Ruxolitinib and Chidamide Intensified Bu/CY Conditioning Regimen

The purpose of this study is to determine the efficacy and safety of Ruxolitinib and Chidamide intensified conditioning regimen in patients with Acute B cell Lymphoblast leukemia Underwenting Haploidenticl Peripheral blood Stem Cell Transplantation.

Haploidenticl Peripheral blood Stem Cell Transplantation should be offered to eligible patients with Acute B cell Lymphoblast leukemia whenever feasible. To further improve the outcome of transplantation patients with Acute B cell Lymphoblast leukemia, we developed a modified Bu/Cy conditioning regimen intensified by Ruxolitinib and Chidamide. In this study, we tested the efficacy and feasibility of the modified Bu/Cy conditioning regimen intensified by Ruxolitinib and Chidamide in patients with Acute B cell Lymphoblast leukemia undergoing allogeneic peripheral blood stem cell transplantation.

Inclusion Criteria: 1. high risk acute B cell lymphoblastic leukemia with the indications for allogeneic transplantation; 2. Have matched sibling donors, ≥8/10 HLA matched unrelated donors or haploidentical donors 3. All patients should aged 12 to 65 years; 4. Liver function: ALT and AST≤2.5 times the upper limit of normal , bilirubin≤2 times the upper limit of normal; 5. Renal function: creatinine ≤the upper limit of normal; 6. Patients without any uncontrolled infections , without organ dysfunction or without severe mental illness; 7. Eastern Cooperative Oncology Group (ECOG) performance status ≤2; 8. Have signed informed consent. Exclusion Criteria: 1. pregnant women; 2. Patients with mental illness or other states unable to comply with the protocol; 3. ALL patients with Ph positive;