Background: Immune thrombocytopenia (ITP) is an autoimmune bleeding disorder. Corticosteroids are first-line therapy, but about one-third of patients relapse or are refractory. Eltrombopag (a TPO-RA) promotes platelet production, yet some patients show no response or relapse upon discontinuation. Telitacicept, a TACI-Fc fusion protein, dual-targets BAFF and APRIL, inhibiting B cell and plasma cell function and reducing autoantibody production, potentially providing synergistic immunomodulatory benefit. Objective: To evaluate the sustained response rate of eltrombopag plus telitacicept vs. eltrombopag alone in patients with steroid-refractory/relapsed ITP. Design: Randomized, open-label, controlled, exploratory Phase II study. 40 patients planned (20 combination, 20 monotherapy). Combination group: eltrombopag + telitacicept . Monotherapy group: eltrombopag alone for 12 weeks. Monotherapy patients with no response after 4 weeks may cross over to the combination group. After 12 weeks, treatment is stopped and patients are followed until Week 24. Primary endpoint: Proportion of patients maintaining platelet count ≥30×10⁹/L with no bleeding at 24 weeks post-treatment. Secondary endpoints include platelet response rates during 12 weeks, safety, bleeding events, etc. Expected results: The combination group is expected to have a significantly higher proportion of patients achieving the primary endpoint without increased adverse events. Population: Age ≥18, diagnosed ITP ≥3 months, baseline platelets \<30×10⁹/L, prior corticosteroid failure. Safety: Monitoring for bleeding, infection, thrombosis, cytopenia, etc., with dose adjustment/cessation as per protocol. Conclusion: This study explores whether dual-targeting (platelet production + autoimmune suppression) with eltrombopag and telitacicept can provide more durable remission for steroid-refractory/relapsed ITP patients.
Age range
18 Years – 80 Years
Sex
ALL
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Sustained Response Comparison
Timeframe: Within 24weeks of first dose