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 ORIGINAL ARTICLE
Year : 2019  |  Volume : 56  |  Issue : 3  |  Page : 211-215

A prospective, randomized study to compare the combination of imatinib and cytarabine versus imatinib alone in newly diagnosed patients with chronic phase chronic myeloid leukemia


Institute of Hematology and Transfusion Medicine (IHTM), Kolkata, West Bengal, India

Correspondence Address:
Priyanka Samal
Institute of Hematology and Transfusion Medicine (IHTM), Kolkata, West Bengal
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijc.IJC_303_18

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INTRODUCTION: To compare the efficacy and safety of imatinib and cytarabine (ara-c) combination versus imatinib monotherapy in newly diagnosed patients with chronic phase chronic myeloid leukemia (CML-CP). MATERIALS AND METHODS: This prospective, randomized study included adult patients (age >18 years) with newly diagnosed CML-CP. Patients received either a single oral dose of imatinib 400 mg/day in combination with a subcutaneous injection of ara-c 20 mg/m2/day (imatinib + ara-c) or a single oral dose of imatinib 400 mg/day. Primary endpoints were hematological and molecular responses at 3 months and cytogenetic responses at 6 and 12 months. Secondary endpoints included grade 3/4 hematological and nonhematological adverse events (AEs). RESULTS: Of 30 patients included, 14 were randomized to imatinib + ara-c and 16 to imatinib alone. Complete hematologic response (CHR) at 3 months was higher with imatinib + ara-c vs. imatinib alone (100% vs. 87.5%, P = 0.48). The median time to achieve CHR was significantly (P < 0.001) lower with imatinib + ara-c (32.07 vs. 23.43 days). Molecular response at 3 months was significantly higher (P = 0.04) with imatinib + ara-c vs. imatinib alone (100% vs. 68.75%). Complete cytogenetic response was also higher with imatinib + ara-c vs. imatinib alone (42.85% vs. 25% at 6 months and 71.4% vs. 62.5% at 12 months). Neutropenia followed by thrombocytopenia and anemia were the most common AEs. Grade 3/4 hematological and nausea events were significantly (P < 0.05) higher with imatinib + ara-c. Other nonhematological events were not significantly different between the treatments. The median follow-up duration was 20 months (range: 15–23 months). CONCLUSION: Imatinib with low-dose ara-c can be considered as a potential first-line treatment option for CML-CP.






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