Project Summary/Abstract The Reproductive Scientist Development Program (RSDP) is a multi-disciplinary, multi-institutional research career development program for obstetrician-gynecologists in cell and molecular biology and related fundamental sciences. The objective of this program is to educate obstetrician-gynecologists in contemporary basic science research related to reproductive medicine and biology in order to prepare them for research careers in academic medicine. The overall goal is to help ensure that academic obstetrics and gynecology fulfills its mission to increase research and discovery in the reproductive sciences. Outstanding MD/PhD, PhD, and MD scientists with broad research experience serve as faculty mentors. A unique feature of this program is that outstanding individuals, upon completing a residency in obstetrics and gynecology, and in most cases two or three years of clinical subspecialty fellowship, spend two years (Phase I) in fundamental science research laboratories under the supervision and mentorship of experienced, highly regarded accomplished scientists. During Phase I, Scholars are dedicated to extensive, immersive training in research methods and research-related career development. Following this experience, Scholars spend an additional two-year period establishing their research program in a Department of Obstetrics and Gynecology (Phase II). Here, the Scholar serves as a junior faculty member with at least 75% time devoted to developing an independent research career. For the past five (5) years, salary support for scholars has been provided mainly by NICHD, while support for research-related expenses has been provided from the various non-federal agencies who contribute to the RSDP program. The RSDP has a rich history of educating young physician scientists in Obstetrics and Gynecology and replenishing the pipeline of reproductive scientists and is committed to continuing its objective of producing the next leaders of our academic obstetrics and gynecology departments. With funding thru this supplement, the program can address the relative dearth of applicants and scholars in the subspecialty of gynecologic oncology and help to fill an urgent need for well-trained physician scientists in this subspecialty.