{{Rsnum
|rsid=80356696
|Chromosome=7
|Orientation=plus
|geno1=(A;A)
|geno2=(A;G)
|geno3=(G;G)
|Gene=CLCN1
|position=143342001
|Assembly=GRCh38
|GenomeBuild=38.1
|dbSNPBuild=141
|Gene_s=CLCN1
}}{{omim
|id=118425
|rsnum=80356696
|variant=0007
}}{{ClinVar
|rsid=80356696
|Reversed=0
|FwdREF=A
|FwdALT=G
|REF=A
|ALT=G
|RSPOS=143039094
|CHROM=7
|dbSNPBuildID=131
|SSR=0
|SAO=1
|VP=0x050368000000000002110100
|GENEINFO=CLCN1:1180
|GENE_NAME=CLCN1
|GENE_ID=1180
|WGT=0
|VC=SNV
|CLNALLE=1
|CLNHGVS=NC_000007.13:g.143039094A>G
|CLNSRC=GeneReviews; OMIM Allelic Variant
|CLNORIGIN=0
|CLNSRCID=NBK1355; 118425.0007
|CLNSIG=5
|CLNCUI=C0027127
|CLNDBN=Myotonia levior; Myotonia congenita
|Disease=Myotonia levior; Myotonia congenita
|CLNACC=RCV000019090.26; RCV000020103.1
|Tags=PM;PMC;S3D;SLO;OTHERKG;LSD;OM
|CLNDSDB=MedGen; GeneReviews:MedGen:SNOMED_CT
|CLNDSDBID=C0270959; NBK1355:C0027127:57938005
}}{{PMID|7581380}} Myotonia levior is a chloride channel disorder.

{{PMID|12456816|OA=1
}} A novel alteration of muscle chloride channel gating in myotonia levior.