Man1b1-Cdg, also known as carbohydrate deficient glycoprotein syndrome type ii due to man1b1 deficiency, is related to developmental and epileptic encephalopathy 36 and immunodeficiency 47. An important gene associated with Man1b1-Cdg is MAN1B1 (Mannosidase Alpha Class 1B Member 1). Affiliated tissues include skin and brain, and related phenotypes are intellectual disability and global developmental delay