ClinVar Miner

Submissions for variant NM_138361.5(LRSAM1):c.458G>A (p.Arg153His) (rs368689811)

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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Illumina Clinical Services Laboratory,Illumina RCV001057366 SCV000477205 likely benign Charcot-Marie-Tooth disease type 2P 2018-01-13 criteria provided, single submitter clinical testing This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease.
Invitae RCV001057366 SCV001221853 uncertain significance Charcot-Marie-Tooth disease type 2P 2019-06-04 criteria provided, single submitter clinical testing This sequence change replaces arginine with histidine at codon 153 of the LRSAM1 protein (p.Arg153His). The arginine residue is highly conserved and there is a small physicochemical difference between arginine and histidine. This variant is present in population databases (rs368689811, ExAC 0.01%). This variant has not been reported in the literature in individuals with LRSAM1-related conditions. ClinVar contains an entry for this variant (Variation ID: 365012). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.

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