ClinVar Miner

Submissions for variant NM_152263.4(TPM3):c.272G>A (p.Arg91His)

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Total submissions: 1
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Labcorp Genetics (formerly Invitae), Labcorp RCV003058660 SCV003447993 likely pathogenic Congenital myopathy 4B, autosomal recessive; Congenital myopathy with fiber type disproportion 2022-07-03 criteria provided, single submitter clinical testing In summary, the currently available evidence indicates that the variant is pathogenic, but additional data are needed to prove that conclusively. Therefore, this variant has been classified as Likely Pathogenic. This variant disrupts the p.Arg91 amino acid residue in TPM3. Other variant(s) that disrupt this residue have been determined to be pathogenic (PMID: 19953533, 26307083). This suggests that this residue is clinically significant, and that variants that disrupt this residue are likely to be disease-causing. 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) performed at Invitae indicates that this missense variant is expected to disrupt TPM3 protein function. This variant has not been reported in the literature in individuals affected with TPM3-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 91 of the TPM3 protein (p.Arg91His).

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