PMID- 15973179 OWN - NLM STAT- MEDLINE DCOM- 20050728 LR - 20190713 IS - 0041-1337 (Print) IS - 0041-1337 (Linking) VI - 79 IP - 12 DP - 2005 Jun 27 TI - Reduced risk for molecular disease in patients with chronic myeloid leukemia after transplantation from a KIR-mismatched donor. PG - 1741-7 AB - BACKGROUND: To examine how killer-cell immunoglobulin-like receptor (KIR) ligand incompatibilities effect molecular relapse (MR), we compared the occurrence of bcr-abl-positive reverse-transcriptase polymerase chain reaction (RT-PCR) results in 236 CML patients (pts) after human leukocyte antigen (HLA)-identical (n=158) (group 1), HLA class I antigen mismatched and KIR-ligand compatible (n=49) (group 2), and HLA class I antigen mismatched and KIR-ligand incompatible (n=29) (group 3) hematopoietic stem-cell transplantation. METHODS: We performed a retrospective single-center study. MR was evaluated using the real-time RT-PCR method for the detection of bcr-abl transcripts. RESULTS: In the first group, 133 of 158 (84%) pts were in the first chronic phase of CML, and the corresponding figures were 33 of 49 (67%) pts in group 2 and 19 of 29 (64%) in group 3 (P<0.05). MR occurred in 1 of 29 (3%) pts in group 3 compared with 62 of 158 (39%) pts in group 1 and in 11 of 49 (22%) pts in group 2 (P<0.001). A hematologic relapse developed in 20 of 158 (13%) pts in group 1, 2 of 49 (4%) pts in group 2, and in 0 of 29 (0%) pts in group 3 (P<0.05). Multivariate analysis confirmed that KIR mismatches are a strong independent predictor for the occurrence of MR after transplantation (P<0.02). The 5-year overall survival rate did not vary greatly between the three groups (67% in group 1, 52% in group 2, and 66% in group 3). CONCLUSIONS: These results suggest that KIR-ligand incompatibility is an important prognostic factor in the occurrence of MR after transplantation for CML. FAU - Elmaagacli, Ahmet H AU - Elmaagacli AH AD - Department of Bone Marrow Transplantation, University Hospital of Essen, Hufelandstrasse 55, 45122 Essen, Germany. ahmet.elmaagacli@uni-essen.de FAU - Ottinger, Hellmut AU - Ottinger H FAU - Koldehoff, Michael AU - Koldehoff M FAU - Peceny, Rudolf AU - Peceny R FAU - Steckel, Nina K AU - Steckel NK FAU - Trenschel, Rudolf AU - Trenschel R FAU - Biersack, Harald AU - Biersack H FAU - Grosse-Wilde, Hans AU - Grosse-Wilde H FAU - Beelen, Dietrich W AU - Beelen DW LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Transplantation JT - Transplantation JID - 0132144 RN - 0 (Receptors, Immunologic) RN - 0 (Receptors, KIR) RN - EC 2.7.10.2 (Fusion Proteins, bcr-abl) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Child MH - Female MH - Fusion Proteins, bcr-abl/genetics MH - Graft Rejection/*prevention & control MH - Graft Survival/*physiology MH - Humans MH - Leukemia, Myelogenous, Chronic, BCR-ABL Positive/immunology/*therapy MH - Male MH - Middle Aged MH - Receptors, Immunologic/*genetics/*immunology MH - Receptors, KIR MH - Recurrence MH - Retrospective Studies MH - Reverse Transcriptase Polymerase Chain Reaction MH - Siblings MH - *Stem Cell Transplantation MH - Tissue Donors MH - Transplantation, Homologous/*immunology EDAT- 2005/06/24 09:00 MHDA- 2005/07/29 09:00 CRDT- 2005/06/24 09:00 PHST- 2005/06/24 09:00 [pubmed] PHST- 2005/07/29 09:00 [medline] PHST- 2005/06/24 09:00 [entrez] AID - 00007890-200506270-00017 [pii] AID - 10.1097/01.tp.0000164500.16052.3c [doi] PST - ppublish SO - Transplantation. 2005 Jun 27;79(12):1741-7. doi: 10.1097/01.tp.0000164500.16052.3c.