Abbreviations:
Leigh syndrome (LS), Cerebrospinal fluid (CSF), Magnetic resonance
imaging (MRI), Magnetic resonance spectroscopy (MRS), Nicotinamide
adenine dinucleotide hydrogen (NADH), Deep tendon reflex (DTR), Complete
blood count (CBC), Electroencephalogram (EEG), Generalized tonic clonic
(GTC), Lactate dehydrogenase (LDH), Anti-Neuromyelitis optica antibody
(NMO-Ab), High performance liquid chromatography (HPLC), Anti nucleotide
antibody (ANA), Anti- double stranded DNA (Anti-ds DNA), Anti-sjögren’s-
syndrome- related antigen A (Anti-SSA-RO and SSA-LA), Rapid Plasma
Reagin (RPR), Alpha fetoprotein (AFP), Anti-ganglioside antibody
(anti-GM antibody), Serum Angiotensin converting enzyme (ACE), Human
immunodeficiency virus (HIV), Venereal disease research laboratory test
(VDRL), 2-mercaptoethanol Brucella agglutination test (2ME).