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Thyrotoxic periodic paralysis, susceptibility to, 1

Summary

Thyrotoxic periodic paralysis is a sporadic muscle disorder characterized by episodic attacks of weakness associated with hypokalemia in individuals with hyperthyroidism. The paralysis resolves upon treatment of hyperthyroidism. The disorder is most common among males of Asian descent, including Chinese, Japanese, Vietnamese, Filipino, and Koreans, although it occurs less commonly in individuals of Caucasian background. Thyrotoxic periodic paralysis is clinically similar to hereditary hypokalemic periodic paralysis (HOKPP; 170400), but the paralysis in TTPP occurs only in the presence of hyperthyroidism. TTPP can also be precipitated by factors that result in hypokalemia, such as carbohydrate ingestion and rest after exercise (review by Kung, 2006). Genetic Heterogeneity of Thyrotoxic Periodic Paralysis See also TTPP2 (613239), conferred by variation in the KCNJ18 gene (613236) on chromosome 17p11, and TTPP3 (614834), mapped to chromosome 17q24. [from OMIM]

Available tests

33 tests are in the database for this condition.

Clinical tests (33 available)

Molecular Genetics Tests

Genes See tests for all associated and related genes

  • Also known as: CACNL1A3, CCHL1A3, CMYO18, CMYP18, Cav1.1, DHPRM, HOKPP, HOKPP1, MHS5, TTPP1, hypoPP, CACNA1S
    Summary: calcium voltage-gated channel subunit alpha1 S

Clinical features

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Imported from Human Phenotype Ontology (HPO)

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