Our results are in accordance with the results found with breast cancer cells9 and B-Raf-mutated melanoma cells.40 We also found that bortezomib treatment resulted in p62 accumulation in hepatocellular carcinoma HepG2 cells and endometrial cancer Ishikawa cells, indicating that autophagic flux was blocked by bortezomib. The gene discussed is SQSTM1; the disease is endometrial cancer.