Study of Factor VIII Inhibitor and F8 Gene Mutations in Persons with Hemophilia A from Benin

Simple item page
dc.contributor.authorBaglo, Ten_US
dc.contributor.authorZohoun, Aen_US
dc.contributor.authorHoussou, Ben_US
dc.contributor.authorMassi, Ren_US
dc.contributor.authorGuiwa, COen_US
dc.contributor.authorAnani, Len_US
dc.contributor.authorGazard, DKen_US
dc.contributor.authorFall, AOT.en_US
dc.date.accessioned2025-05-09T06:23:07Z
dc.date.available2025-05-09T06:23:07Z
dc.date.issued2024-03
dc.description.abstractAim: determine the prevalence of a FVIII inhibitors and identify the genetic mutations associated with their development in beninese personne with hemophilia (PwH) A. Study Design: this is cross-sectional descrptive study conducted from June 2022 to May 2023 in hemophilia treatment centers in Benin. Methodology: Inhibitor screening was carried out systematically in all PwHs A receiving FVIII infusion through determination of the circulating anticoagulant index and the Nijmegen-Bethesda assay. The molecular study strategy used for the F8 gene associated with hemophilia A is dependent on the severity of the hemophilia. Other data were collected either from patients' responses to the questionnaire or by studying their medical records and the center's hemophilia registry. Results: Of the 97 PwHs A followed up, 57 had been treated with FVIII infusion. Of these, 21 had developed inhibitors, representing a frequency of 36.8% of treated PwHs A and 43.75% of severe PwHs. None of the moderate or mild PwHs A had developed anti-FVIII antibodies. PwHs A with inhibitors had a median age of 11 years, ranging from 1 to 66 years. The Nijmegen-Bethesda test revealed 11 high responders and 10 low responders. Mutation analysis of the F8 gene revealed seven cases of intron 22 inversion, seven cases of nonsense mutations, three cases of deletion and one case of missense mutation. Mutations weren’t identified in three patients because their DNA did not amplify on long-distance PCR. In terms of therapy, immune tolerance induction wasn’t achieved in any of the 21 patients, but they are treated with emicizumab and bypass depending on the context. Conclusion: Although a cross-sectional study with a limited sample size, this study provides valuable information on beninese PwHs A with inhibitors. The frequency of inhibitors is high in treated PwHs A, and almost all patients who have developed inhibitors have high-risk genetic mutations.en_US
dc.identifier.affiliationsHematology Laboratory, National Teaching Hospital Hubert Koutoukou Maga of Cotonou, Benin and Faculty of Health Sciences, University of Abomey-Calavi, Cotonou, Beninen_US
dc.identifier.affiliationsHematology Laboratory, National Teaching Hospital Hubert Koutoukou Maga of Cotonou, Benin and Faculty of Health Sciences, University of Abomey-Calavi, Cotonou, Beninen_US
dc.identifier.affiliationsHematology Laboratory, National Teaching Hospital Hubert Koutoukou Maga of Cotonou, Beninen_US
dc.identifier.affiliationsHematology Laboratory, National Teaching Hospital Hubert Koutoukou Maga of Cotonou, Beninen_US
dc.identifier.affiliationsHematology Laboratory, National Teaching Hospital Hubert Koutoukou Maga of Cotonou, Beninen_US
dc.identifier.affiliationsFaculty of Health Sciences, University of Abomey-Calavi, Cotonou, Beninen_US
dc.identifier.affiliationsHematology Laboratory, National Teaching Hospital Hubert Koutoukou Maga of Cotonou, Benin and Faculty of Health Sciences, University of Abomey-Calavi, Cotonou, Beninen_US
dc.identifier.affiliationsHematology Laboratory of the Aristide le Dantec Hospital, Dakar, Senegal and Faculty of Medicine, Pharmacy and Odontostomatology- Cheikh Anta Diop University of Dakar, Senegal.en_US
dc.identifier.citationBaglo T, Zohoun A, Houssou B, Massi R, Guiwa CO, Anani L, Gazard DK, Fall AOT.. Study of Factor VIII Inhibitor and F8 Gene Mutations in Persons with Hemophilia A from Benin . International Blood Research & Reviews. 2024 Mar; 15(1): 38-44en_US
dc.identifier.issn2321-7219
dc.identifier.placeIndiaen_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/242680
dc.languageenen_US
dc.publisherMs. M. B. Mondalen_US
dc.relation.issuenumber1en_US
dc.relation.volume15en_US
dc.source.urihttps://doi.org/10.9734/ibrr/2024/v15i1333en_US
dc.subjectHemophilia Aen_US
dc.subjectinhibitorsen_US
dc.subjectNijmegen-Bethesda testen_US
dc.subjectF8 gene variantsen_US
dc.subjectgeneticsen_US
dc.titleStudy of Factor VIII Inhibitor and F8 Gene Mutations in Persons with Hemophilia A from Beninen_US
dc.typeJournal Articleen_US
Files
Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
ibrr2024v15n1p38.pdf
Size:
216.52 KB
Format:
Adobe Portable Document Format
Download
Collections
International Blood Research & Reviews