An immunotherapy drug delivery system created at Yale that can carry multiple drugs inside a tiny particle is heading toward its first phase of clinical trials for a possible new treatment for cancer. The delivery system, a nanogel developed in the lab of associate professor Tarek Fahmy, can be used for multiple combinations of drugs for many different cancers and some immune disorders. The platform is designed to deliver multiple drugs with different chemical properties. A single particle can carry hundreds of drug molecules that concentrate in the tumor, increasing the efficacy of the drug combination while decreasing its toxicity. Fahmy describes the delivery system as a kind of "rational" therapy, in that it fuses established biological and clinical findings to the emerging field of nanotechnology. "It creates a new solution that could potentially deal a significant blow to cancer and even autoimmune disease in future applications," said Fahmy, who teaches biomedical engineering and immunobiology.