Shelley Tworoger, PhD

I am the Associate Center Director of Population Science and a Senior Faculty Member in the Cancer Epidemiology department at Moffitt Cancer Center.  I also maintain an Adjunct Associate Professor appointment at the Harvard T.H. Chan School of Public Health.  My research focuses on enhancing ovarian cancer prevention and improving understanding of breast and ovarian carcinogenesis through collaborations with biostatisticians, pathologists and oncologists. The goal of my research is to improve prevention and better identify women at high risk of breast and ovarian cancer. My integrative approach uses epidemiologic studies - leveraging questionnaires, medical records, biomarkers, and tumor tissue - in collaboration with a multidisciplinary team of researchers, including biostatisticians, pathologists, basic scientists, psychologists and oncologists. I am the PI of an international, NCI-sponsored research effort, the Ovarian Cancer Cohort Consortium (OC3), that pools data from 27 prospective cohort studies from around the world to study ovarian cancer risk and survival. My research spans a wide variety of exposures, including psychosocial stress, metabolomics, and inflammation/immunity, among others. I am excited to expand my research leveraging the unique resources at the Moffitt.


Mary Townsend, ScD

I joined the Tworoger lab as an Applied Research Scientist in July 2017. Previously, I was an Instructor in Medicine at Brigham and Women's Hospital and Harvard Medical School where my research focused on the epidemiology of urinary incontinence in women as well as evaluation of biological markers for use in epidemiologic studies. My current research projects include investigating the role of inflammation (e.g., pre-diagnostic c-reactive protein levels and inflammation-related exposures, such as pro-inflammatory diet and sedentary behavior) in ovarian cancer risk, and overseeing pilot studies to measure immune markers in ovarian tumor tissue samples; this work will enable future studies examining potential heterogeneity in ovarian cancer risk factor profiles by immune features of the tumor.


Tianyi Wang, PhD

I received Ph.D. in Epidemiology and Biostatistics from Peking University in China. I am interested in exploring modifiable risk factors and genetic variants which could influence risk and survival of cancers, as well as the screening and early detection of cancers.


Yessica C. Martinez, MPH CPH

I am currently working as a Research Project Specialist with Dr. Shelley Tworoger in the division of Cancer Epidemiology.  I’m originally from Caracas, Venezuela but grew up in Ft. Lauderdale, Florida.  I served eight years in the US Army as a Combat Medic and an HR Sergeant.  I received a BA in Psychology from American Military University and an MPH with a concentration in Epidemiology from the University of South Florida. My interests include cancer epidemiology and prevention, genetic epidemiology, health disparities among minority populations, as well as how geography and spatial location may contribute to social determinants of health. 


Cassandra Hathaway, MPH CPH

I am a Research Project Specialist for Dr. Tworoger.  Originally from Oregon, I moved to Tampa to study Public Health at the University of South Florida.  I subsequently received my bachelors of science in Public Health with a minor in Infection Control, my masters of public health with a concentration Infection Control and a graduate certificate in Epidemiology of Infectious Diseases.  I am currently a student at Nova Southeastern University, studying for a PhD in Health Science.  My research interests include infections and their relation to cancer risk and survival.