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Oscier, David G.; Rose-Zerilli, Matthew J.J.; Winkelmann, Nils; Gonzalez de Castro, David; Gomez, Belen; Forster, Jade; Parker, Helen; Parker, Anton; Gardiner, Anne; Collins, Andrew; Else, Monica; Cross, Nicholas C.P.; Catovsky, Daniel; Strefford, Jonathan C.
Blood, 01/2013, Letnik: 121, Številka: 3Journal Article
NOTCH1 and SF3B1 mutations have been previously reported to have prognostic significance in chronic lymphocytic leukemia but to date they have not been validated in a prospective, controlled clinical trial. We have assessed the impact of these mutations in a cohort of 494 patients treated within the randomized phase 3 United Kingdom Leukaemia Research Fund Chronic Lymphocytic Leukemia 4 (UK LRF CCL4) trial that compared chlorambucil and fludarabine with and without cyclophosphamide in previously untreated patients. We investigated the relationship of mutations in NOTCH1 (exon 34) and SF3B1 (exon 14-16) to treatment response, survival and a panel of established biologic variables. NOTCH1 and SF3B1 mutations were found in 10% and17% of patients, respectively. NOTCH1 mutations correlated with unmutated IGHV genes, trisomy 12, high CD38/ ZAP-70 expression and were associated with reduced overall (median 54.8 vs 74.6 months, P = .02) and progression-free (median 22.0 vs 26.4 months, P = .02) survival. SF3B1 mutations were significantly associated with high CD38 expression and with shorter overall survival (median 54.3 vs 79.0 months, P < .001). Furthermore, multivariate analysis, including baseline clinical variables, treatment, and adverse prognostic factors demonstrated that although TP53 alterations remained the most informative marker of dismal survival in this cohort, NOTCH1 (HR 1.58, P = .03) and SF3B1 (HR 1.52, P = .01) mutations have added independent prognostic value. •This is the first study to validate the importance of NOTCH1 and SF3B1 gene mutations in the context of a randomized, prospective clinical trial.•Mutations in both genes are independent prognostic biomarkers, and therefore have clinical utility in the accurate risk-adapted stratification of CLL patients.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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