The NIH SBIR and STTR programs commonly use parent funding opportunity announcements (PAs), also known as Omnibus grant solicitations. The SBIR and STTR Omnibus solicitations are intended to support small business innovation research across a broad spectrum of topic areas. Omnibus solicitations are designed to encourage investigator-initiated SBIR and STTR grant applications in response to identified topics.
Note that NIAID does not support clinical trials through the SBIR or STTR programs, with the exception of our NIAID SBIR Phase II Clinical Trial Implementation Cooperative Agreement (U44). For details, read "Can my small business obtain funding for a clinical trial?"