ClinVar Miner

Submissions for variant NM_000132.4(F8):c.209_212del (p.Leu69_Phe70insTer)

dbSNP: rs387906434
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Total submissions: 5
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories RCV000010872 SCV001471660 pathogenic Hereditary factor VIII deficiency disease 2021-01-14 criteria provided, single submitter clinical testing The F8 c.209_212delTTGT; p.Phe70Ter variant (rs387906434), also known as c.208_211delTTTG, is published in the medical literature in numerous individuals with severe hemophilia A (Becker 1996, Habart 2003, Liu 1998, F8 database and references therein). Samples from affected individuals with this variant typically exhibit less than 1% of wildtype clotting activity (Habart 2003, Liu 1998, F8 database and references therein). This variant is absent from general population databases (Exome Variant Server, Genome Aggregation Database), indicating it is not a common polymorphism. This variant deletes 4 nucleotides, leads to an immediate stop codon and is predicted to result in a truncated protein or mRNA subject to non-sense mediated decay. Considering available information, this variant is considered to be pathogenic. References: Link to F8 database: http://www.factorviii-db.org Becker J et al. Characterization of the factor VIII defect in 147 patients with sporadic hemophilia A: family studies indicate a mutation type-dependent sex ratio of mutation frequencies. Am J Hum Genet. 1996 Apr;58(4):657-70.
Genetics and Molecular Pathology, SA Pathology RCV000010872 SCV002556570 pathogenic Hereditary factor VIII deficiency disease 2021-05-05 criteria provided, single submitter clinical testing
Neuberg Centre For Genomic Medicine, NCGM RCV000010872 SCV004047428 pathogenic Hereditary factor VIII deficiency disease criteria provided, single submitter clinical testing The F8 c.209_212del (p.Phe70Ter) variant has been reported in hemizygous state in individuals affected with Hemophilia A (Habart 2003). This variant has been reported to the ClinVar database as Pathogenic. The p.Phe70Ter variant is novel (not in any individuals) in gnomAD Exomes and is novel (not in any individuals) in 1000 Genomes. This variant is predicted to cause loss of normal protein function through protein truncation. Loss of function variants have been previously reported to be disease causing. For these reasons, this variant has been classified as Pathogenic.
Mayo Clinic Laboratories, Mayo Clinic RCV004791212 SCV005413486 pathogenic not provided 2024-04-16 criteria provided, single submitter clinical testing PM2_moderate, PM6, PS4_moderate, PVS1
OMIM RCV000010872 SCV000031099 pathogenic Hereditary factor VIII deficiency disease 1995-01-01 no assertion criteria provided literature only

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