Safety & Efficacy of Peginesatide for the Treatment of Anemia in Participants With Chronic Renal Failure Not on Dialysis

Study Overview
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Brief Summary
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The purpose of this study was to evaluate the safety and efficacy of peginesatide for the treatment of anemia in participants with chronic kidney disease, who are not on dialysis and not on erythropoiesis stimulating agent (ESA) treatment.

Detailed Description
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Anemia associated with chronic kidney disease is due to several factors, primarily the inability of the diseased kidneys to produce adequate amounts of endogenous erythropoietin. Ancillary factors include the shortened lifespan of red blood cells, iron and other nutritional deficiencies, infection, and inflammation. The presence and severity of anemia are related to the duration and extent of kidney failure. Anemia is associated with increased mortality, increased likelihood of hospitalization, reduced cognitive function, and increased left ventricular hypertrophy and heart failure. Erythropoiesis stimulating agents have been established as a treatment for anemia in chronic renal failure subjects, and have improved the management of anemia over alternatives such as transfusion. Peginesatide is a parenteral formulation developed for the treatment of anemia in patients with chronic kidney disease. Peginesatide binds to and activates the human erythropoietin receptor and stimulates erythropoiesis in human red cell precursors in a manner similar to other known erythropoiesis-stimulating agents. Study participants received doses of peginesatide administered once every 4 weeks or darbepoetin alfa administered once every 2 weeks. Total commitment time for this study was a 4 week screening period followed by a minimum of 52 weeks of study treatment. Eligible participants were randomized in equal proportions to two peginesatide treatment regimens and one control, darbepoetin alfa, treatment regimen. To evaluate the cardiovascular safety of peginesatide, a cardiovascular composite safety endpoint (CSE) was defined for use in prospectively planned analyses which combined cardiovascular safety data from the four Phase 3 peginesatide studies (NCT00598273, NCT00597753, NCT00598442, and NCT00597584). The CSE consisted of six events: death, stroke, myocardial infarction, and serious adverse events of congestive heart failure, unstable angina, and arrhythmia. An independent Event Review Committee (ERC) was used to provide blinded adjudication of potential CSE events.

Official Title
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AFX01-11: A Phase 3, Randomized, Active-controlled, Open-label, Multi-center Study of the Safety and Efficacy of Peginesatide for the Correction of Anemia in Patients With Chronic Renal Failure (CRF) Not on Dialysis and Not on Erythropoiesis Stimulating Agent (ESA) Treatment

Conditions
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Chronic Renal Failure, Chronic Kidney Disease, Anemia

Intervention / Treatment
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* Drug: peginesatide
* Drug: peginesatide
* Drug: Darbepoetin alfa


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Chronic renal failure with an estimated glomerular filtration rate < 60 milliliter per minute per 1.73m^2 and not expected to begin dialysis for at least 12 weeks. Two consecutive hemoglobin values ≥ 8.0 g/dL and < 11.0 g/dL within 4 weeks prior to randomization. Exclusion Criteria: Females who are pregnant or breast-feeding. Treatment with an ESA in the 12 weeks prior to randomization. Known intolerance to any ESA, parenteral iron supplementation, or pegylated molecule. Prior chronic hemodialysis or chronic peritoneal dialysis treatment. Known bleeding or coagulation disorder. Known hematologic disease or cause of anemia other than renal disease Poorly controlled hypertension Evidence of active malignancy within one year prior to randomization. A scheduled kidney transplant

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Peginesatide 0.025 mg/kg<br> | Drug: peginesatide<br>* Participants received peginesatide by subcutaneous injection once every 4 weeks. The starting dose was 0.025 milligram per kilogram (mg/kg) and was adjusted throughout the study to maintain a hemoglobin target range of 11.0-12.0 grams per deciliter (g/dL).<br>* Other names: AF37702 Injection;|
| Experimental: Peginesatide 0.04 mg/kg<br> | Drug: peginesatide<br>* Participants received peginesatide by subcutaneous injection once every 4 weeks. The starting dose was 0.04 mg/kg and was adjusted throughout the study to maintain a hemoglobin target range of 11.0-12.0 g/dL.<br>* Other names: AF37702 Injection;|
| Active Comparator: Darbepoetin Alfa<br> | Drug: Darbepoetin alfa<br>* As prescribed, starting dose of 0.75 microgram per kilogram (mcg/kg) administered by subcutaneous injection once every 2 weeks. The dose was adjusted throughout the study to maintain a hemoglobin target range of 11.0-12.0 g/dL.<br>* Other names: Aranesp;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Mean Change in Hemoglobin Between Baseline and the Evaluation Period | The baseline hemoglobin value is defined as the mean of three hemoglobin values: the two most recent hemoglobin values taken prior to the day of randomization and the value obtained on the day of randomization. The mean hemoglobin during the Evaluation Period for each participant is calculated as the mean of the available hemoglobin values during Study Weeks 25 through 36. | Baseline and Weeks 25-36 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Proportion of Participants Who Receive Red Blood Cell (RBC) Transfusions During the Correction and Evaluation Periods |  | Weeks 0 to 36 | 
| Proportion of Participants Achieving Hemoglobin Response During the Correction and Evaluation Periods. | A hemoglobin response is defined as hemoglobin increase of ≥ 1.0 gram per deciliter (g/dL) above baseline and a hemoglobin ≥ 11.0 g/dL without RBC transfusion during the previous 8 weeks. | Weeks 0 to 36 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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CKD, anemia, chronic kidney disease, chronic renal failure, CRF, erythropoietin, EPO, erythropoiesis stimulating agent, ESA, Hematide™, hemoglobin, Hb, Hgb, Omontys, peginesatide, red blood cell, red blood cell production