這個基因編碼一種可能抑制腫瘤的蛋白質。這種蛋白與乳腺癌2早發蛋白（BRCA2）在核病灶結合并與之共定位，可能允許BRCA2穩定的核內定位和積累。
This gene encodes a protein that may function in tumor suppression. This protein binds to and colocalizes with the breast cancer 2 early onset protein (BRCA2) in nuclear foci and likely permits the stable intranuclear localization and accumulation of BRCA2.