But, expression of MSI1 is increased in at least 40% of breast, prostate, and lung tumors and its profile is similar to oncogenes like FOS and HER2. Recently, some evidence represented that MSI1 promotes proliferation and preserves survival of cancer cells in different tumors like glioblastoma, hepatocellular carcinoma, and lung cancer. The gene discussed is ERBB2; the disease is lung cancer.