Does high-resolution donor typing of HLA-C or other loci upon registration confer advantages to patients?

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• 作者：Valerie  ; Dubois^a ;   ; ^{valerie.dubois@efs.sante.fr} ; Catherine  ; Giannoli^a ; Marie Lorraine  ; Balè ; re^b ; Sylvie  ; Rey^a ; Colette  ; Raffoux^c ; Dominique  ; Rigal^a
• 关键词：Donor selection ; HLA-C locus ; Resolution-level typing ; Bone marrow transplantation
• 刊名：Human Immunology
• 出版年：2011
• 出版时间：November 2011
• 年：2011
• 卷：72
• 期：11
• 页码：1033-1038
• 全文大小：691 K

文摘

Our study compared all requests for confirmatory typing (CT requests) received in our center between May 2007 and December 2009 (n = 134) for donors issued from 3 groups defined by different human leukocyte antigen (HLA) loci typed at different levels of resolution. We observed a significant advantage for volunteers when HLA-C 2-digit typing was available or with HLA-A, -B, -C, -DRB1 4-digit typing compared with generic HLA-A, -B, -DRB1, -DQB1 DNA typing: increased percentage of CT requests (p < 0.001), increased rate of donor selection for donation (p < 0.001), and decreased time frame for donor search (p = 0.025). The time frame for a successful search (donation) is similar among the 3 groups, indicating that the search might be concluded more rapidly when the pathology is clinically active or when the patient is at a high risk of relapse (76 % of our cases) or for pediatric patients (24 % of our cases), regardless of HLA typing resolution. Improvement of HLA typing for volunteers could be a great advantage for first selection in the absence of emergency or high-risk disease. Knowledge of HLA-C should be used to prioritize the selection of donors for further testing and could allow a better donor selection process, reducing search duration and increasing efficiency. In most cases, 2-digit typing for HLA-C associated with specific tools to estimate the probability of finding a matched donor could be sufficient.