miR-637 is located in 19p13.3, the fifth intron of DAPK3.Since there is no study on the correlation between DAPK3 and miR-637, we have calculated the correlation of miR-637 and DAPK3 expression in lung cancer (GSE19804) and found that the miR-637 expression level was significantly correlated with DAPK3 (r = 0.56 and p < 0.001), indicating that miR-637 expression may depend on the host gene DAPK3. The gene discussed is DAPK3; the disease is lung cancer.