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  • Title: [Study on efficiency and safety of dasatinib in Chinese patients with chronic myelogenous leukemia who are resistant or intolerant to imatinib].
    Author: Huang XJ, Hu JD, Li JY, Jin J, Meng FY, Shen ZX, Liu T, Wu DP, Wang JM, Wang JX.
    Journal: Zhonghua Xue Ye Xue Za Zhi; 2012 Nov; 33(11):889-95. PubMed ID: 23363742.
    Abstract:
    OBJECTIVE: To evaluate the efficiency and safety of dasatinib in Chinese patients (pts) with chronic myelogenous leukemia (CML) in chronic phase (CP), accelerated-phase (AP) or blast-phase (BP) who are resistant or intolerant to imatinib (IM). METHODS: 119 CML pts received dasatinib 100 mg once daily for pts in CP or 70 mg twice daily for pts in AP/BP. The hematologic/cytogenetic response, progression-free-survival (PFS), overall survival (OS) and adverse effects (AE) of the pts were assessed. RESULTS: 59 pts in CP, 25 in AP and 35 in BP received dasatinib treatment. The median duration of dasatinib treatment were 19.32, 20.99 and 3.22 months respectively. Complete hematologic response (CHR), major cytogenetic response (MCyR) and complete cytogenetic response (CCyR) were achieved by 91.5%, 50.8% and 42.4% of pts in CP respectively. The median times to achieving MCyR was 12.1 weeks. None of the pts in CP achieved MCyR progressed or died till to last follow-up. CHR and major hematologic response (MaHR) were achieved by 52.0% and 84.0% of pts in AP, respectively. The median time to CHR and MaHR were 16.0 and 12.1 weeks, respectively. 10 pts in AP achieved MCyR and 9 of them were CCyR. The median duration of PFS was 25.7 months for pts in AP. For 35 pts in BP, the rates of CHR and MaHR were 17.1% and 31.4% respectively. Both of the median time to CHR and MaHR were 12.1 weeks and median time of duration of MaHR was 11.2 months. 8 pts in BP achieved MCyR and the median time of duration of MCyR was 13.2 months. The median duration of PFS and OS for the pts in BP were 4.3 and 16.7 months respectively. Grade 3-4 of hematologic AEs related to dasatinib were frequent but manageable by dose interruption/reduction or supportive care. 52.5% and 61.0% of pts in CP experienced grade 3-4 of neutropenia and thrombocytopenia. More than 80% pts in AP/BP occurred grade 3-4 cytopenia. The common non-hematologic AEs related to dasatinib were including grade 1-2 pleural effusion, headache, pneumonia and diarrhea. The frequency of non-hematologic AE was higher in pts with AP/BP than in pts with CP. CONCLUSION: Chinese pts with CML resistant or intolerant to IM treated by dasatinib can achieve relatively sustained hematologic and even cytogenetic remission and are well tolerated.
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