ClinVar Miner

Submissions for variant NM_198253.3(TERT):c.759G>C (p.Gln253His)

dbSNP: rs1579597808
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV002539942 SCV000954426 uncertain significance Dyskeratosis congenita, autosomal dominant 2; Idiopathic Pulmonary Fibrosis 2023-12-17 criteria provided, single submitter clinical testing This sequence change replaces glutamine, which is neutral and polar, with histidine, which is basic and polar, at codon 253 of the TERT protein (p.Gln253His). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with TERT-related conditions. ClinVar contains an entry for this variant (Variation ID: 657435). 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 TERT 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 RCV004559690 SCV002673706 uncertain significance Dyskeratosis congenita 2022-04-05 criteria provided, single submitter clinical testing The p.Q253H variant (also known as c.759G>C), located in coding exon 2 of the TERT gene, results from a G to C substitution at nucleotide position 759. The glutamine at codon 253 is replaced by histidine, an amino acid with highly similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.

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