2013
DOI: 10.1007/s12185-013-1341-9
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Genotypic and phenotypic features of Japanese patients with mild to moderate hemophilia A

Abstract: Hemophilia A is the most common inherited bleeding disorder. To better understand the genotypic and phenotypic features of Japanese patients with mild to moderate hemophilia A, we studied 29 unrelated patients with more than 1 % FVIII activity (FVIII:C). Differences were observed in nine of 21 patients in measured FVIII:C levels between the one-stage clotting and chromogenic assays. We identified a mutation in F8 in 28 of the 29 patients. Mutations in two amino acids, Y492 and R550, were detected at a much hig… Show more

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Cited by 4 publications
(2 citation statements)
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“…Twenty‐five of the patients were categorized as the "nondiscrepant group" in the absence of FVIII assay discrepancy in the detected variants. Five of the patients were found to carry variants known to be associated with FVIII assay discrepancy, namely p.Ser308Leu (n = 2), 5,19 p.Gly498Arg, 22 p.Arg550Cys 5,19 and p.Trp707Leu, 14 and were categorized as the "discrepant group." All five individuals in the discrepant group showed "standard" discrepancy (FVIII:C 1st > FVIII:C Chr ), but not "inverse" discrepancy 23 (FVIII:C Chr > FVIII:C 1st ).…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Twenty‐five of the patients were categorized as the "nondiscrepant group" in the absence of FVIII assay discrepancy in the detected variants. Five of the patients were found to carry variants known to be associated with FVIII assay discrepancy, namely p.Ser308Leu (n = 2), 5,19 p.Gly498Arg, 22 p.Arg550Cys 5,19 and p.Trp707Leu, 14 and were categorized as the "discrepant group." All five individuals in the discrepant group showed "standard" discrepancy (FVIII:C 1st > FVIII:C Chr ), but not "inverse" discrepancy 23 (FVIII:C Chr > FVIII:C 1st ).…”
Section: Resultsmentioning
confidence: 99%
“…Each of these cut‐offs was suggested using a different single reagent combination for OSA, indicating that the variability in cut‐offs could be due to differences especially in the OSA reagents used for FVIII:C measurements. Indeed, obvious differences between activated partial thromboplastin time (APTT) reagents in OSA tests have been previously reported 14 …”
Section: Introductionmentioning
confidence: 99%