The highest expression values for TGase 1 were observed in the adenocarcinoma cell lines SW480, SW620 and SW403, for TGase 3 in human endothelial cell lines (HAEC, HUVEC, HDMEC, hCMEC/D3), in melanoma cell lines (A375, MeWo, A2058, MelJuso) and in epidermoid (A-431) and squamous cell (FaDu) carcinoma cell lines, for TGase 6 in the breast cancer cell line MDA-MB-231 and in the endothelial cell line hCMEC/D3. The gene discussed is TGM3; the disease is breast cancer.