Gillespie Syndrome (GLSP)

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OMIM 57 206700 Orphanet 59 ORPHA1065 UMLS via Orphanet 74 C0431401 ICD10 via Orphanet 34 G11.0

MedGen 42 C0431401 MeSH 44 D002524 D008607 D015783 SNOMED-CT via HPO 69 263681008 258211005 103606006 246635007 397540003 7973008 69278003 563001 228156007 247578003 91138005 85102008 398151007 398152000 224958001 16026008 289195008 102935005 77420001 56610005 128588008 198914002 36110001 95714006 60342002 more UMLS 73 C0431401

NIH Rare Diseases : ⁵³ The following summary is from Orphanet, a European reference portal for information on rare diseases and orphan drugs.Orpha Number: 1065Disease definitionAniridia-cerebellar ataxia-intellectual disabilitysyndrome, also known as Gillespie syndrome, is a rare, congenital, neurological disorder characterized by the association of partial bilateral aniridia with non-progressive cerebellar ataxia, and intellectual disability.EpidemiologyTo date, less than 30 patients have been reported in the literature.Clinical descriptionAniridia is visible at birth as fixed dilated pupils and is associated with photobia. It can be accompanied with additional ocular findings such as foveal, patchy iris and/or optic nerve hypoplasia, retinal hypopigmentation, and/or pigmentary macular changes leading to reduced visual acuity. Cataract and corneal opacities are never observed. Non-progressive cerebellar ataxia is associated with delayed developmental milestones and hypotonia (visible from the first year of life), gait and balance disorders with incoordination, intention tremor, and scanning speech. Intellectual disability is variable. Mild facial dysmorphic features may be observed such as high forehead, hypertelorism, epicanthic folds, depressed nasal bridge with anteverted nostrils, and thin upper lip. The cases referred to as atypical Gillespie syndrome correspond to those showing a more complex phenotype, associating additional ocular findings and a mild dysmorphic face.EtiologyThe etiology is unknown. Some atypical cases have been linked to mutations in the PAX6 gene (11p13), encoding a transcriptional regulator expressed in ocular, cerebral, olfactory, and pancreatic tissues. One case has also been reported to be due to a de novo translocation of chromosome X and 11 t(X;11) (p22.32;p12), but with no involvement of the PAX6 gene.Diagnostic methodsA presumptive diagnosis can be made in the first months of life: on slit lamp examination, the pupil border of the iris typically shows a scalloped, 'festooned' edge with iris strands extending onto the anterior lens surface at regular intervals. In many cases, neuroimaging studies (CT scan, MRI) show cerebellar hypoplasia or atrophy, especially of the vermis, with occasional white matter changes, and diffuse atrophy of the cerebral hemispheres, brainstem and frontal cortex.Differential diagnosisDifferential diagnosis includes Marinesco-Sjögren syndrome (see this term) in which congenital cataract is present, as well as cerebellar ataxia, intellectual disability, and aniridia (see this term).Genetic counselingSporadic and familial cases have been observed. Although some reported families are compatible with autosomal dominant inheritance, Gillespie syndrome is more likely to be an autosomal recessive condition.Management and treatmentManagement includes regular ophthalmologic evaluation with prescription of optical aids, physical, speech and occupational therapy for muscular re-education.PrognosisThere are no reports on the natural history of the disease. Prognosis depends on the proper management and anticipation of ocular and mental symptoms and disabilities.Visit the Orphanet disease page for more resources.

MalaCards based summary : Gillespie Syndrome, also known as aniridia, cerebellar ataxia, and mental retardation, is related to aniridia 1 and aniridia and absent patella, and has symptoms including ataxia, cerebellar ataxia and static tremor. An important gene associated with Gillespie Syndrome is ITPR1 (Inositol 1,4,5-Trisphosphate Receptor Type 1), and among its related pathways/superpathways are fMLP Pathway and Transcriptional Regulatory Network in Embryonic Stem Cell. Affiliated tissues include eye, and related phenotypes are intellectual disability and ataxia

Genetics Home Reference : ²⁵ Gillespie syndrome is a disorder that involves eye abnormalities, problems with balance and coordinating movements (ataxia), and mild to moderate intellectual disability.

OMIM : ⁵⁷ Gillespie syndrome is usually diagnosed in the first year of life by the presence of fixed dilated pupils in a hypotonic infant. Affected individuals have a characteristic form of iris hypoplasia in which the pupillary border of the iris exhibits a scalloped or 'festooned' edge, with iris strands extending onto the anterior lens surface at regular intervals. The key extraocular features of Gillespie syndrome are congenital hypotonia, progressive cerebellar hypoplasia, and ataxia, as well as variable cognitive impairment that is usually mild (summary by Gerber et al., 2016 and McEntagart et al., 2016). (206700)

UniProtKB/Swiss-Prot : ⁷⁵ Gillespie syndrome: A rare disease characterized by bilateral iris hypoplasia, congenital hypotonia, non-progressive ataxia, progressive cerebellar atrophy, and mental retardation.

Wikipedia : ⁷⁶ Gillespie syndrome, also called aniridia, cerebellar ataxia and mental deficiency. is a rare genetic... more...

Clinical features from OMIM:

206700

Search Clinical Trials , NIH Clinical Center for Gillespie Syndrome

Search GEO for disease gene expression data for Gillespie Syndrome.