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Qi X, Shi Q, Xuhong J, Zhang Y, Jiang J. Pyrotinib-based therapeutic approaches for HER2-positive breast cancer: the time is now. Breast Cancer Res 2023; 25:113. [PMID: 37789330 PMCID: PMC10546716 DOI: 10.1186/s13058-023-01694-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 08/05/2023] [Indexed: 10/05/2023] Open
Abstract
Human epidermal growth factor receptor 2 (HER2)-positive breast cancer (BC) is a highly aggressive subtype associated with poor prognosis. The advent of HER2-targeted drugs, including monoclonal antibodies, tyrosine-kinase inhibitors (TKIs) and antibody-drug conjugates, has yielded improved prognosis for patients. Compared with widely used monoclonal antibodies, small-molecule TKIs have unique advantages including oral administration and favorable penetration of blood-brain barrier for brain metastatic BC, and reduced cardiotoxicity. Pyrotinib is an irreversible TKI of the pan-ErbB receptor, and has recently been shown to be clinically effective for the treatment of HER2-positive BC in metastatic and neoadjuvant settings. This review highlights the development on the application of pyrotinib-based therapeutic approaches in the clinical settings of HER2-positive BC.
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Affiliation(s)
- Xiaowei Qi
- Department of Breast and Thyroid Surgery, Southwest Hospital, Army Medical University, Chongqing, 400038, China
| | - Qiyun Shi
- Department of Breast and Thyroid Surgery, Southwest Hospital, Army Medical University, Chongqing, 400038, China
- The Eighth Medical Center of Chinese PLA General Hospital, Beijing, 100091, China
| | - Juncheng Xuhong
- Department of Breast and Thyroid Surgery, Southwest Hospital, Army Medical University, Chongqing, 400038, China
- Shigatse Branch, Xinqiao Hospital, Army Medical University, Shigatse, 857000, China
| | - Yi Zhang
- Department of Breast and Thyroid Surgery, Southwest Hospital, Army Medical University, Chongqing, 400038, China.
| | - Jun Jiang
- Department of Breast and Thyroid Surgery, Southwest Hospital, Army Medical University, Chongqing, 400038, China.
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Tian H, Qu M, Zhang G, Yuan L, Shi Q, Wang Y, Yang Y, Zhang Y, Qi X. Dramatic Response to Pyrotinib and T-DM1 in HER2-Negative Metastatic Breast Cancer With 2 Activating HER2 Mutations. Oncologist 2023:7147272. [PMID: 37120151 DOI: 10.1093/oncolo/oyad122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 03/28/2023] [Indexed: 05/01/2023] Open
Abstract
HER2 signaling is activated in response to somatic HER2 mutations, which are often found in invasive lobular breast cancer (ILC) and are associated with poor prognosis. Tyrosine kinase inhibitors (TKIs) have demonstrated considerable antitumor activity in patients with HER2-mutated advanced breast cancer (BC). Further, several clinical trials have indicated that HER2-targeted antibody-drug conjugates (ADCs) exhibit promising efficacy in lung cancer with HER2 mutations, and the efficacy of ADCs against HER2-mutated BC is currently being evaluated. Several preclinical studies have demonstrated that the therapeutic efficacy of ADCs in HER2-mutated cancer can be enhanced by the addition of irreversible TKIs, but the potential of such a combined treatment regimen for the treatment of HER2-mutated BC has not been reported. Herein, we describe a case in which a patient with estrogen receptor-positive/HER2-negative metastatic ILC with 2 activating HER2 mutations (D769H and V777L) exhibited a significant and durable response to anti-HER2 treatment with pyrotinib (an irreversible TKI) in combination with ado-trastuzumab emtansine, which was administered after multiple lines of therapy that had resulted in disease progression. Further, based on the evidence from the present case, TKI plus ADC seems to be a promising combination anti-HER2 regimen for patients with HER2-negative/HER2-mutated advanced BC, although further rigorous studies are warranted to confirm these findings.
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Affiliation(s)
- Hao Tian
- Department of Breast and Thyroid Surgery, Southwest Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Man Qu
- Department of Breast and Thyroid Surgery, Southwest Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Guozhi Zhang
- Department of Breast and Thyroid Surgery, Southwest Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Long Yuan
- Department of Breast and Thyroid Surgery, Southwest Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Qiyun Shi
- Department of Breast and Thyroid Surgery, Southwest Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Yinhuan Wang
- Department of Breast and Thyroid Surgery, Southwest Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Ying Yang
- Department of Breast and Thyroid Surgery, Southwest Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Yi Zhang
- Department of Breast and Thyroid Surgery, Southwest Hospital, Army Medical University, Chongqing, People's Republic of China
| | - Xiaowei Qi
- Department of Breast and Thyroid Surgery, Southwest Hospital, Army Medical University, Chongqing, People's Republic of China
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