Cited by 185Protein Kinase Regulation and GTPase SignalingLung Cancer Treatments and MutationsMelanoma and MAPK Pathways

KRAS G12C Game of Thrones, which direct KRAS inhibitor will claim the iron throne?

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Nagasaka, Misako, Li, Yiwei, Sukari, Ammar, Ou, Sai-Hong Ignatius, Al-Hallak, Mohammed Najeeb, Azmi, Asfar S.·2020·Cancer Treatment Reviews

Abstract

Mutations in Kirsten rat sarcoma viral oncogene homolog (KRAS) are among the most common aberrations in cancer, including non-small cell lung cancer (NSCLC). The lack of an ideal small molecule binding pocket in the KRAS protein and its high affinity towards the abundance of cellular guanosine triphosphate (GTP) renders the design of specific small molecule drugs challenging. Despite efforts, KRAS remains a challenging therapeutic target. Among the different known mutations; the KRAS G12C (glycine 12 to cysteine) mutation has been considered potentially druggable. Several novel covalent direct inhibitors targeting KRAS G12C with similar covalent binding mechanisms are now in clinical trials. Both AMG 510 from Amgen and MRTX849 from Mirati Therapeutics covalently binds to KRAS G12C at the cysteine at residue 12, keeping KRAS G12C in its inactive GDP-bound state and inhibiting KRAS-dependent signaling. Both inhibitors are being studied as a single agent or as combination with other targets. In addition, two novel KRAS G12C inhibitors JNJ-74699157 and LY3499446 will have entered phase 1 studies by the end of 2019. Given the rapid clinical development of 4 direct covalent KRAS G12C inhibitors within a short period of time, understanding the similarities and differences among these will be important to determine the best treatment option based on tumor specific response (NSCLC versus colorectal carcinoma), potential resistance mechanisms (i.e. anticipated acquired mutation at the cysteine 12 residue) and central nervous system (CNS) activity. Additionally, further investigation evaluating the efficacy and safety of combination therapies with agents such as immune checkpoint inhibitors will be important next steps.

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Crossref · 10.1016/j.ctrv.2020.101974

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  1. [73]Janne PA, Papadopoulous K, Ou SI, Rybkin II and Johnson ML. A Phase 1 clinical trial evaluating the pharmacokinetics (PK), safety, and clinical activity of MRTX849, a mutant-selective small molecule KRAS G12C inhibitor, in advanced solid tumors. Presented at the 2019 AACR-NCI-EORTC International Conference on Molecular Targets and Cancer Therapeutics. Boston, 10 26– 30, 2019.

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Authors
Nagasaka, M., Li, Y., Sukari, A., Ou, S.-H. I., Al-Hallak, M. N., & Azmi, A. S.
Affiliations
  • St. Marianna University School of Medicine (JP)
  • Wayne State University (US)
  • University of California, Irvine (US)
Corresponding author
  • Nagasaka, Misako
  • Li, Yiwei
  • Sukari, Ammar
  • Ou, Sai-Hong Ignatius
  • Azmi, Asfar S.
Venue
Cancer Treatment Reviews
Publisher
Elsevier BV
Published
2020-03
Volume
84
Pages
101974
ISSN
0305-7372 (ISSN-L)
OpenAlex
W3001127305
Cited by
185
References
78
Citations by year
2026: 7 · 2025: 14 · 2024: 18 · 2023: 25 · 2022: 35 · 2021: 57 · 2020: 29
FWCI
3.54
Type
journal article
Language
en
Open access
Locations
  • Cancer Treatment Reviews (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
National Cancer Institute
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Kinase Regulation and GTPase Signaling
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Melanoma and MAPK Pathways
Keywords
KRAS G12C, covalent inhibitors, sotorasib, adagrasib, non-small cell lung cancer, colorectal cancer, acquired resistance, CNS activity, immune checkpoint inhibitors, combination therapy, small-molecule drug design
MeSH terms
Antineoplastic Agents, Humans, Mutation, Neoplasms, Prognosis, Proto-Oncogene Proteins p21(ras), Molecular Targeted Therapy

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