ClinVar Miner

Submissions for variant NM_000369.5(TSHR):c.1342G>A (p.Val448Ile)

gnomAD frequency: 0.00004  dbSNP: rs201889708
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Ambry Genetics RCV000190814 SCV000244255 likely pathogenic Inborn genetic diseases 2013-12-20 criteria provided, single submitter clinical testing
Illumina Laboratory Services, Illumina RCV001115207 SCV001273166 uncertain significance Hypothyroidism due to TSH receptor mutations 2018-01-12 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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease.
Women's Health and Genetics/Laboratory Corporation of America, LabCorp RCV004689665 SCV005185607 uncertain significance not specified 2024-05-17 criteria provided, single submitter clinical testing Variant summary: TSHR c.1342G>A (p.Val448Ile) results in a conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 3.2e-05 in 251466 control chromosomes (gnomAD). The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.1342G>A in individuals affected with hypothyroidism due to TSH receptor mutations and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 208788). Based on the evidence outlined above, the variant was classified as uncertain significance.

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