RT Journal Article SR Electronic T1 Cerebral folate deficiency with developmental delay, autism, and response to folinic acid JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 1088 OP 1090 DO 10.1212/01.WNL.0000154641.08211.B7 VO 64 IS 6 A1 Moretti, P. A1 Sahoo, T. A1 Hyland, K. A1 Bottiglieri, T. A1 Peters, S. A1 del Gaudio, D. A1 Roa, B. A1 Curry, S. A1 Zhu, H. A1 Finnell, R. H. A1 Neul, J. L. A1 Ramaekers, V. T. A1 Blau, N. A1 Bacino, C. A. A1 Miller, G. A1 Scaglia, F. YR 2005 UL http://n.neurology.org/content/64/6/1088.abstract AB The authors describe a 6-year-old girl with developmental delay, psychomotor regression, seizures, mental retardation, and autistic features associated with low CSF levels of 5-methyltetrahydrofolate, the biologically active form of folates in CSF and blood. Folate and B12 levels were normal in peripheral tissues, suggesting cerebral folate deficiency. Treatment with folinic acid corrected CSF abnormalities and improved motor skills.