ClinVar Miner

Submissions for variant NM_000165.5(GJA1):c.1039C>A (p.Leu347Ile)

gnomAD frequency: 0.00017  dbSNP: rs184583316
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Total submissions: 4
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
GeneDx RCV001574525 SCV001801360 uncertain significance not provided 2023-10-24 criteria provided, single submitter clinical testing In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge
Labcorp Genetics (formerly Invitae), Labcorp RCV001866054 SCV002107958 uncertain significance Oculodentodigital dysplasia, autosomal recessive 2024-01-22 criteria provided, single submitter clinical testing This sequence change replaces leucine, which is neutral and non-polar, with isoleucine, which is neutral and non-polar, at codon 347 of the GJA1 protein (p.Leu347Ile). This variant is present in population databases (rs184583316, gnomAD 0.08%). This variant has not been reported in the literature in individuals affected with GJA1-related conditions. ClinVar contains an entry for this variant (Variation ID: 1206770). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The isoleucine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect 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.
Fulgent Genetics, Fulgent Genetics RCV002476878 SCV002778288 uncertain significance Autosomal dominant palmoplantar keratoderma and congenital alopecia; Atrioventricular septal defect and common atrioventricular junction; Craniometaphyseal dysplasia, autosomal recessive; Hypoplastic left heart syndrome 1; Oculodentodigital dysplasia, autosomal recessive; Syndactyly type 3; Oculodentodigital dysplasia; Erythrokeratodermia variabilis et progressiva 3 2021-07-15 criteria provided, single submitter clinical testing
Ambry Genetics RCV003161128 SCV003888929 uncertain significance Inborn genetic diseases 2023-02-15 criteria provided, single submitter clinical testing The c.1039C>A (p.L347I) alteration is located in exon 2 (coding exon 1) of the GJA1 gene. This alteration results from a C to A substitution at nucleotide position 1039, causing the leucine (L) at amino acid position 347 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

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