The National Institutes of Health (NIH) is offering a funding opportunity aimed at developing novel theories and methods for understanding the genetic architecture of complex human traits through the R21 Exploratory/Developmental Research Grant mechanism. This initiative seeks interdisciplinary applications that address the interplay of genetic and non-genetic factors influencing trait variation, emphasizing the use of large-scale datasets and innovative approaches from various scientific fields. The grant allows for a maximum budget of $275,000 over two years, with a prohibition on clinical trials and a limit on new data generation to 20% of project costs. Interested applicants should note that proposals are due by January 7, 2027, and can direct inquiries to grantsinfo@nih.gov for further information.