Ontology type: schema:ScholarlyArticle
2012-08-26
AUTHORSJohannes C. Fischer, Guido Kobbe, Jürgen Enczmann, Rainer Haas, Markus Uhrberg
ABSTRACTIt was previously shown that chronic myeloid leukemia (CML) patients transplanted with peripheral blood progenitor cells (PBPC) from HLA-C allele-matched donors had better clinical outcome when lacking the HLA-C-encoded KIR epitope C2. We investigated whether this holds true in other diseases and in HLA-C allele-mismatched patients. Twenty-four myelodysplastic syndrome (MDS), 39 acute myeloid leukemia (AML)/CML, and 34 acute lymphoblastic leukemia/non-Hodgkin lymphoma patients received unrelated unmanipulated PBPC. HLA matching was analyzed retrospectively (including DNA-based direct sequencing of HLA-C). Only in AML/CML, the C2 ligand was associated with impaired overall survival (OS, p < 0.05). We next calculated the impact of donor/recipient HLA-C allele matching within the C1 and C2 groups. Surprisingly, AML/CML and MDS patients with C2 ligands profited from HLA-C allele mismatching (OS, p < 0.01), whereas in the C1 group, allele matching was beneficial (p < 0.05). HLA-C allele mismatching in the C2 KIR ligand group was associated with lower TRM (OR 0.48, p < 0.009) and lower relapse rate (OR 2.7 p < 0.1) when compared to allele-matched C2 patients. Thus, patients could be assigned to a low- and a high-risk group according to their C1/C2 ligand status and the HLA-C allele matching degree. These data suggest that four-digit allele matching of HLA-C has differential effects dependent on the presence of C1 and C2 KIR epitopes in the patient. More... »
PAGES879-885
http://scigraph.springernature.com/pub.10.1007/s00251-012-0648-7
DOIhttp://dx.doi.org/10.1007/s00251-012-0648-7
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PUBMEDhttps://www.ncbi.nlm.nih.gov/pubmed/22923051
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