{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,21]],"date-time":"2026-05-21T00:45:39Z","timestamp":1779324339562,"version":"3.51.4"},"reference-count":21,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2024,3,22]],"date-time":"2024-03-22T00:00:00Z","timestamp":1711065600000},"content-version":"vor","delay-in-days":21,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["HLA"],"published-print":{"date-parts":[[2024,3]]},"abstract":"<jats:p>In patients awaiting an allogeneic haematopoietic stem cell transplantation, platelet transfusion is a risk factor for anti\u2010HLA class I immunization because the resulting donor\u2010specific antibodies complicate the allograft process. The objective of the present study was to determine the feasibility of a novel eplet\u2010based strategy for identifying HLA class I mismatches between potential donors and the recipient when pre\u2010allograft platelet transfusions were required. We included 114 recipient\/haploidentical relative pairs. For each pair, we entered HLA\u2010class I typing data into the HLA Eplet Mismatch calculator, defined the list of mismatched eplets (for the recipient versus donor direction) and thus identified the shared HLAs to be avoided. Using this list of HLAs, we defined the theoretical availability of platelet components (PCs) by calculating the virtual panel\u2010reactive antibody (vPRA). We also determined the number of PCs actually available in France by querying the regional transfusion centre's database. The mean\u2009\u00b1\u2009standard deviation number of highly\/moderately exposed eplets to be avoided in platelet transfusions was 5.8\u2009\u00b1\u20093.3, which led to the prohibition of 38.5\u2009\u00b1\u20092 HLAs\u2010A and \u2010B. Taking into account the mismatched antigens and the eplet load, the mean\u2009\u00b1\u2009standard deviation theoretical availability of PCs (according to the vPRA) was respectively 34.49%\u2009\u00b1\u20091.95% for HLA\u2010A and 80%\u2009\u00b1\u20092.3% for HLA\u2010B. A vPRA value below 94.9% for highly or moderately exposed eplets would predict that 10 PCs were actually available nationally. Although epitope protection of HLA molecules is feasible, it significantly restricts the choice of PCs.<\/jats:p>","DOI":"10.1111\/tan.15438","type":"journal-article","created":{"date-parts":[[2024,3,22]],"date-time":"2024-03-22T10:15:20Z","timestamp":1711102520000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Platelet transfusions in haploidentical haematopoietic stem cell allograft candidates: Protecting <scp>HLA\u2010A<\/scp> and <scp>HLA\u2010B<\/scp> antigens through eplet analysis"],"prefix":"10.1111","volume":"103","author":[{"given":"Gatien","family":"Durand","sequence":"first","affiliation":[{"name":"Department of Haematology and Histocompatibility Amiens University Hospital  Amiens France"},{"name":"EA HEMATIM 4666 Jules Verne University of Picardie  Amiens 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