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Autografting

Auto-SCT for AML in second remission: CALGB Study 9620

Abstract

We studied the feasibility and efficacy of a two-step approach to Auto-SCT for patients with AML in second remission. Step 1 consisted of consolidation chemotherapy using cytarabine 2000 mg/m2 i.v. every 12 h for 4 days plus etoposide 40 mg/kg total dose by continuous i.v. infusion over the same 4 days. PBSC were collected after G-CSF stimulation during recovery from this chemotherapy. Step 2, auto-SCT, used a preparative regimen of oral BU 16 mg/kg over 4 days followed by etoposide 60 mg/kg i.v. Of the 50 patients entered on Step 1, two died from treatment complications, and seven failed to proceed to transplantation. A median CD34+ cell dose of 5.9 × 106/kg was collected in a median of three collections. With a median follow-up of 8.2 years, 5-year disease-free survival (DFS) is 28%. The most important prognostic factor was cytogenetics, with acute promyelocytic leukemia (APL) patients having a 5-year DFS of 67% compared with 16% for others. We conclude that this two-step approach to autologous transplantation produces good CD34+ mobilization and that this approach has cured some patients. Results in patients with APL are especially promising.

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Acknowledgements

The research for CALGB 9620 was supported in part by grants from the National Cancer Institute (CA31946) to the Cancer and Leukemia Group B (Richard L Schilsky, MD, Chairman) and to the CALGB Statistical Center (Stephen George, PhD, CA33601). The content of this manuscript is solely the responsibility of the authors and does not necessarily represent the official views of the National Cancer Institute.

The following institutions participated in this study:

Wake Forest University School of Medicine—David D Hurd, MD, supported by CA03927. University of California at San Francisco—Charles Ryan, MD, supported by CA60138. University of Chicago—Gini Fleming, MD, supported by CA41287. University of Maryland Cancer Center—Martin Edelman, MD, supported by CA31983. Duke University—Jeffrey Crawford, MD, supported by CA47577. North Shore University Hospital—Daniel R Budman, MD, supported by CA35279. Roswell Park Cancer Institute—Ellis Levine, MD, supported by CA02599. Washington University School of Medicine—Nancy Bartlett, MD, supported by CA77440. Mount Sinai School of Medicine—Lewis R Silverman, MD, supported by CA04457. Ohio State University Medical Center—Clara D Bloomfield, MD, supported by CA77658. State of New York Upstate Medical University—Stephen L Graziano, MD, supported by CA21060. University of North Carolina at Chapel Hill—Thomas C Shea, MD, supported by CA47559. Greenville CCOP, Cancer Centers of the Carolinas—Jeffrey K Giguere, MD, supported by CA29165. Medical University of South Carolina—Mark Green, MD, supported by CA03927. Southeast Cancer Control Consortium—James N Atkins, MD, supported by CA45808. University of Vermont—Hyman B Muss, MD, supported by CA77406. Weill Medical College of Cornell University—Scott Wadler, MD, supported by CA07968. Walter Reed Army Medical Center—Thomas Reid, MD, supported by CA26806.

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Correspondence to C A Linker.

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Linker, C., Owzar, K., Powell, B. et al. Auto-SCT for AML in second remission: CALGB Study 9620. Bone Marrow Transplant 44, 353–359 (2009). https://doi.org/10.1038/bmt.2009.36

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