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  • Title: [Dose-intensive immunochemotherapy with or without autologous hematopoietic stem cell transplantation in the treatment of 29 newly diagnosed young patients with medium/high risk diffuse large B-cell lymphoma].
    Author: Yi S, Liu W, Lyu R, Li Z, Xu Y, Sui W, Huang W, Wang T, Deng S, Liu H, Fu M, Zou D, Qiu L.
    Journal: Zhonghua Xue Ye Xue Za Zhi; 2014 Jun; 35(6):546-50. PubMed ID: 24985182.
    Abstract:
    OBJECTIVE: To assess the efficacy of dose-intensive immunochemotherapy with or without autologous hematopoietic stem cell transplantation (ASCT) for newly diagnosed young patients with medium/high risk diffuse large B-cell lymphoma (DLBCL). METHODS: The retrospective study was performed in 29 cases of young patients (≤ 60 years) with newly diagnosed DLBCL and an age-adjusted International Prognostic Index (aaIPI) score of 2 or 3. All of them were treated with dose-intensive regimens (DA-EPOCH or Hyper-CVAD/MA) combined with Rituximab and some were consolidated with first-line ASCT. The efficacy and the potential predictors were evaluated. RESULTS: The median age of 29 patients was 43 years old. Of them, 12 patients were consolidated with high-dose chemotherapy and ASCT. The complete remission (CR) rate was 69%, the partial remission (PR) rate 21% and the overall response rate 90%. After a median follow-up of 14 months, the estimated progression-free survival (PFS) and overall survival (OS) at two years were 64% and 70%, respectively. The median PFS and OS were significantly longer in CR patients than that in PR patients (P=0.015 and 0.061, respectively). Two patients achieved PR after induction therapy converted to CR after ASCT and were in continuous CR after follow-up above three years. In multivariate analysis, only bone marrow involvement (BMI) at diagnosis had an adverse influence in PFS (P=0.009), but not in OS. Based on whether there was BMI or not and the extent of BMI at diagnosis, the patients were divided into three groups as BM-0 (without BMI), BM-1 (the extent of BMI ≤ 10%) and BM-2 (the extent of BMI>10%). Patients in BM-2 group had significantly shorter PFS and OS than those in BM-0 and BM-1 groups (P=0.001 and 0.045, respectively). In multivariate analysis, the extent of BMI>10% was the independent poor prognostic factor for PFS and CNS relapse or prognosis. CONCLUSION: Dose-intensive immunochemotherapy followed by ASCT or not has significant effect on efficacy of first-line treatment for young and untreated patients with medium/high risk DLBCL. The extent of BMI>10% at diagnosis is an independent risk factor associated with poor PFS and increased CNS relapse or progression.
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