Through this Notice of Funding Opportunity (NOFO), the National Cancer Institute (NCI) invites applications to support the validation of molecular/cellular/imaging markers (referred to as "markers" or "biomarkers") and assays for cancer detection, diagnosis, prognosis, monitoring, and prediction of response or resistance to treatment, as well as markers for cancer prevention and control. This FOA will support investigator-initiated research for both analytical, and clinical validation of assays...