Fluorescence-activated cell sorting (FACS) analysis showed that m12G1 antibody binds to various ovarian cancer cell lines, including OV-90, SK-OV-3, and Caov-3, in a dose-dependent manner, but not to Daudi cells, which is a nectin-2-negative cell line (Supplementary Figure S1C). This evidence concerns the gene NECTIN2 and ovarian carcinoma.