To determine the optimal route of administration, dose level, and safety of intravenous and subcutaneous dosing of sotatercept for maintaining hemoglobin levels in subjects who are on hemodialysis.
Who can participate
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. Males or females ≥ 18 years of age.
. Subjects on at least 6 hours of hemodialysis per week, for at least 12 weeks before screening
. Subjects must be on a stable intravenous or subcutaneous dose of Erythropoietin Stimulating Agents (excluding methoxy polyethylene glycol-epoetin beta \[Mircera\]) to maintain hemoglobin.
. A mean predialysis hemoglobin concentration ≥ 10 g/dL (grams per deciliter) to ≤ 12 g/dL (≥ 100 g/L (grams per liter) to ≤ 120 g/L) obtained from three consecutive days.
. Uncontrolled hypertension defined as mean of home systolic blood pressure \> 160 mm Hg (millimeter of mercury) or mean of home diastolic blood pressure \> 90 mm Hg calculated once during the screening period prior to randomization
. Subjects with heart failure
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Area Under the Serum Concentration-Time Curve Over Dosing Interval (AUC14d) (14 Days)
Timeframe: Doses 1-2: predose and postdose at 5 min (IV only) 4 hours, 3, and 7 days after each dose; Doses 3-7: predose, and postdose at 5 min after IV injection after each dose; Final dose: predose and postdose at 5 min (IV only) 4 hours, 3, 7, 14 days after dose
2
Area Under the Serum Concentration- Time Curve Over From Day 1 to Day 28 (AUC28d)
Timeframe: Doses 1-2: predose and postdose at 5 min (IV only) 4 hours, 3, and 7 days after each dose; Doses 3-7: predose, and postdose at 5 min after IV injection after each dose; Final dose: predose and postdose at 5 min (IV only) 4 hours, 3, 7, 14 days after dose
3
Maximum Observed Serum Concentration Obtained From the First Dose (Cmax14d)
Timeframe: Doses 1-2: predose and postdose at 5 min (IV only) 4 hours, 3, and 7 days after each dose; Doses 3-7: predose, and postdose at 5 min after IV injection after each dose; Final dose: predose and postdose at 5 min (IV only) 4 hours, 3, 7, 14 days after dose
4
Maximum Observed Serum Concentration (Cmax28d) Obtained From the Combined First 2 Doses
Timeframe: Doses 1-2: predose and postdose at 5 min (IV only) 4 hours, 3, and 7 days after each dose; Doses 3-7: predose, and postdose at 5 min after IV injection after each dose; Final dose: predose and postdose at 5 min (IV only) 4 hours, 3, 7, 14 days after dose
. History of malignancy (except excised and cured non-melanoma skin cancer, or cervical carcinoma in situ that was surgically ablated more than 5 years ago).
. Anticipated or scheduled living donor renal transplant during the course of the study.
Time to Reach Maximum Observed Serum Concentration (Tmax)
Timeframe: Doses 1-2: pre- and postdose at 5 min (IV only) 4 hrs, 3, and 7 days after each dose; Doses 3-7: pre-, and postdose at 5 min after IV injection after each dose; Final dose: pre- and postdose at 5 min (IV only), 4 hrs, 3, 7, 14, 28, 56, 84, and 112 days
6
Estimate of Terminal Elimination Half-Life in Serum at Final Dose Only (t1/2)
Timeframe: Predose and postdose at 5 min (IV only) 4 hours, 3, 7, 14, 28, 56, 84, and 112 days after the final dose.
7
Lambda (ʎz): Apparent Terminal Rate Constant (at Final Dose Only)
Timeframe: Predose and postdose at 5 min (IV only) 4 hours, 3, 7, 14, 28, 56, 84, and 112 days after the final dose