We also evaluated the effects of the mitosis inhibitor monomethyl auristatin E (MMAE), which is the cytotoxic part of a NECTIN4-targeted ADC, on the viability of normal endothelial cells (HUVEC, HDMEC, and HDBEC) and angiosarcoma cells (HAMON and ISO-HAS-B). This evidence concerns the gene NECTIN4 and angiosarcoma.