Postdoctoral Fellowships are designed to support individuals in programs of research training and study to enable new investigators to competitively qualify for independent careers in cancer research. An application for a Postdoctoral Fellowship must be endorsed by the applicant's proposed mentor and the head of the department in which the training will be conducted. A plan of training must be formulated and agreed on by the mentor and the applicant and described in detail in the application. Applicants are eligible to submit a proposal if they work at a US academic institution or eligible non-profit; are a US citizen or a non-citizen holding an appropriate visa; have had their doctoral degree for less than 4 years, time spent in clinical-only training is not counted; and do not have a faculty appointment. Applicants may apply for two- or three-year fellowships, depending on how long they have held their doctoral degree. The candidate is required to identify a mentor before submitting an application, who is actively engaged in research in the proposed area and has a track record of mentoring individuals at a similar career stage to the applicant. The mentor is expected to be committed to the proposed research project, supervising the applicant's research, and the career development of the candidate. Applicants must submit letters of recommendation that are ideally provided by a graduate mentor, a member of a former dissertation committee, and a former research mentor. The deadlines are April 1 and October 15. Please visit the award's website for more information and the complete application process.