Abstract
We prospectively compared allogeneic hematopoietic stem cell transplantation (allo-HSCT) with chemotherapy as a post-remission therapy in a multicenter trial (JALSG AML97) of adult patients with intermediate or poor risk acute myeloid leukemia (AML). Of 503 patients aged 15–50 years old registered between December 1997 and July 2001, 392 achieved complete remission (CR). CR patients classified in the intermediate or poor risk group using a new scoring system were tissue typed. Seventy-three with and 92 without an HLA-identical sibling were assigned to the donor and no-donor groups. Of 73 patients in the donor group, 38 (52%) received allo-HSCT during CR1 and 17 (23%) after relapse. Intention-to-treat analysis revealed that the relapse incidence was reduced in the donor group (52 vs. 77%; p = 0.008), and the disease-free survival (DFS) improved (39 vs. 19%; p = 0.016), but overall survival (OS) was not significantly different (46 vs. 29%; p = 0.088). The OS benefit was seen in the patients aged 36–50 years old (49 vs. 24%; p = 0.031), suggesting an advantage of allo-HSCT among older patients with leukemia that is more resistant to chemotherapy than that among younger patients.
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Acknowledgments
We thank the clinicians of the 103 institutions who entered patients into the JALSG AML 97 study and provided the data to make this study possible. We also thank Ms. Y. Wada and Ms. Y. Komatsu for data management and Ms. Y. Makino of the JALSG office for providing valuable secretarial assistance. This study was supported in part by a grant from the Ministry of Health, Labour and Welfare of Japan.
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For the Japan Adult Leukemia Study Group (JALSG).
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Sakamaki, H., Miyawaki, S., Ohtake, S. et al. Allogeneic stem cell transplantation versus chemotherapy as post-remission therapy for intermediate or poor risk adult acute myeloid leukemia: results of the JALSG AML97 study. Int J Hematol 91, 284–292 (2010). https://doi.org/10.1007/s12185-009-0483-2
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DOI: https://doi.org/10.1007/s12185-009-0483-2