The Department of Health and Human Services (HHS), through the National Institutes of Health (NIH) and the National Institute of Mental Health (NIMH), announces a funding opportunity entitled "Clinical Studies of Mental Illness (Collaborative R01)." This initiative supports collaborative clinical studies focusing on mental health genetics, biomarker research, and various mental illness pathways, necessitating multiple sites to enhance research capabilities and participant diversity. Applications are solicited for studies that involve shared protocols to improve recruitment and address health disparity populations. The funding aims to facilitate collaborative projects that allow rigorous data management and analysis over a maximum period of 5 years. Eligible applicants include various educational and research institutions, nonprofits, and government entities. Significant emphasis is placed on adherence to specific guidelines concerning human subjects, data management, and sharing plans. The application deadline is structured around NIH review cycles, with encouragement for early submissions to allow for possible corrections. Overall, this funding opportunity seeks to advance mental health research and improve understanding of mental illnesses through collaborative, well-coordinated efforts across diverse sites.