RT Journal Article T1 Acute myeloid leukaemia of donor cell origin developing 17 years after allogenic hematopoietic cell transplantation for acute promyelocytic leukaemia. A1 Jiménez, Pilar A1 Alvarez, J Carlos A1 Garrido, Pilar A1 Lorente, J Antonio A1 Palacios, Jorge A1 Ruiz-Cabello, Francisco K1 bone marrow transplantation K1 donor cell leukaemia K1 FISH K1 MLL K1 STR K1 Enfermedad Aguda K1 Trasplante de Médula Ósea K1 Leucemia promielocítica aguda K1 Donantes de Tejidos K1 Femenino K1 Trasplante de Células Madre Hematopoyéticas K1 Trasplante Homólogo AB Donor cell leukaemia (DCL) is a rare complication of allogenic hematopoietic cell transplantation (HCT). We report the case of a female patient with acute promyelocytic leukaemia (APL), FAB type M3, who developed acute myeloid leukaemia (AML) type M5 of donor origin 17 years after allogenic bone marrow transplantation (BMT) from her HLA-matched sister. Morphology and immunophenotyping showed differences with the initial leukaemia, and short tandem repeat (STR) analysis confirmed donor-type haematopoiesis. Interphase fluorescence in situ hybridisation (FISH) showed an 11q23 deletion. Given that the latency period between transplant and development of leukaemia was the longest reported to date, we discuss the mechanisms underlying delayed leukaemia onset. PB Master Publishing Group SN 1550-9702 YR 2012 FD 2012-12 LK http://hdl.handle.net/10668/1402 UL http://hdl.handle.net/10668/1402 LA en NO Jiménez P, Alvarez JC, Garrido P, Lorente JA, Palacios J, Ruiz-Cabello F. Acute myeloid leukaemia of donor cell origin developing 17 years after allogenic hematopoietic cell transplantation for acute promyelocytic leukaemia. Int J Biomed Sci. 2012; 8(4):244-8 NO Journal Article; DS RISalud RD Apr 8, 2025