Donor-Derived Second Hematologic Malignancies after Cord Blood Transplantation

作者：Ballen Karen K^*; Cutler Corey; Yeap Beow Y; McAfee Steven L; Dey Bimalangshu R; Attar Eyal C; Chen Yi Bin; Haspel Richard L; Liney Deborah; Koreth John; Ho Vincent; Alyea Edwin P; Soiffer Robert J; Spitzer Thomas R; Antin Joseph H

来源：Biology of Blood and Marrow Transplantation, 2010, 16(7): 1025-1031.

DOI：10.1016/j.bbmt.2010.02.014

• Cord blood
• Second cancer

Double umbilical cord blood transplantation (UCBT) with a reduced-intensity conditioning regimen is an effective strategy for adult patients without a matched donor. The risk of second malignancies in these patients has not yet been established, however. In the present study, 98 adults with a hematologic malignancy underwent double UCBT. Seventy patients received a reduced-intensity conditioning regimen of fludarabine 30 mg/m(2)/day for 6 days, melphalan 100 mg/m(2)/day for 1 day, and rabbit antithymocyte globulin 1.5 mg/kg/day for 4 days, and 28 patients received a myeloablative total body radiation containing conditioning regimen. Sixty-three patients received sirolimus-based graft-versus-host disease (GVHD) prophylaxis, and 35 patients received non sirolimus-based GVHD prophylaxis. The median patient age was 48 years (range, 19-67 years). Eighteen patients developed a second malignancy at a median of 134 days after transplantation. Sixteen patients had lymphoma, and 2 patients had myelodysplasic syndrome/myeloproliferative disorder (MDS/MPD). Sixteen of these second malignancies (both cases of MDS/MPD and 14 of the lymphomas) were donor-derived; the origins of the others were not determined. GVHD prophylaxis, HLA matching, primary disease, age, total nucleated cell dose, and CD34(+) cell dose were not associated with a higher rate of second malignancy. Second myelogenous malignancies of donor origin occur after double UCBT, suggesting that a search for donor origin should be performed in all patients with suspected relapse.

• 出版日期2010-7