3‐(4,5‐dimethylthylthiazol‐2‐yl)‐2 (MTT) and colony formation assays revealed that the lentivirus‐mediated knockdown of EIF3D suppresses cell proliferation in the ovarian tumour cell lines CAOV‐3 and SKOV‐3. The gene discussed is EIF3D; the disease is ovarian neoplasm.