Daprodustat is the first HIF-prolyl hydroxylase domain (PHD) inhibitor that has been approved for the treatment of anemia in chronic kidney disease (CKD) and marks the first novel anemia treatment approved in the US in >30 years. PHDs have been attractive targets for treating anemia, especially in CKD patients, because the enzymes regulate levels of hypoxia-inducible factors (HIFs) including HIF-2, which induces the production of erythropoietin that in turn stimulates red blood cell production. The small molecule drug has similar safety and activity as epoetin alfa, an injected biologic.

The Altos Therapeutics /Takeda D2/D3 receptor antagonist, TAK-906 , is a peripherally-restricted, non-BBB penetrant molecule, targeting the stomach and vomiting center in the area postrema to treat gastroparesis. Gastroparesis is a chronic condition characterized by delayed gastric emptying, resulting in nausea, vomiting, pain, and anorexia [...]

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.

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 [...]

LTGO-33 is a state-independent NaV1.8 inhibitor with over 600-fold selectivity for the NaV1.8 channel over other sodium channels. Chronic pain affects millions, and existing treatments offer limited efficacy, risk of abuse, and low tolerability. There is an urgent need for new drugs that target validated pain mechanisms such as NaV1.8, which has recently gained increased attention. This article explores the unique pharmacological properties of LTGO-33, setting it apart from earlier NaV1.8 inhibitors.