Recent applications of artificial intelligence-derived methods of computational design have permitted de novo creation of proteins that do not exist in nature but have potent effects on human cells and organ systems. These rapid procedures also allow in 1 step protein modifications that optimize function, potency, stability, resistance to biodegradation, cellular and tissue distribution and biological half-time. Such proteins generated to date include cytokines, antibodies, inhibitors of cell death proteins and antagonists of extracellular receptors for growth factors and viruses. Newly designed proteins have broad medical diagnostic and therapeutic potentials, as well as the capacity to alter many normal activities of human cells.