Reduced incidence of severe metabolic crisis or death in children with medium chain acyl-CoA dehydrogenase deficiency homozygous for c.985A>G identified by neonatal screening.

The incidence of severe metabolic crises in medium chain acyl-CoA dehydrogenase deficiency (MCADD) patients homozygous for the common c.985A>G mutation, who had been identified by neonatal screening, was assessed prospectively and compared to retrospective cohort data in unscreened patients with identical genotypes. Logrank test showed a significant reduction of severe metabolic crises in the screened cohort (p<0.01). Neonatal screening appears to reduce the rate of severe metabolic crisis or death in the most prevalent subset of MCADD.