ClinVar Miner

Submissions for variant NM_004990.4(MARS1):c.188G>A (p.Ser63Asn)

gnomAD frequency: 0.00001  dbSNP: rs932854507
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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 RCV002239187 SCV002509714 uncertain significance Severe early-onset pulmonary alveolar proteinosis due to MARS deficiency; Charcot-Marie-Tooth disease axonal type 2U 2023-12-21 criteria provided, single submitter clinical testing This sequence change replaces serine, which is neutral and polar, with asparagine, which is neutral and polar, at codon 63 of the MARS protein (p.Ser63Asn). This variant is present in population databases (no rsID available, gnomAD 0.007%). This variant has not been reported in the literature in individuals affected with MARS-related conditions. ClinVar contains an entry for this variant (Variation ID: 1681676). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The asparagine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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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