Congenital Disorder of Glycosylation with Defective Fucosylation 2, also known as cdgf2, is related to congenital disorder of glycosylation, type in and congenital disorder of glycosylation with defective fucosylation 1. An important gene associated with Congenital Disorder of Glycosylation with Defective Fucosylation 2 is FCSK (Fucose Kinase). Affiliated tissues include brain, and related phenotypes are seizure and hypotonia