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Eltrombopag plus cyclosporine in refractory immune thrombocytopenia: a single-center study.
BACKGROUND: With the development of thrombopoietin receptor agonists, the prognosis of immune thrombocytopenia (ITP) in patients in whom there was a poor response to first-line treatment has greatly improved. However, there are still some patients who are refractory to eltrombopag.
OBJECTIVES: To explore the efficacy and safety of eltrombopag combined with low-dose cyclosporine in the management of patients with refractory ITP.
METHODS: A total of 21 participants with ITP who failed to respond to multiple lines of therapy (including a daily dose of 75 mg of eltrombopag for at least 30 days) treated at The First Affiliated Hospital of Zhejiang Chinese Medical University between January 2018 and August 2022 were included. All enrolled patients subsequently received 50 mg of eltrombopag daily and low-dose cyclosporine (3 mg/kg/d, with an initial target concentration of 75-120 ng/mL). The efficacy and safety of the combined therapies were evaluated.
RESULTS: A total of 76.2% (16/21) of the patients responded to the combination of cyclosporine and eltrombopag, with a median time to response of 14.5 (range, 5-37) days. A complete response (platelet count ≥ 100 × 109 /L) was observed in 81.3% (13/16) of the patients, among whom 1 patient experienced relapse due to self-reduction in eltrombopag. During a median follow-up of 180 days, there were no relapses, and 70% (7/10) of the patients successfully stopped or decreased concomitant ITP medications. One patient had both a catheter-related deep vein thrombosis and a venous cerebral thrombotic event later; no other severe drug-related adverse events were observed.
CONCLUSION: Combining low-dose cyclosporine with eltrombopag may be an effective alternative for multirefractory ITP that is nonresponsive to eltrombopag alone.
OBJECTIVES: To explore the efficacy and safety of eltrombopag combined with low-dose cyclosporine in the management of patients with refractory ITP.
METHODS: A total of 21 participants with ITP who failed to respond to multiple lines of therapy (including a daily dose of 75 mg of eltrombopag for at least 30 days) treated at The First Affiliated Hospital of Zhejiang Chinese Medical University between January 2018 and August 2022 were included. All enrolled patients subsequently received 50 mg of eltrombopag daily and low-dose cyclosporine (3 mg/kg/d, with an initial target concentration of 75-120 ng/mL). The efficacy and safety of the combined therapies were evaluated.
RESULTS: A total of 76.2% (16/21) of the patients responded to the combination of cyclosporine and eltrombopag, with a median time to response of 14.5 (range, 5-37) days. A complete response (platelet count ≥ 100 × 109 /L) was observed in 81.3% (13/16) of the patients, among whom 1 patient experienced relapse due to self-reduction in eltrombopag. During a median follow-up of 180 days, there were no relapses, and 70% (7/10) of the patients successfully stopped or decreased concomitant ITP medications. One patient had both a catheter-related deep vein thrombosis and a venous cerebral thrombotic event later; no other severe drug-related adverse events were observed.
CONCLUSION: Combining low-dose cyclosporine with eltrombopag may be an effective alternative for multirefractory ITP that is nonresponsive to eltrombopag alone.
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