ClinVar Miner

Submissions for variant NM_022168.4(IFIH1):c.557G>C (p.Arg186Pro)

dbSNP: rs189443152
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV001234603 SCV001407257 uncertain significance Singleton-Merten syndrome 1; Aicardi-Goutieres syndrome 7 2023-11-27 criteria provided, single submitter clinical testing This sequence change replaces arginine, which is basic and polar, with proline, which is neutral and non-polar, at codon 186 of the IFIH1 protein (p.Arg186Pro). This variant is present in population databases (rs189443152, gnomAD 0.004%). This variant has not been reported in the literature in individuals affected with IFIH1-related conditions. ClinVar contains an entry for this variant (Variation ID: 960982). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on IFIH1 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.
PreventionGenetics, part of Exact Sciences RCV003414034 SCV004107871 uncertain significance IFIH1-related disorder 2023-04-05 criteria provided, single submitter clinical testing The IFIH1 c.557G>C variant is predicted to result in the amino acid substitution p.Arg186Pro. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.0044% of alleles in individuals of European (Non-Finnish) descent in gnomAD (http://gnomad.broadinstitute.org/variant/2-163167340-C-G). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence.

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