Identification of a novel missense mutation in the ALDH7A1 gene in two unrelated Tunisian families with pyridoxine-dependent epilepsy.
Pyridoxine-dependent Epilepsy (PDE) is a rare autosomal recessive disorder causing intractable seizures in neonates and infants. It is characterized by seizures that are resistant to common anticonvulsants, but patients respond well to the administration of pyridoxine. PDE is caused by ALDH7A1 genetic defect. Here, we report the disease-causative variant in the ALDH7A1 gene in two affected Tunisian families. Direct sequencing analysis revealed a novel missense mutation c.1364T>C (p.Leu455Pro). Using bioinformatic tools we suggested that this variant may have deleterious effects on ALDH7A1 protein structure and function.
Laboratoire de Génétique Moléculaire Humaine, Faculté de Médecine de Sfax, Université de Sfax, Avenue Magida Boulila, 3029 Sfax, Tunisia. Abdelaziz.tlili@fss.rnu.tn
Abdelaziz
A
Tlili
Nadia
N
Hamida Hentati
Abdellatif
A
Gargouri
Faiza
F
Fakhfakh
D000444:Aldehyde Dehydrogenase / Q000235:genetics*; D000595:Amino Acid Sequence; D001483:Base Sequence; D004827:Epilepsy / Q000235:genetics*; D005190:Family; D006801:Humans; D008969:Molecular Sequence Data; D020125:Mutation, Missense; D010375:Pedigree; D016415:Sequence Alignment; D014416:Tunisia
C089507:ALDH7A1 protein, human; D000444:Aldehyde Dehydrogenase