OR51B4 and colorectal cancer: In addition, OR2J3 activation induced apoptosis and inhibited cell proliferation in a non-small-cell lung cancer cell line (Kalbe et al., 2017); OR51B4 activation was found to have anti-proliferative, anti-migratory, and pro-apoptotic effects in colorectal cancer (Weber et al., 2017); and OR10H1 has been reported to play a role in bladder cancer (Weber et al., 2018).