ClinVar Miner

Submissions for variant NM_021625.5(TRPV4):c.1174C>T (p.Arg392Trp)

gnomAD frequency: 0.00001  dbSNP: rs759501013
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Total submissions: 3
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Molecular Genetics Laboratory, London Health Sciences Centre RCV001173248 SCV001336331 uncertain significance Charcot-Marie-Tooth disease criteria provided, single submitter clinical testing
Ambry Genetics RCV004032948 SCV004972398 uncertain significance Inborn genetic diseases 2023-12-26 criteria provided, single submitter clinical testing The c.1174C>T (p.R392W) alteration is located in exon 7 (coding exon 6) of the TRPV4 gene. This alteration results from a C to T substitution at nucleotide position 1174, causing the arginine (R) at amino acid position 392 to be replaced by a tryptophan (W). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear.
Labcorp Genetics (formerly Invitae), Labcorp RCV005093734 SCV005830242 uncertain significance Charcot-Marie-Tooth disease axonal type 2C 2024-05-13 criteria provided, single submitter clinical testing This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 392 of the TRPV4 protein (p.Arg392Trp). This variant is present in population databases (rs759501013, gnomAD 0.02%). This missense change has been observed in individual(s) with Charcot-Marie-Tooth disease (PMID: 32376792). ClinVar contains an entry for this variant (Variation ID: 916985). 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 TRPV4 protein function with a positive predictive value of 95%. 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.

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