Phenotypic Spectrum and Natural History of Gillespie Syndrome. An Updated Literature Review with 2 New Cases.
ITPR1
Aniridia
Cerebellar ataxia
Congenital ataxia
Gillespie
Journal
Cerebellum (London, England)
ISSN: 1473-4230
Titre abrégé: Cerebellum
Pays: United States
ID NLM: 101089443
Informations de publication
Date de publication:
23 Aug 2024
23 Aug 2024
Historique:
accepted:
14
08
2024
medline:
23
8
2024
pubmed:
23
8
2024
entrez:
23
8
2024
Statut:
aheadofprint
Résumé
Gillespie syndrome is a rare disorder caused by pathogenic variants in ITPR1 gene and characterized by the typical association of cerebellar ataxia, bilateral aniridia and intellectual disability. Since its first description in 1965, less than 100 patients have been reported and only 30 with a molecular confirmation. We present two additional cases, both carrying a loss-of-function variant in the Gly2539 amino acid residue. We describe the clinical evolution of the patients, one of whom is now 17 years old, and discuss the updated phenotypic spectrum of the disorder. The study gives an overview on the condition, allowing to confirm important data, such as an overall positive evolution of development (with some patient not presenting intellectual disability), a clinical stability of the neurological signs (regardless of a possible progression of cerebellar atrophy) and ocular aspects, and a low prevalence of general health comorbidities. Data about development and the observation of middle-aged patients lend support to the view that Gillespie is to be considered a non-progressive cerebellar ataxia, making this concept a key point for both clinicians and therapists, and for the families.
Sections du résumé
BACKGROUND
BACKGROUND
Gillespie syndrome is a rare disorder caused by pathogenic variants in ITPR1 gene and characterized by the typical association of cerebellar ataxia, bilateral aniridia and intellectual disability. Since its first description in 1965, less than 100 patients have been reported and only 30 with a molecular confirmation.
METHODS
METHODS
We present two additional cases, both carrying a loss-of-function variant in the Gly2539 amino acid residue. We describe the clinical evolution of the patients, one of whom is now 17 years old, and discuss the updated phenotypic spectrum of the disorder.
RESULTS
RESULTS
The study gives an overview on the condition, allowing to confirm important data, such as an overall positive evolution of development (with some patient not presenting intellectual disability), a clinical stability of the neurological signs (regardless of a possible progression of cerebellar atrophy) and ocular aspects, and a low prevalence of general health comorbidities.
DISCUSSION
CONCLUSIONS
Data about development and the observation of middle-aged patients lend support to the view that Gillespie is to be considered a non-progressive cerebellar ataxia, making this concept a key point for both clinicians and therapists, and for the families.
Identifiants
pubmed: 39177731
doi: 10.1007/s12311-024-01733-7
pii: 10.1007/s12311-024-01733-7
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Informations de copyright
© 2024. The Author(s).
Références
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