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Elamin YY, Robichaux JP, Carter BW, Altan M, Gibbons DL, Fossella FV, Lam VK, Patel AB, Negrao MV, Le X, Mott FE, Zhang J, Feng L, Blumenschein G, Tsao AS, Heymach JV. Poziotinib for Patients With HER2 Exon 20 Mutant Non-Small-Cell Lung Cancer: Results From a Phase II Trial. J Clin Oncol 2022; 40:702-709. [PMID: 34550757 PMCID: PMC8887948 DOI: 10.1200/jco.21.01113] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
PURPOSE Targeted therapies against non-small-cell lung cancer (NSCLC) harboring HER2 mutations remain an unmet need. In this study, we assessed the efficacy and safety of poziotinib in patients with HER2 exon 20 mutant advanced NSCLC in a single-arm, open-label, phase II study. PATIENTS AND METHODS Patients with advanced HER2 exon 20 mutant NSCLC were enrolled to receive poziotinib at a dose of 16 mg/d for 28-day cycles. The primary end point was objective response rate per RECIST version 1.1. Confirmatory scans were performed at least 28 days from initial radiologic response. RESULTS Thirty patients received poziotinib treatment. At baseline, 90% of patients received prior platinum-based chemotherapy and 53% had two lines or more prior systemic therapies. As of data cutoff on March 1, 2021, the confirmed objective response rate was 27% (95% CI, 12 to 46). Responses were observed across HER2 exon 20 mutation subtypes. The median duration of response was 5.0 months (95% CI, 4.0 to not estimable). The median progression-free survival was 5.5 months (95% CI, 4.0 to 7.0). The median overall survival was 15 months (95% CI, 9.0 to not estimable). The most common grade 3 treatment-related adverse events were skin rash (47%) and diarrhea (20%). There was one possible treatment-related death because of pneumonitis. CONCLUSION Poziotinib showed promising antitumor activity in patients with HER2 exon 20 mutant NSCLC including patients who had previously received platinum-based chemotherapy.
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Affiliation(s)
- Yasir Y. Elamin
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Jacqulyne P. Robichaux
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Brett W. Carter
- Department of Thoracic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Mehmet Altan
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Don L. Gibbons
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Frank V. Fossella
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Vincent K. Lam
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX,Department of Medicine, Johns Hopkins Sidney Kimmel Cancer Center, Baltimore, MD
| | - Anisha B. Patel
- Department of Dermatology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Marcelo V. Negrao
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Xiuning Le
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Frank E. Mott
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Jianjun Zhang
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Lei Feng
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - George Blumenschein
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Anne S. Tsao
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - John V. Heymach
- Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX,John V. Heymach, MD, PhD, Department of Thoracic/Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Unit 432, PO Box 301402, 1500 Holcombe Blvd, Houston, TX 77230; e-mail:
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Saura C, Matito J, Oliveira M, Wildiers H, Brufksy AM, Waters SH, Hurvitz SA, Moy B, Kim SB, Gradishar WJ, Queiroz GS, Cronemberger E, Wallweber GJ, Bebchuk J, Keyvanjah K, Lalani AS, Bryce R, Vivancos A, Eli LD, Delaloge S. Biomarker Analysis of the Phase III NALA Study of Neratinib + Capecitabine versus Lapatinib + Capecitabine in Patients with Previously Treated Metastatic Breast Cancer. Clin Cancer Res 2021; 27:5818-5827. [PMID: 34380637 PMCID: PMC9401509 DOI: 10.1158/1078-0432.ccr-21-1584] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 07/09/2021] [Accepted: 08/06/2021] [Indexed: 01/07/2023]
Abstract
PURPOSE Neratinib plus capecitabine (N+C) demonstrated significant progression-free survival (PFS) benefit in NALA (NCT01808573), a randomized phase III trial comparing N+C with lapatinib + capecitabine (L+C) in 621 patients with HER2-positive (HER2+) metastatic breast cancer (MBC) who had received ≥2 prior HER2-directed regimens in the metastatic setting. We evaluated correlations between exploratory biomarkers and PFS. PATIENTS AND METHODS Somatic mutations were evaluated by next-generation sequencing on primary or metastatic samples. HER2 protein expression was evaluated by central IHC, H-score, and VeraTag/HERmark. p95 expression (truncated HER2) was measured by VeraTag. HRs were estimated using unstratified Cox proportional hazards models. RESULTS Four hundred and twenty samples had successful sequencing: 34.0% had PIK3CA mutations and 5.5% had HER2 (ERBB2) mutations. In the combined patient populations, PIK3CA mutations trended toward shorter PFS [wild-type vs. mutant, HR = 0.81; 95% confidence interval (CI), 0.64-1.03], whereas HER2 mutations trended toward longer PFS [HR = 1.69 (95% CI, 0.97-3.29)]. Higher HER2 protein expression was associated with longer PFS [IHC 3+ vs. 2+, HR = 0.67 (0.54-0.82); H-score ≥240 versus <240, HR = 0.77 (0.63-0.93); HERmark positive vs. negative, HR = 0.76 (0.59-0.98)]. Patients whose tumors had higher HER2 protein expression (any method) derived an increased benefit from N+C compared with L+C [IHC 3+, HR = 0.64 (0.51-0.81); H-score ≥ 240, HR = 0.54 (0.41-0.72); HERmark positive, HR = 0.65 (0.50-0.84)], as did patients with high p95 [p95 ≥2.8 relative fluorescence (RF)/mm2, HR = 0.66 (0.50-0.86) vs. p95 < 2.8 RF/mm2, HR = 0.91 (0.61-1.36)]. CONCLUSIONS PIK3CA mutations were associated with shorter PFS whereas higher HER2 expression was associated with longer PFS. Higher HER2 protein expression was also associated with a greater benefit for N+C compared with L+C.
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Affiliation(s)
- Cristina Saura
- Vall d'Hebron University Hospital, Barcelona, Spain.
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron University Hospital Campus, Barcelona, Spain
- SOLTI Innovative Breast Cancer Research, Barcelona, Spain
| | - Judit Matito
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron University Hospital Campus, Barcelona, Spain
| | - Mafalda Oliveira
- Vall d'Hebron University Hospital, Barcelona, Spain
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron University Hospital Campus, Barcelona, Spain
- SOLTI Innovative Breast Cancer Research, Barcelona, Spain
| | | | | | | | - Sara A Hurvitz
- University of California at Los Angeles, Los Angeles, California
| | - Beverly Moy
- Massachusetts General Hospital Cancer Center, Boston, Massachusetts
| | - Sung-Bae Kim
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea (South)
| | - William J Gradishar
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University, Chicago, Illinois
| | | | | | - Gerald J Wallweber
- Monogram Biosciences, Inc., Laboratory Corporation of America Holdings, South San Francisco, California
| | | | | | | | | | - Ana Vivancos
- Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron University Hospital Campus, Barcelona, Spain
- SOLTI Innovative Breast Cancer Research, Barcelona, Spain
| | - Lisa D Eli
- Puma Biotechnology Inc., Los Angeles, California
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Kang M, Hong J, Jung M, Kwon SP, Song SY, Kim HY, Lee JR, Kang S, Han J, Koo JH, Ryu JH, Lim S, Sohn HS, Choi JM, Doh J, Kim BS. T-Cell-Mimicking Nanoparticles for Cancer Immunotherapy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2003368. [PMID: 32812291 DOI: 10.1002/adma.202003368] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 06/26/2020] [Indexed: 06/11/2023]
Abstract
Cancer immunotherapies, including adoptive T cell transfer and immune checkpoint blockades, have recently shown considerable success in cancer treatment. Nevertheless, transferred T cells often become exhausted because of the immunosuppressive tumor microenvironment. Immune checkpoint blockades, in contrast, can reinvigorate the exhausted T cells; however, the therapeutic efficacy is modest in 70-80% of patients. To address some of the challenges faced by the current cancer treatments, here T-cell-membrane-coated nanoparticles (TCMNPs) are developed for cancer immunotherapy. Similar to cytotoxic T cells, TCMNPs can be targeted at tumors via T-cell-membrane-originated proteins and kill cancer cells by releasing anticancer molecules and inducing Fas-ligand-mediated apoptosis. Unlike cytotoxic T cells, TCMNPs are resistant to immunosuppressive molecules (e.g., transforming growth factor-β1 (TGF-β1)) and programmed death-ligand 1 (PD-L1) of cancer cells by scavenging TGF-β1 and PD-L1. Indeed, TCMNPs exhibit higher therapeutic efficacy than an immune checkpoint blockade in melanoma treatment. Furthermore, the anti-tumoral actions of TCMNPs are also demonstrated in the treatment of lung cancer in an antigen-nonspecific manner. Taken together, TCMNPs have a potential to improve the current cancer immunotherapy.
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Affiliation(s)
- Mikyung Kang
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jihye Hong
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Mungyo Jung
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Sung Pil Kwon
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seuk Young Song
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Han Young Kim
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ju-Ro Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seokyung Kang
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jin Han
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ja-Hyun Koo
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
- Research Institute for Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Ju Hee Ryu
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Songhyun Lim
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hee Su Sohn
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Je-Min Choi
- Department of Life Science, College of Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
- Research Institute for Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
- Research Institute for Convergence of Basic Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Junsang Doh
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Byung-Soo Kim
- Interdisciplinary Program for Bioengineering, Seoul National University, Seoul, 08826, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University, Seoul, 08826, Republic of Korea
- Institute of Chemical Processes, Institute of Engineering Research, BioMAX, Seoul National University, Seoul, 08826, Republic of Korea
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4
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Robichaux JP, Elamin YY, Vijayan RSK, Nilsson MB, Hu L, He J, Zhang F, Pisegna M, Poteete A, Sun H, Li S, Chen T, Han H, Negrao MV, Ahnert JR, Diao L, Wang J, Le X, Meric-Bernstam F, Routbort M, Roeck B, Yang Z, Raymond VM, Lanman RB, Frampton GM, Miller VA, Schrock AB, Albacker LA, Wong KK, Cross JB, Heymach JV. Pan-Cancer Landscape and Analysis of ERBB2 Mutations Identifies Poziotinib as a Clinically Active Inhibitor and Enhancer of T-DM1 Activity. Cancer Cell 2019; 36:444-457.e7. [PMID: 31588020 PMCID: PMC6944069 DOI: 10.1016/j.ccell.2019.09.001] [Citation(s) in RCA: 128] [Impact Index Per Article: 25.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 07/29/2019] [Accepted: 09/01/2019] [Indexed: 12/16/2022]
Abstract
We characterized the landscape and drug sensitivity of ERBB2 (HER2) mutations in cancers. In 11 datasets (n = 211,726), ERBB2 mutational hotspots varied across 25 tumor types. Common HER2 mutants yielded differential sensitivities to eleven EGFR/HER2 tyrosine kinase inhibitors (TKIs) in vitro, and molecular dynamics simulations revealed that mutants with a reduced drug-binding pocket volume were associated with decreased affinity for larger TKIs. Overall, poziotinib was the most potent HER2 mutant-selective TKI tested. Phase II clinical testing in ERBB2 exon 20-mutant non-small cell lung cancer resulted in a confirmed objective response rate of 42% in the first 12 evaluable patients. In pre-clinical models, poziotinib upregulated HER2 cell-surface expression and potentiated the activity of T-DM1, resulting in complete tumor regression with combination treatment.
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Affiliation(s)
- Jacqulyne P Robichaux
- Department of Thoracic/Head and Neck Medical Oncology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yasir Y Elamin
- Department of Thoracic/Head and Neck Medical Oncology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - R S K Vijayan
- Institute for Applied Cancer Science, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Monique B Nilsson
- Department of Thoracic/Head and Neck Medical Oncology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lemei Hu
- Department of Thoracic/Head and Neck Medical Oncology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Junqin He
- Department of Thoracic/Head and Neck Medical Oncology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Fahao Zhang
- Department of Thoracic/Head and Neck Medical Oncology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Marlese Pisegna
- Department of Thoracic/Head and Neck Medical Oncology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Alissa Poteete
- Department of Thoracic/Head and Neck Medical Oncology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Huiying Sun
- Department of Thoracic/Head and Neck Medical Oncology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Shuai Li
- Perlmutter Cancer Center, New York University Langone Medical Center, New York, NY 10016, USA
| | - Ting Chen
- Perlmutter Cancer Center, New York University Langone Medical Center, New York, NY 10016, USA
| | - Han Han
- Perlmutter Cancer Center, New York University Langone Medical Center, New York, NY 10016, USA
| | - Marcelo Vailati Negrao
- Department of Thoracic/Head and Neck Medical Oncology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jordi Rodon Ahnert
- Investigative Cancer Therapeutics, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Lixia Diao
- Department of Bioinformatics and Computational Biology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Jing Wang
- Department of Hematopathology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Xiuning Le
- Department of Thoracic/Head and Neck Medical Oncology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Funda Meric-Bernstam
- Investigative Cancer Therapeutics, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Mark Routbort
- Department of Hematopathology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Brent Roeck
- Spectrum Pharmaceuticals, Irvine, CA 92618, USA
| | - Zane Yang
- Spectrum Pharmaceuticals, Irvine, CA 92618, USA
| | | | | | | | | | | | | | - Kwok-Kin Wong
- Perlmutter Cancer Center, New York University Langone Medical Center, New York, NY 10016, USA
| | - Jason B Cross
- Institute for Applied Cancer Science, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - John V Heymach
- Department of Thoracic/Head and Neck Medical Oncology, MD Anderson Cancer Center, Houston, TX 77030, USA.
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Preclinical Characteristics of the Irreversible Pan-HER Kinase Inhibitor Neratinib Compared with Lapatinib: Implications for the Treatment of HER2-Positive and HER2-Mutated Breast Cancer. Cancers (Basel) 2019; 11:cancers11060737. [PMID: 31141894 PMCID: PMC6628314 DOI: 10.3390/cancers11060737] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/16/2019] [Accepted: 05/17/2019] [Indexed: 12/13/2022] Open
Abstract
An estimated 15–20% of breast cancers overexpress human epidermal growth factor receptor 2 (HER2/ERBB2/neu). Two small-molecule tyrosine kinase inhibitors (TKIs), lapatinib and neratinib, have been approved for the treatment of HER2-positive (HER2+) breast cancer. Lapatinib, a reversible epidermal growth factor receptor (EGFR/ERBB1/HER1) and HER2 TKI, is used for the treatment of advanced HER2+ breast cancer in combination with capecitabine, in combination with trastuzumab in patients with hormone receptor-negative metastatic breast cancer, and in combination with an aromatase inhibitor for the first-line treatment of HER2+ breast cancer. Neratinib, a next-generation, irreversible pan-HER TKI, is used in the US for extended adjuvant treatment of adult patients with early-stage HER2+ breast cancer following 1 year of trastuzumab. In Europe, neratinib is used in the extended adjuvant treatment of adult patients with early-stage hormone receptor-positive HER2+ breast cancer who are less than 1 year from the completion of prior adjuvant trastuzumab-based therapy. Preclinical studies have shown that these agents have distinct properties that may impact their clinical activity. This review describes the preclinical characterization of lapatinib and neratinib, with a focus on the differences between these two agents that may have implications for patient management.
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6
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Gow CH, Chang HT, Lim CK, Liu CY, Chen JS, Shih JY. Comparable clinical outcomes in patients with HER2-mutant and EGFR-mutant lung adenocarcinomas. Genes Chromosomes Cancer 2017; 56:373-381. [PMID: 28063177 DOI: 10.1002/gcc.22442] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 12/30/2016] [Accepted: 12/30/2016] [Indexed: 11/10/2022] Open
Abstract
HER2 is a major proliferative driver in lung cancer. HER2 gene aberrations impact the prognosis of lung adenocarcinoma (ADC). A one-step reverse transcription-polymerase chain reaction was performed using RNA samples from 888 Asian lung cancer patients to detect HER2, EGFR, KRAS, ALK, and ROS1 mutations. The demographic data and treatment outcomes of HER2 mutation-positive lung ADC patients were analyzed and compared to those with HER2 mutation-negative tumors. HER2 mutation was identified in 40 (4.5%) lung ADC patients. HER2 mutations tended to occur in male patients with advanced-stage disease and never-smokers. A775_G776insYVMA (n = 22, 55%) was the most prevalent HER2 mutation, followed by P780_Y781insGSP (n = 4, 10%). For patients diagnosed with stage-IIIB/IV disease, HER2-mutant patients showed clinical outcomes comparable to EGFR-mutant patients (P = 0.721, log-rank test) and a better overall survival (OS) compared to patients lacking driver mutations in the investigated genes (P = 0.033, Breslow test). Specifically, lung ADC patients with stage-IV HER2-mutant tumors treated with chemotherapy or targeted agents, even without afatinib or anti-HER2 targeted therapy, showed similar clinical outcomes to lung ADC patients harboring EGFR exon 19 deletion or L858R mutations (P = 0.870). In addition, multivariate analysis indicated that HER2 mutation status was not a major risk factor for diminished OS in stage-IV lung cancer. In conclusion, lung ADC harboring HER2 mutations showed distinct characteristics from other driver mutations, including increased chemosensitivity with in advanced stage disease.
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Affiliation(s)
- Chien-Hung Gow
- Department of Internal Medicine, Far Eastern Memorial Hospital, New Taipei City, Taiwan.,Department of Healthcare Information and Management, Ming-Chuan University, Taiwan.,Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Hou-Tai Chang
- Department of Internal Medicine, Far Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Chor-Kuan Lim
- Department of Internal Medicine, Far Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Chao-Yu Liu
- Department of Surgery, Far Eastern Memorial Hospital, New Taipei City, Taiwan
| | - Jin-Shing Chen
- Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Jin-Yuan Shih
- Department of Internal Medicine, National Taiwan University Hospital and College of Medicine, National Taiwan University, Taipei, Taiwan.,Graduate Institute of Clinical Medicine, National Taiwan University, Taipei, Taiwan.,Department of Medical Research, National Taiwan University Hospital, Taipei, Taiwan
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7
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Molecular dynamics simulations reveal the allosteric effect of F1174C resistance mutation to ceritinib in ALK-associated lung cancer. Comput Biol Chem 2016; 65:54-60. [DOI: 10.1016/j.compbiolchem.2016.10.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 09/13/2016] [Accepted: 10/05/2016] [Indexed: 01/14/2023]
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8
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HER2 missense mutations have distinct effects on oncogenic signaling and migration. Proc Natl Acad Sci U S A 2015; 112:E6205-14. [PMID: 26508629 DOI: 10.1073/pnas.1516853112] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Recurrent human epidermal growth factor receptor 2 (HER2) missense mutations have been reported in human cancers. These mutations occur primarily in the absence of HER2 gene amplification such that most HER2-mutant tumors are classified as "negative" by FISH or immunohistochemistry assays. It remains unclear whether nonamplified HER2 missense mutations are oncogenic and whether they are targets for HER2-directed therapies that are currently approved for the treatment of HER2 gene-amplified breast cancers. Here we functionally characterize HER2 kinase and extracellular domain mutations through gene editing of the endogenous loci in HER2 nonamplified human breast epithelial cells. In in vitro and in vivo assays, the majority of HER2 missense mutations do not impart detectable oncogenic changes. However, the HER2 V777L mutation increased biochemical pathway activation and, in the context of a PIK3CA mutation, enhanced migratory features in vitro. However, the V777L mutation did not alter in vivo tumorigenicity or sensitivity to HER2-directed therapies in proliferation assays. Our results suggest the oncogenicity and potential targeting of HER2 missense mutations should be considered in the context of cooperating genetic alterations and provide previously unidentified insights into functional analysis of HER2 mutations and strategies to target them.
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Shen X, Chen B, Ma Z, Xie B, Cao X, Yang T, Zhao Y, Qin J, Li J, Cao F, Chen X. A systematic analysis of the resistance and sensitivity of HER2YVMA receptor tyrosine kinase mutant to tyrosine kinase inhibitors in HER2-positive lung cancer. J Recept Signal Transduct Res 2015; 36:89-97. [PMID: 26391018 DOI: 10.3109/10799893.2015.1049361] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Human epidermal growth factor receptor 2 (HER2) has become a well-established target for the treatment of HER2-positive lung cancer. However, a frequently observed in-frame mutation that inserts amino acid quadruplex Tyr776-Val777-Met778-Ala779 at G776 (G776(YVMA)) in HER2 kinase domain can cause drug resistance and sensitivity, largely limiting the application of reversible tyrosine kinase inhibitors in lung cancer therapy. A systematic investigation of the intermolecular interactions between the HER2(YVMA) mutant and clinical small-molecule inhibitors would help to establish a complete picture of drug response to HER2 G776(YVMA) insertion in lung cancer, and to design new tyrosine kinase inhibitors with high potency and selectivity to target the lung cancer-related HER2(YVMA) mutant. Here, we combined homology modeling, ligand grafting, structure minimization, molecular simulation and binding affinity analysis to profile a number of tyrosine kinase inhibitors against the G776(YVMA) insertion in HER2. It is found that the insertion is far away from HER2 active pocket and thus cannot contact inhibitor ligand directly. However, the insertion is expected to induce marked allosteric effect on some regions around the pocket, including A-loop and hinges connecting between the N- and C-lobes of HER2 kinase domain, which may exert indirect influence to inhibitor binding. Most investigated inhibitors exhibit weak binding strength to both wild-type and mutant HER2, which can be attributed to steric hindrance that impairs ligand compatibility with HER2 active pocket. However, the cognate inhibitor lapatinib and the non-cognate inhibitor bosutinib were predicted to have low affinity for wild-type HER2 but high affinity for HER2(YVMA) mutant, which was confirmed by subsequent kinase assay experiments; the inhibitory potencies of bosutinib against wild-type and mutant HER2 were determined to be IC(50) > 1000 and =27 nM, respectively, suggesting that the bosutinib might be exploited as a selective inhibitor for mutant over wild-type HER2. Structural examination revealed that formation of additional non-bonded interactions such as hydrogen bonds and hydrophobic contacts with HER2 A-loop region due to G776(YVMA) insertion is the primary factor to improve bosutinib affinity upon the mutation.
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Affiliation(s)
- Xiaokun Shen
- a Institute of Cell Biology, Zhejiang University , Hangzhou , P.R. China .,b Department of Surgical Oncology , Taizhou Hospital, Wenzhou Medical University , Taizhou , P.R. China , and
| | - Beibei Chen
- c Department of Internal Oncology , Henan Cancer Hospital, The Affiliated Cancer Hospital of Zhengzhou University , Zhengzhou , P.R. China
| | - Zhaosheng Ma
- b Department of Surgical Oncology , Taizhou Hospital, Wenzhou Medical University , Taizhou , P.R. China , and
| | - Bojian Xie
- b Department of Surgical Oncology , Taizhou Hospital, Wenzhou Medical University , Taizhou , P.R. China , and
| | - Xinguang Cao
- c Department of Internal Oncology , Henan Cancer Hospital, The Affiliated Cancer Hospital of Zhengzhou University , Zhengzhou , P.R. China
| | - Tiejun Yang
- c Department of Internal Oncology , Henan Cancer Hospital, The Affiliated Cancer Hospital of Zhengzhou University , Zhengzhou , P.R. China
| | - Yuzhou Zhao
- c Department of Internal Oncology , Henan Cancer Hospital, The Affiliated Cancer Hospital of Zhengzhou University , Zhengzhou , P.R. China
| | - Jianjun Qin
- c Department of Internal Oncology , Henan Cancer Hospital, The Affiliated Cancer Hospital of Zhengzhou University , Zhengzhou , P.R. China
| | - Jicheng Li
- a Institute of Cell Biology, Zhejiang University , Hangzhou , P.R. China
| | - Feilin Cao
- b Department of Surgical Oncology , Taizhou Hospital, Wenzhou Medical University , Taizhou , P.R. China , and
| | - Xiaobing Chen
- c Department of Internal Oncology , Henan Cancer Hospital, The Affiliated Cancer Hospital of Zhengzhou University , Zhengzhou , P.R. China
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