2022, Number 3
CACNA1S pathogenic variant as a cause of hypokalemic periodic paralysis
Language: Spanish
References: 15
Page: 112-116
PDF size: 210.41 Kb.
ABSTRACT
Introduction: we present the case of a patient with hypokalemic periodic paralysis (HPP), which is a type of muscular channelopathy caused by a genetic alteration. Clinical case: a 13-year-old male adolescent with no significant family history. He started with episodes of flaccid paralysis of the four extremities upon awakening, the duration was variable, and without compromise of mental functions. In one of the episodes, severe hypokalemia (1.6 mmol/L) was documented, with recovery after electrolyte correction. HPP was suspected, requesting a genetic panel in which a heterozygous pathogenic variant was identified in the CACNA1S gene, classifying it as type 1 HPPH. Conclusions: HPP is a diagnostic and therapeutic challenge; its early identification can help to reduce comorbidities in these patients.REFERENCES
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Elbaz A, Vale-Santos J, Jurkat-Rott K, Lapie P, Ophoff RA, Bady B et al. Hypokalemic periodic paralysis and the dihydropyridine receptor (CACNLIA3): genotype/phenotype correlations for two predominant mutations and evidence for the absence of a founder effect in 16 caucasian families. Am J Hum Genet. 1995; 56(2): 374-380.
Gonsalves SG, Dirksen RT, Sangkuhl K, Pulk R, Alvarellos M, Vo T et al. Clinical pharmacogenetics implementation consortium (CPIC) guideline for the use of potent volatile anesthetic agents and succinylcholine in the context of RYR1 or CACNA1S genotypes Stephen. Clin Pharmacol Ther. 2019; 105(6): 1338-1344.