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2022, Number 3

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Rev Mex Pediatr 2022; 89 (3)

CACNA1S pathogenic variant as a cause of hypokalemic periodic paralysis

Bermejo-Padilla S, León-Torres K, Prieto-Rivera JC, Espinosa-García E
Full text How to cite this article 10.35366/109308

DOI

DOI: 10.35366/109308
URL: https://dx.doi.org/10.35366/109308

Language: Spanish
References: 15
Page: 112-116
PDF size: 210.41 Kb.


Key words:

adolescent, CACNA1S, channelopathy, hypokalemia, periodic paralysis.

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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Rev Mex Pediatr. 2022;89