期刊
BLOOD
卷 112, 期 13, 页码 4839-4842出版社
AMER SOC HEMATOLOGY
DOI: 10.1182/blood-2008-04-149948
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Mutations in codon 317 after treatment with imatinib and dasatinib have been reported. We reviewed patients with chronic myeloid leukemia and mutations after tyrosine kinase inhibitor (TKI) therapy. F317L was detected in 20, including 12/99 (12%) with mutation after imatinib failure, and 8/16 (50%) after dasatinib (P = .001). Median follow-up from mutation detection was 25 months. At the time of F317L, 8 patients were in chronic phase (CP), 6 in accelerated phase, and 6 in blast phase. There was no difference in characteristics between patients with or without F317L mutations, or with no mutations. A complete cytogenetic response was acheived in 3 of 6 patients treated with nilotinib, 2 of 2 with imatinib, and 0 of 3 with dasatinib. Survival of patients with F317L was similar to those with other mutations (P = .45). Patients in CP had better outcome, with a 2-year survival of 75%. F317L mutation is resistant to dasatinib but sensitive to other TKIs. The prognosis is dependent mostly on the disease stage. (Blood. 2008;112:4839-4842)
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