Clinical trial NCT03446612: Anemia Study in Chronic Kidney Disease (CKD) : Erythropoiesis Via a Novel Prolyl Hydroxylase Inhibitor (PHI) Daprodustat -Forearm Blood Flow (ASCEND-FBF)
Official title: A Randomized, Repeat Dose, Open Label, Parallel Group, Multi-center Study to Evaluate the Effect of Daprodustat Compared to Darbepoetin Alfa on Forearm Blood Flow in Participants With Anemia of Chronic Kidney Disease That Are Not Dialysis Dependent
Study type: INTERVENTIONAL
Overall status: TERMINATED
Phase: PHASE2
Conditions: Anaemia
Keywords: darbepoetin alpha
challenge agents
daprodustat
FBF-CKD
Lead sponsor: GlaxoSmithKline
Sponsor class: INDUSTRY
First posted: 2018-02-27
Enrollment: 6
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Intervention model description: Participants will be randomized to either daprodustat or darbepoetin alfa. A central randomization approach will be used with stratification by center.
Primary purpose: TREATMENT

Brief summary: Daprodustat has demonstrated an ability to effectively raise hemoglobin concentrations with lower erythropoietin (EPO) levels than those observed after administration of recombinant human erythropoietin (rhEPOs). Therefore, daprodustat has the potential to treat anemia of chronic kidney disease (CKD) with a lower cardiovascular (CV) risk than is observed with the rhEPOs. While the effect of rhEPOs on endothelial function has been assessed, to date the effect of daprodustat or other prolyl hydroxylase inhibitor (PHI) compounds on endothelial function has not. Therefore, the purpose of this study is to compare the effect of daprodustat to darbepoetin alfa on endothelial function by assessing FBF in participants with anemia of CKD by using venous occlusion plethysmography as a means to estimate the potential for daprodustat to have a lower risk of CV events as compared to rhEPO.

This study will use a randomized, repeat dose, open label, parallel group design, in adult, not on-dialysis, male and female participants with anemia of CKD that are currently not treated with rhEPOs.

The study will comprise of three study periods: a screening period starting up to 30 days prior to Day 1, a 42 day (6 week) treatment period, and a follow-up visit up to 14 days later. The total duration of participants involvement is up to 14 weeks (including screening and follow up visit). Approximately 50 participants will be randomized to either daprodustat or darbepoetin alfa.


Eligibility criteria: Inclusion Criteria:

* Participant must be at least 18 years of age inclusive, at the time of signing the informed consent.
* Participants who are Stage 3, 4 or 5 CKD defined by estimated Glomerular Filtration Rate (eGFR) using the CKD Epidemiology Collaboration (CKD-EPI) formula.
* Hemoglobin as measured by HemoCue at screening visit and Day 1 is \<=11.0 grams/deciliter (g/dL) \[\<=110 gram/Litre (g/L)\].
* Palpable brachial artery as assessed at screening.
* Participants, if necessary may be on stable maintenance oral iron supplementation (\<50% change in overall dose and compliance of 80% of prescribed doses in the 4 weeks prior to and including the screening period). If participants have been on intravenous (IV) iron, then participants will not have received IV iron for 4 weeks prior to the Day 1 visit.
* Male or female participants will be included.
* A female participant is eligible to participate if she is not pregnant, not breastfeeding, and at least one of the following conditions applies: Not a woman of childbearing potential (WOCBP) or a WOCBP who has been on an approved form of contraceptive for the 4 weeks prior to Day 1 and agrees to follow the contraceptive guidance until the Follow-up visit.
* Capable of giving signed informed consent.

Exclusion Criteria:

* On dialysis or clinical evidence of impending need to initiate dialysis within 12 weeks of Day 1.
* Planned kidney transplant within 12 weeks of Day 1.
* Presence of an arteriovenous (AV) fistula.
* Recombinant human erythropoietin use within the 12 weeks prior to the screening visit and through Day 1.
* History of severe allergic or anaphylactic reactions or hypersensitivity to the study treatment or challenge agents, or excipients in the study treatments or challenge agents.
* Planned use of any prescription or non-prescription drugs or dietary supplements that are prohibited from screening until all assessments on Day 42 have been successfully completed.
* The participant has participated in a clinical trial and has received an experimental investigational product within the prior 30 days or within 5 half-lives of the investigational product (whichever is longer) prior to screening and through Day 1.
* At or below the lower limit of the reference range at screening for Vitamin B12 (may rescreen in a minimum of 8 weeks).
* Ferritin \<=50 nanograms/milliliter \[\<=50 microgram/liter (µg/L)\] at screening.
* Transferrin saturation (TSAT) \<=15% (0.15) at screening.
* Folate \<2.0 nanogram/milliliter (4.5 nanomoles/liter; may rescreen in a minimum of 8 weeks) at screening.
* High sensitivity C-reactive protein (hs-CRP) \>=50 micrograms/milliliter (\>=50 mg/L) at screening.
* Myocardial infarction or acute coronary syndrome \<=12 weeks prior to screening and through Day 1.
* Hospitalization for greater than 24 hours \<=12 weeks prior to screening and through Day 1.
* Stroke or transient ischemic attack \<=12 weeks prior to screening and through Day 1.
* Class 4 heart failure, as defined by the New York Heart Association (NYHA) functional classification system.
* Resting SBP \>180 millimeters of mercury (mmHg) or DBP \>110 mmHg at screening visit or current uncontrolled hypertension as determined by the investigator.
* QT interval corrected for heart rate using Bazett's formula (QTcB) \>500 milliseconds (msec), or QTcB \>530 msec in participants with bundle branch block. There is no corrected QT (QTc) exclusion for participants with a predominantly ventricular paced rhythm.
* Active chronic inflammatory disease that could impact erythropoiesis.
* History of bone marrow aplasia or pure red cell aplasia.
* Conditions, other than anemia of CKD, which can affect erythropoiesis.
* Evidence of actively bleeding gastric, duodenal, or esophageal ulcer disease or clinically significant gastrointestinal bleeding from \<=8 weeks prior to screening and through Day 1.
* ALT \>2 times upper limit of normal (ULN; screening only).
* Bilirubin \>1.5 times ULN (screening only); Isolated bilirubin \>1.5 times ULN is acceptable if bilirubin is fractionated and direct bilirubin \<35%
* Current or chronic history of liver disease, or known hepatic or biliary abnormalities (with the exception of Gilbert's syndrome or asymptomatic gallstones).
* Major surgery within the 12 weeks prior to screening and through Day 1, or planned during the study.
* Anticipated or planned vascular access surgery (i.e., arteriovenous \[AV\] fistula) within the 12 weeks prior to screening and through the Day 42 assessments.
* Received a tissue heart valve replacement or repair within the 6 months prior to screening or has received a mechanical heart valve replacement.
* Blood transfusion within 6 weeks prior to screening and through Day 1, or an anticipated need for blood transfusion during the study.
* Clinical evidence of an acute infection, or history of infection requiring IV antibiotic therapy from 8 weeks prior to screening and through Day 1. Prophylactic oral antibiotics are allowed.
* History of malignancy within the two years prior to screening and through Day 1 or currently receiving treatment for cancer, with the exception of localized squamous cell or basal cell carcinoma of the skin definitively treated 12 weeks prior to Day 1.
* Platelet count \<50,000/µL (\<50 Giga cells per liter).
* History of a bleeding disorder (e.g., hemophilia).
* Any other condition, clinical or laboratory abnormality, or examination finding that the investigator considers would put the participant at unacceptable risk, which may affect study compliance or prevent understanding of the aims or investigational procedures or possible consequences of the study.

Primary outcomes:
measure: Change in FBF Ratio in Response to Acetylcholine (Day 1 to Day 42)
timeFrame: Day 1 to Day 42
Secondary outcomes:
measure: Change in the Absolute FBF From Day 1 to Day 42 in Response to Acetylcholine
timeFrame: Day 1 to Day 42
measure: Change in FBF Ratio in Response to Sodium Nitroprusside (Day 1 to Day 42)
timeFrame: Day 1 to Day 42
measure: Change in the Absolute FBF From Day 1 to Day 42 in Response to Sodium Nitroprusside
timeFrame: Day 1 to Day 42
measure: Change in FBF Ratio in Response to NG-monomethyl Arginine Acetate (L-NMMA) (Day 1 to Day 42)
timeFrame: Day 1 to Day 42
measure: Change in the Absolute FBF From Day 1 to Day 42 in Response to L-NMMA
timeFrame: Day 1 to Day 42
measure: Change in FBF Ratio in Response to Acetylcholine at Day 42 Versus (vs) Day 1 in Participants Treated With Daprodustat
timeFrame: Day 1 and Day 42
measure: Change in FBF Ratio in Response to Sodium Nitroprusside at Day 42 vs Day 1 in Participants Treated With Daprodustat
timeFrame: Day 1 and Day 42
measure: Change in FBF Ratio in Response to L-NMMA at Day 42 vs Day 1 in Participants Treated With Daprodustat
timeFrame: Day 1 and Day 42
measure: Change in FBF Ratio in Response to Acetylcholine at Day 42 vs Day 1 in Participants Treated With Darbepoetin Alfa
timeFrame: Day 1 and Day 42
measure: Change in FBF Ratio in Response to Sodium Nitroprusside at Day 42 vs Day 1 in Participants Treated With Darbepoetin Alfa
timeFrame: Day 1 and Day 42
measure: Change in FBF Ratio in Response to L-NMMA at Day 42 vs Day 1 in Participants Treated With Darbepoetin Alfa
timeFrame: Day 1 and Day 42
measure: Change in the Absolute FBF in Response to Acetylcholine at Day 42 vs Day 1 in Participants Treated With Daprodustat
timeFrame: Day 1 and Day 42
measure: Change in the Absolute FBF in Response to Sodium Nitroprusside at Day 42 vs Day 1 in Participants Treated With Daprodustat
timeFrame: Day 1 and Day 42
measure: Change in the Absolute FBF in Response to L-NMMA at Day 42 vs Day 1 in Participants Treated With Daprodustat
timeFrame: Day 1 and Day 42
measure: Change in the Absolute FBF in Response to Acetylcholine at Day 42 vs Day 1 in Participants Treated With Darbepoetin Alfa
timeFrame: Day 1 and Day 42
measure: Change in the Absolute FBF in Response to Sodium Nitroprusside at Day 42 vs Day 1 in Participants Treated With Darbepoetin Alfa
timeFrame: Day 1 and Day 42
measure: Change in the Absolute FBF in Response to L-NMMA at Day 42 vs Day 1 in Participants Treated With Darbepoetin Alfa
timeFrame: Day 1 and Day 42
measure: Change in Augmentation Index (AIx) From Day 1 to 42
timeFrame: Day 1 to Day 42
measure: Change in Pulse Wave Velocity (PWV) From Day 1 to Day 42
timeFrame: Day 1 to Day 42
measure: Number of Participants With Any Adverse Events (AEs) and Serious Adverse Events (SAEs)
timeFrame: Up to 59 days
measure: Number of Participants With Any AE of Special Interest (AESI)
timeFrame: Up to 59 days
measure: Number of Participants Discontinuing the Randomized Study Treatment
timeFrame: Up to Day 42
Other outcomes:
measure: Absolute Values of Diastolic Blood Pressure (DBP) and Systolic Blood Pressure (SBP)
timeFrame: Days 1, 14, 28, 42 and 59
measure: Change From Baseline in DBP and SBP
timeFrame: Baseline (Day 1) and at Days 14, 28, 42 and 59
measure: Absolute Values of Electrocardiogram (ECG) Mean Heart Rate
timeFrame: Days 1, 42 and 59
measure: Change From Baseline in ECG Mean Heart Rate
timeFrame: Baseline (Day 1) and at Days 42 and 59
measure: Absolute Values of ECG Parameters- PR Interval, QRS Interval, and QT Interval and QT Interval Corrected for Heart Rate Using Bazett's Formula (QTcB)
timeFrame: Days 1, 42 and 59
measure: Change From Baseline in ECG Parameters- PR Interval, QRS Duration, and QT Interval and QTcB
timeFrame: Baseline (Day 1) and at Days 42 and 59
measure: Absolute Values of the Hematology Parameters of Platelet Count, White Blood Cell (WBC) Count (Absolute), Basophils, Eosinophils, Lymphocytes, Monocytes and Neutrophils
timeFrame: Days 1, 42 and 59
measure: Change From Baseline in Hematology Parameters of Platelet Count, Leukocytes, Basophils, Eosinophils, Lymphocytes, Monocytes and Neutrophils
timeFrame: Baseline (Day 1) and at Days 42 and 59
measure: Absolute Values of the Hematology Parameter of Red Blood Cell (RBC) Count and Reticulocyte Count (RC)
timeFrame: Days 1, 42 and 59
measure: Change From Baseline in Hematology Parameters of RBC Count and RC
timeFrame: Baseline (Day 1) and at Days 42 and 59
measure: Absolute Values of the Hematology Parameters of Hemoglobin and Mean Corpuscle Hemoglobin Concentration (MCHC)
timeFrame: Days 1, 42 and 59
measure: Change From Baseline in Hematology Parameters- Hemoglobin and MCHC
timeFrame: Baseline (Day 1) and at Days 42 and 59
measure: Absolute Values of Hematology Parameter: Hematocrit
timeFrame: Days 1, 42 and 59
measure: Change From Baseline in Hematology Parameter: Hematocrit
timeFrame: Baseline (Day 1) and at Days 42 and 59
measure: Absolute Values of Hematology Parameter of Red Blood Cell Distribution Width (RDW)
timeFrame: Days 1, 42 and 59
measure: Change From Baseline in RDW
timeFrame: Baseline (Day 1) and at Days 42 and 59
measure: Absolute Values of the Hematology Parameter of Mean Corpuscular Hemoglobin (MCH)
timeFrame: Days 1, 42 and 59
measure: Change From Baseline in Hematology Parameter of MCH
timeFrame: Baseline (Day 1) and at Days 42 and 59
measure: Absolute Values of the Hematology Parameter of Mean Corpuscular Volume (MCV)
timeFrame: Days 1, 42 and 59
measure: Change From Baseline in Hematology Parameter of MCV
timeFrame: Baseline (Day 1) and at Days 42 and 59
measure: Absolute Values of Clinical Chemistry Parameters of Sodium, Potassium, Carbon-dioxide (Total), Chloride, Glucose and Urea
timeFrame: Days 1, 42 and 59
measure: Change From Baseline in Clinical Chemistry Parameter: Sodium, Potassium, Carbon-dioxide (Total), Chloride, Glucose and Urea
timeFrame: Baseline (Day 1) and at Days 42 and 59
measure: Absolute Values of Clinical Chemistry Parameters of Creatinine
timeFrame: Days 1, 42 and 59
measure: Change From Baseline in Clinical Chemistry Parameter: Creatinine
timeFrame: Baseline (Day 1) and at Days 42 and 59
measure: Absolute Values of Clinical Chemistry Parameters of Bilirubin (Direct/Indirect and Total)
timeFrame: Days 1, 14, 28, 42 and 59
measure: Change From Baseline in Clinical Chemistry Parameter: Bilirubin (Direct/Indirect and Total)
timeFrame: Baseline (Day 1) and at Days 14, 28, 42 and 59
measure: Absolute Values of Clinical Chemistry Parameters of Alanine Transaminase (ALT), Alkaline Phosphatase (ALP) and Aspartate Transaminase (AST)
timeFrame: Days 1, 14, 28, 42 and 59
measure: Change From Baseline in Clinical Chemistry Parameter: ALT, ALP and AST
timeFrame: Baseline (Day 1) and at Days 14, 28, 42 and 59
measure: Absolute Values of Clinical Chemistry Parameters of Albumin
timeFrame: Days 1, 14, 28, 42 and 59
measure: Change From Baseline in Clinical Chemistry Parameter: Albumin
timeFrame: Baseline (Day 1) and at Days 14, 28, 42 and 59
Locations:
city: Cambridge
country: United Kingdom
facility: GSK Investigational Site
state: Cambridgeshire
city: Edinburgh
country: United Kingdom
facility: GSK Investigational Site
city: London
country: United Kingdom
facility: GSK Investigational Site
Study officials:
affiliation: GlaxoSmithKline
name: GSK Clinical Trials
role: STUDY_DIRECTOR
References:
citation: Natale P, Palmer SC, Jaure A, Hodson EM, Ruospo M, Cooper TE, Hahn D, Saglimbene VM, Craig JC, Strippoli GF. Hypoxia-inducible factor stabilisers for the anaemia of chronic kidney disease. Cochrane Database Syst Rev. 2022 Aug 25;8(8):CD013751. doi: 10.1002/14651858.CD013751.pub2.