PT-CY With or Without Low-dose ATG for Lymphoid Malignancies Undergoing Allo-HSCT

For patients with high-risk lymphoid malignancies, patients will undergo allo-HSCT from HLA matched sibling, unrelated (9~10/10) donor or hallo-identical donors. For all patients will receive myeloablative conditioning with 5-day fludarabine, 2-day VP-16 and 3-day busulifan. For prophylaxis graft versus host disease (GVHD), patients will receive cyclophosphamide 50mg/kg daily on D+3 and +4 with subsequent tacrolimus starting at D+5. For patients receiving HSCT from unrelated or haplo-donor, low-dose ATG 2.5mg/kg will be given on Day +15.

Inclusion criteria

• patients with lymphoid malignancies: CR1 or CR2 for acute lymphoblastic leukemia; T cell lymphoma (any CR/PR); B cell lymphoma (PR1 or CR2), hodgkin's disease (CR2 or beyond), Sezary syndrome
• patients with HLA matched sibling, unrelated (HLA 9~10/10 matched) or haplo-identical donor

Exclusion criteria

• patients with active infection
• patients with abnormal liver function damage: ALT/AST above 2X normal range
• patients with abnormal renal function damage Scr>160µmol/L;
• patients with insufficient pulmonary function (FEV1，FVC，DLCO<50%）and heart failure or with EF <50%)
• patients with mental instability
• unwilling to give inform consent