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Artículo

F8 intron 22 inversions and SNP rs73563631 in unrelated families with severe haemophilia A: clinical features and gene testing implications

Abelleyro, Miguel MartinIcon ; Rossetti, Liliana CarmenIcon ; Curto, Maria de Los AngelesIcon ; Radic, Claudia PamelaIcon ; Marchione, Vanina DanielaIcon ; de Brasi, Carlos DanielIcon
Fecha de publicación: 10/2015
Editorial: Schattauer Gmbh-Verlag Medizin Naturwissenschaften
Revista: Thrombosis and Haemostasis
ISSN: 0340-6245
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Patología; Bioquímica y Biología Molecular

Resumen

F8 intron 22 inversions (INV22), the commonest cause of severe haemophilia A (HA), are mostly represented by type I (INV22-1) and type II (INV22-2) patterns (4:1) using BclI-fragments´ based techniques such as inverse shifting-PCR (IS-PCR/2008). Using IS-PCR/2008, we identified unusual patterns of the INV22-1 and INV22-2 (characterised by no signals in the diagnostic test and conventional INV22-1/-2 patterns in the complementary test) in patients and carriers from two (0.6%) out of 308 Argentinean families with severe-HA. A theoretical analysis of the 85 SNPs embedded in the relevant BclI-fragments followed by PCR-BclI-RFLP analysis allowed identification of the SNP rs73563631*G allele associated with a new BclI-restriction site in all four patients of Family 1 and 2. Linkage analysis using seven F8-linked-STRs in the two families confirmed two unrelated haplotypes in phase with INV22-1/-2. Screening of 404 X-chromosomes from the Argentinean general population failed to detected SNP rs73563631*G allele (q<0.24%). A new version of the IS-PCR/2008 adding the genotyping of the new patterns (x) of INV22-1/-2 was developed. Clinical/biochemical characteristics (severity and inhibitor risks) of patients with INV22-1x/-2x were virtually equal to canonical INV22s. Our estimations predict the involvement of INV22-1x/-2x in about 2.7% (4/149) of INV22-affected cases worldwide.
Palabras clave: Inv22 , Ha , F8 , Xq28 , Hemophilia
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
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URI: http://hdl.handle.net/11336/42754
DOI: http://dx.doi.org/10.1160/TH15-08-0643
URL: https://www.thieme-connect.com/products/ejournals/abstract/10.1160/th15-08-0643
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Articulos(IMEX)
Articulos de INST.DE MEDICINA EXPERIMENTAL
Citación
Abelleyro, Miguel Martin; Rossetti, Liliana Carmen; Curto, Maria de Los Angeles; Radic, Claudia Pamela; Marchione, Vanina Daniela; et al.; F8 intron 22 inversions and SNP rs73563631 in unrelated families with severe haemophilia A: clinical features and gene testing implications; Schattauer Gmbh-Verlag Medizin Naturwissenschaften; Thrombosis and Haemostasis; 115; 3; 10-2015; 678-681
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