NECTIN4 and ovarian carcinoma: Given the putative function of Nectin 4—Ca2+-independent cellular adhesion—the anti-Nectin 4 antibody might have additional effects in ovarian cancer besides being “the Trojan horse for an antineoplastic substance”, i.e., potential direct effect through inhibition of the attachment of tumor cells on the peritoneal wall, which might inhibit local peritoneal tumor spread directly.