Safety and Efficacy Study of hAESCs Therapy for aGVHD

"The dose escalation is carried out according to the 3+3 ascending principle, and a total of 3 dose levels are set:~1. Dose Level 1: 1×106 cells/kg;~2. Dose Level 2: 2×106 cells/kg;~3. Dose Level 3: 3×106 cells/kg; Note: In this study, if the maximum tolerated dose (MTD) is not explored at dose level 3 (3×106 cells/kg), it will be discussed by the Safety Review Committee (SRC) to decide whether to proceed with further dose escalation or expansion to 6 patients."