ClinVar Miner

Submissions for variant NM_000083.3(CLCN1):c.1096G>T (p.Val366Leu)

dbSNP: rs1554436573
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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Athena Diagnostics Inc RCV000517339 SCV000612752 uncertain significance not specified 2017-01-25 criteria provided, single submitter clinical testing
Invitae RCV000811322 SCV000951582 uncertain significance Congenital myotonia, autosomal recessive form; Congenital myotonia, autosomal dominant form 2022-03-29 criteria provided, single submitter clinical testing This sequence change replaces valine, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 366 of the CLCN1 protein (p.Val366Leu). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with myotonia congenita (Invitae). ClinVar contains an entry for this variant (Variation ID: 447044). 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 CLCN1 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.

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