ArticleAnnals of Indian Academy of Neurology2026
Case Report of Andersen-Tawil Syndrome: Rare Presentation of a Rare Disease.
Article in Annals of Indian Academy of Neurology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Andersen-Tawil syndrome (ATS) is a rare genetic disorder characterized by a triad of periodic paralysis, cardiac arrhythmias, and dysmorphic features, typically presenting in the first two decades of life. A 45-year-old man presented with acute lower motor neuron-type quadriparesis. He reported similar self-resolving episodes over the past 2 years, triggered by rest after exercise. There were no cardiac symptoms, dysmorphic features, or relevant family history. Biochemical evaluation revealed hypokalemia. Genetic testing confirmed a heterozygous nonsense mutation in the KCNJ2 gene (c.13C>T, p.Arg5Ter). Cardiac and dental evaluations were normal. He was treated with potassium supplementation and later acetazolamide, with no recurrence over 2 years. This case highlights a rare adult-onset presentation of ATS without cardiac or dysmorphic features and a negative family history, contributing to the limited adult ATS literature.
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