ClinVar Miner

Submissions for variant NM_002180.3(IGHMBP2):c.389G>A (p.Arg130Gln)

gnomAD frequency: 0.00004  dbSNP: rs150123428
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Invitae RCV000796809 SCV000936337 uncertain significance Autosomal recessive distal spinal muscular atrophy 1; Charcot-Marie-Tooth disease axonal type 2S 2023-06-30 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. 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 not expected to disrupt IGHMBP2 protein function. ClinVar contains an entry for this variant (Variation ID: 643169). This variant has not been reported in the literature in individuals affected with IGHMBP2-related conditions. This variant is present in population databases (rs150123428, gnomAD 0.02%). This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 130 of the IGHMBP2 protein (p.Arg130Gln).
Molecular Genetics Laboratory, London Health Sciences Centre RCV001173573 SCV001336671 uncertain significance Charcot-Marie-Tooth disease criteria provided, single submitter clinical testing
Ambry Genetics RCV002360930 SCV002624390 uncertain significance Inborn genetic diseases 2020-06-18 criteria provided, single submitter clinical testing The p.R130Q variant (also known as c.389G>A), located in coding exon 3 of the IGHMBP2 gene, results from a G to A substitution at nucleotide position 389. The arginine at codon 130 is replaced by glutamine, an amino acid with highly similar properties. This amino acid position is not well conserved in available vertebrate species, and glutamine is the reference amino acid in other vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear.

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