Research into new forms of biologic therapy, such as immunotherapy or targeted therapy, have made dramatic advances in treating and managing cancer, but these therapies can be very expensive. You may be familiar with generic drugs, which are identical copies of brand-name drugs, and are often much cheaper. However, the manufacturing process for biologic therapies is so complex, it is not possible for a different manufacturer to make an identical copy.  In this podcast, Dr. Gary Lyman discusses biosimilar agents, which are similar, but not identical, copies of these drugs. Dr. Lyman discusses some of the differences in manufacturing biosimilar agents, the criteria that are used to ensure they are as effective as the original drug, and some of the ways that biosimilars can help reduce the cost of cancer care.