ClinVar Miner

Submissions for variant NM_001379200.1(TBX1):c.1472C>T (p.Ala491Val)

gnomAD frequency: 0.00001  dbSNP: rs373987708
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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV001341090 SCV001534938 uncertain significance DiGeorge syndrome 2022-09-01 criteria provided, single submitter clinical testing This missense change has been observed in at least one individual who was not affected with TBX1-related conditions (Invitae). This variant has not been reported in the literature in individuals affected with TBX1-related conditions. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This sequence change replaces alanine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 482 of the TBX1 protein (p.Ala482Val). ClinVar contains an entry for this variant (Variation ID: 1037870). 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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0").

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