Kinase inhibitors are a class of drugs that block the action of kinases, which are enzymes responsible for the phosphorylation of proteins. This phosphorylation is a crucial step in several cellular processes, including cell division, metabolism, and apoptosis. Kinase inhibitors are primarily used in the treatment of cancer, as they can block the growth of cancer cells by inhibiting specific signaling pathways. However, their use in other diseases, such as inflammatory disorders and cardiovascular diseases, is also being explored.