The National Cancer Institute (NCI) is inviting applications for the NCI Worta McCaskill-Stevens Career Development Award for Community Oncology and Prevention Research (K12 Clinical Trial Optional). This award is designed to support institutional career development awards that prepare newly trained clinicians for independent research careers in community oncology or cancer prevention. The program aims to facilitate the transition of these clinicians to more advanced support mechanisms or independent research funding. Key aspects of the program include: * Supporting the training of clinical scientists in community cancer prevention, intervention, and treatment research * Allowing the appointment of scholars proposing to serve as the lead investigator of an independent community-based clinical trial or proposing a separate ancillary study to an existing prevention, screening, or control clinical trial * Providing research experience in a community-based clinical trial led by another investigator * Supporting innovative clinical trial approaches that expand engagement of underserved or underrepresented communities in cancer clinical research * Special emphasis on training clinical scientists whose career goal is to meet the needs of underserved or underrepresented communities for access to clinical care and participation in clinical research.