ClinVar Miner

Submissions for variant NM_004990.4(MARS1):c.1430A>G (p.Asn477Ser)

gnomAD frequency: 0.00001  dbSNP: rs778085997
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Molecular Genetics Laboratory, London Health Sciences Centre RCV001173430 SCV001336518 uncertain significance Charcot-Marie-Tooth disease criteria provided, single submitter clinical testing
Invitae RCV002240744 SCV002509603 uncertain significance Severe early-onset pulmonary alveolar proteinosis due to MARS deficiency; Charcot-Marie-Tooth disease axonal type 2U 2023-12-31 criteria provided, single submitter clinical testing This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 477 of the MARS protein (p.Asn477Ser). This variant is present in population databases (rs778085997, gnomAD 0.006%). This missense change has been observed in individual(s) with MARS-related conditions (PMID: 32376792). ClinVar contains an entry for this variant (Variation ID: 917033). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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.
Ambry Genetics RCV003284012 SCV003961726 uncertain significance Inborn genetic diseases 2023-05-16 criteria provided, single submitter clinical testing The c.1430A>G (p.N477S) alteration is located in exon 12 (coding exon 12) of the MARS1 gene. This alteration results from a A to G substitution at nucleotide position 1430, causing the asparagine (N) at amino acid position 477 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

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