Clinical trial Recruiting at 99 sites Phase 3 Interventional Ages 18 to 75

Long-term evaluation of seralutinib for pulmonary arterial hypertension

Official title: An Open-label Extension Study Evaluating the Long-term Safety and Efficacy of Seralutinib Orally Inhaled for the Treatment of Pulmonary Arterial Hypertension (PAH)

Run by Gossamer Bio USA, Inc. · NCT06274801 · Data updated 2026-11-12

This study is testing how well and safely a new inhaled medication called seralutinib works for adults with pulmonary arterial hypertension who have already tried it before.

More Pulmonary Arterial Hypertension trials

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment330 (estimated)
SponsorGossamer Bio USA, Inc.
Industry-sponsored
Drugs / interventionsseralutinib
Locations120 sites (Fresno, California and 119 other locations)
StatusRecruiting
StartedSeptember 3, 2024
Main results expectedDecember 2026
Study endsDecember 2026
Registry record updatedOctober 13, 2026
Trial IDNCT06274801 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults who have completed a prior seralutinib study and meet the eligibility criteria.

Probably not a fit

Patients who have not participated in previous seralutinib studies or do not meet the inclusion criteria may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This open-label extension study aims to assess the long-term safety, tolerability, and efficacy of orally inhaled seralutinib in adults who have previously participated in a seralutinib study. Participants will continue receiving the treatment until seralutinib receives market approval or the study is terminated. The study focuses on individuals with pulmonary arterial hypertension (PAH) to gather additional data on the medication's performance over an extended period.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into the long-term management of pulmonary arterial hypertension with seralutinib.

How similar studies have gone: Other studies involving seralutinib have shown promise, indicating potential for success in this extension study.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Subjects must have completed a qualifying last visit in a prior seralutinib PAH study on investigational product (IP) and in accordance with the protocol.
2. Evidence of an informed consent document, signed and dated by the subject, indicating that the subject has been informed of all pertinent aspects of the study prior to initiation of any subject-mandated procedures.
3. Willingness and ability to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures
4. Women of childbearing potential (WOCBP) must have a negative urine or serum pregnancy test at enrollment visit before first administration of Investigational Product (IP) in this study.
5. WOCBP who are not abstinent and intend to be sexually active with a non-sterilized male partner must be willing to use a highly effective method of contraception from consent through 30 days following the last administration of IP.
6. Male subjects: Non-sterilized male subjects who are not abstinent and intend to be sexually active with a female partner of childbearing potential must use a male condom from consent through 90 days after the last dose of IP.

Exclusion Criteria:

1. Severe acute or chronic medical or laboratory abnormality that may increase the risk associated with study participation or seralutinib administration, unless associated with an ongoing AE and discussed with the Sponsor's medical monitor (MM) (or designee).
2. Have any other condition or reason that, in the opinion of the Investigator, would prohibit the subject from participating in the study.

Where it's running

  • Valley Advanced Lung Diseases Institute
    Fresno, California, United States
    Recruiting
  • Department of Veterans Affairs Greater Los Angeles Healthcare System
    Los Angeles, California, United States
    Recruiting
  • UC Davis Health Medical Center
    Sacramento, California, United States
    Recruiting
  • Stanford Healthcare
    Stanford, California, United States
    Recruiting
  • University of Florida Health
    Gainesville, Florida, United States
    Recruiting
  • Mayo Clinic Jacksonville
    Jacksonville, Florida, United States
    Recruiting
Show 44 more locations
  • Piedmont Physicians Pulmonary & Sleep Medicine of Buckhead
    Atlanta, Georgia, United States
    Recruiting
  • The Emory Clinic
    Atlanta, Georgia, United States
    Recruiting
  • Northside Hospital - Atlanta
    Atlanta, Georgia, United States
    Recruiting
  • UI Health Hospital
    Chicago, Illinois, United States
    Recruiting
  • University of Kansas Medical Center
    Kansas City, Kansas, United States
    Recruiting
  • Norton Pulmonary Specialists
    Louisville, Kentucky, United States
    Recruiting
  • University of Michigan
    Ann Arbor, Michigan, United States
    Recruiting
  • Washington University School of Medicine
    St Louis, Missouri, United States
    Recruiting
  • University of Nebraska Medical Center
    Omaha, Nebraska, United States
    Recruiting
  • NYU Langone Health
    New York, New York, United States
    Recruiting
  • University of Rochester Medical Center
    Rochester, New York, United States
    Recruiting
  • University of Cincinnati Medical Center
    Cincinnati, Ohio, United States
    Recruiting
  • The Hospital of the University of Pennsylvania
    Philadelphia, Pennsylvania, United States
    Recruiting
  • Temple Heart and Vascular Institute (Outpatient Clinic)
    Philadelphia, Pennsylvania, United States
    Recruiting
  • UPMC Presbyterian Hospital
    Pittsburgh, Pennsylvania, United States
    Recruiting
  • Medical University of South Carolina - Nexus Research Center
    Charleston, South Carolina, United States
    Recruiting
  • UT Southwestern Medical Center
    Dallas, Texas, United States
    Recruiting
  • CHI St. Luke's Health Baylor College of Medicine Medical Center
    Houston, Texas, United States
    Recruiting
  • University of Texas Health Science Center at San Antonio
    San Antonio, Texas, United States
    Recruiting
  • Intermountain Medical Center
    Murray, Utah, United States
    Recruiting
  • University of Utah Hospital
    Salt Lake City, Utah, United States
    Recruiting
  • Inova Fairfax Medical Campus
    Falls Church, Virginia, United States
    Recruiting
  • Pulmonary Associates of Richmond, Inc.
    Richmond, Virginia, United States
    Recruiting
  • Cardiologia Palermo
    Buenos Aires, Argentina
    Recruiting
  • Instituto de Cardiologia de Corrientes Juana Francisca Cabral
    Corrientes, Argentina
    Recruiting
  • Instuto de Investigacion Clinicas Quilmes
    Quilmes, Argentina
    Recruiting
  • Instituto Medico Rio Cuarto
    Río Cuarto, Argentina
    Recruiting
  • Hospital Provincial Dr. Jose Maria Cullen
    Santa Fe, Argentina
    Recruiting
  • Pulmonary Hypertension Research Queensland
    Auchenflower, Australia
    Recruiting
  • St Vincent's Hospital (Melbourne)
    Fitzroy, Australia
    Recruiting
  • Royal Hobart Hospital
    Hobart, Australia
    Recruiting
  • University Hospitals of Leuven (Campus Gasthuisberg)
    Leuven, Belgium
    Recruiting
  • Instituto das Pequenas Missionarias de Maria Imaculada - Hospital Madre Teresa
    Belo Horizonte, Brazil
    Recruiting
  • Complexo de Prevencao, Diagnostico, Terapia e Reabilitacao Respiratoria - Hospital Dia di Pulmao
    Blumenau, Brazil
    Recruiting
  • Irmandade da Santa Casa de Misericórdia de Porto Alegre
    Porto Alegre, Brazil
    Recruiting
  • Uniao Brasileira de Educacao e Assistencia Hospital Sao Lucas da PUCRS
    Porto Alegre, Brazil
    Recruiting
  • Instituto do Coracao do Hospital das Clinicas da Faculdade de medicina da Universidade de Sao Paulo
    São Paulo, Brazil
    Recruiting
  • Peter Lougheed Center
    Calgary, Canada
    Recruiting
  • London Health Sciences Centre - Victoria Hospital
    London, Canada
    Recruiting
  • Centro de Investigacion Clinica UC-CICUC
    Santiago, Chile
    Recruiting
  • Enroll SpA
    Santiago, Chile
    Recruiting
  • Fundacion Abood Shaio
    Bogotá, Colombia
    Recruiting
  • Fundacion Neumologica Colombiana
    Bogotá, Colombia
    Recruiting
  • Institut klinicke a experimentalni mediciny Klinika kardiologie Ambulance plicni hypertenze
    Prague, Czechia
    Recruiting

+70 more sites. See ClinicalTrials.gov for the full list.

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.