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Title: Allogeneic Transplantation for Patients With Advanced Myelofibrosis: Splenomegaly and High Serum LDH are Adverse Risk Factors for Successful Engraftment.
Author: Gergis U, Kuriakose E, Shore T, Mayer S, Mark T, Pearse R, Schuster M, Feldman E, Roboz G, Ritchie E, Scandura J, Wang H, Zhou XK, Silver RT, van Besien K.
Journal: Clin Lymphoma Myeloma Leuk; 2016 May; 16(5):297-303. PubMed ID: 27025789.
Abstract:
BACKGROUND: Thirty consecutive patients underwent hematopoietic stem cell transplantation for myelofibrosis (MF) at our institution. The median age at the time of transplant was 49 (range, 18-68) years, 74% of patients had advanced Dynamic International Prognostic Scoring System (DIPSS) scores, and 83% received reduced-intensity conditioning. PATIENTS AND METHODS: With a long follow-up of our patients, we analyzed disease and transplant variables that contributed to engraftment and outcomes. RESULTS: Neutrophil engraftment was achieved in 27 patients (90%) at a median time of 15 (range, 10-44) days, and 19 patients (63%) achieved platelet recovery at a median time of 18 (range, 8-100) days. Splenomegaly was associated with poor neutrophil engraftment (subdistributional hazard ratio [SHR], 0.42; 95% confidence interval [CI], 0.21-0.83; P = .01) and platelet engraftment (SHR, 0.18; 95% CI, 0.07-0.48; P < .001). Increased levels of lactate dehydrogenase (LDH) was associated with poor platelet engraftment (SHR, 0.39; 95% CI, 0.16-0.94; P = .04). The median follow-up for surviving patients was 49 (range, 3-155) months. The 1-year cumulative incidence of nonrelapse mortality (NRM) and relapse were respectively, 57% (95% CI, 29%-76%) and 25% (95% CI, 7%-48%). Increased levels of LDH was associated with high NRM (SHR, 2.82; 95% CI, 1.08-7.35; P = .03). The 4-year overall survival (OS) and relapse-free survival (RFS) were 44% (95% CI, 29%-67%) and 37% (95% CI, 23%-61%), respectively. In the multivariable model, splenomegaly and Eastern Cooperative Oncology Group (ECOG) performance status (PS) > 1 were associated with worse OS (hazard ratio [HR], 5.40; 95% CI, 1.19-24.56); P = .03) and RFS (HR, 3.78; 95% CI, 1.01-14.06; P < .05), respectively. ECOG PS > 1 was also associated with worse RFS (HR, 5.00; 95% CI, 1.31-19.14; P = .02). In this patient group with advanced disease, DIPPS score, Lille score, Janus-Associated Kinase V617F (JAK2 V617F) mutation status, and donor type did not predict transplant outcome. CONCLUSION: We confirm curative potential, but high NRM of allogeneic transplant for advanced MF.

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