The National Institutes of Health (NIH) has announced a funding opportunity for the "Co-infection and Cancer (R21 Clinical Trial Not Allowed)" grant, aimed at enhancing research into the relationship between co-infections and cancer. This initiative encourages exploratory studies that investigate how concurrent or sequential infections by multiple pathogens influence carcinogenesis, with a focus on mechanistic and epidemiological insights rather than clinical trials. The grant supports research that may inform cancer prevention and treatment strategies, particularly concerning infection-related cancers, with a maximum award of $275,000 for a two-year project period. Applications are due starting January 16, 2025, and interested applicants can find more information by contacting NIH Grants Information at grantsinfo@nih.gov or visiting the official announcement at https://grants.nih.gov/grants/guide/pa-files/PAR-25-083.html.