ClinVar Miner

Submissions for variant NM_000131.4(F7):c.805+3_805+6del (rs754785708)

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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Illumina Clinical Services Laboratory,Illumina RCV000779129 SCV000915623 likely pathogenic Factor VII deficiency 2017-04-28 criteria provided, single submitter clinical testing The F7 c.805+3_805+6delGGGT variant has been reported in at least two studies in which it is found in a heterozygous state in two individuals with factor VII deficiency, including one who was mildly affected and one who was asymptomatic (Pinotti et al. 1998; Cramer et al. 2016). Characterization of FVII activity levels revealed activities of 44% and 61% of wild type, respectively, for the two individuals, consistent with mild factor VII deficiency. The granddaughter of the asymptomatic individual, who had a coagulation phenotype similar to that of her grandfather and a FVII activity level of 47%, was also found to carry this variant, though zygosity is not stated. The c805+3_805+6delGGGT variant was absent from 100 controls and is reported at a frequency of 0.00035 in the Latino population of the Exome Aggregation Consortium. Pinotti et al. (1998) demonstrated abnormal splicing by RT-PCR of mRNA derived from patient cells as well as transfected BHK cells, indicating the in-frame insertion of 11 codons in the mutant mRNA. Based on the available evidence, the c.805+3_805+6delGGGT variant is classified as a variant of unknown significance but suspicious for pathogenicity for factor VII deficiency. This variant was observed by ICSL as part of a predisposition screen in an ostensibly healthy population.
CeGaT Praxis fuer Humangenetik Tuebingen RCV001091741 SCV001247946 pathogenic not provided 2019-01-01 criteria provided, single submitter clinical testing
Mayo Clinic Laboratories, Mayo Clinic RCV001091741 SCV001713652 likely pathogenic not provided 2021-03-29 criteria provided, single submitter clinical testing PP3 + PS3 + PM1

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