ClinVar Miner

Submissions for variant NM_005120.3(MED12):c.5989G>T (p.Gly1997Cys)

dbSNP: rs1556339260
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV003762769 SCV000630358 uncertain significance FG syndrome 2024-01-19 criteria provided, single submitter clinical testing This sequence change replaces glycine, which is neutral and non-polar, with cysteine, which is neutral and slightly polar, at codon 1997 of the MED12 protein (p.Gly1997Cys). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with MED12-related conditions. ClinVar contains an entry for this variant (Variation ID: 458821). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on MED12 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.
Ambry Genetics RCV002358467 SCV002658744 uncertain significance Familial thoracic aortic aneurysm and aortic dissection 2020-01-06 criteria provided, single submitter clinical testing The p.G1997C variant (also known as c.5989G>T), located in coding exon 41 of the MED12 gene, results from a G to T substitution at nucleotide position 5989. The glycine at codon 1997 is replaced by cysteine, an amino acid with highly dissimilar properties. This amino acid position is highly conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.

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