DPAGT1-CDG is a form of congenital disorders of N-linked glycosylation characterized by hypotonia, intractable seizures, developmental delay, microcephaly and severe fetal hypokinesia. Additional features that may be observed include apnea and respiratory deficiency, cataracts, joint contractures, vermian hypoplasia, dysmorphic features (esotropia, arched palate, micrognathia, finger clinodactyly, single flexion creases) and feeding difficulties. The disease is caused by loss-of-function mutations in the gene DPAGT1 (11q23.3). The disease is DPAGT1-congenital disorder of glycosylation (Monarch Disease Ontology entry MONDO_0011964). Also known as: CDG syndrome type Ij, CDG-Ij, CDG1J, CDGIj, DPAGT1-CDG, carbohydrate deficient glycoprotein syndrome type Ij, congenital disorder of glycosylation type 1j, congenital disorder of glycosylation type Ij.