Shuttle Pharmaceuticals Holdings Inc. Shuttle Pharmaceuticals Holdings Inc is a clinical-stage pharmaceutical company leveraging its proprietary technology to develop novel therapies designed to cure cancers. The company's goal is to extend the benefits of cancer treatments with surgery, radiation therapy, chemotherapy and immunotherapy. Radiation therapy (RT) is one of the effective modalities for treating cancers. It is developing a pipeline of products designed to address the limitations of the current cancer therapies as well as to extend to the new applications of RT. The company believes that its product candidates will enable the company to deliver cancer treatments that are safer, more reliable and at a greater scale than that of the current standard of care.