According to our previous experiments, cytoplasmic dynein intermediate chain 1 (DYNC1I1) is associated with poor prognosis of gastric cancer and promoted proliferation and migration of gastric cancer cells both in vivo and in vitro.2 To study the specific underlying mechanism involved in the functional role of DYNC1I1 in gastric cancer, an affymetrix‐mediated scanning microarray of genome‐wide expression profiles after knockdown of DYNC1I1 was conducted. The gene discussed is DYNC1I1; the disease is gastric cancer.