NARP syndrome is a type of:: (A) Mitochondrial function disorder, (B) Glycogen storage disorder, (C) Lysosomal storage disorder, (D) Lipid storage disorder
Answer is A. NARP ( Neuropathy, Ataxia, Retinitis pigmentosa ) disease is associated with mitochondrial DNA point mutation at base pair 8993 causinga substitution of thymidine by guanine in the gene coding for the subunit 6 of ATP synthase. Ref: Clinical Pediatric Neurology By Ronald B. David, Page 304.