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Study identifier: NCT07356778 Synced from ClinicalTrials.gov · July 29, 2026
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A Study of Sotatercept for Patients With Eisenmenger Syndrome or Unrepaired Shunt-Associated Pulmonary Arterial Hypertension Resistant to Vasodilator Therapy

Condition: Eisenmenger Syndrome · Pulmonary Arterial Hypertension of Congenital Heart Disease  ·  Sponsor: Kazuya Hosokawa

PhasePhase 4
Planned participants36
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

What is this study about? This study will test whether adding sotatercept to usual medicines for pulmonary arterial hypertension (PAH) can help adults who have PAH due to unrepaired congenital heart defects (atrial or ventricular septal defect, or patent ductus arteriosus), including Eisenmenger syndrome. These conditions often cause long-standing changes in the lung blood vessels and low oxygen levels. Who can join? About 36 adults (age ≥18 years) in Japan whose PAH has not improved enough with pulmonary vasodilators may join. People with very severe symptoms (WHO class IV) or other serious illnesses will not be enrolled. What will happen if I join? Participants will be randomly assigned (like a coin flip, in a 2:1 ratio) to: Sotatercept + vasodilator-based PAH care, or vasodilator-based PAH care alone. The study lasts 24 weeks. Those who receive sotatercept will have injections every 3 weeks. All participants will have clinic visits and tests at the start, week 12, and week 24, including a 6-minute walk test (how far you can walk in 6 minutes), blood tests, questionnaires, and other heart-lung assessments used in routine PAH care. What are the possible benefits? Sotatercept improved exercise capacity and heart-lung measures in other PAH studies, but people with unrepaired heart defects were not included. This study may or may not help you directly, but it may help doctors learn how to use sotatercept safely in this group. What are the possible risks? Side effects see…

This description comes directly from the study's public registry record.

Talk to the study team

Kazuya Hosokawa, MD, PhD  ·  +81-92-642-5360  ·  hosokawa.kazuya.712@m.kyushu-u.ac.jp

Keimei Yoshida, MD, PhD  ·  yoshida.keimei.713@m.kyushu-u.ac.jp

Always discuss trial participation with your own doctor first.

Locations (10)

Kyushu University HospitalFukuoka, Not Required For This Country, JapanRecruiting
The Second Department of Internal Medicine, University of Occupational and Environmental HealthFukuoka, JapanRecruiting
Division of Cardiovascular Medicine, Kobe University HospitalKobe, JapanRecruiting
Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of MedicineKyoto, JapanRecruiting
Department of Cardiology, Nagoya University HospitalNagoya, JapanRecruiting
Department of Cardiovascular Medicine, Faculty of Medicine, Dentistry and Pharmaceutical Sciences, Okayama UniversityOkayama, JapanRecruiting
Department of Cardiovascular Medicine, Tohoku University Graduate School of MedicineSendai, JapanRecruiting
Department of Cardiology, Keio University School of MedicineTokyo, JapanRecruiting
Department of Cardiovascular Medicine, Kyorin University School of MedicineTokyo, JapanRecruiting
Division of Cardiovascular Medicine, Department of Internal Medicine, Showa University Graduate School of MedicineTokyo, JapanRecruiting

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Source record: clinicaltrials.gov/study/NCT07356778