Crystal Structure of EGFR(L858R/T790M/C797S) in complex with CH7233163

Experimental Data Snapshot

  • Resolution: 2.31 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 

Starting Model: experimental
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CH7233163 Overcomes Osimertinib-Resistant EGFR-Del19/T790M/C797S Mutation.

Kashima, K.Kawauchi, H.Tanimura, H.Tachibana, Y.Chiba, T.Torizawa, T.Sakamoto, H.

(2020) Mol Cancer Ther 19: 2288-2297

  • DOI: https://doi.org/10.1158/1535-7163.MCT-20-0229
  • Primary Citation of Related Structures:  
    6LUB, 6LUD

  • PubMed Abstract: 

    Osimertinib is the only EGFR-tyrosine kinase inhibitor (TKI) capable of overcoming EGFR-T790M-mutated NSCLC, but osimertinib-resistant EGFR triple mutations (Del19/T790M/C797S or L858R/T790M/C797S) have been reported. Although allosteric EGFR TKIs (e.g., EAI-045) that potentially overcome L858R/T790M/C797S have been identified, there are no effective inhibitors against Del19/T790M/C797S. In this study, we identified CH7233163 as having the potential to overcome EGFR-Del19/T790M/C797S. CH7233163 showed potent antitumor activities against tumor with EGFR-Del19/T790M/C797S in vitro and in vivo In addition to EGFR-Del19/T790M/C797S, the characterization assays showed that CH7233163 more selectively inhibits various types of EGFR mutants (e.g., L858R/T790M/C797S, L858R/T790M, Del19/T790M, Del19, and L858R) over wild type. Furthermore, crystal structure analysis suggested that CH7233163 is a noncovalent ATP-competitive inhibitor for EGFR-Del19/T790M/C797S that utilizes multiple interactions with the EGFR's αC-helix-in conformation to achieve potent inhibitory activity and mutant selectivity. Therefore, we conclude that CH7233163 is a potentially effective therapy for osimertinib-resistant patients, especially in cases of EGFR-Del19/T790M/C797S.

  • Organizational Affiliation

    Research Division, Chugai Pharmaceutical Co. Ltd., Kanagawa, Japan. kashimaknj@chugai-pharm.co.jp.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Epidermal growth factor receptor329Homo sapiensMutation(s): 6 
UniProt & NIH Common Fund Data Resources
Find proteins for P00533 (Homo sapiens)
Explore P00533 
Go to UniProtKB:  P00533
GTEx:  ENSG00000146648 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00533
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
EUX (Subject of Investigation/LOI)
Query on EUX

Download Ideal Coordinates CCD File 
B [auth A]N-[2-(1-cyclopropylsulfonylpyrazol-4-yl)pyrimidin-4-yl]-7-(4-methylpiperazin-1-yl)-5-propan-2-yl-9-[2,2,2-tris(fluoranyl)ethoxy]pyrido[4,3-b]indol-3-amine
C31 H34 F3 N9 O3 S
Experimental Data & Validation

Experimental Data

  • Resolution: 2.31 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.187 
  • Space Group: I 2 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 144.299α = 90
b = 144.299β = 90
c = 144.299γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-10-07
    Type: Initial release
  • Version 1.1: 2021-08-25
    Changes: Database references
  • Version 1.2: 2023-11-29
    Changes: Data collection, Refinement description