Prophylactic Intervention for Relapse Prevention Post-Allogeneic Transplantation in Very High-Risk MDS Patients Based on IPSS-M Stratification: A Single-Arm, Prospective, Single-Center Clinical Study
By collecting interventional clinical data to assess the survival and relapse conditions of patients post-transplantation and comparing them with historical data, the primary study endpoint is the 1-year and 2-year relapse-free survival (RFS) post-transplantation. This includes the time from the start of treatment until the documentation of disease progression (bone marrow smear blast cells \> 5% or extramedullary relapse) or death due to any cause, whichever occurs first. This experiment aims to improve the post-transplant survival rates of MDS patients classified as very high risk under the IPSS-M stratification and to explore pathways to prevent relapse.
• Age between 18 and 70 years, inclusive, both male and female. Diagnosed with MDS according to WHO criteria and classified as very high-risk by IPSS-M scoring. The patient must have a suitable hematopoietic stem cell donor for allogeneic transplantation: Related donors must be at least 5/10 matched for HLA-A, -B, -C, -DQB1, and -DRB1
• Unrelated donors must be at least 8/10 matched for HLA-A, -B, -C, -DQB1, and -DRB1. Hematopoietic Cell Transplantation-Comorbidity Index (HCT-CI) score of ≤ 2. ECOG performance status of 0-2. Adequate liver, kidney, cardiac, and pulmonary functions as follows: Serum creatinine ≤ 1.5× upper limit of normal (ULN)
• Cardiac function: Ejection fraction ≥ 50%
• Baseline oxygen saturation \> 92%
• Total bilirubin ≤ 1.5× ULN
• ALT and AST ≤ 2.0× ULN
• Pulmonary function: DLCO (corrected for hemoglobin) ≥ 40% and FEV1 ≥ 50%. Patients must be capable of understanding and willing to participate in the study, and must sign an informed consent form.