Preferred Label : Pontocerebellar hypoplasia, type 4;
Symbol : PCH4;
CISMeF acronym : PCH4;
Type : Phenotype, molecular basis known;
Alternative titles and symbols : Encephalopathy, fatal infantile, with olivopontocerebellar hypoplasia;
Description : Pontocerebellar hypoplasia (PCH) is a heterogeneous group of disorders characterized
by an abnormally small cerebellum and brainstem. Pontocerebellar hypoplasia type 4
(PCH4) is characterized by severe course and early lethality (Budde et al., 2008).
For a phenotypic description and a discussion of genetic heterogeneity of PCH, see
PCH1 (607596).;
Inheritance : Autosomal recessive;
Molecular basis : Caused by mutation in the tRNA splicing endonuclease, subunit 54 gene (TSEN54, 608755.0001);