GH Research PLC, a clinical-stage biopharmaceutical company, engages in developing various therapies to treat psychiatric and neurological disorders. The company develops 5-Methoxy-N,N-Dimethyltryptamine (5-MeO-DMT) therapies for the treatment of patients with treatment-resistant depression (TRD). Its lead program is GH001, an inhalable mebufotenin product candidate that has completed two Phase 1 clinical trials and Phase 1/2 clinical trial in patients with TRD. The company also develops GH002, an intravenous mebufotenin product candidate; and GH003, an intranasal mebufotenin product candidate, which are in preclinical development trials with a focus on psychiatric and neurological disorders. GH Research PLC was incorporated in 2018 and is based in Dublin, Ireland.