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Recent years has seen the discovery and description of genetic alterations responsible for oncogenesis in a wide variety of cancers, together with the finding that some markers are actionable and can be targeted by medications. Such developments have enabled cancer treatments to evolve from empirical palliative chemotherapy, with low chances of response or curative intent in most types of cancers, to targeted therapy, with some studies showing promising results in terms of improved overall response rates, overall survival and quality of life, although, like all new groups of medications, with specific adverse effect profiles. This treatment evolution is a major development in cancer therapy. Tumors were originally classified as solid or liquid tumors based on their location in the human body (solid organs or blood), which evolved into the medical specialties of medical oncology and clinical hematology, respectively …