ASS1 and long chain 3-hydroxyacyl-CoA dehydrogenase deficiency: Examples resolved by WGS from the current study include deep intronic variants in ASS1 causing citrullinemia, deletion of a complete exon in ARG1 causing arginase deficiency, and uniparental disomy with homozygous pathogenic variants in PCCA and HADHA, causing propionic aciduria and LCHAD deficiency, respectively.