Molecular basis : Caused by mutation in the mitochondrial ribosomal protein S2 gene (MRPS2, 611971.0001);
Laboratory abnormalities : 2-oxoglutaric aciduria; Increased excretion of Krebs cycle intermediates; Variably decreased activities of mitochondrial respiratory complexes I, III, and IV
in different tissues; Increased lactate; Increased alanine;