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Experts from across the University of Cincinnati, UC Health, and Cincinnati Children's form our core scientific leadership team.
David Gius, MD, PhD
Director, University of Cincinnati Cancer Center
David Gius, MD, PhD, serves as director of the University of Cincinnati Cancer Center and is responsible for leading the Cancer Center's research, clinical and academic mission. An internationally recognized physician-scientist, Dr. Gius is a leader in cancer biology and radiation oncology whose research has advanced the understanding of the relationship between aging and cancer through the discovery of the sirtuin tumor suppression gene family. He brings his lab, two National Institutes of Health (NIH) R01 grants and two active clinical trials for women with high-risk breast cancer, adding significant research momentum to a Cancer Center already accelerating toward National Cancer Institute (NCI) designation. Dr. Gius is a recipient of the 2024 American Society for Radiation Oncology (ASTRO) Mentorship Award and has mentored more than 70 trainees, many of whom now hold prominent faculty positions nationwide.
In addition to serving as Cancer Center director, Dr. Gius holds an academic appointment in the Department of Radiation Oncology at the UC College of Medicine, where he is a professor.
Daniel Starczynowski, PhD
Deputy Director for Research
Davendra Sohal, MD, MPH
Associate Director for Clinical Research
Davendra Sohal, MD, MPH, is the associate director for clinical research at the University of Cincinnati Cancer Center. Dr. Sohal joined the University of Cincinnati Cancer Center in 2019 with a focus on gastrointestinal cancer research and experimental therapeutics. He is currently leading several national clinical trials as well as trials developed right here in Cincinnati to investigate new cancer drugs, including immunotherapy, targeted therapy, and cellular therapies.
Pier Paolo Scaglioni, MD
Associate Director for Translational Research
Pier Paolo Scaglioni, MD, is the associate director for translational research at the University of Cincinnati Cancer Center. He is a physician-scientist focusing his clinical practice on acute leukemia and stem cell transplant and acute leukemia. regulate the metabolism of cancer cells with an emphasis on lipid metabolism and ferroptosis. His lab has identified several therapeutic targets and provided the rationale for clinical trials testing new cancer drugs. Dr. Scaglioni is also currently working to build integrated scientific programs between the University of Cincinnati’s College of Medicine and Cincinnati Children’s to create a pipeline from basic science discoveries to patients.
Leeya Pinder, MD, MPH
Interim Associate Director for Population Science Research
Leeya Pinder, MD, MPH is the interim associate director for population science research at the University of Cincinnati Cancer Center. In addition to her Cancer Center role, Dr. Pinder is a gynecologic oncologist, global health clinician, and international researcher who is dedicated to improving the health of women worldwide.
Melinda Butsch Kovacic, MPH, PhD
Associate Director for Community Outreach & Engagement (COE)
Melinda Butsch Kovacic, MPH, PhD, is the associate director for community outreach & engagement at the University of Cincinnati Cancer Center. Her research has primarily focused on epidemiologic approaches to identify genetic, infectious, environmental, and molecular biomarkers of childhood asthma and cancer using human biospecimens and clinical data. Dr. Butsch Kovacic also focuses on expanding community partnerships using community-based participatory research (CBPR) to co-create materials that improve community members’ health literacy and engage them in citizen science.
Susan Waltz, PhD
Associate Director for Cancer Research Training and Education Coordination (CRTEC)
Susan Waltz, PhD, is the associate director for Cancer Research Training and Education Coordination (CRTEC) at the University of Cincinnati Cancer Center. Dr. Waltz focuses on identifying education and professional development opportunities for aspiring young scientists, cancer researchers, and clinical care specialists. Her research has primarily focused on RON Receptor Tyrosine Kinase Signaling and breast and prostate cancers.
Steven D. Kniffley, PsyD, MPA, MBA
Associate Director for Cancer Research Development & Faculty Affairs
Steven D. Kniffley Jr., PsyD, MPA, MBA, is a nationally renowned racial trauma scholar and clinician. Dr. Kniffley is an associate professor in the Department of Psychiatry and Behavioral Neuroscience and serves as the Director for Faculty Development and Special Initiatives for the University of Cincinnati Faculty Enrichment Center. Throughout his career, Dr. Kniffley has secured over $1.5 million in funding for the development and implementation of innovative, evidence-based treatments for trauma in underserved populations, graduate student research and increased access to clinical care. Dr. Kniffley also serves as an organizational consultant, has written numerous books, book chapters and articles on Black male mental health, Black males and the criminal justice system, racial trauma treatment and training, program evaluation, organizational development and academic achievement.
Ken Greis, PhD
Associate Director for Shared Resources
Ken Greis, PhD, is the associate director for shared resources at the University of Cincinnati Cancer Center. His research focuses on technology development and the application of mass spectrometry to understand biochemical and biomedical systems where he has also developed significant expertise in project management. He has a passion for developing and managing technology to help researchers solve challenging questions and thus collaborates in various research areas including cancer.
Tammy Mentzel, MPH
Associate Director for Administration, Executive Director of Business Administration
mentzetk@ucmail.uc.edu
Tammy Mentzel, MPH, has been selected to lead the University of Cincinnati Cancer Center's administrative core as Executive Director of Business Administration. She will also serve as Associate Director for Administration within the Cancer Center's research structure, reporting directly to David Gius, MD, PhD, director of the University of Cincinnati Cancer Center. Tammy’s focus is to build an effective, NCI-compliant cancer center administrative team to enhance cancer research, eliminate health disparities, and achieve future NCI designation for the benefit of the community and patients served in the tristate region and beyond.
Maria Czyzyk-Krzeska, MD, PhD
Program Lead, Signaling Networks & Metabolic Pathways
czyzykm@ucmail.cu.edu
Andrew Waters, PhD
Program Lead, Experimental Therapeutics
watersa3@ucmail.uc.edu
Senu Apewokin, MD
Program Lead, Population Science & Cancer Control
apewoksu@ucmail.uc.edu
Senu Apewokin, MD, is program lead for population science research at the University of Cincinnati Cancer Center and serves as Assistant Professor of Medicine and Director of Transplant Infectious Diseases at the University of Cincinnati. His work focuses on infectious diseases affecting immunocompromised populations, including individuals with HIV/AIDS and patients undergoing blood and marrow or solid organ transplantation. Dr. Apewokin’s research integrates clinical and population-based approaches to study infection risk, immune response, and microbiome–host interactions in cancer and transplant settings, with the goal of informing strategies to improve supportive care and clinical outcomes.
Courtney Jones, PhD
Program Lead, Pediatric Oncology
courtney.jones@cchmc.org
Amar Natarajan, PhD, joined the University of Cincinnati Cancer Center in 2025 and brings more than 20 years of experience in cancer drug discovery and development. His lab is focused on developing reversible inhibitors, covalent binders, and heterobifunctional compounds (aka PROTACs and RIPTACs) against therapeutic targets implicated in cancer and other proliferative disorders.
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