In the phase I trial, dose escalation of chidamide will be performed at 4 different dosages (15mg, 20mg, 25mg, 30mg) for optimal dosage, which will be determined by efficacy and safety profiles of the patients; afterward, the optimal dosage of chidamide will be combined with VRD regimen, patients will be randomly assigned to chidamide+VRD group or VRD group, and their efficacy and safety will be compared.
In the phase I trial, dose escalation of chidamide will be performed at 4 different dosages (15mg, 20mg, 25mg, 30mg) for optimal dosage, in the phase II trial, the safety and efficacy of chidamide+VRD will be compared with that of VRD regimen.