26.11.2021 | Letter to the Editor
Pontocerebellar hypoplasia type-9 due to a novel p.Arg503Ter truncating variant in AMPD2: a report from India
verfasst von:
Vikram V. Holla, Shrunga Tejasvi, Rahul Reddy, Jitender Saini
Erschienen in:
Acta Neurologica Belgica
|
Ausgabe 1/2023
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Excerpt
Pontocerebellar hypoplasia type-9 (PCH9) is an autosomal recessive neurodegenerative disorder with a unique combination of microcephaly, hypoplasia of cerebellum and pons, hypoplastic to absent corpus callosum, and a “figure of 8” shape of the hypoplastic midbrain. PCH9 is caused by mutations in the
AMPD2 gene which encodes the adenosine monophosphate deaminase-2 (AMPD2) enzyme. To the best of our knowledge, around 33 cases of PCH-9 have been reported worldwide with predominantly missense variants and there is only one previous report from India [
1,
2]. This report describes a second case of genetically proven PCH9 from India with a classical clinical and radiological manifestation due to a novel homozygous nonsense variant in the
AMPD2 gene and located in previously uninvolved exon 11. …