{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,3]],"date-time":"2026-10-03T13:25:11Z","timestamp":1791033911635,"version":"4.1.0"},"reference-count":41,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2004,9,6]],"date-time":"2004-09-06T00:00:00Z","timestamp":1094428800000},"content-version":"vor","delay-in-days":36,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Vox Sanguinis"],"published-print":{"date-parts":[[2004,8]]},"abstract":"<jats:p><jats:bold>Background\u2002<\/jats:bold>Polymorphisms of platelet membrane glycoproteins such as human platelet antigen (HPA)\u20101b, HPA\u20102b, the \u20105T\/C Kozak sequence and C807T have been described as risk factors for vascular disease. Vaso\u2010occlusion episodes are a common feature of sickle cell anaemia (SCA), leading to complications such as stroke, acute chest syndrome, avascular head femur necrosis and priapism. Complex interactions are involved in vaso\u2010occlusion, and activated platelets may play an important role. These data raised the question of whether platelet polymorphisms could be implicated in occlusive vascular complications (OVC) of SCA.<\/jats:p><jats:p><jats:bold>Materials and Methods\u2002<\/jats:bold>In this study, 97 patients with SCA were analysed in two groups: 34 patients presenting with OVC (SCA\u2010VC) and 63 without these complications (SCA\u2010N). The distribution of the HPA\u20101, \u20102 and \u20105 systems, as well as C807T dimorphism and \u20105T\/C Kozak sequence alleles, was evaluated using DNA\u2010based methods.<\/jats:p><jats:p><jats:bold>Results\u2002<\/jats:bold>Patients of the SCA\u2010VC group showed a higher frequency of the HPA\u20105b allele (0\u00b7324) compared with those of the SCA\u2010N group (0\u00b7111) (\u03c7<jats:sup>2<\/jats:sup>\u00a0=\u00a013\u00b719,<jats:italic>P<\/jats:italic>\u00a0=\u00a00\u00b70002). None of the other polymorphisms, isolated or associated as haplotypes, demonstrated any correlation with the development of OVC in these patients.<\/jats:p><jats:p><jats:bold>Conclusions\u2002<\/jats:bold>The findings of this study suggest that the HPA\u20105b allele is a genetic risk factor for the development of OVC in patients with SCA. This allele could be explored as a target for the development of new therapeutic approaches.<\/jats:p>","DOI":"10.1111\/j.1423-0410.2004.00536.x","type":"journal-article","created":{"date-parts":[[2004,12,29]],"date-time":"2004-12-29T22:58:48Z","timestamp":1104361128000},"page":"118-123","source":"Crossref","is-referenced-by-count":22,"title":["Polymorphism of the human platelet antigen\u20105 system is a risk factor for occlusive vascular complications in patients with sickle cell anemia"],"prefix":"10.1111","volume":"87","author":[{"given":"V.","family":"Castro","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"F. L.","family":"Alberto","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R. N. 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