ClinVar Miner

Submissions for variant NM_022168.4(IFIH1):c.1322T>C (p.Ile441Thr)

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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 RCV002927292 SCV003259826 uncertain significance Singleton-Merten syndrome 1; Aicardi-Goutieres syndrome 7 2023-07-17 criteria provided, single submitter clinical testing This sequence change replaces isoleucine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 441 of the IFIH1 protein (p.Ile441Thr). This variant is present in population databases (rs764907514, gnomAD no frequency). This variant has not been reported in the literature in individuals affected with IFIH1-related conditions. This missense change has been observed in at least one individual who was not affected with IFIH1-related conditions (Invitae). ClinVar contains an entry for this variant (Variation ID: 2051493). 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.
Ambry Genetics RCV002904848 SCV003672054 uncertain significance Inborn genetic diseases 2022-12-21 criteria provided, single submitter clinical testing The c.1322T>C (p.I441T) alteration is located in exon 7 (coding exon 7) of the IFIH1 gene. This alteration results from a T to C substitution at nucleotide position 1322, causing the isoleucine (I) at amino acid position 441 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.

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