PMID- 37165101 OWN - NLM STAT- MEDLINE DCOM- 20230831 LR - 20230901 IS - 1433-8491 (Electronic) IS - 0940-1334 (Print) IS - 0940-1334 (Linking) VI - 273 IP - 7 DP - 2023 Oct TI - Ulotaront: review of preliminary evidence for the efficacy and safety of a TAAR1 agonist in schizophrenia. PG - 1543-1556 LID - 10.1007/s00406-023-01580-3 [doi] AB - Ulotaront is a trace amine-associated receptor 1 (TAAR1) agonist in Phase 3 clinical development for the treatment of schizophrenia. Ulotaront was discovered through a unique, target-agnostic approach optimized to identify drug candidates lacking D2 and 5-HT2A receptor antagonism, while demonstrating an antipsychotic-like phenotypic profile in vivo. The mechanism of action (MOA) of ulotaront is thought to be mediated by agonism at TAAR1 and serotonin 5-HT1A receptors. Ulotaront has completed two Phase 2 trials (4-week acute study and 26-week open-label extension) which led to Breakthrough Therapy Designation from the US Food and Drug Administration for the treatment of schizophrenia. In the double-blind, placebo-controlled, acute study, ulotaront was associated with significant (p < 0.001) improvement in Positive and Negative Syndrome Scale (PANSS) total score (effect size [ES]: 0.45), with improvements vs. placebo also observed across secondary endpoints. Post-hoc analyses of the acute trial revealed additional evidence to support the effect of ulotaront on negative symptoms. In the 4-week study, ulotaront was well-tolerated, with an incidence of adverse events (AEs) numerically lower compared to placebo (45.8% vs. 50.4%; with a number needed to harm [NNH] for individual ulotaront AEs all > 40). The open-label extension demonstrated further improvement across schizophrenia symptoms and confirmed the tolerability of ulotaront, with a 6-month completion rate of 67%. Based on current data, ulotaront shows potential to be a first-in-class TAAR1 agonist for the treatment of schizophrenia with a safety and efficacy profile distinct from current antipsychotics. CI - (c) 2023. The Author(s). FAU - Achtyes, Eric D AU - Achtyes ED AD - WMU Homer Stryker M.D. School of Medicine, Kalamazoo, MI, USA. FAU - Hopkins, Seth C AU - Hopkins SC AD - Sunovion Pharmaceuticals Inc., Marlborough, MA, USA. FAU - Dedic, Nina AU - Dedic N AD - Sunovion Pharmaceuticals Inc., Marlborough, MA, USA. FAU - Dworak, Heather AU - Dworak H AD - Sunovion Pharmaceuticals Inc., Marlborough, MA, USA. FAU - Zeni, Courtney AU - Zeni C AD - Sunovion Pharmaceuticals Inc., Marlborough, MA, USA. Courtney.Zeni@Sunovion.com. FAU - Koblan, Kenneth AU - Koblan K AD - Sunovion Pharmaceuticals Inc., Marlborough, MA, USA. LA - eng PT - Journal Article PT - Review DEP - 20230510 PL - Germany TA - Eur Arch Psychiatry Clin Neurosci JT - European archives of psychiatry and clinical neuroscience JID - 9103030 RN - XMC8VP6RI2 (Trace amine-associated receptor 1) RN - 0 (SEP-363856) RN - 0 (Antipsychotic Agents) SB - IM MH - United States MH - Humans MH - *Schizophrenia/diagnosis MH - Treatment Outcome MH - *Antipsychotic Agents/adverse effects MH - Randomized Controlled Trials as Topic PMC - PMC10465394 OTO - NOTNLM OT - Schizophrenia OT - Serotonin 5-HT1A OT - Trace amine-associated receptor 1 COIS- Dr. Achtyes has served on advisory boards or consulted for Alkermes, Atheneum, Janssen, Karuna, Lundbeck/Otsuka, Roche, Sunovion and Teva. He has received research support from Alkermes, Astellas, Biogen, Boehringer-Ingelheim, InnateVR, Janssen, National Network of Depression Centers, Neurocrine Biosciences, Novartis, Otsuka, Pear Therapeutics, and Takeda. He serves as an advisor to CAPNOS Zero, the World Psychiatric Association and Clubhouse International, and the SMI Adviser LAI Center of Excellence (all unpaid). Drs. Hopkins, Dedic, Dworak, Zeni, and Koblan are employees of Sunovion Pharmaceuticals Inc. EDAT- 2023/05/11 00:42 MHDA- 2023/08/31 06:42 PMCR- 2023/05/10 CRDT- 2023/05/10 23:23 PHST- 2023/01/18 00:00 [received] PHST- 2023/02/26 00:00 [accepted] PHST- 2023/08/31 06:42 [medline] PHST- 2023/05/11 00:42 [pubmed] PHST- 2023/05/10 23:23 [entrez] PHST- 2023/05/10 00:00 [pmc-release] AID - 10.1007/s00406-023-01580-3 [pii] AID - 1580 [pii] AID - 10.1007/s00406-023-01580-3 [doi] PST - ppublish SO - Eur Arch Psychiatry Clin Neurosci. 2023 Oct;273(7):1543-1556. doi: 10.1007/s00406-023-01580-3. Epub 2023 May 10.