Rebecca Foulger commented on gene: DHDDS: Sabry et al (PMID:27343064) report a patient with DHDDS deficiency and epilepsy amongst his phenotypes. The patient died at 8 months during a status epilepticus. The patient was compound heterozygous for variants in the DHDDS gene. The patient is also homozygous for the c.911 T>C (p.F304S) ALG6 variant that occurs in about one third of the population and does not cause CDG (but is a disease modifier to exacerbate symptoms in patients with glycosylation pathway defects).