When lung cancer cells in which FGFRL1 had been silenced with siRNA were compared with lung cancer cells, migratory and invasive potential were enhanced; expression levels of N‐cadherin, vimentin, MMP‐9 and MMP‐1 increased; and E‐cadherin expression decreased (Figure 7A‐D). The gene discussed is MMP1; the disease is lung carcinoma.