The Takeda GPR139 agonist, TAK-041 , is a CNS-penetrant GPCR agonist being explored for schizophrenia symptoms and is an interesting example of a triazinone-containing clinical candidate. GPR139 is an orphan GPCR that’s highly expressed in the human habenula, which plays a major role in avoidance behavior. Lesions in the habenula cause [...]

Ulotaront (SEP-363856) is a Phase III candidate with FDA Breakthrough Therapy Designation for the treatment of schizophrenia with demonstrated efficacy based on a physician-rated scale (PANSS) in a 4-week placebo-controlled trial and continued improvement in an open-label extension study. Reviewer Jake Schwarz says, “ulotaront was developed [...]

Context. HR1405-01 (Nanjing Heron Pharmaceutical) is an intravenous NSAID with inflammatory and analgesic activities. Oral NSAIDs (ibuprofen, naproxen..) are widely used, and it is interesting to see justification for a new intravenous NSAID. Intravenous ibuprofen was the first intravenous NSAID to be approved, following which a couple of [...]

Zuranolone (ZURZUVAE™) is an oral positive allosteric modulator of CNS GABA signaling developed by Sage Therapeutics, in collaboration with Biogen, which was approved in August 2023 by the FDA for the treatment of postpartum depression (PPD). In 2019 Sage had received approval for brexanolone (ZULRESSO™), an IV formulation of the endogenous GABA PAM neurosteroid hormone for PPD, but an oral drug is expected to greatly increase access to treatment. Zuranolone was also investigated for major depressive disorder, although the FDA declined to extend approval for this indication.

Drug Hunter Reviewer Commentary. With over two decades of experience in neuroscience drug discovery, Drug Hunter reviewer Jake Schwarz says "mGluR2/3 agonists have been explored for schizophrenia, and agonists/PAMS could be tuned to give antagonist/NAM activity, but depression is a new indication. One of the more interesting depression [...]