P1594: BARICITINIB FOR STEROID-RESISTANT/RELAPSE IMMUNE THROMBOCYTOPENIA (BAITP): AN OPEN-LABEL, SINGLE-ARM, PHASE 2 TRIAL - Peng Zhao; Zhuo-Yu An; Hai-Xia Fu; Hui-Xin Liu; Qiu-Sha Huang; LI-Ping Yang; Qing-Yuan Qu; Jin Wu; Ye-Jun Wu; Yu-Xiu Chen; Meng-Lin LI; Chencong Wang; et al. (HemaSphere, 2023)