Shuttle Pharmaceuticals, Inc. (USA) and POLA Pharma Inc. (Japan), today announced agreement to license the U.S. rights for doranidazole, a hypoxic cell radiation sensitizer, for clinical development in treating cancers in combination with stereotactic body radiation therapy (SBRT). SBRT is used to deliver large doses of radiation in a few treatments with precise targeting of cancers. Current radiation dose limitations, due to sensitive normal tissues that may surround a tumor, support a role for radiation sensitizers to enhance the effectiveness of radiation. Clinical trials to determination safety and efficacy of the combination of doranidazole and SBRT are proposed for treating patients with pancreatic, lung and liver cancers.