POSTN overexpression promotes proliferation and migration in A549 lung cancer cells (Hong et al., 2010) and enhances proliferation in gastric cancer cell lines (Kikuchi et al., 2014), and recombinant POSTN and POSTN derived from normal human dermis stimulate melanoma cell proliferation (Kotobuki et al., 2014). The gene discussed is POSTN; the disease is lung carcinoma.