People are often remiss that the lack of medical research remains a critical problem until it personally impacts them with drastic consequences, such as severe illness with the potential consequence of death. CRISPR/Cas-9 technology is a recent revolutionary discovery in the science of gene modification. This research project studies the progress made in developing CRISPR systems to study cancer and the emerging adaptation of these technologies to improve diagnosis and treatment. Technology has given us a tool to change genetic material in living organisms by using a mechanism that was initially a defense system in bacteria. Despite covering CRISPR’s positive effects, it puts in front of us a huge responsibility to consider both the unintended consequences as well as the intended impacts of a scientific breakthrough.