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Clinical study to investigate the effects of anti-CD20 monoclonal antibody (Rituximab) in patients with refractory pulmonary arterial hypertension associated with connective tissue disease

Clinical study to investigate the effects of anti-CD20 monoclonal antibody (Rituximab) in patients with refractory pulmonary arterial hypertension associated with connective tissue disease - Clinical study to investigate the effects of anti-CD20 monoclonal antibody (Rituximab) in patients with refractory pulmonary arterial hypertension associated with connective tissue disease

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000016320
Enrollment
6
Registered
2015-01-24
Start date
2014-09-18
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 arterial hypertension associated with connective tissue disease

Interventions

Weekly rituximab (375mg/m2) infusion for 4 weeks

Sponsors

The University of Tokyo Hospital
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1)Patients with mean pulmonary arterial pressure over 25mmHg and pulmonary arterial wedge pressure under 15mmHg by right heart catheterization 2)Patients with connective tissue disease clinically suspected of pulmonary arterial hypertension associated with connective tissue disease 3)Patients with pulmonary arterial hypertension resistant to methylprednisolone pulse therapy (1 g/day for 3 days) associated with high-dose prednisolone, or high-dose oral prednisolone (over 0.8mg/kg) and intravenous cyclophosphamide therapy. Or patients with disease flare after the above therapy

Exclusion criteria

Exclusion criteria: 1)Patients with pulmonary hypertension associated with left heart disease, chronic thromboembolic pulmonary hypertension, respiratory disease, and hypoxia 2)Patients with vasodilators (endothelin receptor antagonists, prostacyclin analogues and phosphodiesterase 5 inhibitors) started, or the dosage of the vasodilators changed within 4 weeks before the trial 3)Patients with malignancies or malignancy history within 5 years 4)Patients with sever liver diseases (AST(GOT) or ALT(GPT) over 100 U/L) 5)Patients with sever kidney diseases (serum creatinine over 3.0 mg/dL) 6)Patients with sever heart diseases 7)Patients with apparent active infectious diseases 8)Patients with hepatitis B virus carrier (patients with positive HBs antibody or HBc antibody should be monitored on their HBV-DNA monthly.(Exclude patients with history of HBV vaccination)) 9)Patients with history of serious infectious diseases

Design outcomes

Primary

MeasureTime frame
Efficacy: Estimated right ventricular systolic pressure (echocardiography) and mean pulmonary arterial pressure (right heart catheterization) Safety: Adverse events and laboratory tests

Countries

Japan

Contacts

Public ContactYukiko Iwasaki

The University of Tokyo Hospital Allergy and Rheumatology

yunyan-todai@umin.ac.jp03-3815-5411

Outcome results

None listed

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