Mutations in BCKD-kinase Lead to a Potentially Treatable Form of Autism with Epilepsy


Novarino G., El-Fishawy P., Kayserili H. , Meguid N. A. , Scott E. M. , Schroth J., ...Daha Fazla

SCIENCE, cilt.338, sa.6105, ss.394-397, 2012 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 338 Konu: 6105
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1126/science.1224631
  • Dergi Adı: SCIENCE
  • Sayfa Sayıları: ss.394-397

Özet

Autism spectrum disorders are a genetically heterogeneous constellation of syndromes characterized by impairments in reciprocal social interaction. Available somatic treatments have limited efficacy. We have identified inactivating mutations in the gene BCKDK (Branched Chain Ketoacid Dehydrogenase Kinase) in consanguineous families with autism, epilepsy, and intellectual disability. The encoded protein is responsible for phosphorylation-mediated inactivation of the E1 alpha subunit of branched-chain ketoacid dehydrogenase (BCKDH). Patients with homozygous BCKDK mutations display reductions in BCKDK messenger RNA and protein, E1 alpha phosphorylation, and plasma branched-chain amino acids. Bckdk knockout mice show abnormal brain amino acid profiles and neurobehavioral deficits that respond to dietary supplementation. Thus, autism presenting with intellectual disability and epilepsy caused by BCKDK mutations represents a potentially treatable syndrome.