SLC35C1 and leukocyte adhesion deficiency type II: Mutations in a Golgi guanosine diphosphate-fucose transporter (GFTP) protein, which is encoded by the SLC35C1 (solute carrier family 35 member C1) gene, lead to LAD-II [145,146], which was reclassified as the congenital disorder of glycosylation-IIc (CDG-IIc) [147].