The discovery that individuals with null mutations in the NaV1.7 exhibited pain insensitivity sparked interest in targeting NaV1.7 to potentially treat pain. Despite the potential of selectively inhibiting sodium channels like NaV1.7, NaV1.8, and NaV1.9 for pain management, developing selective inhibitors suitable for clinical use has proven challenging. This article complements our coverage of VX-548, NaV1.8 as a critical target in pain management, and our NaV1.8 compound roundup and provides a reminder of noteworthy preclinical and clinical NaV1.7 small molecule inhibitors as of April 2024.

ORIC-533, a potential best-in-class oral inhibitor of CD73 from ORIC Pharmaceuticals, is currently in a Ph. Ib trial for relapsed/refractory multiple myeloma (MM). It inhibits the CD73-mediated conversion of AMP to adenosine which generates an immunosuppressive tumor microenvironment and has the potential to be a next-generation immunotherapy. The in-depth use of X-ray structures led the team to discover a novel set of phosphonate bioisosteres which acheived bioavailability in a polar scaffold. The structure and discovery of ORIC-533 were recently disclosed at the ACS Spring 2024 Meeting.

In March, Crinetics Pharmaceuticals revealed their discovery of CRN04894, a first-in-class nonpeptide melanocortin type 2 receptor (MC2R) antagonist which is currently being evaluated in several Ph. II trials. Additional molecules to make the top ten include a preclinical, brain-penetrant casein kinase 1 delta (CK1δ) inhibitor and a WT-sparing phosphatidylinositol-4,5-bisphosphate 3-kinase catalyt [...]

Minipigs have recently gained prominence as an alternative non-rodent in vivo model for pharmacokinetic (PK), efficacy, and toxicology studies supporting human dose predictions. This article provides an overview of the use of minipigs in small molecule preclinical drug discovery research, tracing their historical background and outlining practical considerations for selecting them in studies focusing on hepatic metabolism, oral bioavailability, CNS penetration, and toxicology. It highlights minipigs' unique advantages and makes a compelling case for their continued use in preclinical research.

The "New Drugs on the Horizon" sessions at the AACR Annual Meeting 2024 in San Diego revealed twelve innovative oncology agents and offered attendees a first look at their structures and preliminary data as they enter/progress in the clinic. In case you missed any of these exciting compounds – including selective CDK inhibitors, molecular glues, bifunctional degraders, a radiopharmaceutical, a bifunctional antibody, and an ADC – this article covers the structures and targets disclosed. A separate session disclosed the structure of a pan-RAS isoform inhibitor with remarkable clinical results.