Related Experiment Video
Updated: Mar 26, 2026

Profiling Sensitivity to Targeted Therapies in EGFR-Mutant NSCLC Patient-Derived Organoids
Published on: November 22, 2021
SAR Exploration Guided by LE and Fsp(3): Discovery of a Selective and Orally Efficacious RORγ Inhibitor
Kazuyuki Hirata1, Masayuki Kotoku1, Noriyoshi Seki1
1Chemical Research Laboratories, Biological Pharmacological Research Laboratories, Drug Metabolism & Pharmacokinetics Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc. , 1-1, Murasaki-cho, Takatsuki, Osaka 569-1125, Japan.
Abstract:
A novel series of RORγ inhibitors was identified starting with the HTS hit 1. After SAR investigation based on a prospective consideration of two drug-likeness metrics, ligand efficiency (LE) and fraction of sp(3) carbon atoms (Fsp(3)), significant improvement of metabolic stability as well as reduction of CYP inhibition was observed, which finally led to discovery of a selective and orally efficacious RORγ inhibitor 3z.
Related Concept Videos
Drug Discovery: Overview
Pharmacogenomics: Identification of New Drug Targets
Targets for Drug Action: Overview
Receptors are either membrane-spanning or intracellular proteins, which upon binding a ligand, get activated and transmit the signal downstream to elicit a response. Drugs bind receptors, either mimicking the action of endogenous ligands or blocking the receptor activity to bring about a modified response. Nearly 35% of approved drugs target the G...

