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Woo, Janghee; Choi, Dae Ro; Storer, Barry E; Yeung, Cecilia; Halpern, Anna B; Salit, Rachel B; Sorror, Mohamed L; Woolston, David W; Monahan, Tim; Scott, Bart L; Deeg, H Joachim
Haematologica, 03/2020, Letnik: 105, Številka: 3Journal Article
Chronic myelomonocytic leukemia (CMML) is a heterogeneous group of clonal hematopoietic malignancies with variable clinical and molecular features. We analyzed long-term results of allogeneic hematopoietic cell transplantation in patients with CMML and determined clinical and molecular risk factors associated with outcomes. Data from 129 patients, aged 7-74 (median 55) years, at various stages of the disease and transplanted from related or unrelated donors were analyzed. Using a panel of 75 genes somatic mutations present before hematopoietic cell transplantation were identified In 52 patients. The progression-free survival rate at 10 years was 29%. The major cause of death was relapse (32%), which was significantly associated with adverse cytogenetics (hazard ratio, 3.77; =0.0002), CMML Prognostic Scoring System (hazard ratio, 14.3, =0.01), and MD Anderson prognostic scores (hazard ratio, 9.4; =0.005). Mortality was associated with high-risk cytogenetics (hazard ratio, 1.88; =0.01) and high Hematopoietic Cell Transplantation Comorbidity Index (score ≥4: hazard ratio, 1.99; =0.01). High overall mutation burden (≥10 mutations: hazard ratio, 3.4; =0.02), and ≥4 mutated epigenetic regulatory genes (hazard ratio 5.4; =0.003) were linked to relapse. Unsupervised clustering of the correlation matrix revealed distinct high-risk groups with unique associations of mutations and clinical features. CMML with a high mutation burden appeared to be distinct from high-risk groups defined by complex cytogenetics. New transplant strategies must be developed to target specific disease subgroups, stratified by molecular profiling and clinical risk factors.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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