Our recent study showed that MUC4 is expressed in above 95% of ovarian tumours (Chauhan et al, 2006); however, it was not detected in the majority of cell lines that were screened (SKOV3, OVCAR3, OVCAR5, OVCAR8, A2780, COV362.4, COV 664, COV434, KGN, SB247, etc.). Here, MUC4 is linked to ovarian neoplasm.