ClinVar Miner

Submissions for variant NC_000014.8:g.(?_45667837)_(45669211_?)del

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV004578062 SCV005065529 likely pathogenic Fanconi anemia 2022-12-07 criteria provided, single submitter clinical testing This variant disrupts the C-terminal ERCC4 nuclease domain and the helix-hairpin-helix (HhH) motifs of the FANCM protein, which are critical for the interaction between FANCM and FAAP24, chromatin localization of the FANCM/FAAP24 complex and the activation of the FA core complex (PMID: 17289582, 23932590, 18174376, 19379763, 24003026). While functional studies have not been performed to directly test the effect of this variant on FANCM protein function, this suggests that disruption of this region of the protein may be causative of disease. This variant has not been reported in the literature in individuals affected with FANCM-related conditions. This variant is a gross deletion of the genomic region encompassing exon(s) 22-23 of the FANCM gene, which includes the termination codon. This deletion extends beyond the assayed region for this gene and therefore may encompass additional genes. While this deletion is not anticipated to lead to nonsense mediated decay, it is expected to alter mRNA translation or result in a truncated protein product. In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic.

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