TSPAN8 and neoplasm: This is important as CIC drive the metastatic process (87–90), where Tspan8 (86, 91) and associated α6β4 (92–94), CD44v6 (95, 96), and linked cMET1 (96, 97), CD184/CXCR41 that can associate with Tspan8 and CD44v6 (98–100), cldn7 (84, 101, 102), and associated EpCAM1 (84, 103, 104), LGR5/GPR491 (105, 106) and CD133/PROM11 (107, 108) are engaged in distinct steps of tumor progression.