Sponsor has covered this clinical study by means of an insurance of the clinical study 
according to national requirements. The name and address of the relevant insurance company, 
the certificate of insurance, the policy number and the sum insured are provided in the 
Investigator's Site File. 
8.5. 
Informed Consent 
The subjects shall be informed of the nature, significance, implications and risks of the trial, 
and ICF will be freely given and evidenced in writing, dated and signed, or otherwise marked, 
by the subject as evidence to indicate his/her free ICF, prior to the start of the study. 
The nature of the ICF will comply with the Declaration of Helsinki (version 1996), the current 
requirements of GCP (CPMP/ICH/135/95) and local regulation which ever offers the greater 
subject protection. 
8.6. 
Changes to the Protocol and Informed Consent Form 
Study procedures will not be changed without the mutual agreement of the 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. 
If a protocol amendment requires a change to the ICF the IEC should approve the revised ICF 
before the revised form is used. 
If local regulations require, any administrative change will be communicated to or approved 
by the IEC. 


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9. 
DATA QUALITY ASSURANCE AND DATA MANAGEMENT 
9.1. 
Quality Control and Source Data Verification 
Source data verification will be conducted with due regard to subject confidentiality. 
The Clinical Unit will allow the study monitor and Sponsor representative direct access to all 
study documents, medical files and source documents to enable verification of the study data, 
while maintaining the anonymity of the subject and confidentiality of the data. 
Internal quality control will be performed at all stages of the study by the Clinical Unit. 
9.2. 
Audit/Inspections 
The Clinical Unit facilities and all study data/documentation may be audited/inspected by 
independent auditor/inspector/any representatives of regulatory authorities. The Investigator 
must allow the applicable persons access to all relevant facilities and data/documents. The 
Investigator must be available to discuss any findings/issues. 
If an audit was performed, the audit certificate will be included in the CSR. 
9.3. 
Study Monitoring 
The conduct of the study will be monitored by an independent Parexel monitor to ensure 
compliance with applicable regulatory requirements and GCP. The summary of the 
documentation of the monitoring visits will form part of the study documentation and will be 
archived as such. 
Monitoring visits at site will be limited to a minimum required as deemed appropriate during 
COVID-19 pandemic. 
9.4. 
Data Collection 
The ClinBase™ system is an electronic source data capturing and information management 
system. The system combines all aspects of source data capturing with process control and 
clinical study management. All clinical and laboratory data, except those which are 
paper-based or provided by external vendor, will be collected in ClinBase™. Only 
paper-based data will be subject to data entry. For electronic source data, no data entry will be 
performed. 
The responsible study monitor will check data at the monitoring visits to the Clinical Unit. 
The Investigator will ensure that the data collected are accurate, complete and legible. Data 
will be monitored within ClinBase™ by the study monitor before being exported. Any 
changes made during monitoring will be documented with a full audit trail within ClinBase™. 


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9.4.1. 
Case Report Forms and Source Documents 
All data obtained using paper collection methods during the clinical study will be recorded in 
ClinBase™. All source documents from which ClinBase™ entries are derived should be 
placed in the subject’s personal records. 
The original ClinBase™ entries for each subject will be checked against source documents by 
the study monitor. Instances of missing or uninterpretable data will be discussed with the 
Investigator for resolution. 
9.4.2. 
Access to Source Documents 
During the course of the clinical study, a study monitor will make Clinical Unit visits to 
review protocol compliance, compare ClinBase™ entries and individual subject’s personal 
records, assess IMP accountability and ensure that the clinical study is being conducted 
according to pertinent regulatory requirements. ClinBase™ entries will be verified against 
source documents. The review of medical records will be handled confidentially to ensure 
subject anonymity. 
Checking of the ClinBase™ entries for completeness and clarity and verifying with source 
documents, will be required to monitor the clinical study for compliance with GCP and other 
regulations. Moreover, regulatory authorities of certain countries, IECs may wish to carry out 
source data inspections on-site, and the Sponsor’s clinical quality assurance group may wish 
to carry out audits. Direct access to source data will be required for these inspections and 
audits; they will be carried out giving due consideration to data protection and subject 
confidentiality. The Investigator assures the Sponsor of the necessary support at all times. 
9.5. 
Data Management 
Parexel will utilize standardized and validated procedures and systems to collect, process and 
file the clinical data of this study. Any system used will be compliant with FDA 21 Code of 
Federal Regulations Part 11 requirements. 
A DMP will be prepared to describe the processes and data-flow within the clinical study. 
Timelines, versions for the computer systems and the coding will be defined in the DMP, and 
if applicable, Sponsor specific requests will also be documented within. The DMP will be 
finalised before first dose where possible but before database lock. 
A DVS will be created to outline the validation checks to be performed during the study. The 
DVS must be finalised before data validation. 
After the data has been monitored by the responsible study monitor all data received will be 
reviewed, logged and filed. 


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The raw data intended for further processing will be checked by standard routines or 
according to the DVS and queries will be generated and sent to the Investigator for review and 
resolution. Corrections resulting from these queries will be confirmed on the DCFs. This 
process will be repeated until no further discrepancies are found. The data will then be 
declared as clean. Applicable documentation will be stored in the study files. 
Only trained study staff will have access to the clinical database and every change in data will 
have a full audit trail. 


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10. 
EVALUATION AND CALCULATION OF VARIABLES 
10.1. 
Safety Variables 
10.1.1. 
Adverse Events 
All AEs will be coded using the latest version of the MedDRA vocabulary, and will be listed 
for each subject. 
Adverse events will be assigned to a treatment based on the start date/time of the AE in 
relation to dosing in that treatment period; for tabulation purposes the AE will then be 
assigned to the treatment received in the respective treatment period as follows: 
• 
Treatment Period 1: AEs with start date/time at the time of or after dosing in Treatment 
Period 1 until the time of dosing in Treatment Period 2. 
• 
Treatment Period 2: AEs with start date/time at the time of or after dosing in Treatment 
Period 2 until the time of dosing in Treatment Period 3. 
• 
Treatment Period 3: AEs with start date/time at the time of or after dosing in Treatment 
Period 3 until the Follow-up Visit, 
 
Adverse events with missing start dates/times will be handled as follows: 
• 
Adverse events with unknown start times, but with start date known, will be imputed with 
a time of 00:00, unless the start date corresponds to any given dosing date. In this case the 
start time will be imputed with the time of dosing. If this results in a start date/time after 
end date/time of the AE, then the time will also be imputed with 00:00. 
• 
Adverse events with completely unknown start dates will be imputed with the date and 
time of dosing, unless the end date is known and prior to dosing; in that case the start date 
will be imputed as the date of Screening and a time of 00:00. 
• 
Adverse events with partially known start dates/times will be treated as follows: 
− 
If only the day is missing, then the day will be imputed with the first day of the 
month, unless the month and year in which the AE started is a month and year in 
which IMP was administered, then the day will be imputed with the first day on 
which IMP was administered in that month. If this results in a start date after the end 
date, then the day will be imputed with the first day of the month. 
− 
If only the month is missing and the year is a year in which IMP was administered, 
then the month will be imputed with the first month in which IMP was administered. 
If this results in a start date after the end date of the AE, then the month will be 
imputed with JAN. If the known year part is not a year in which IMP was 
administered, then the month will also be imputed with JAN. 
− 
If both the day and month is missing and the year is a year in which IMP was 
administered, then the day and month will be imputed with the day and month of 
dosing. If this results in a start date after end date, then the day and month will be 


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imputed with 01JAN. If the year is not a year in which IMP was administered, then 
the day and month will also be imputed with 01JAN. 
− 
If only the year is missing, then the year will be imputed with the year of dosing. 
 
For purposes of the AE summaries, the following will apply: 
• 
AEs with unknown intensity will be treated as “severe” for the tabulations. 
• 
AEs with unknown relationship will be treated as “related” for the tabulations. 
• 
AEs with unknown seriousness will be treated as “serious” for the tabulations. 
 
There will be no imputation of AE data for the data listings. All data will be listed as recorded 
in the CRFs. 
Adverse events with onset (start date/time) after dosing in Treatment Period 1, up to and 
including the final Follow-up visit will be summarised by treatment period and overall for all 
subjects, including tabulations by causality and severity (mild, moderate and severe). All 
tabulations will be presented by SOC and Preferred Term (PT). Furthermore, separate listings 
of SAEs, AEs that led to discontinuation (DAEs) and AEs that led to death will be presented. 
Adverse events will be listed by subject and treatment, including the following information: 
verbatim term, SOC, PT and lowest level term, start date/time, end date/time, time from last 
dose, causality, action taken, whether the AE was classified as serious and the outcome. 
All tabulations will include the number and percentage of subjects. In addition, a separate 
tabulation will be presented showing the number of events by treatment and PT. 
Finally, an overview of all AEs will be presented, separately for the number and percentage of 
subjects and the number of events. This will include categories for any AE, AEs with outcome 
of death and SAEs. 
10.1.2. 
Laboratory Assessments 
Haematology and clinical chemistry values will be listed by subject and time point including 
changes from baseline and repeat/unscheduled measurements. Summary tabulations including 
absolute value and changes from baseline will be presented by treatment period and time point 
for the safety analysis set. The baseline for the measurements will be the last assessment 
performed prior to dosing in Treatment Period 1. Changes from baseline will be calculated 
and presented for all post-baseline time points including the Follow-up Visit. Shift tables will 
also be presented. 


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Any laboratory parameters with results from the laboratory given as “< xx” or “>xx” in the 
database will be imputed with the absolute value of the number without the sign (eg, < 2.2 will 
be imputed as 2.2) for the descriptive statistics and changes from baseline. 
The listings will include the following information: test name, date of measurement, reference 
range, result and flags for any measurements that are outside the reference range (eg, 
AstraZeneca, program, or laboratory ranges). Clinical laboratory data will be reported in 
System International units in the CSR. 
Additional listings will be presented for the following: 
• 
Urinalysis (macroscopic and microscopic, if applicable) 
• 
The results of viral serology and the drugs of abuse and alcohol screen will not be listed 
in the CSR. 
 
10.1.3. 
Physical Examination and Body Weight 
The baseline/screening results of the physical examination will be documented in medical 
history for each subject. 
Any new or aggravated clinically relevant abnormal medical physical examination finding 
compared to the baseline assessment will be reported as an AE. 
10.1.4. 
Resting 12-lead Electrocardiogram 
For each subject, 12-Lead ECG results will be listed, including classifications as “Normal”, 
“Abnormal, clinically significant” and “Abnormal not clinically significant”. 
10.1.5. 
Vital Signs 
The results of the vital signs measurements will be listed by subject and time point including 
the date/time of the assessment, changes from baseline and repeat/unscheduled measurements. 
The baseline for vital signs measurements will be last assessment prior to dosing in Treatment 
Period 1. Descriptive statistics will be presented by treatment and time point for both observed 
values and changes from baseline. 
10.2. 
Pharmacokinetic Variables 
Where possible, the following PK parameters will be determined for verinurad, its metabolites 
M1 and M8, allopurinol and oxypurinol using plasma concentrations for Treatment Period 1 
(reference treatment), Treatment Period 2 (test treatment 1) and Treatment Period 3 (test 
treatment 2). 


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10.2.1. 
Plasma Parameters 
Primary PK parameters 
Cmax 
Maximum observed plasma peak concentration 
AUCinf 
Area under plasma concentration-time curve from time zero to infinity 
AUClast 
Area under the plasma concentration-time curve from zero to time of last 
quantifiable concentration 
 
Secondary PK parameters 
AUC(0-24) 
Area under plasma concentration-time curve from zero to 24 hours post-dose 
tmax 
Time to reach peak or maximum observed concentration following drug 
administration 
t½λz  
Half-life associated with terminal slope (λz) of a semi-logarithmic 
concentration-time curve 
λz 
Terminal elimination rate constant 
CL/F 
Apparent total body clearance of drug from plasma after extravascular 
administration (parent drug only) 
MRTinf 
Mean Residence Time of the unchanged drug in the systemic circulation 
Vss/F 
Volume of distribution (apparent) at steady state following extravascular 
administration (parent drug only) 
Vz/F 
Apparent volume of distribution during the terminal phase after extravascular 
administration (parent drug only) 
MRCmax 
Ratio of metabolite Cmax to parent Cmax  
MRAUCinf 
Ratio of metabolite AUCinf to parent AUCinf 
MRAUClast 
Ratio of metabolite AUClast to parent AUClast 
 
Diagnostic PK Parameters 
The following diagnostic parameters for plasma PK analysis will apply: 
tlast 
Time of last observed (quantifiable) concentration 
λz lower 
Lower (earlier) t used for λz determination 
λz upper 
Upper (later) t used for λz determination  
λzN 
Number of data points used for λz determination 
λz span ratio 
Time period over which λz was determined as ratio of t½λz 
Rsq-adj 
Statistical measure of fit for the regression used for λz determination adjusted for 
the number of used data-points (n obs) 
AUCextr 
Extrapolated area under the curve from tlast to infinity, expressed as a percentage 
of AUCinf 


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10.2.2. 
Calculation or Derivation of Pharmacokinetic Parameters 
Pharmacokinetic parameters will be derived from the plasma concentration data for verinurad, 
M1, M8, allopurinol and oxypurinol using non-compartmental methods with Phoenix® 
WinNonlin® Version 8.1, or higher. All descriptive and inferential statistical computations 
will be performed using SAS® Version 9.3, or higher. 
The PK parameters are calculated/estimated according to AZ standards [19]. 
Pharmacokinetic analysis for each analyte will, where data allows, be carried out using actual 
times determined from the PK sampling and dosing times recorded in the database. If actual 
times are missing, nominal times may be used. 
10.3. 
Pharmacodynamic variable(s) – Not Applicable 
10.4. 
Pharmacogenetics – Not Applicable 


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11. 
STATISTICAL METHODS AND SAMPLE SIZE 
DETERMINATION 
11.1. 
Description of the Analysis Sets 
11.1.1. 
Enrolled Set 
The enrolled set will consist of all subjects who were enrolled and assigned to treatment. 
11.1.2. 
Safety Analysis Set 
The safety analysis set will include all subjects who received at least the dose of 
verinurad+allopurinol in Treatment Period 1 and for whom any safety post-dose data are 
available. 
Unless otherwise stated, the safety analysis set will be used for the presentation of all 
demographic and disposition data, as well as all safety analyses. Exposure to IMP will also be 
presented using the safety analysis set. 
11.1.3. 
Pharmacokinetic Analysis Set 
The PK analysis set will include all subjects in the Safety Analysis Set who receive 
verinurad+allopurinol dose and who have at least 1 quantifiable post-dose plasma 
concentration. In case of an important protocol deviation or event, affected PK data will be 
excluded from the descriptive and inferential statistical analyses, but will still be included in 
the study result listings. 
Data for a subject may be excluded from the descriptive and inferential statistical analyses as a 
result of the following: 
• Where a subject experienced vomiting at or before median tmax. 
• Where the pre-dose concentration for an analyte is > 5% of Cmax in a specific PK 
sampling period 
The exclusion of any subjects 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 subjects excluded from the 
PK analysis set will be listed only. Concentration data for subjects excluded from the PK 
analysis set will be presented in the individual figures of concentration versus time plots. 


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11.2. 
Methods of Statistical Analyses 
11.2.1. 
General Principles 
The statistical methodology below describes the statistical analysis as it is foreseen when the 
study is being planned. 
If circumstances should arise during the study rendering the analysis inappropriate, or if in the 
meantime improved methods of analysis should come to light, different analyses may be 
performed. A separate SAP will not be written for the study. Any deviations from the 
statistical methodology defined in this protocol, reasons for such deviations and all 
alternative/additional statistical analyses that may be performed will be described in the CSR. 
Such changes to analyses may be written into an abbreviated SAP, if appropriate. The 
verification and review of all statistical modeling assumptions will be documented 
appropriately. 
All original and derived parameters as well as demographic and disposition data will be listed 
and described using summary statistics. All safety data (scheduled and unscheduled) will be 
presented in the data listings. 
Demographic and baseline data will be summarised overall for all dosed subjects. 
Pharmacokinetic data will be summarised by treatment. Safety and tolerability data will be 
summarised by treatment period, if applicable. 
Frequency counts (number of subjects [n] and percentages) will be made for each qualitative 
variable. Descriptive statistics for safety data (n, mean, SD, median, minimum and maximum) 
will be calculated for each quantitative variable (unless otherwise stated). Descriptive 
statistics will only be presented if n > 3. If no subjects have data at a given time point, then 
only n=0 will be presented. If n < 3, only the n, minimum, and maximum will be presented. If 
n=3, only the n, minimum and maximum will be presented; the other descriptive statistics will 
be left blank. 
The following rules will apply to any repeated safety assessments occurring within each 
treatment period: 
• 
If the repeated measurement of a specific parameter occurs prior to IMP administration 
(Day 1), then the last obtained value prior to dosing will be used in the descriptive 
statistics and in the calculation of changes from baseline; 
• 
If the repeated measurement of a specific parameter occurs after IMP administration 
(Day 1), then the first (non-missing) value after dosing will be used in descriptive 
statistics and in the calculation of changes from baseline. 
 
The planned sequence for measurement of multiple assessments at the same time point is 
described in Section 3.1.1. 


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For safety assessments performed at screening and the follow-up, the following rules will 
apply for any repeated assessments: 
• 
If the repeated assessment occurs at screening the last available value will be used in the 
summary statistics; 
• 
If the repeated assessment occurs at the Follow-up Visit the first non-missing assessment 
will be used in the summary statistics. 
 
All statistical analyses and production of tables, figures and listings will be performed using 
SAS® version 9.3 or later. 
11.2.2. 
Missing Data 
Missing dates and times in the AE data will be handled as described in Section 10.1.1. 
Concentrations that are non-quantifiable (NQ) in the PK data will be handled as described in 
Section 11.2.6. 
There will be no imputations of other missing data. All subjects will be included into the 
safety analyses as far as the data permit. 
11.2.3. 
Subject Characteristics 
An enrollment listing will be presented and include each subject’s full enrolment number and 
the country where the Clinical Unit is located. 
Subjects and/or data excluded from the PK analysis set will be listed including the reason for 
exclusion. Subject disposition will be summarised and will include the following information: 
number of subjects enrolled and dosed, number and percentage of subjects completing each 
ttreatment period of the study and the number and percentage of subjects who were withdrawn 
(including reasons for withdrawal). Disposition data will be presented based on all dosed 
subjects. 
Subject discontinuations will be listed including the date of study exit, duration of treatment 
and reason for discontinuation. A listing of ICF response will also be presented. 
11.2.3.1. 
Demographic and Baseline Data 
Demographic variables (age, gender, race, ethnicity, height, weight and BMI) will be listed by 
subject. Demographic characteristics (age, gender, race and ethnicity) and subject 
characteristics (height, weight and BMI) will be summarised overall. The denominator for 
percentages will be the number of all subjects dosed. 
Medical history data will be listed by subject including visit, description of the 
disease/procedure, MedDRA SOC, MedDRA PT, start date and stop date (or ongoing if 
applicable). 


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11.2.4. 
Prior and Concomitant Medication and Drug Administration 
11.2.4.1. 
Prior and Concomitant Medication 
Prior medications are those that started and stopped prior to the first dose of IMP; all 
medications taken after first dosing are considered as concomitant (including medications that 
started prior to dosing and continued after). Prior medication started within 3 months prior to 
the first dose of IMP will be recorded also in the concomitant medication module of 
ClinBase™. 
Prior and concomitant medication will be listed by subject and will include the following 
information: reported name, preferred term, the route of administration, dose, frequency, start 
date/time, duration and indication. Prior and concomitant medication will be coded according 
to the AstraZeneca dictionary. 
The duration of medication use will be calculated as: 
Duration = end date/time – start date/time + 1 
 
The duration may be presented in hours or days in the listing depending on the applicability to 
the emerging data. For medications with partial or completely missing start date/times and/or 
end date/times, the duration will not be calculated. 
Medications with missing or partial start date/time and/or end date/time such that it is not 
possible to classify as prior or concomitant will be considered as concomitant in the listings. 
11.2.4.2. 
Drug Administration 
Drug administration dates and times will be listed for each subject and treatment period. 
11.2.5. 
Safety and Tolerability 
All safety data (scheduled and unscheduled) will be presented in the data listings. Continuous 
variables will be summarised using descriptive statistics (n, mean, SD, minimum, median, 
maximum) by treatment. Categorical variables will be summarised in frequency tables 
(frequency and proportion) by treatment. The analysis of the safety variables will be based on 
the safety analysis set. 
Adverse events will be summarised by PT and SOC using MedDRA vocabulary. Furthermore, 
listings of SAEs and adverse events that led to withdrawal will be made and the number of 
subjects who had any AE, SAEs, AEs that led to withdrawal, and AEs with severe intensity 
will be summarised. Adverse events that occur before dosing will be reported separately. 
Tabulations and listings of data for vital signs, clinical laboratory tests and ECGs (listings 
only) will be presented. Any new or aggravated clinically relevant abnormal medical physical 
examination finding compared to the baseline assessment will be reported as an AE. Data will 


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be summarised for the observed values at each scheduled assessment, together with the 
corresponding changes from the baseline when baseline is defined. Clinical laboratory data 
will be reported in Système International units in the CSR. 
Out-of-range values for safety laboratory will be flagged in individual listings as well as 
summarised descriptively using agreed standard reference ranges and/or extended reference 
ranges (eg, AZ, program, or laboratory ranges). 
11.2.6. 
Presentation of Pharmacokinetic Data 
A listing of PK blood sample collection times, as well as derived sampling time deviations 
and all reportable concentrations will be presented for verinurad, M1, M8, allopurinol, and 
oxypurinol for all dosed subjects. An additional listing of PK concentrations versus time will 
be presented for those analytes based on the PK analysis set. 
Plasma concentrations will be summarised for the PK analysis set for each time point by 
treatment period for each analyte separately using CSP scheduled times and appropriate 
descriptive statistics. 
Further details on presentation of PK concentration and parameter data will be presented 
according to the most recent version of the AZ CPE TFL standards, that includes applicable 
descriptive statistics, handling of individual concentrations below the LLOQ for listings, 
descriptive statistics and figures, and precision and rounding rules for concentrations and PK 
parameter data. 
Individual concentrations with time deviations of greater than ±10% from the CSP scheduled 
time will be used in the PK analysis but will be flagged for exclusion from the summary tables 
and corresponding figures. 
Individual plasma concentrations versus actual elapsed time after dose will be plotted on both 
the linear and semi-logarithmic scale with the test and reference treatments overlaid on the 
same plot and separate plots for each subject and analyte. Plots will be based on all dosed 
subjects. 
Combined individual plasma concentration versus actual times will be plotted based on the PK 
analysis set on both the linear and semi-logarithmic scale, with all subjects for the same 
treatment overlaid on the same plot and separate plots for each treatment and analyte. 
Gmean (+/- gSD) plasma concentration versus nominal sampling time will be plotted on both 
the linear scale and semi-logarithmic (no gSD presented) with all treatments overlaid on the 
same plot and separate plots for each analyte. Plots will be based on the PK analysis set. Focus 
plots may be provided if there will be no clear distinction among profiles. 


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11.2.7. 
Inferential Analysis of Pharmacokinetic Data 
The PK parameters (Cmax, AUCinf and AUClast) of verinurad, M1, M8, allopurinol and 
oxypurinol will be analysed using an analysis of variance model following a natural 
logarithmic transformation, with fixed effects for treatment and subject. Least-squares 
geometric means, 2-sided 95% confidence intervals, ratios of geometric means together with 
2-sided 90% confidence intervals of test treatment (verinurad+allopurinol+cyclosporine or 
verinurad+allopurinol+rifampicin), and reference treatment (verinurad+allopurinol) will be 
estimated and presented. Descriptive statistics will be presented for PK concentration-time 
data and PK parameters for verinurad, M1, M8, allopurinol and oxypurinol. 
11.2.8. 
Pharmacodynamics – Not Applicable 
11.2.9. 
Pharmacogenetics – Not Applicable 
11.2.10. 
Exploratory Data 
Results from exploratory data will not form part of the CSR and will not be included in the 
tables, figures or listings of this study. 
11.3. 
Protocol Deviations 
Protocol deviations are considered any deviation from the CSP relating to a subject, and 
include the following: 
• 
Inclusion/exclusion criteria deviations 
• 
Dosing deviations (eg, incorrect treatment received, subject was not fasted as per the 
protocol requirements prior to and after dosing) 
• 
Time window deviations for safety and/or PK assessments 
• 
Subjects receiving prohibited concomitant medications 
• 
Other procedural and study conduct deviations recorded by the Clinical Unit on a protocol 
deviation log 
 
The criteria for the assessment and reporting of protocol deviations will be stipulated in a 
separate study specific protocol deviation specification document. This will include a WAD 
which stipulates tolerance windows for safety and PK assessments. Measurements performed 
within these tolerance windows will not be considered as protocol deviations and will not be 
reported. 
All protocol deviations will be discussed at the data review meeting prior to database hard 
lock in order to define the analysis sets for the study. 
Protocol deviations (missing assessments/visits) related to COVID-19 will be listed 
separately. 


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Important protocol deviations will be listed by subject. 
Protocol deviations will be handled in accordance with Parexel SOPs. 
For handling of protocol amendments, see Section 8.6. 
11.4. 
Determination of Sample Size 
The number of subjects is based on the desire to gain adequate information on the primary 
endpoints while exposing as few subjects as possible to study procedures. Interpretation of the 
results will be based on the size of the treatment ratio and associated 90% CI. It is estimated 
that 12 subjects will provide a CI within 1.58 to 2.53 with a probability of 80% if the 
calculated treatment ratio is 2. This is based on an intra-subject CV of 24% for verinurad. 
A total of 14 healthy subjects will be enrolled to ensure at least 12 evaluable subjects at the 
end of the last treatment period. 
 


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12. 
IMPORTANT MEDICAL PROCEDURES TO BE FOLLOWED 
BY THE INVESTIGATOR 
12.1. 
Medical emergencies and AstraZeneca contacts 
In case of medical emergency, the primary contact is the Investigator. The Investigator may 
contact the Sponsor’s Lead Physician. If the Investigator cannot be reached, the site’s staff 
will contact the Investigator’s deputy or may contact Sponsor’s Lead Physician. 
Name 
Role in the Study 
Contact Details 
Thomas Koernicke Principal Investigator 
Parexel Early Phase Clinical Unit Berlin 
 
 
14050 Berlin 
Germany 
 
 
 
 
Sponsor’s Lead Physician 
AstraZeneca R&D Gothenburg 
 
431 83 Mölndal 
Sweden 
 
 
 
 
12.2. 
Pregnancy 
All pregnancies and outcomes of pregnancy should be reported to AstraZeneca except: 
• 
If the pregnancy is discovered before the study patient has received any IMP. 
If a pregnancy is reported, the Investigator should inform the Sponsor within 24 hours of 
learning of the pregnancy. 
Abnormal pregnancy outcomes (eg, spontaneous abortion, fetal death, stillbirth, congenital 
anomalies, ectopic pregnancy) are considered SAEs. 
Please refer to Section 4.2.1 for further details. 
12.2.1. 
Paternal exposure  
Male subjects should refrain from fathering a child during the study and for 3 months after the 
Follow-up Visit. 
PPD
PPD
PPD
PPD
PPD


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In case of pregnancy of the partner of a male patient, 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. 
Please refer to Section 4.2.1.2 for further details. 


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13. 
LEGAL AND ADMINISTRATIVE ASPECTS 
13.1. 
Archiving of Study Documents 
All source documents generated in connection with the study will be retained in the limited 
access file storage area, respecting the privacy and confidentiality of all records that could 
identify the subjects. Direct access is allowed only for authorised people for monitoring and 
auditing purposes. Source documents will be handled, stored and archived according to in 
house procedures. 
The Investigator's Site File will be archived by the CRO for 15 years after completion of the 
study. 
13.2. 
Publication of Study Results 
All of the study information and data collected during the study are confidential and the 
property of AstraZeneca. After completion of the study, AstraZeneca may prepare a joint 
publication with the Investigator. The Investigator must undertake not to submit any data from 
this CSP for publication without prior consent of AstraZeneca at a mutually agreed time. 
Authorship will be determined by mutual agreement and in line with International Committee 
of Medical Journal Editors authorship requirements. 
13.3. 
Clinical Study Report 
An integrated CSR will be prepared in accordance with the standards of the ICH guideline for 
structure and content of clinical study reports (ICH E3). Copies of the CSR will be provided to 
the IEC and the national regulatory authority in accordance with regulatory requirements and 
Parexel SOPs. In the event of premature termination of the study or other conditions specified 
in ICH E3, an abbreviated CSR may be prepared. 


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14. 
REFERENCE LIST 
1 
Verinurad Investigator’s Brochure, Edition 3, dated 11 November 2019. 
2 
European Medicines Agency. Guidance on the Management of clinical trials during the 
COVID-19 (Coronavirus) pandemic, Version 3, dated 28 April 2020. Available from: 
https://ec.europa.eu/health/sites/health/files/files/eudralex/vol-
10/guidanceclinicaltrials_covid19_en.pdf 
3 
Food and Drug Administration; FDA Guidance on conduct of clinical trials of medical 
products during COVID-19 public health emergency, dated March 2020, updated on 16 
April 2020. Available from: https://www.fda.gov/regulatory-information/search-fda-
guidance-documents/fda-guidance-conduct-clinical-trials-medical-products-during-covid-
19-public-health-emergency 
4 
Ambrosy AP, Gheorghiade M, Chioncel O, Mentz RJ, Butler J. Global perspectives in 
hospitalised heart failure: regional and ethnic variation in patient characteristics, 
management, and outcomes. Curr Heart Fail Rep. 2014;11(4):416-27. 
5 
Andrés M, Quintanilla MA, Sivera F, Sánchez-Payá J, Pascual E, Vela P, et al. Silent 
monosodium urate crystal deposits are associated with severe coronary calcification in 
asymptomatic hyperuricemia: an exploratory study. Arthritis Rheumatol 
2016;68(6):1531-39. 
6 
Anker SD, Doehner W, Rauchhaus M, Sharma R, Francis D, Knosalla C, et al. Uric acid 
and survival in chronic heart failure: validation and application in metabolic, functional, 
and hemodynamic staging. Circulation. 2003;107(15):1991-97. 
7 
Martillo MA, Nazzal L, Crittenden DB. The crystallization of monosodium urate. Curr 
Rheumatol Rep. 2014;16(2):400-09. 
8 
Palazzuoli A, Ruocco G, De Vivo O, Nuti R, McCullough PA. Prevalence of 
hyperuricemia in patients with acute heart failure with either reduced or preserved 
ejection fraction. Am J Cardiol. 2017;120(7):1146-50. 
9 
Grayson PC, Kim SY, LaValley M, Choi HK. Hyperuricemia and incident hypertension: 
A systematic review and meta-analysis. Arthritis Care Res. 2011;63(1):102-10. 
10 Leyva F, Anker SD, Godsland IF, Teixeira M, Hellewell PG, Kox WJ, et al. Uric acid in 
chronic heart failure: A marker of chronic inflammation. Eur Heart J. 
1998;19(12):1814-22. 
11 FDA, Clinical Drug Interaction Studies - Cytochrome P450 Enzyme- and Transporter 
Mediated Drug Interactions, Guidance for Industry. 2020 
https://www.fda.gov/regulatory-information/search-fda-guidance-documents/clinical-
drug-interaction-studies-cytochrome-p450-enzyme-and-transporter-mediated-drug-
interactions 


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12 Rebello S, Compain S, Feng A, Hariry S, Dieterich H-A, Jarugula V. Effect of 
Cyclosporine on the Pharmacokinetics of Aliskiren in Healthy Subjects. J Clin Pharm, 
2011;51:1549-1560 
https://accp1.onlinelibrary.wiley.com/doi/epdf/10.1177/0091270010385934 
13 Chang T, Benet LZ, Hebert MF. The effect of water-soluble vitamin E on cyclosporine 
pharmacokinetics in healthy volunteers. Clin Pharmacol Ther. 1996;59:297-303. 
https://ascpt.onlinelibrary.wiley.com/doi/epdf/10.1016/S0009-9236%2896%2980007-5 
14 Yee, K.L., Khalilieh, S.G., Sanchez, R.I. et al. The Effect of Single and Multiple Doses of 
Rifampin on the Pharmacokinetics of Doravirine in Healthy Subjects. Clin Drug Investig 
37, 659–667 (2017) doi:10.1007/s40261-017-0513-4 
https://rd.springer.com/article/10.1007%2Fs40261-017-0513-4 
15 Xu Y et.al. Simulation of clinical drug-drug interactions from hepatocyte CYP3A4 
induction data and its potential utility in trial designs. Drug Metab Dispos. 2011 
Jul;39(7):1139-48.  
16 Summary of Product Characteristics - Allopurinol 300 mg Tablets. Revision date: 
17 December 2018 [cited 25 Oct 2019]. Available from: 
https://www.medicines.org.uk/emc/product/6006/smpc 
17 Summary of Product Characteristics – Cyclosporine Capsules, USP. Revision date: 
September 2009. Available from: 
https://www.accessdata.fda.gov/drugsatfda_docs/label/2009/050715s027,050716s028lbl.p
df 
18 Summary of Product Characteristics – Rifampin Capsules, USP. Revision date: 
November 2010. Available from: 
https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/050420s073,050627s012lbl.p
df 
19 Guideline Pharmacokinetic Evaluations in Clinical studies v3 Feb 2020. 
 


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15. 
APPENDICES 
Appendix A Additional Safety Information 
Further Guidance on the Definition of a Serious Adverse Event 
Life-threatening 
‘Life-threatening’ means that the subject 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 
subject’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 SAE, although the reasons for it 
may be (eg, bronchospasm, laryngeal edema). Hospital admissions and/or surgical operations 
planned before or during a study are not considered AEs if the illness or disease existed before 
the subject 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 judgment 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 subject or may require 
medical intervention to prevent 1 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 
judgment must be used. 
Examples of such events are: 
• 
Angioedema not severe enough to require intubation but requiring intravenous 
hydrocortisone treatment. 
• 
Hepatotoxicity caused by paracetamol/acetaminophen overdose requiring treatment with 
N-acetyl cysteine. 
• 
Intensive treatment in an emergency room or at home for allergic bronchospasm. 
• 
Blood dyscrasias (eg, neutropenia or anemia requiring blood transfusion) or convulsions 
that do not result in hospitalisation. 
• 
Development of drug dependency or drug abuse. 


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A Guide to Interpreting the Causality Question 
The following factors should be considered when deciding if there is a “reasonable 
possibility” that an AE may have been caused by the IMP. 
• 
Time course / Exposure to suspect drug: 
Has the subject 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? 
• 
Dechallenge 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 other etiology such as the underlying disease, 
other drugs, other host or environmental factors. 
• 
Rechallenge experience: 
Did the AE reoccur if the suspected drug was reintroduced after having been stopped? 
Note: AstraZeneca would not normally recommend or support a rechallenge. 
• 
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 recognized 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 judgment. With limited or insufficient information in the 
case, it is likely that the event(s) will be assessed as ‘not related’. 


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Causal relationship in cases where the disease under study has deteriorated due to lack of 
effect should be classified as no reasonable possibility. 


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Appendix B International Airline Transportation Association 6.2 
Guidance Document 
Labeling and Shipment of Biohazard Samples 
International Airline Transportation Association (IATA) classifies biohazardous agents into 
3 categories (http://www.iata.org/whatwedo/cargo/dangerous_goods/infectious_substances.ht
m). 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 for example, Ebola and Lassa 
Fever viruses. Category A pathogens: 
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 for example, hepatitis A, B, C, D and E 
viruses, and 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 Instruction 650. 
 
Exempt refers to 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. 
 
(http://www.iata.org/whatwedo/cargo/dangerous_goods/infectious_substances.htm) 
• 
Biological samples transported in dry ice require additional dangerous goods 
specification for the dry ice content. 
• 
International Airline Transportation Association compliant courier and packaging 
materials should be used for packing and transportation. Packing should be done by an 
IATA certified person, as applicable. 
• 
Samples routinely transported by road or rail are subject 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. 


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Appendix C Actions Required in Cases of Combined Increase of 
Aminotransferase and Total Bilirubin - Hy’s Law 
C 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 subject meets 
potential 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 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 Hy’s Law (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 IMP. 
The Investigator is responsible for recording data pertaining to PHL/HL cases and for 
reporting serious adverse events (SAEs) and AEs according to the outcome of the review and 
assessment in line with standard safety reporting processes. 
C 2 
Definitions 
Potential Hy’s Law 
Aspartate aminotransferase (AST) or alanine aminotransferase (ALT) ≥ 3 x upper limit of 
normal (ULN) together with TBL ≥ 2 x ULN at any point during the study following the start 
of study medication irrespective of an increase in alkaline phosphatase (ALP). 
Hy’s Law 
AST or ALT ≥ 3 x ULN together with TBL ≥ 2 x ULN, where no other reason, other than the 
IMP, can be found to explain the combination of increases, eg, elevated ALP indicating 
cholestasis, viral hepatitis, another drug. 


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For PHL and HL the elevation in transaminases must precede or be coincident with (i.e., on 
the same day) the elevation in TBL, but there is no specified timeframe within which the 
elevations in transaminases and TBL must occur. 
C 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 subject who meets any of the following identification criteria in 
isolation or in combination: 
• 
AST ≥ 3 x ULN 
• 
ALT ≥ 3 x ULN 
• 
TBL ≥ 2 x ULN 
 
The Investigator will without delay review each new laboratory report and if the identification 
criteria are met will: 
• 
Notify the AstraZeneca representative 
• 
Determine whether the subject meets PHL criteria (see Section C 4 below within this 
appendix for definition) by reviewing laboratory reports from all previous visits 
• 
Promptly enter the laboratory data into the laboratory CRF module(s) 
 
 
C 4 
Follow-Up 
C 4.1 
Potential Hy’s Law Criteria not met 
If the subject does not meet PHL criteria the Investigator will: 
• 
Inform the AstraZeneca representative that the subject has not met PHL criteria  
• 
Perform follow-up on subsequent laboratory results according to the guidance provided in 
the CSP 
 
C 4.2 
Potential Hy’s Law Criteria met 
If the subject does meet PHL criteria the Investigator will: 
• 
Notify the AstraZeneca representative who will then inform the central Study Team 
• 
Within 1 day of PHL criteria being met, the Investigator will report the case as an SAE of 
PHL; serious criteria ‘Important medical event’ and causality assessment ‘yes/related’ 
according to CSP process for SAE reporting 
• 
For subjects that met PHL criteria prior to starting IMP, the Investigator is not required to 
submit a PHL SAE unless there is a significant change# in the subject’s condition 


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• 
The Study Physician contacts the Investigator, to provide guidance, discuss and agree an 
approach for the study subjects’ follow-up (including any further laboratory testing) and 
the continuous review of data 
− 
Subsequent to this contact the Investigator will: 
o 
Monitor the subject 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. 
o 
Investigate the etiology of the event and perform diagnostic investigations as 
discussed with the Study Physician. This includes deciding which the tests 
available in the HL laboratory kit should be used (if applicable). 
o 
Complete the 3 liver CRF modules as information becomes available. 
# A ‘significant’ change in the subject’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. 
C 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 
IMP, to ensure timely analysis and reporting to health authorities within 15 calendar days 
from the date the PHL criteria were met. The AstraZeneca Global Clinical Lead or equivalent 
and Global Safety 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 AST or ALT and TBL elevations, 
a determination of whether the alternative explanation is an AE will be made and 
subsequently whether the AE meets any criteria for a SAE: 
• 
If the alternative explanation is not an AE, record the alternative explanation on the 
appropriate CRF module(s) 
• 
If the alternative explanation is an AE/SAE: update the previously submitted PHL SAE 
and AE CRF entries accordingly with the new information (reassessing event term; 
causality and seriousness criteria) following the AstraZeneca standard processes 
 


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If it is agreed that there is no explanation that would explain the AST or ALT and TBL 
elevations other than the IMP: 
• 
Send updated SAE (report term ‘Hy’s Law’) according to AstraZeneca standard processes 
− 
The ‘Medically Important’ seriousness criterion should be used if no other 
seriousness 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 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: 
• 
Provide any further update to the previously submitted SAE of PHL (report term now 
‘Hy’s Law case’), ensuring causality assessment is ‘related to IMP’ and seriousness 
criterion is ‘medically important’, according to CSP 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 CSP 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. 
 
C 6 
Laboratory Tests 
The list below represents the standard, comprehensive list of follow-up tests which are 
recommended but not mandatory when using a central laboratory. For studies using a local 
laboratory, the list may be modified based on clinical judgment. Any test results need to be 
recorded. 
Hy’s Law laboratory kit for central laboratories (18 December 2018) 
Additional standard biochemistry tests 
GGT 
LDH 
Viral hepatitis 
IgM anti-HAV  
IgG anti-HCV 
IgM and IgG anti-HBc 
HCV RNA* 
HBsAg 
IgM anti-HEV 
HBV DNA 
HEV RNA 
Other viral infections 
IgM & IgG anti-CMV 
IgM & IgG anti-HSV 
IgM & IgG anti-EBV 


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Alcoholic hepatitis 
Carbohydrate deficient transferrin (CD-transferrin) 
Autoimmune hepatitis 
Antinuclear antibody (ANA) 
Anti-Liver/Kidney Microsomal Ab (Anti-LKM) 
Anti-Smooth Muscle Ab (ASMA) 
Metabolic diseases 
alpha-1-antitrypsin 
Ceruloplasmin 
Iron 
Ferritin 
Transferrin** 
Transferrin saturation 
* HCV RNA is only tested when anti-HCV is positive or inconclusive 
 
 
 


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Appendix D Actions Required in Cases of a Renal-related Urolithiasis 
Treatment-emergent Adverse Event or a Serum Creatinine 
Elevation 
During the course of the study, the Investigator will remain vigilant for symptoms or signs of 
renal-related events, kidney stone events or changes in renal function. 
Signs and Symptoms Suggestive of Urolithiasis 
After initiation of study medication, if a subject experiences signs or symptoms suggestive of 
nephrolithiasis (eg, flank pain or hematuria), he/she should be evaluated by a physician and 
serum creatinine, blood urea nitrogen, and urinalysis should be measured via central 
laboratory testing (preferred) and/or local laboratory testing, as appropriate, to determine renal 
function. Imaging (intravenous urogram, renal ultrasound, or magnetic resonance imaging) is 
recommended to confirm or exclude any urinary tract calculus. Abnormal results should be 
treated as medically appropriate by the treating physician. All symptoms, testing, and results 
will be documented in source documents and ClinBase™. 
If a subject develops a urinary tract calculus (as confirmed and documented by imaging or 
passage of a stone) at any time during the study, the subject will discontinue study medication 
and be encouraged to remain in the study for continued safety assessments. If the urinary tract 
calculus is passed, it should be collected and submitted to pathology for analysis of chemical 
composition. 
Deterioration of Renal Function 
The Investigator should assess subjects exhibiting elevated serum creatinine carefully to 
determine the most likely cause for the deterioration of renal function. Following a thorough 
assessment, the subject should be managed according to local medical practice. 
Potentially-treatable causes such as volume depletion, hypotension etc., should be corrected 
before following the recommendations given below. 
Serum Creatinine Increase to ≥ 1.5-fold from Baseline 
• 
Assess the subject to identify and manage any potential contributing factor. Correct any 
dehydration and ensure the subject is well hydrated prior any future evaluation. 
• 
Contact the Sponsor’s lead physician for advice and to discuss discontinuation of study 
medication. 
• 
Assess creatinine daily if the elevation is detected while the subject is admitted to the 
Clinical Unit, and otherwise weekly. 
• 
Subsequent management will depend on the repeat measurement(s): 
1. If serum creatinine < 1.5-fold of baseline value for 2 successive measurements, the 
subject may restart/continue with study treatment on the original study visit schedule. 


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2. If repeat serum creatinine is ≥ 1.5-fold of baseline, the subject should be evaluated 
every week until normalization. The treatment should be permanently discontinued. 
REFERENCES 
Aithal GP, Watkins PB, Andrade RJ, et al. Case definition and phenotype standardization in 
drug‐induced liver injury. Clinical Pharmacology & Therapeutics 2011;89(6):806–15. 
FDA Guidance for Industry (issued July 2009) ‘Drug-induced liver injury: Premarketing 
clinical evaluation’