The study investigated Citrin deficiency in neonates from Henan province, China, screening 986,565 infants to determine its prevalence, clinical features, and genetic variations.
Nine cases were diagnosed, all showing elevated citrulline levels, with six genetic variants identified, including both known and previously unreported mutations.
Post-treatment, all patients showed significant clinical improvement and normalizing amino acid profiles, leading to a favorable prognosis by mid-2022.