Succinic acidaemia (Q102307)

Succinic acidemia has been described in two female sibs (the first sib died shortly after birth and the other was diagnosed at the fetal stage). The first sib also had lactic acidosis and respiratory distress. This is presumably an autosomal recessive disorder. NADH-cytochrome C reductase activity was significantly low in both cases and NADH-ferricyanide reductase activity was also low in the fetal case, suggesting a complex I deficiency of the electron transport system in the mitochondrial membrane.