Research Interests:
The focus of Dr. Sutphen's research is clinical cancer genetic epidemiology, specifically, heritable cancer risk, factors that modify heritable risk, and development of strategies to reduce risk and improve early cancer detection.
Dr. Sutphen's research focuses heavily on population-based ovarian cancer studies. Through a community-based regional rapid ascertainment network she established, Dr. Sutphen and her clinical colleagues identify and confirm all incident epithelial ovarian cancer cases in the Tampa-St. Petersburg-Clearwater region, with a population in excess of 2 million. Data from these ongoing efforts included the finding of a higher frequency of BRCA1 and BRCA2 mutations among women with invasive ovarian cancer than previously reported, and a higher contribution of BRCA2 to ovarian cancer than previously known. Dr. Sutphen is currently co-Investigator in a followup study to examine the contribution of mismatch repair deficiency genes to ovarian cancer.
Dr. Sutphen is also Co-PI of a unique new NCI-funded initiative to accomplish a genome-wide analysis to identify other genetic loci underlying ovarian cancer. This massive and unique effort led by Moffitt is being performed in collaboration with 4 other large, population-based studies of ovarian cancer in North America, encompassing 4000 ovarian cancer patients and 4000 healthy matched controls.
Dr. Sutphen's translational research also focuses on development of ovarian cancer biomarkers for early detection, accurate diagnosis and effective treatment. Current screening modalities available for ovarian cancer detection, including transvaginal ultrasounds and circulating levels of CA125, have not been shown to be effective in early detection of this disease. Other circulating biomarkers may have potential as a 'blood test' for early detection. A study conducted by Dr. Sutphen and her associates, 'Investigation of Lysophosphatidic Acid as a Biomarker in Ovarian Cancer,' provided promising preliminary results showing statistically significant differences in levels of several lysophospholipids between ovarian cancer patients and healthy controls. Current efforts are directed at validation of these findings in a larger study.
Dr. Sutphen is also currently leading a large NIH-funded study using state-of-the-art proteomics technology. The study is enrolling 1000 women undergoing surgery for suspected ovarian cancer, and analyzing their blood samples for proteomic markers which differ from proteins found in healthy women.