This is the first study in hemodialysis subjects with anemia to evaluate the pharmacokinetics, safety, efficacy, tolerability, and pharmacodynamics of sotatercept (ACE-011)
Part 1: Approximately 8 subjects will be randomized to receive either a single 0.1 mg/kg subcutaneous dose of sotatercept or matching placebo in a 3:1 ratio Part 2: Approximately 8 subjects will be randomized to each of the 3 sequential dose groups (0.3mg/kg or 0.5mg/kg or 0.7 mg/kg) with a 3:1 ratio of sotatercept or placebo (6 subjects in the sotatercept arm and 2 in the placebo arm). A total of 24-36 subjects may be randomized in the 3 dose groups.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
50
Part 1: Sotatercept single dose 0.1mg/kg subcutaneous Part 2: Sotatercept starting dose groups of 0.3mg/kg, 0.5mg/kg or 0.7 mg/kg in a sequential design, dosed subcutaneously every 28 days for up to 8 doses
Placebo
North American Research Institute
Azusa, California, United States
Observed Maximum Concentration (Cmax)
Cmax is a pharmacokinetic parameter defined as the observed maximum concentration of the study drug in the serum and/or blood. Cmax will be estimated from the sotatercept concentration versus time data using noncompartmental method.
Time frame: From first dose up to Day 28
Time to Maximum Concentration (Tmax)
Time to observed maximum concentration (Tmax) is defined as the amount of time in days for a drug to reach the maximum concentration after administration.
Time frame: From first dose up to Day 28
Area Under Curve (AUC)-28 Days
AUC-28 days is defined as area under the concentration-time curve over the first 28-day dosing interval
Time frame: From first dose up to Day 28
AUCinf: Area Under the Concentration-time Curve From Time Zero Extrapolated to Infinity
Area under the concentration-time curve from time zero extrapolated to infinity. Only Part 1 pharmacokinetic evaluable participants were pre-specified to be evaluated in this endpoint.
Time frame: From first dose up to Day 28
Apparent Total Clearance (CL/F)
Apparent Total Clearance (CL/F) is defined as the volume of plasma from which the study drug is completely removed per unit of time. It is equal to the drug dose divided by the area-under-the-curve.
Time frame: From first dose up to Day 28
Apparent Volume of Distribution Based on Terminal Phase (Vz/F)
Apparent volume of distribution based on terminal phase (Vz/F) is defined as the apparent volume in which the current amount of drug in the body must be dispersed in order to give the current plasma concentration. Apparent volume of distribution is important for determining the dose required to produce a desired plasma concentration of the drug.
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
West Glendale Dialysis
Glendale, California, United States
California Institute of Renal Research
La Mesa, California, United States
Academic Medical Center
Los Angeles, California, United States
Academic Medical Research Institute
Los Angeles, California, United States
Nephrology Specialist Medical Group
Orange, California, United States
Pines Clinical Research Inc.
Pembroke Pines, Florida, United States
University of Kentucky
Lexington, Kentucky, United States
Fresenius Medical Care North America MI
Kalamazoo, Michigan, United States
DaVita Clinical Research
Minneapolis, Minnesota, United States
...and 14 more locations
Time frame: From first dose up to Day 28
Terminal Half-Life (t1/2,z)
Terminal plasma half-life (t1/2,z) is the time taken for concentration of the study drug to decrease from its maximum concentration (Cmax) to half of Cmax in the blood plasma.
Time frame: Days 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 15, 22, 29, 43, 57, 85 and 113
The Number of Participants Experiencing Treatment Emergent Adverse Events (TEAEs)
An Adverse Event (AE) is defined as any new untoward medical occurrence or worsening of a pre-existing medical condition in a clinical investigation participant administered study treatment and that does not necessarily have a causal relationship with this treatment.
Time frame: From first dose up to 115 days post last dose
Number of Participants With Hemoglobin > 12g/dL
Number of participants with hemoglobin \> 12g/dL including Hb values obtained after first study drug dose and before any rescue.
Time frame: Pre-dose; Dose 1-Days 1, 8, 15, 22, 29; Doses 2, 3, 4, 5, 6, 7-Days 1, 15, 29; Follow-up Phase Days 225, 253, 281, and 309
Proportion of Participants With Rise in Hemoglobin > 2 g/dL During 4 Week Period
Proportion of participants with rise in hemoglobin (Hb) \> 2 g/dL during a 4-week period including Hb values obtained after first study drug dose and before any rescue.
Time frame: Pre-dose; Dose 1-Days 1, 8, 15, 22, 29; Doses 2, 3, 4, 5, 6, 7-Days 1, 15, 29; Follow-up Phase Days 225, 253, 281, and 309
Blood Pressure Changes From Baseline
Blood pressure was generally recorded on the day of dialysis and represent pre-dialysis values. Baseline is defined as blood pressure measurements recorded on Day 1 of the first dose administered.
Time frame: From pre-dose up to the final visit 112 days after last dose (up to 225 days)
Changes in Follicle Stimulating Hormone (FSH)
The change in follicle stimulating measured at pre-specified timepoints throughout the treatment period.
Time frame: Day 1 (baseline), Day 15, Day 29, and Day 113
Number of Participants With Hemoglobin > 10g/dL
Number of participants with hemoglobin \> 10g/dL including Hb values obtained after first study drug dose and before any rescue. Baseline is defined as hemoglobin measurements recorded on Day 1 of the first dose administered.
Time frame: Pre-dose; Dose 1-Days 1, 8, 15, 22, 29; Doses 2, 3, 4, 5, 6, 7-Days 1, 15, 29; Follow-up Phase Days 225, 253, 281, and 309
Number of Participants With Change From Baseline Hemoglobin ≥ 1g/dL
Number of participants with a change from in hemoglobin values ≥ 1g/dL including Hb values obtained after first study drug dose and before any rescue. Baseline is defined as hemoglobin measurements recorded on Day 1 of the first dose administered.
Time frame: Pre-dose; Dose 1-Days 1, 8, 15, 22, 29; Doses 2, 3, 4, 5, 6, 7-Days 1, 15, 29; Follow-up Phase Days 225, 253, 281, and 309
Number of Participants With Hemoglobin > 10g/dL and Change From Baseline Hemoglobin ≥ 1g/dL
Number of participants with Hemoglobin \> 10g/dL and a change from in hemoglobin values ≥ 1g/dL including Hb values obtained after first study drug dose and before any rescue. Baseline is defined as hemoglobin measurements recorded on Day 1 of the first dose administered.
Time frame: Pre-dose; Dose 1-Days 1, 8, 15, 22, 29; Doses 2, 3, 4, 5, 6, 7-Days 1, 15, 29; Follow-up Phase Days 225, 253, 281, and 309
Length of Time to Rescue Therapy
The length of time in days that participants who were rescued received treatment. When applicable, participants were rescued for anemia. During the rescue, participants discontinued sotatercept and were unblinded to the study treatment. Participants who were rescued continued in the treatment phase of 200 days and a follow-up phase of 112 days after the treatment phase. Rescue is defined as the need for a blood transfusion or Erythropoiesis-stimulating agent (ESA) therapy.
Time frame: From first dose up to blood transfusion or ESA therapy, up to approximately 209 days
Change From Baseline in Hemoglobin Values
Dose Cycle 1 is defined as the first 28 days of treatment for Dose Groups 0.3 mg/kg, 0.5 mg/kg, and 0.7 mg/kg and the first 14 days of treatment for Dose Group 0.7/0.4 mg/kg. End of the Treatment Period is defined as the day before the follow-up phase started. Baseline is defined as hemoglobin measurements recorded on Day 1 of the first dose administered.
Time frame: From first dose up to Day 225