WFDC2, Epididymis-specific he4, Epididymal protein 4, DJ461P17.6, EDDM4, HE4, WAP5,,WFDC2
Expressed in a number of normal tissues, including male reproductive system, regions of the respiratory tract and nasopharynx. Highly expressed in a number of tumors cells lines, such ovarian, colon, breast, lung and renal cells lines. Initially described as being exclusively transcribed in the epididymis.