Creatine Transporter Deficiency in Two Brothers with Autism Spectrum Disorder
Date
2018
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Abstract
Creatine transporter deficiency (CTD) is a treatable, X-linked, inborn error of metabolism.
Two brothers with autism spectrum disorder were diagnosed with CTD at the ages of 17 and 12 years. Both were found to have a previously reported hemizygous p.408delF (c.1216_1218delTTC) deletion mutation.
Both patients were given creatine monohydrate, L-arginine, L-glycine and S-adenosylmethionine, which partially improved the behavioral problems.
Serum creatinine levels, creatine peak at brain MR spectroscopy or creatine/creatinine ratio in urine should be evaluated to identify CTD in children with autistic behavior and language disorders.
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Keywords
Creatine deficiency syndrome, Inborn errors of metabolism, SLC6A8