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Activating HER2 Mutations in HER2 Gene Amplification Negative Breast Cancer
Open accessAbstract
Data from 8 breast cancer genome-sequencing projects identified 25 patients with HER2 somatic mutations in cancers lacking HER2 gene amplification. To determine the phenotype of these mutations, we functionally characterized 13 HER2 mutations using in vitro kinase assays, protein structure analysis, cell culture, and xenograft experiments. Seven of these mutations are activating mutations, including G309A, D769H, D769Y, V777L, P780ins, V842I, and R896C. HER2 in-frame deletion 755–759, which is homologous to EGF receptor (EGFR) exon 19 in-frame deletions, had a neomorphic phenotype with increased phosphorylation of EGFR or HER3. L755S produced lapatinib resistance, but was not an activating mutation in our experimental systems. All of these mutations were sensitive to the irreversible kinase inhibitor, neratinib. These findings show that HER2 somatic mutation is an alternative mechanism to activate HER2 in breast cancer and they validate HER2 somatic mutations as drug targets for breast cancer treatment. Significance: We show that the majority of HER2 somatic mutations in breast cancer patients are activating mutations that likely drive tumorigenesis. Several patients had mutations that are resistant to the reversible HER2 inhibitor lapatinib, but are sensitive to the irreversible HER2 inhibitor, neratinib. Our results suggest that patients with HER2 mutation–positive breast cancers could benefit from existing HER2-targeted drugs. Cancer Discov; 3(2); 224–37. ©2013 AACR. See related commentary by Weigelt and Reis-Filho, p. 145 This article is highlighted in the In This Issue feature, p. 125
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Comprehensive review of targeted therapy for colorectal cancer
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ERBB Receptors: From Oncogene Discovery to Basic Science to Mechanism-Based Cancer Therapeutics
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HER kinase inhibition in patients with HER2- and HER3-mutant cancers
Hyman, D. M., Piha-Paul, S. A., Won, H., Rodon, J., Saura, C., Shapiro, G. I., Juric, D., Quinn, D. I., Moreno, V., Doger, B., et al. (2018) · Nature · doi:10.1038/nature25475 · Cited by 780
Metadata
- Authors
- Bose, R., Kavuri, S. M., Searleman, A. C., Shen, W., Shen, D., Koboldt, D. C., Monsey, J., Goel, N., Aronson, A. B., Li, S., Ma, C. X., Ding, L., Mardis, E. R., & Ellis, M. J.
- Venue
- Cancer Discovery
- Published
- 2013-02-01
- Volume
- 3
- Issue
- 2
- Pages
- 224-237
- ISSN
- 2159-8274 (ISSN-L)
- 2159-8290
- OpenAlex
- W2095659509
- Cited by
- 868
- References
- 9
- FWCI
- 26.70
- Type
- journal article
- Language
- en
- Open access
- green
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- Bose, R., Kavuri, S. M., Searleman, A. C., Shen, W., Shen, D., Koboldt, D. C., Monsey, J., Goel, N., Aronson, A. B., Li, S., Ma, C. X., Ding, L., Mardis, E. R., & Ellis, M. J. (2013). Activating HER2 Mutations in HER2 Gene Amplification Negative Breast Cancer. Cancer Discovery. https://doi.org/10.1158/2159-8290.cd-12-0349
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