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Importance of pedigree in patients with familial epilepsy and intellectual disability

Hüseyin Çaksen, Fesih Aktar, Gökçen Yıldırım, Serdar Ceylaner.




Abstract

In this study, we prospectively evaluated demographic characteristics, clinical findings and pedigree patterns in 70 patients with familial epilepsy and/or intellectual disability (ID)/global developmental delay (GDD) and/or motor retardation but without specific etiologic diagnosis to determine genetic inheritance patterns by using at least a 3-generation pedigree analysis to determine genetic inheritance patterns by using a comprehensive pedigree analysis. Mean age of the patients was 6.85±3.93 years and male/female ratio was 1.50. There was consanguinity between the parents of 47 (67.1%) patients. Only epilepsy was diagnosed in 14 patients; only ID/GDD in 22; epilepsy and ID/GDD in 9; epilepsy and ID/GDD and motor retardation in 25 patients. Genetic inheritance pattern was definitely determined in 60 (85.7%) patients, and most of patients (61.4%) displayed autosomal recessive inheritance. Based on our findings, we suggest that a 3-generation pedigree analysis should be obtained in all patients with familial neurological disorders including epilepsy, ID/GDD, and motor retardation etc., to optimize counseling, screening, and diagnostic testing.

Key words: Pedigree; Familial epilepsy; Intellectual disability






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