ORIC-944 is a second-generation, orally bioavailable PRC2 inhibitor, targeting the allosteric EED subunit. EZH2 inhibitors typically require frequent dosing due to poor drug-like properties. This article describes the previously undisclosed structure-based design of ORIC-944 into a potential best-in-class PRC2 inhibitor with enhanced solubility, metabolic stability, and prolonged clinical half-life compared to EZH2 inhibitors. It also highlights ORIC-944's capability to reprogram refractory, AR-independent prostate tumors to an AR-dependent state, the synthesis, clinical data, and more!

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.

STX-478 is a wild-type-sparing, oral, CNS-penetrant, novel allosteric inhibitor of mutant phosphatidylinositol-3 kinase α (PI3Kα), targeting a cryptic pocket near the ATP-binding site. PI3Kα plays a central role in many cancers, and has been recently highlighted in coverage of 2021 Molecule of the Year nominee and PI3Kα degrader inavolisib. Currently approved PI3Kα modulators are limited by their off-target activities on WT PI3Kα and other kinases, leading to significant side effects including hyperglycemia and rash.

GDC-1971 is an orally bioavailable allosteric inhibitor of the SHP2 phosphatase discovered by Relay Therapeutics, and in clinical development by Genentech both as a monotherapy and in combination with several anticancer therapies. SHP2 inhibitors are being hotly pursued since they may combine with numerous classes of clinically important agents. This article provides a primer on SHP2 as an oncology target, the disclosed molecules in the space, how RLY-1971 was identified, and what the industry is watching for.

TNG348 is a synthetic lethal inhibitor of USP1 by Tango Therapeutics. Inhibiting USP1 disrupts DNA repair and replication mechanisms leading to the selective death of BRCA1/2-mutant cancer cells. Despite the clinical benefit of PARPi in treating BRCA-mutated or HRD+ tumors, some patients exhibit an inadequate response or develop resistance. USP1 inhibitors may hold promise in meeting this unmet clinical demand. This case study highlights USP1 as a synthetic lethal target, the current competitive landscape, how the Tango team overcame high microsomal clearance and hERG liabilities, and more.