ClinVar Miner

Submissions for variant NM_001134831.2(AHI1):c.1052G>A (p.Arg351Gln) (rs397514726)

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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
HudsonAlpha Institute for Biotechnology, HudsonAlpha Institute for Biotechnology RCV000851324 SCV000993620 uncertain significance Joubert syndrome 3 2019-01-08 criteria provided, single submitter research
Illumina Clinical Services Laboratory,Illumina RCV000851324 SCV001316981 uncertain significance Joubert syndrome 3 2018-03-30 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.
Invitae RCV001234210 SCV001406843 uncertain significance Joubert syndrome 2019-07-25 criteria provided, single submitter clinical testing This sequence change replaces arginine with glutamine at codon 351 of the AHI1 protein (p.Arg351Gln). The arginine residue is highly conserved and there is a small physicochemical difference between arginine and glutamine. The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the ExAC database. This variant has not been reported in the literature in individuals with AHI1-related conditions. 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: "Probably Damaging"; Align-GVGD: "Class C0"). 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.

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