CLCN1

Chr 7

chloride voltage-gated channel 1

Also known as: CLC1

The CLCN family of voltage-dependent chloride channel genes comprises nine members (CLCN1-7, Ka and Kb) which demonstrate quite diverse functional characteristics while sharing significant sequence homology. The protein encoded by this gene regulates the electric excitability of the skeletal muscle membrane. Mutations in this gene cause two forms of inherited human muscle disorders: recessive generalized myotonia congenita (Becker) and dominant myotonia (Thomsen). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Mar 2012]

GeneReviewsResearchGenerating clinical summary…

Primary Disease Associations & Inheritance

UniProtMyotonia congenita, autosomal dominant
UniProtMyotonia congenita, autosomal recessive
1
Active trials
21
Pubs (1 yr)
P/LP submissions
P/LP missense
0.99
LOEUF
Multiple*
Mechanism· predicted
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GeneReview available — CLCN1
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Some data sources returned errors (1)

omim: Error: OMIM fetch failed: 429

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint?
0.99LOEUF
pLI 0.000
Z-score 1.59
OE 0.76 (0.580.99)
Tolerant

Typical tolerance to LoF variation

Missense Constraint?
0.21Z-score
OE missense 0.97 (0.911.05)
529 obs / 542.9 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.76 (0.580.99)
00.351.4
Missense OE?0.97 (0.911.05)
00.61.4
Synonymous OE?1.04
01.21.6
LoF obs/exp: 37 / 49.0Missense obs/exp: 529 / 542.9Syn Z: -0.43

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

CLCN1 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.