Navigation Menu

Clinical Trial External Search

Children (age < 18 years)
Adults (age >= 18 years)

Researcher Profile

Researcher Display

Karam El-Bayoumy, PhD

Karam El-Bayoumy, PhD

Distinguished Professor, Department of Biochemistry and Molecular Biology
Penn State Center for Research on Tobacco and Health
Scientific Program:Mechanisms of Carcinogenesis

Research Interests

The overall goals of Dr. Karam El-Bayoumy’s research are to understand the mechanisms at the cellular and molecular levels that can account for cancer induction and develop biomarkers for early detection. For more than 30 years, his laboratory has been funded from NCI, NIEHS, NIDCR, DOD and The Komen Foundation, and he has more than 240 peer-reviewed publications.

Dr. El-Bayoumy’s research is focused on the prevention of tobacco and environmentally-related cancers by various synthetic and naturally-occurring chemopreventive agents, combined with dietary manipulation initially in preclinical model systems, then translates the findings into clinical cancer prevention initiatives. He discovered novel chemopreventive selenium compounds against the development of several cancers in preclinical animal models and showed for the first time that selenized yeast reduced oxidative stress in healthy men.

His team demonstrated, using a novel animal model developed in his lab, that black raspberry (BRB) inhibited DNA damage, mutagenesis and oral squamous cell carcinoma (OSCC) induced by the tobacco smoke constituent dibenzo[a,l]pyrene (DB[a,l]P) in the mouse oral cavity; he also reported that BRB enhanced DNA repair of bulky lesions induced by chemical DB[a,l]P and physical (UV) carcinogens. His team also showed that hypomethylated Fgf3 (a gene frequently amplified in OSCC and is involved in epithelial mesenchymal transition) is a potential biomarker for early detection of OSCC; this gene was altered by BRB in a manner consistent with its chemopreventive action.

Dr. El-Bayoumy focuses on developing highly effective chemopreventive agents against tobacco smoke inducing lung cancer and developing biomarkers for early detection in noninvasive fluids indicative of cigarette smoking using various proteomic approaches.

During the last decade, he has been focusing on understanding the mechanistic role of Omega-3 fatty acids in breast cancer prevention in preclinical and clinical studies as well as developing novel liposomal formulation as an effective strategy to deliver select chemopreventive agents.

  • Neoplasms
  • Carcinogenesis
  • Selenium
  • Carcinogens
  • 1,4-phenylenebis(methylene)selenocyanate
  • Breast Neoplasms
  • Lung
  • Breast
  • Organoselenium Compounds
  • DNA
  • Tobacco
  • Chemoprevention

Clinical Trials

Effect of oral black raspberry administration on oral cell DNA adducts in smokers

Recent Publications


Chen, KM, Sun, YW, Krebs, NM, Reinhart, L, Sun, D, Liao, J, Cook, R, Bond, PE, Mallery, SR & El-Bayoumy, K 2024, 'The Effects of Black Raspberry as a Whole Food–Based Approach on Biomarkers of Oxidative Stress in Buccal Cells and Urine of Smokers', Cancer Prevention Research, vol. 17, no. 4, pp. 157-167.


Manni, A, Sun, YW, Schell, TD, Lutsiv, T, Thompson, H, Chen, KM, Aliaga, C, Zhu, J & El-Bayoumy, K 2023, 'Complementarity between Microbiome and Immunity May Account for the Potentiating Effect of Quercetin on the Antitumor Action of Cyclophosphamide in a Triple-Negative Breast Cancer Model', Pharmaceuticals, vol. 16, no. 10, 1422.
Chen, K-M, Sun, Y-W, Hu, J, Balogh, K, Gowda, K, Aliaga, C, Sun, D, Christensen, N, Amin, S & El-Bayoumy, K 2023, 'Gender Difference in DNA Damage Induced by the Environmental Carcinogen Dibenzo[def,p]chrysene Individually and in Combination with Mouse Papillomavirus Infection in the Mouse Oral Cavity', ACS Omega.
Brendle, SA, Li, JJ, Walter, V, Schell, T, Kozak, M, Balogh, KK, Lu, S, Christensen, ND, Zhu, Y, El-Bayoumy, K & Hu, J 2023, 'Immune Responses in Oral Papillomavirus Clearance in the MmuPV1 Mouse Model', Pathogens, vol. 12, no. 12, 1452.
Manni, A & El-Bayoumy, K 2023, 'Lifestyle Modifications and Breast Cancer Risk', Cancers, vol. 15, no. 11, 2870.


El-Bayoumy, K 2022, Animal studies of tobacco and cancer. in Tobacco And Cancer: The Science And The Story. World Scientific Publishing Co. Pte Ltd, pp. 75-100.
Chen, KM, Sun, YW, Sun, D, Gowda, K, Amin, S & El-Bayoumy, K 2022, 'Black Raspberry Extract Enhances Glutathione Conjugation of the Fjord-Region Diol Epoxide Derived from the Tobacco Carcinogen Dibenzo[ def, p]chrysene in Human Oral Cells', Chemical research in toxicology, vol. 35, no. 11, pp. 2152-2159.
Thompson, HJ, Neil, ES, McGinley, JN, Fitzgerald, VK, El Bayoumy, K & Manni, A 2022, 'Building a foundation for precision onco-nutrition: Docosahexaenoic acid and breast cancer', Cancers, vol. 14, no. 1, 157.
Chen, KM, Sun, YW, Krebs, NM, Sun, D, Krzeminski, J, Reinhart, L, Gowda, K, Amin, S, Mallery, S, Richie, JP & El-Bayoumy, K 2022, 'Detection of DNA adducts derived from the tobacco carcinogens, benzo[a]pyrene and dibenzo[def,p]chrysene in human oral buccal cells', Carcinogenesis, vol. 43, no. 8, pp. 746-753.
Penning, TM, Su, AL & El-Bayoumy, K 2022, 'Nitroreduction: A Critical Metabolic Pathway for Drugs, Environmental Pollutants, and Explosives', Chemical research in toxicology, vol. 35, no. 10, pp. 1747-1765.
Su, AL, Mesaros, CA, Krzeminski, J, El-Bayoumy, K & Penning, TM 2022, 'Role of Human Aldo-Keto Reductases in the Nitroreduction of 1-Nitropyrene and 1,8-Dinitropyrene', Chemical research in toxicology, vol. 35, no. 12, pp. 2296-2309.
Sales, AH, Kolbanovskiy, M, Geacintov, NE, Chen, KM, Sun, YW & El-Bayoumy, K 2022, 'Treatment of Human HeLa Cells with Black Raspberry Extracts Enhances the Removal of DNA Lesions by the Nucleotide Excision Repair Mechanism', Antioxidants, vol. 11, no. 11, 2110.
El-Bayoumy, K & Stoner, G 2022, 'Use of Freeze-dried Watercress for Detoxification of Carcinogens and Toxicants in Smokers: Implications of the Findings and Potential Opportunities', Cancer Prevention Research, vol. 15, no. 3, pp. 139-141.


Stairs, DB, Landmesser, ME, Aliaga, C, Chen, KM, Sun, YW & El-Bayoumy, K 2021, 'Black raspberry restores the expression of the tumor suppressor p120ctn in the oral cavity of mice treated with the carcinogen dibenzo[a,l] pyrene diol epoxide', PloS one, vol. 16, no. 11 November, e0259998.
Sun, YW, Chen, KM, Atkins, H, Aliaga, C, Gordon, T, Guttenplan, JB & El-Bayoumy, K 2021, 'Effects of E-Cigarette Aerosols with Varying Levels of Nicotine on Biomarkers of Oxidative Stress and Inflammation in Mice', Chemical research in toxicology, vol. 34, no. 4, pp. 1161-1168.
Chen, KM, Thompson, H, Vanden-Heuvel, JP, Sun, YW, Trushin, N, Aliaga, C, Gowda, K, Amin, S, Stanley, B, Manni, A & El-Bayoumy, K 2021, 'Lipoxygenase catalyzed metabolites derived from docosahexaenoic acid are promising antitumor agents against breast cancer', Scientific reports, vol. 11, no. 1, 410.


El-Bayoumy, K, Christensen, ND, Hu, J, Viscidi, R, Stairs, DB, Walter, V, Chen, KM, Sun, YW, Muscat, JE & Richie, JP 2020, 'An integrated approach for preventing oral cavity and oropharyngeal cancers: Two etiologies with distinct and shared mechanisms of carcinogenesis', Cancer Prevention Research, vol. 13, no. 8, pp. 649-660.
Chen, KM, Sun, YW, Kawasawa, YI, Salzberg, AC, Zhu, J, Gowda, K, Aliaga, C, Amin, S, Atkins, H & El-Bayoumy, K 2020, 'Black raspberry inhibits oral tumors in mice treated with the tobacco smoke constituent dibenzo(def,p)chrysene via genetic and epigenetic alterations', Cancer Prevention Research, vol. 13, no. 4, pp. 357-365.
Christensen, ND, Chen, KM, Hu, J, Stairs, DB, Sun, YW, Aliaga, C, Balogh, KK, Atkins, H, Shearer, D, Li, J, Brendle, SA, Gowda, K, Amin, S, Walter, V, Viscidi, R & El-Bayoumy, K 2021, 'The environmental pollutant and tobacco smoke constituent dibenzo[def,p]chrysene is a co-factor for malignant progression of mouse oral papillomavirus infections', Chemico-Biological Interactions, vol. 333, 109321.