ClinVar Miner

Submissions for variant NM_006059.4(LAMC3):c.4348C>T (p.Arg1450Cys)

gnomAD frequency: 0.00003  dbSNP: rs201785610
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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000514725 SCV000589961 uncertain significance not provided 2017-04-18 criteria provided, single submitter clinical testing A variant of uncertain significance has been identified in the LAMC3 gene. The R1450C variant has not been published as a pathogenic variant, nor has it been reported as a benign variant to our knowledge. The R1450C variant is observed in 74/16,508 (0.4%) alleles from individuals of South Asian background including multiple unrelated homozygous individuals in large population cohorts, which is greater than expected for this disorder (Lek et al., 2016; 1000 Genomes Consortium et al., 2015; Exome Variant Server). The R1450C variant is a non-conservative amino acid substitution, which is likely to impact secondary protein structure as these residues differ in polarity, charge, size and/or other properties. This substitution occurs at a position where amino acids with similar properties to Arginine are tolerated across species. In silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. Therefore, based on the currently available information, it is unclear whether this variant is a pathogenic variant or a rare benign variant.
Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics RCV000514725 SCV000609733 uncertain significance not provided 2017-03-30 criteria provided, single submitter clinical testing
Invitae RCV000514725 SCV001042735 likely benign not provided 2024-01-19 criteria provided, single submitter clinical testing
PreventionGenetics, part of Exact Sciences RCV003942613 SCV004761860 likely benign LAMC3-related condition 2023-12-29 criteria provided, single submitter clinical testing This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications).

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