The National Institutes of Health (NIH), through the National Institute of Mental Health (NIMH), is inviting applications for the R33 Exploratory/Developmental Grants Phase II funding opportunity, aimed at early-stage testing of pharmacologic and device-based interventions for mental disorders. This initiative seeks to support studies that validate molecular or circuit-based targets and assess their impact on clinical outcomes for conditions such as schizophrenia, depression, and anxiety, with a focus on innovative interventions that have not yet received FDA approval. The total funding commitment for this opportunity is $27 million, with a proposal deadline of February 15, 2024. Interested applicants can find additional information and application guidelines at the NIH website or contact the NIH OER Webmaster at FBOWebmaster@OD.NIH.GOV for assistance.