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Neurobiol Aging ; 123: 200-207, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36549973

RESUMO

Genetic risk for amyotrophic lateral sclerosis (ALS) is highly elevated in genetic isolates, like the island population of Malta in the south of Europe, providing a unique opportunity to investigate the genetics of this disease. Here we characterize the clinical phenotype and genetic profile of the largest series of Maltese ALS patients to date identified throughout a 5-year window. Cases and controls underwent neuromuscular assessment and analysis of rare variants in ALS causative or risk genes following whole-genome sequencing. Potentially damaging variants or repeat expansions were identified in more than 45% of all patients. The most commonly affected genes were ALS2, DAO, SETX and SPG11, an infrequent cause of ALS in Europeans. We also confirmed a significant association between ATXN1 intermediate repeats and increased disease risk. Damaging variants in major ALS genes C9orf72, SOD1, TARDBP and FUS were however either absent or rare in Maltese ALS patients. Overall, our study underscores a population that is an outlier within Europe and one that represents a high percentage of genetically explained cases.


Assuntos
Esclerose Lateral Amiotrófica , Predisposição Genética para Doença , Humanos , Predisposição Genética para Doença/genética , Estudos de Associação Genética , Esclerose Lateral Amiotrófica/genética , Esclerose Lateral Amiotrófica/epidemiologia , Malta/epidemiologia , Fenótipo , Proteína C9orf72/genética , Superóxido Dismutase-1/genética , Mutação/genética , DNA Helicases/genética , RNA Helicases/genética , Enzimas Multifuncionais/genética , Proteínas/genética
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