The heterotrimeric Gq protein family plays an important role in regulating signaling through a number of effectors. Gq signaling has been implicated in a number of diseases including asthma and uveal melanoma. Several inhibitors have been identified that can effectively and specifically inhibit Gq including constitutively active Gq mutants found in some cancers. The goal of this symposium is to provide: 1) insight into the development of Gq inhibitors that might be used to treat various diseases; 2) insight into the use of Gq inhibitors to treat disease; and 3) mechanistic insight into Gq inhibitor function.