Avatrombopag plus fostamatinib combination as treatment in patients with multirefractory immune thrombocytopenia
Maria Eva Mingot-Castellano, Jose Maria Bastida, Waleed Ghanima, Elena Ruiz Sainz, Ramiro Nuñez Vazquez, Begoña Pedrote Amador, Laila Abdel-Kader Martín, Dolores Piquer-Monsonis, Mariana Canaro
Hematology Department, Hospital Universitario Virgen del Rocío, Instituto de Biomedicina de Sevilla (IBIS /CSIC), Universidad de Sevilla, Sevilla, Spain
Summary
Immune thrombocytopenia (ITP) refractory to multiple therapies may require a combination of drugs targeting different mechanisms and targets. In this retrospective, multicentre, international study, we report the safety and effectiveness of avatrombopag and fostamatininb in combination administered to 18 patients with multirefractory ITP. Overall, the combination response was achieved in 15 patients (83.3%), with a median time from combination start to best response of 15 days (IQR: 8–35 days). After a median follow-up of 256 days (IQR: 142.8–319), 5 patients relapsed (26.7%), all during tapering or stopping one drug. Adverse events were described in 6 of 18 patients (33%).