Cited by 57Lung Cancer Treatments and MutationsHER2/EGFR in Cancer ResearchCancer Genomics and Diagnostics

Targeting HER2 Exon 20 Insertion–Mutant Lung Adenocarcinoma with a Novel Tyrosine Kinase Inhibitor Mobocertinib

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Han, Han, Li, Shuai, Chen, Ting, Fitzgerald, Michael, Liu, Shengwu, Peng, Chengwei, Tang, Kwan Ho, Cao, Shougen +21 more·2021·Cancer Research

Published version of a preprint

Abstract

No targeted treatments are currently approved for HER2 exon 20 insertion–mutant lung adenocarcinoma patients. Mobocertinib (TAK-788) is a potent irreversible tyrosine kinase inhibitor (TKI) designed to target human epidermal growth factor receptor 2 (HER2/ERBB2) exon 20 insertion mutations. However, the function of mobocertinib on HER2 exon 20 insertion–mutant lung cancer is still unclear. Here we conducted systematic characterization of preclinical models to understand the activity profile of mobocertinib against HER2 exon 20 insertions. In HER2 exon 20 insertion–mutant cell lines, the IC50 of mobocertinib was higher than poziotinib and comparable with or slightly lower than afatinib, neratinib, and pyrotinib. Mobocertinib had the lowest HER2 exon 20 insertion IC50/wild-type (WT) EGFR IC50 ratio, indicating that mobocertinib displayed the best selectivity profile in these models. Also, mobocertinib showed strong inhibitory activity in HER2 exon 20YVMA allograft and patient-derived xenograft models. In genetically engineered mouse models, HER2 exon 20G776>VC lung tumors exhibited a sustained complete response to mobocertinib, whereas HER2 exon 20YVMA tumors showed only partial and transient response. Combined treatment with a second antibody–drug conjugate (ADC) against HER2, ado-trastuzumab emtansine (T-DM1), synergized with mobocertinib in HER2 exon 20YVMA tumors. In addition to the tumor cell autonomous effect, sustained tumor growth control derived from M1 macrophage infiltration and CD4+ T-cell activation. These findings support the ongoing clinical development of mobocertinib (NCT02716116) and provide a rationale for future clinical evaluation of T-DM1 combinational therapy in HER2 exon 20YVMA insertion–mutant lung adenocarcinoma patients. Significance: This study elucidates the potent inhibitory activity of mobocertinib against HER2 exon 20 insertion–mutant lung cancer and the synergic effect of combined mobocertinib and T-DM1, providing a strong rationale for clinical investigation.

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  • Structurally similar to osimertinib, mobocertinib possesses an enhanced inhibitory effect against EGFR exon 20 insertion and other non-sensitive mutations, as well as some inhibitory effect against lung cancer with HER2 exon 20 insertion mutations.

    “Structurally similar to osimertinib, it possesses an enhanced inhibitory effect against EGFR exon 20 insertion and other non-sensitive mutations, as well as some inhibitory effect against lung cancer with HER2 exon 20 insertion mutations.150,151”

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Authors
Han, H., Li, S., Chen, T., Fitzgerald, M., Liu, S., Peng, C., Tang, K. H., Cao, S., Chouitar, J., Wu, J., Peng, D., Deng, J., Gao, Z., Baker, T. E., Li, F., Zhang, H., Pan, Y., Ding, H., Hu, H., Pyon, V., Thakurdin, C., Papadopoulos, E., Tang, S., Gonzalvez, F., Chen, H., Rivera, V. M., Brake, R., Vincent, S., & Wong, K.-K.
Affiliations
  • Fudan University Shanghai Cancer Center (CN)
  • NYU Langone Health (US)
  • 3Millennium Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited.
  • Harvard University (US)
  • 5ARIAD Pharmaceuticals, Inc., Cambridge, Massachusetts, a wholly owned subsidiary of Takeda Pharmaceutical Company Limited.
Corresponding author
  • Li, Shuai
  • Vincent, Sylvie
  • Wong, Kwok-Kin
Venue
Cancer Research
Published
2021-08-11
Volume
81
Issue
20
Pages
5311-5324
ISSN
  • 0008-5472 (ISSN-L)
  • 1538-7445
OpenAlex
W3187778387
Cited by
57
References
43
Citations by year
2026: 4 · 2025: 14 · 2024: 7 · 2023: 17 · 2022: 12 · 2021: 3
FWCI
6.32
Type
journal article
Language
en
Open access
Locations
  • Cancer Research (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (CA154303, CA098101)
  • Takeda Oncology
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Lung Cancer Treatments and Mutations
  • Health Sciences › Medicine › Oncology › HER2/EGFR in Cancer Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer Genomics and Diagnostics
Keywords
mobocertinib, lung adenocarcinoma, tyrosine kinase inhibitors, trastuzumab emtansine, antibody-drug conjugates, combination therapy, patient-derived xenografts, genetically engineered mouse models, tumor-infiltrating macrophages, CD4+ T cell activation, targeted therapy, poziotinib
MeSH terms
Adenocarcinoma of Lung, Ado-Trastuzumab Emtansine, Animals, Antineoplastic Combined Chemotherapy Protocols, Exons, Female, Humans, Lung Neoplasms, Tumor Cells, Cultured, Gene Expression Regulation, Neoplastic, Mice, SCID, Mice, Inbred NOD, Apoptosis, Antibodies, Bispecific, Erb-b2 Receptor Tyrosine Kinases, Xenograft Model Antitumor Assays, Cell Proliferation, Mice, INDEL Mutation

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