Annals of neurology · 2006
AHI1 gene mutations cause specific forms of Joubert syndrome-related disorders.
Сравнительное исследованиеСтатьяПоддержка NIH: внешняя программаПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Valente Enza Maria, Brancati Francesco, Silhavy Jennifer L, Castori Marco, Marsh Sarah E, Barrano Giuseppe, Bertini Enrico, Boltshauser Eugen, Zaki Maha S, Abdel-Aleem Alice, Abdel-Salam Ghada M H, Bellacchio Emanuele, Battini Roberta, Cruse Robert P, Dobyns William B, Krishnamoorthy Kalpathy S, Lagier-Tourenne Clotilde, Magee Alex, Pascual-Castroviejo Ignacio, Salpietro Carmelo D, Sarco Dean, Dallapiccola Bruno, Gleeson Joseph G, International JSRD Study Group
Аннотация
OBJECTIVE: Joubert syndrome (JS) is a recessively inherited developmental brain disorder with several identified causative chromosomal loci. It is characterized by hypoplasia of the cerebellar vermis and a particular midbrain-hindbrain "molar tooth" sign, a finding shared by a group of Joubert syndrome-related disorders (JSRDs), with wide phenotypic variability. The frequency of mutations in the first positionally cloned gene, AHI1, is unknown.
METHODS: We searched for mutations in the AHI1 gene among a cohort of 137 families with JSRD and radiographically proven molar tooth sign.
RESULTS: We identified 15 deleterious mutations in 10 families with pure JS or JS plus retinal and/or additional central nervous system abnormalities. Mutations among families with JSRD including kidney or liver involvement were not detected. Transheterozygous mutations were identified in the majority of those without history of consanguinity. Most mutations were truncating or splicing errors, with only one missense mutation in the highly conserved WD40 repeat domain that led to disease of similar severity.
INTERPRETATION: AHI1 mutations are a frequent cause of disease in patients with specific forms of JSRD.
METHODS: We searched for mutations in the AHI1 gene among a cohort of 137 families with JSRD and radiographically proven molar tooth sign.
RESULTS: We identified 15 deleterious mutations in 10 families with pure JS or JS plus retinal and/or additional central nervous system abnormalities. Mutations among families with JSRD including kidney or liver involvement were not detected. Transheterozygous mutations were identified in the majority of those without history of consanguinity. Most mutations were truncating or splicing errors, with only one missense mutation in the highly conserved WD40 repeat domain that led to disease of similar severity.
INTERPRETATION: AHI1 mutations are a frequent cause of disease in patients with specific forms of JSRD.
Предметные рубрики MeSH
Adaptor Proteins, Signal TransducingAdaptor Proteins, Vesicular TransportAdolescentAdultAnimalsBrain DiseasesBrain StemChildChild, PreschoolChromosome DisordersDNA Mutational AnalysisDevelopmental DisabilitiesFamily HealthFemaleGene FrequencyHumansInfantMagnetic Resonance ImagingMaleModels, MolecularMutationPolymorphism, Genetic