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Sotatercept for Pulmonary Arterial Hypertension (ZENITH Trial)

Phase 3
Waitlist Available
Research Sponsored by Acceleron Pharma Inc.
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Right heart catheterization documenting minimum pulmonary vascular resistance (PVR) of ≥5 Wood units and a pulmonary capillary wedge pressure (PCWP) or left ventricular end-diastolic pressure (LVEDP) of ≤15 mmHg
Male participants must agree to use a condom and refrain from donating blood or sperm
Timeline
Screening 3 weeks
Treatment Varies
Follow Up up to approximately 43 months
Awards & highlights

ZENITH Trial Summary

This trial is testing a new drug to see if it can help people with a certain kind of heart problem.

Who is the study for?
This trial is for adults with severe Pulmonary Arterial Hypertension (WHO FC III or IV) who are at high risk of mortality. They must be on stable PAH medication, not pregnant, and willing to use contraception. Exclusions include certain heart conditions, recent strokes, liver issues, untreated sleep apnea, and previous reactions to sotatercept.Check my eligibility
What is being tested?
The study tests if Sotatercept can extend the time before patients with severe PAH experience death, lung transplantation or hospitalization due to worsening PAH compared to a placebo. Both groups will continue their current PAH treatments alongside the trial intervention.See study design
What are the potential side effects?
While specific side effects for Sotatercept in this context aren't listed here, similar medications may cause issues like blood pressure changes, blood disorders, potential harm to unborn babies and possible allergic reactions.

ZENITH Trial Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
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My heart test shows high lung blood pressure and normal left heart pressure.
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I am a man and agree to use a condom and not donate blood or sperm.
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My pulmonary arterial hypertension is severe, limiting my physical activity.
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My heart condition is confirmed as WHO Group 1 PAH.

ZENITH Trial Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~up to approximately 43 months
This trial's timeline: 3 weeks for screening, Varies for treatment, and up to approximately 43 months for reporting.

Treatment Details

Study Objectives

Outcome measures can provide a clearer picture of what you can expect from a treatment.
Primary outcome measures
Time to First Confirmed Morbidity or Mortality Event
Secondary outcome measures
Change From Baseline in 6-MWD at Week 24
Change From Baseline in Cardiac Output (CO) at Week 24
Change From Baseline in EuroQoL-5 Dimensions Scale 5 Levels (EQ-5D-5L) Index Score at Week 24
+9 more

Side effects data

From 2022 Phase 3 trial • 324 Patients • NCT04576988
20%
Headache
15%
COVID-19
12%
Diarrhoea
12%
Epistaxis
10%
Telangiectasia
10%
Nausea
10%
Fatigue
10%
Dizziness
7%
Injection site pain
6%
Hypokalaemia
6%
Rash
6%
Flushing
5%
Oedema peripheral
5%
Thrombocytopenia
4%
Nasopharyngitis
3%
Urinary tract infection
2%
Dyspnoea
1%
Inguinal hernia
1%
Atrial flutter
1%
Pulmonary arterial hypertension
1%
Iron deficiency
1%
Bronchitis
1%
Fall
1%
Supraventricular tachycardia
1%
Abdominal pain
1%
Pancreatitis
1%
Cellulitis
1%
Pneumonia
1%
Pneumonia influenzal
1%
Respiratory tract infection
1%
Sepsis
1%
Upper respiratory tract infection
1%
Osteoporotic fracture
1%
Acute kidney injury
1%
Haemoptysis
1%
Pulmonary artery aneurysm
1%
Upper gastrointestinal haemorrhage
1%
Joint injury
1%
Sjogren's syndrome
1%
Cerebral haematoma
1%
Device malfunction
1%
Nephritis
1%
Sarcoidosis
1%
Gastroenteritis viral
100%
80%
60%
40%
20%
0%
Study treatment Arm
Placebo Plus Background PAH Therapy (DBPC Period)
Sotatercept Plus Background PAH Therapy (DBPC Period)
Sotatercept Plus Background PAH Therapy (LTDB Period)
Placebo Plus Background PAH Therapy (LTDB Period)

ZENITH Trial Design

2Treatment groups
Experimental Treatment
Placebo Group
Group I: Sotatercept plus background PAH therapyExperimental Treatment1 Intervention
Sotatercept at a starting dose of 0.3 mg/kg, with a target dose of 0.7 mg/kg, SC every 21 days plus background PAH therapy
Group II: Placebo plus background PAH therapyPlacebo Group1 Intervention
Placebo administered subcutaneously (SC) every 21 days plus background PAH therapy
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Sotatercept
2019
Completed Phase 3
~680

Find a Location

Who is running the clinical trial?

Acceleron Pharma Inc.Lead Sponsor
26 Previous Clinical Trials
2,879 Total Patients Enrolled
5 Trials studying Pulmonary Arterial Hypertension
1,595 Patients Enrolled for Pulmonary Arterial Hypertension
Acceleron Pharma Inc. (a wholly owned subsidiary of Merck Sharp and Dohme, a subsidiary of Merck & Co., Inc.)Lead Sponsor
32 Previous Clinical Trials
4,101 Total Patients Enrolled
5 Trials studying Pulmonary Arterial Hypertension
1,595 Patients Enrolled for Pulmonary Arterial Hypertension
Acceleron Pharma, Inc., a wholly-owned subsidiary of Merck & Co., Inc., Rahway, NJ USALead Sponsor
32 Previous Clinical Trials
4,101 Total Patients Enrolled
5 Trials studying Pulmonary Arterial Hypertension
1,595 Patients Enrolled for Pulmonary Arterial Hypertension

Media Library

Placebo (Other) Clinical Trial Eligibility Overview. Trial Name: NCT04896008 — Phase 3
Pulmonary Arterial Hypertension Research Study Groups: Placebo plus background PAH therapy, Sotatercept plus background PAH therapy
Pulmonary Arterial Hypertension Clinical Trial 2023: Placebo Highlights & Side Effects. Trial Name: NCT04896008 — Phase 3
Placebo (Other) 2023 Treatment Timeline for Medical Study. Trial Name: NCT04896008 — Phase 3
Pulmonary Arterial Hypertension Patient Testimony for trial: Trial Name: NCT04896008 — Phase 3
~55 spots leftby Sep 2025