該基因編碼癌相關抗原，是一個家族的成員，至少包含兩種I型膜蛋白。這種抗原在大多數正常上皮細胞和胃腸道癌上表達，并作為一種同型鈣依賴性細胞粘附分子發揮作用。該抗原正被用作人類癌免疫治療的靶點。該基因突變導致先天性叢生性腸病。
This gene encodes a carcinoma-associated antigen and is a member of a family that includes at least two type I membrane proteins. This antigen is expressed on most normal epithelial cells and gastrointestinal carcinomas and functions as a homotypic calcium-independent cell adhesion molecule. The antigen is being used as a target for immunotherapy treatment of human carcinomas. Mutations in this gene result in congenital tufting enteropathy.