ClinVar Miner

Submissions for variant NM_002241.5(KCNJ10):c.685A>G (p.Ile229Val)

dbSNP: rs767156961
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV000187808 SCV000241406 uncertain significance not provided 2018-02-21 criteria provided, single submitter clinical testing p.Ile229Val (ATC>GTC): c.685 A>G in exon 2 of the KCNJ10 gene (NM_002241.4)A variant of unknown significance has been identified in the KCNJ10 gene. The I229V variant has not been published as a mutation, nor has it been reported as a benign polymorphism to our knowledge. It was not observed in approximately 6,500 individuals of European and African American ancestry in the NHLBI Exome Sequencing Project, indicating it is not a common benign variant in these populations. This substitution occurs at a position that is highly conserved across mammals. However, the I229V variant is a conservative amino acid substitution, which is not likely to impact secondary protein structure as these residues share similar properties. In silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. Therefore, based on the currently available information, it is unclear whether this variant is a pathogenic mutation or a rare benign variant. The variant is found in EPILEPSY panel(s).
Invitae RCV001045629 SCV001209493 uncertain significance EAST syndrome 2022-08-21 criteria provided, single submitter clinical testing 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 missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. ClinVar contains an entry for this variant (Variation ID: 205820). This variant has not been reported in the literature in individuals affected with KCNJ10-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces isoleucine, which is neutral and non-polar, with valine, which is neutral and non-polar, at codon 229 of the KCNJ10 protein (p.Ile229Val).

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