ClinVar Miner

Submissions for variant NM_000132.3(F8):c.935T>C (p.Phe312Ser) (rs137852405)

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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
NIHR Bioresource Rare Diseases, University of Cambridge RCV000852250 SCV000899989 pathogenic Hereditary factor IX deficiency disease 2019-02-01 criteria provided, single submitter research
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories RCV000010909 SCV001157924 pathogenic Hereditary factor VIII deficiency disease 2018-10-11 criteria provided, single submitter clinical testing The F8 c.935T>C; p.Phe312Ser variant (rs137852405), also known as Phe293Ser, is reported in the literature in numerous individuals affected with mild hemophilia A (Higuchi 1991, Johnsen 2017, Liu 1998, Miller 2012). This variant is reported in ClinVar (Variation ID: 10196), but it is absent from general population databases (Exome Variant Server, Genome Aggregation Database), indicating it is not a common polymorphism. The phenylalanine at codon 312 is moderately conserved, and modeling approaches suggest this variant disrupts tertiary structure and hydrogen bonding patterns in the mature protein (Liu 1998, Markoff 2009). Further, this variant occurs in a domain involved in interaction with the chaperone protein BiP and cellular studies suggest it results in impaired secretion (Swaroop 1997). Based on available information, the p.Phe312Ser variant is considered to be pathogenic. References: Higuchi M et al. Molecular characterization of severe hemophilia A suggests that about half the mutations are not within the coding regions and splice junctions of the factor VIII gene. Proc Natl Acad Sci U S A. 1991 Aug 15;88(16):7405-9. Johnsen JM et al. Novel approach to genetic analysis and results in 3000 hemophilia patients enrolled in the My Life, Our Future initiative. Blood Adv. 2017 May 18;1(13):824-834. Liu M et al. A domain mutations in 65 haemophilia A families and molecular modelling of dysfunctional factor VIII proteins. Br J Haematol. 1998 Dec;103(4):1051-60. 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. Miller CH et al. F8 and F9 mutations in US haemophilia patients: correlation with history of inhibitor and race/ethnicity. Haemophilia. 2012 May;18(3):375-82. Swaroop M et al. Mutagenesis of a potential immunoglobulin-binding protein-binding site enhances secretion of coagulation factor VIII. J Biol Chem. 1997 Sep 26;272(39):24121-4.
OMIM RCV000010909 SCV000031136 pathogenic Hereditary factor VIII deficiency disease 1991-08-15 no assertion criteria provided literature only

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