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Revista chilena de pediatría

versión impresa ISSN 0370-4106


RIVAS, Lucía et al. Pontocerebellar hypoplasia secondary to CASK gene deletion: Case report. Rev. chil. pediatr. [online]. 2017, vol.88, n.4, pp.529-533. ISSN 0370-4106.

Introduction: Pontocerebellar hypoplasia (PCH) is a reduction of the size of the cerebellum and pons secondary to an alteration in its development, and can be caused by neurodegenerative diseases of genetic origin, of which there are known 10 subtypes (PCH 1-10), cortical malformations, metabolic and genetic diseases. Objective: To present the case of a child with microcephaly, PCH and West syndrome, in which the genetic study allowed to make the diagnosis of a deletion on chromosome X. Case report: This is a female infant of 7-month at diagnosis, without family or obstetric history of interest, head circumference at birth -1.5 standard deviations (SD). She had little weight and growth in head circumference progression. In addition, physical examination revealed no fixating gaze, hypotonia with preserved deep tendon reflexes. Progressively developed refractary seizures. Brainsteam Auditory Evoked Potential demonstrated involvement of pontomesencefphalic ways and neuroimaging Pontocerebellar hypoplasia. The genetic study (aCGH) showed heterozygous deletion on the X chromosome, affecting the CASK gene. Conclusions: Given the wide differential diagnosis proposed at the PCH, new cytogenetic techniques have improved the classification of HPC and in some cases establish their etiology, so in these cases can provide appropriate genetic counseling to families.

Palabras clave : CASK gene; Intellectual disability; Microcephaly; Pontocerebellar hypoplasia; Psicomotor retardation; West Syndrome.

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