ClinVar Miner

Submissions for variant NM_000132.3(F8):c.377A>G (p.Lys126Arg) (rs1603436639)

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories RCV001000773 SCV001157826 likely pathogenic Hereditary factor VIII deficiency disease 2018-08-22 criteria provided, single submitter clinical testing The F8 c.377A>G; p.Lys126Arg variant, also known as K107R in the traditional nomenclature, is reported in the literature in at least one individual affected with hemophilia A (Rydz 2013). This variant is absent from general population databases (1000 Genomes Project, Exome Variant Server, and Genome Aggregation Database), indicating it is not a common polymorphism. Additionally, another variant at this codon (c.377A>C; p.Lys126Thr) has been reported in individuals with severe hemophilia A (Markoff 2009, see link to Factor VIII database). The lysine at codon 126 is highly conserved, and computational analyses (SIFT, PolyPhen-2) predict that this variant is deleterious. Based on available information, the p.Lys126Arg variant is considered to be likely pathogenic. References: Link to Factor VIII database: Markoff A et al. Combined homology modelling and evolutionary significance evaluation of missense mutations in blood clotting factor VIII to highlight aspects of structure and function. Haemophilia. 2009 Jul;15(4):932-41. Rydz N et al. The Canadian National Program for hemophilia mutation testing" database: a ten-year review. Am J Hematol. 2013 Dec;88(12):1030-4."

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