Online Mendelian Inheritance in Man

Last uploaded: August 28, 2024
Preferred Name

MYOTONIA CONGENITA, AUTOSOMAL RECESSIVE
Synonyms

MYOTONIA, GENERALIZED

BECKER DISEASE

ID

http://purl.bioontology.org/ontology/OMIM/255700

altLabel

MYOTONIA, GENERALIZED

BECKER DISEASE

cui

C0751360

Gene Locus

7q35

Gene Symbol

CLCN1

Has manifestation

http://purl.bioontology.org/ontology/OMIM/MTHU025981

http://purl.bioontology.org/ontology/OMIM/MTHU010823

http://purl.bioontology.org/ontology/OMIM/MTHU010829

http://purl.bioontology.org/ontology/OMIM/MTHU026511

http://purl.bioontology.org/ontology/OMIM/MTHU010828

http://purl.bioontology.org/ontology/OMIM/MTHU010824

http://purl.bioontology.org/ontology/OMIM/MTHU016378

http://purl.bioontology.org/ontology/OMIM/MTHU025982

http://purl.bioontology.org/ontology/OMIM/MTHU036443

http://purl.bioontology.org/ontology/OMIM/MTHU072456

http://purl.bioontology.org/ontology/OMIM/MTHU005259

http://purl.bioontology.org/ontology/OMIM/MTHU025980

http://purl.bioontology.org/ontology/OMIM/MTHU010825

MIMTYPEMEANING

Phenotype description, molecular basis known.

notation

255700

OMIM Entry Type

3

OMIM MimType Value

pound

prefLabel

MYOTONIA CONGENITA, AUTOSOMAL RECESSIVE

Scope Statement

Affected females report aggravation of symptoms during menstrual periods and pregnancy, with alleviation after menopause [MISCELLANEOUS]

Worldwide prevalence of 1/100,000 [MISCELLANEOUS]

Caused by mutation in the skeletal muscle chloride channel-1 gene (CLCN1, 118425.0001) [MOLECULAR BASIS]

See also autosomal dominant form (160800), which is less common and less severe [MISCELLANEOUS]

Myotonia improves with continued activity ('warm-up phenomenon') [MISCELLANEOUS]

Highly variable phenotype and severity [MISCELLANEOUS]

Myotonia is most pronounced in the extremities [MISCELLANEOUS]

Warm weather and alcohol are alleviating factors [MISCELLANEOUS]

Increased prevalence in Northern Finland (7.3/100,000) [MISCELLANEOUS]

Onset in childhood [MISCELLANEOUS]

Cold temperatures exacerbate symptoms [MISCELLANEOUS]

tui

T047

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