Dr. Haddad current research activity involves the use of concurrent and sequential chemoradiotherapy regimens for patients with locally advanced and metastatic head and neck cancer . He is leading numeous trials of novel agents in head and neck cancer , particularly in the areas of immunotherapy and novel biologic agents . Further, his research interests also include the role of the human papilloma virus (HPV) as a cause of head and neck cancer, particularly in the effect of such infection on treatment and prognosis and in the search for in HPV-related biomarkers that can be useful for early detection, risk stratification, and detection of early relapse. Dr. Haddad is a member of several professional societies, including the American Society of Clinical Oncology, American Association for Cancer Research, European Society of Medical Oncology , and the American Society for Therapeutic Radiology and Oncology. Dr. Haddad lectures extensively on head and neck cancer, both on the national, and international level.