https://orcid.org/0000-0002-8525-3319Dr. Hosni's research extends his research focus from his MSc and Ph.D., and is aligned with his training and clinical expertise in head and neck, and gastrointestinal malignancies. He has a broad interest in clinical and experimental radiobiology with specific focus on the radiobiological principles that derive the tumor response and treatment-related toxicity. His research is centered on developing optimal radiation therapeutic approach, use of advances in radiation therapy delivery, and uncovering novel biomarkers of radiation response and toxicities.