This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Specific Cytogenetic Disorders, Subject name: Pathology
NARP syndrome is a pa of which of the following group of disorders? 
Select and explain. 
A. Mitochondrial diseases, B. Glycogen storage diseases, C. Lysosomal storage diseases, D. Lipid storage diseases
A: Mitochondrial diseases
Answer: A: Mitochondrial diseases 
Explanation: NARP syndrome Neuropathy, ataxia, and retinitis pigmentosa Related to changes in mitochondrial DNA. Mutations in the MT-ATP6 gene cause NARP syndrome. This gene is located within mitochondrial DNA (mtDNA).