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Safety and efficacy of ponatinib in PTTM

Safety and efficacy of ponatinib in pulmonary tumor thrombotic microangiopathy

Status
Active, not recruiting
Phases
Early Phase 1
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCTs031210348
Enrollment
5
Registered
2021-09-28
Start date
2022-03-10
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pulmonary tumor thrombtic microangiopathy Pulmonary hypertension, adenocarcinoma

Interventions

Patients will receive 45mg of ponatinib once daily for 2 weeks.
C14.280.832
Tyrosine kinase inhibitor

Sponsors

Sato Kimi
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Patient diagnosed with pulmonary tumor thrombotic microangiopathy (PTTM) -Histological diagnosis of PTTM will be made by presence of the tumor cells within the lumen of pulmonary pre-capillary vessels, with fibrocellular intimal hyperplasia in lung biopsy. -Clinical diagnosis will be made when patient meet either (A)+(B) or (A)+(C) of following criteria. (A) primary pulmonary hypertension. (B) presence of malignant tumor. (C) perfusion defects along the pleural margins on lung perfusion scan. 2) Patient aged 18 years or more. 3) Patient or representative person who received detailed explanation and understands the study well is willing to participate in this study. 4) Hospitalized patient.

Exclusion criteria

Exclusion criteria: 1) Patient who will be considered as inappropriate to participate the study by principal investigator 2) Patient who received tyrosine kinase inhibitors. 3) Patient with fatal or severe adverse event within 24 hours after introduction of extracorporeal membrane oxygenation (ECMO).

Design outcomes

Primary

MeasureTime frame
The primary outcome will be composite endpoint of all cause death and severe vascular occlusive event. We will also evaluate the prevalence of grade 2 or higher adverse event (CTCAE v4) associated with ponatinib.

Secondary

MeasureTime frame
The secondary outcome will be the change from baseline in right heart catheterization parameters (mean pulmonary artery pressure, cardiac output, pulmonary vascular resistance), echocardiographic parameters (tricuspid regurgitant velocity, estimated pulmonary artery pressure, right ventricular size), WHO functional class, vital sign, or laboratory markers (BNP, VEGF, PDGF). We will also evaluate the proportion of successful weaning from ECMO and pharmacokinetics of ponatinib.

Contacts

Public ContactKimi Sato

University of Tsukuba Hospital

kimisato@md.tsukubaa.ac.jp+81-29-853-3143

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026