NCT04993885

Avatrombopag in the Treatment of Adult Immune Thrombocytopenia With Autoantibodies

Efficacy and Safety of Avatrombopag in the Treatment of Adult Immune Thrombocytopenia With Autoantibodies Fail to Eltrombopag or Herombopag Treatment: a Single-center, Prospective, One-arm Clinical Trial

• Status: Recruiting
• Phase: Phase 2
• Study type: Interventional
• Enrollment: 52 (estimated)
• Sponsor: Institute of Hematology & Blood Diseases Hospital, China · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

This prospective, open-label, single-center, one-arm clinical trial aims at evaluating the efficacy and safety of avatrombopag in Chinese adult Immune Thrombocytopenia (ITP) patients with autoantibodies fail (due to intolerance or resistance) to eltrombopag or herombopag treatment.

Detailed description

This prospective, open-label, single-center, one-arm clinical trial aims at evaluating the efficacy and safety of avatrombopag in Chinese adult ITP patients with autoantibodies fail (due to intolerance or resistance) to eltrombopag or herombopag treatment. The subjects include ITP secondary to connective tissue diseases (including but not limited to systemic lupus erythematosus, Sjogren's syndrome and rheumatoid arthritis), primary ITP with positive antinuclear antibody but not up to the diagnostic criteria of connective tissue diseases, primary Evans syndrome, Evans syndrome secondary to connective tissue diseases, and primary ITP with positive Coomb's test but not up to the diagnostic criteria of Evans syndrome. Fifty-two eligible subjects will be enrolled in this study. The dose will be adjusted according to the platelet count during the period from week 1 to week 12.

Conditions

• Immune Thrombocytopenia
• Autoantibodies
• Evan Syndrome
• Connective Tissue Diseases

Interventions

Type	Name	Description
DRUG	Avatrombopag	The subjects will receive avatrombopag treatment with an initial dose of 40mg once a day. Platelet counts will be obtained weekly during the first 4 weeks and then every 2 weeks until week 12 after treatment. The dose adjustment range is 20 mg per week to 40 mg per day to maintain the platelet level between 30×10\^9/L and 200×10\^9/L. If the platelet count does not reach to 30×10\^9/L after taking avatrombopag 40mg once a day for 4 consecutive weeks, the treatment will be stopped.

Timeline

• Start date: 2021-09-01
• Primary completion: 2024-07-31
• Completion: 2025-09-30
• First posted: 2021-08-06
• Last updated: 2025-02-24

Locations

1 site across 1 country: China