Additional Study Information: This study will explore an investigational drug called LY3405105. "Investigational" means that the drughas not been approved by the United States Food and Drug Administration (FDA). The purpose of thisstudy is to learn about: Whether LY3405105 besylate can help study participants with advanced solid tumors; The safety of LY3405105 besylate and any side effects study participants might have; How much LY3405105 besylate should be given to study participants. Cancers may include: breast cancer, lung cancer, soft tissue sarcoma, thyroid cancer, ovarian cancer, pancreatic cancer, stomach cancer, liver cancer, melanoma, and prostate cancer.