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Our laboratory focuses on understanding how cells respond to DNA damage. Our research currently involves areas that interact with each other: repair of radiation damage, and transcriptional responses to DNA damage.

Mammalian DNA repair and DNA damage inducible responses; p53 tumor suppressor gene; transcription in nucleotide excision repair and mutagenesis; genetic determinants of cancer cell sensitivity to DNAdamage; genetics of inherited cancer susceptibility syndromes and human GI malignancies; clinical cancer genetics of BRCA1 and BRCA2 breast cancer and mismatch repair deficient colon cancer.

Application of Micro/Nanotechnology to Biological Systems.

Cancer genomics and genetics, translational applications of next generation sequencing technologies, development of molecular signatures as prognostic and predictive biomarkers in oncology, primary genomic and proteomic technology development

Interleukin-12 is a Th1 cytokine. It is important in the cell mediated immune response. We are investigating its role as an anti-tumor cytokine to augment the immune response against cancer. We are planning a human trial.

My research interests include disparities in surgical care and cancer outcomes; surgical quality improvement, public reporting and pay-for performance.

Multimodality treatment of rectal cancer Sphincter preserving procedures for rectal cancer Laparoscopic colon and rectal surgery Surgical education

Through a 3 pronged comprehensive program: translational and clinical research, early detection and treatment, and promoting education, awareness and immunization, we are working towards the development of new strategies that will lead to the elimination of hepatitis B worldwide and reduce the threat and incidence of liver cancer. Our current research efforts focus on evaluating potential new diagnostic and treatment markers and novel targeted therapy for primary liver cancer.

Clinical research focused on the diagnosis, prevention and treatment of anal cancer and its precursor lesions. Clinical trials of ablative therapy for High-grade Squamous Intraepithelial Lesions (HSIL) of the anus and perianal tissues as a means for preventing anal cancer. Basic science work in collaboration with Ronald Davis and Hanlee Ji focused on the molecular genetic and pathologic studies of anal cancers using moecular inversion probe genomic technology

Our research interests are primarily in surgical oncology, especially gastrointestinal cancers. We are also developing new research studies in surgical outcomes.