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Cascinu S, Di Bartolomeo M, Lonardi S, Beretta G, Fornaro L, De Vita F. The evolving strategies for the management of patients with metastatic gastric cancer: A narrative review and expert opinion. Front Med (Lausanne) 2022; 9:1002435. [PMID: 36590964 PMCID: PMC9799163 DOI: 10.3389/fmed.2022.1002435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022] Open
Abstract
Gastric cancer (GC) is recognized as one of the most common deadly malignancies worldwide and about 40-50% of patients present at diagnosis with an unresectable disease due to a locally advanced or already metastatic condition. Recently, therapeutic options for management of metastatic GC (mGC) have been approved allowing a potential improvement of patient cancer treatment response and also an establishment of a continuum of care for this aggressive disease. This report is the result of a literature review by an expert panel. The aim of this document is to provide evidence, wherever it is lacking, to provide expert opinion directed at strategic management of mGC, and in particular aspect at practical management where appropriate guidelines are not available. Treatment landscape with new therapeutic strategies for third line and beyond, role of imaging, prognostic factors, symptoms, and markers as well as the importance of multidisciplinary approach particularly the nutritional aspects are discussed.
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Affiliation(s)
- Stefano Cascinu
- Comprehensive Cancer Center, IRCCS Ospedale San Raffaele, Università Vita-Salute San Raffaele, Milan, Italy,*Correspondence: Stefano Cascinu,
| | - Maria Di Bartolomeo
- Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy
| | - Sara Lonardi
- Medical Oncology Unit 3, Veneto Institute of Oncology IOV - IRCCS, Padua, Italy
| | | | - Lorenzo Fornaro
- Unit of Medical Oncology, Azienda Ospedaliero Universitaria Pisana, Pisa, Italy
| | - Ferdinando De Vita
- Oncologia Medica - Dipartimento di Medicina di Precisione, Università degli Studi della Campania Luigi Vanvitelli, Naples, Italy
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Roviello G, Catalano M, Iannone LF, Marano L, Brugia M, Rossi G, Aprile G, Antonuzzo L. Current status and future perspectives in HER2 positive advanced gastric cancer. Clin Transl Oncol 2022; 24:981-996. [PMID: 35091998 DOI: 10.1007/s12094-021-02760-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 12/13/2021] [Indexed: 02/06/2023]
Abstract
Gastric cancer is one of the most common malignancy worldwide with a prognosis less than 1 year in unresectable or metastatic disease. HER2 expression is the main biomarker to lead the addition of trastuzumab to first line systemic chemotherapy improving the overall survival in advanced HER2-positivegastric adenocarcinoma. The inevitable development of resistance to trastuzumab remains a great problem inasmuch several treatment strategies that have proven effective in breast cancer failed to show clinical benefit in advanced gastric cancer. In this review, we summarize the available data on the mechanisms underlying primary and secondary resistance toHER2-targeted therapy and current challenges in the treatment of HER2-positive advanced gastric cancer refractory to trastuzumab. Further, we describe the prognostic value of new non-invasive screening techniques, the current development of novel agents such us HER2 antibody-drug conjugates and bispecific antibodies, and the strategies with antitumor activity on going.
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Affiliation(s)
- G Roviello
- Department of Health Sciences, Section of Clinical Pharmacology and Oncology, University of Florence, Viale Pieraccini, 6, 50139, Florence, Italy.
| | - M Catalano
- School of Human Health Sciences, University of Florence, Largo Brambilla 3, 50134, Florence, Italy
| | - L F Iannone
- Department of Health Science, University "Magna Graecia" of Catanzaro, Catanzaro, Italy
| | - L Marano
- Department of Medical, Surgical and NeuroSciences, Section of Surgery, Azienda Ospedaliera Universitaria Senese, University of Siena, Siena, Italy
| | - M Brugia
- Clinical Oncology Unit, Careggi University Hospital, Florence, Italy
| | - G Rossi
- Clinical Oncology Unit, Careggi University Hospital, Florence, Italy
| | - G Aprile
- Department of Oncology, San Bortolo General Hospital, AULSS8 Berica, Vicenza, Italy
| | - L Antonuzzo
- Department of Experimental and Clinical Medicine, University of Florence, 50134, Florence, Italy.,Medical Oncology Unit, Careggi University Hospital, 50134, Florence, Italy
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3
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Qin S, Ji J, Xu RH, Wang W, Tang Y, Bi F, Li J, Wang K, Xu JM, Fan Q, Su W, Shen L. Treatment Patterns and Outcomes in Chinese Patients with Gastric Cancer by HER2 Status: A Noninterventional Registry Study (EVIDENCE). Oncologist 2021; 26:e1567-e1580. [PMID: 34003545 DOI: 10.1002/onco.13826] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 12/21/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Real-world safety and effectiveness data for trastuzumab plus chemotherapy treatment of patients with HER2-positive metastatic gastric cancer (mGC) in China are lacking. PATIENTS AND METHODS EVIDENCE was a prospective, multicenter, noninterventional registry study evaluating the safety and effectiveness of trastuzumab in five cohorts of Chinese patients with gastric cancer, stratified by HER2 status and trastuzumab treatment. Effectiveness was analyzed for cohorts I (HER2-positive, trastuzumab treated), II (HER2-positive, trastuzumab untreated), and IV (HER2-negative, trastuzumab untreated); trastuzumab-related adverse events (AEs) were analyzed for cohort I. RESULTS Cohorts I, II, and IV included 174, 113, and 422 patients, respectively. Most patients received first-line chemotherapy (87.6%). Median overall survival (OS1) for first-line treatment was 22.3, 17.2, and 17.4 months in cohorts I, II, and IV, respectively. After excluding patients who had surgery, respective median OS1 was 19.9, 15.3, and 12.9 months. Respective first-line progression-free survival (PFS1) was 8.2, 6.9, and 6.2 months; and respective first-line response rates (RR) were 51.7%, 18.4%, and 32.8%. Cohort I was significantly favored over cohort II for propensity score-matched first-line median OS1 (hazard ratio [HR], 0.61), PFS1 (HR, 0.64), and RR (odds ratio, 4.93). Trastuzumab-related AEs, grade 3-5 AEs, serious AEs, and AEs with a fatal outcome occurred in 23.6%, 3.4%, 2.3%, and 0.6% of cohort I patients, respectively. CONCLUSION Safety profiles were consistent with those known for trastuzumab and chemotherapy; trastuzumab treatment improved outcomes. Our study provides real-world data supporting first-line trastuzumab plus chemotherapy in Chinese patients with HER2-positive mGC. IMPLICATIONS FOR PRACTICE This prospective, noninterventional registry study aimed to provide safety and effectiveness data for the use of trastuzumab in combination with chemotherapy in Chinese patients with HER2-positive metastatic gastric cancer (mGC) from the real-world clinical setting. Trastuzumab plus first-line chemotherapy was shown to be safe and to improve outcomes when compared with patients treated with chemotherapy alone. Trastuzumab was effective within a range of treatment regimens; subgroup analysis showed that trastuzumab paired most effectively with the XELOX regimen. This study provides real-world clinical safety and effectiveness data supporting the use of trastuzumab in the treatment of Chinese patients with HER2-positive mGC.
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Affiliation(s)
- Shukui Qin
- Nanjing Bayi Hospital of Nanjing University of Chinese Medicine, Nanjing, Jiangsu, People's Republic of China
| | - Jiafu Ji
- Peking University Cancer Hospital and Institute, Beijing, People's Republic of China
| | - Rui-Hua Xu
- Sun Yat-Sen University Cancer Center, Guangzhou, Guangdong, People's Republic of China
| | - Wei Wang
- The First People's Hospital of Foshan, Foshan, Guangdong, People's Republic of China
| | - Yong Tang
- Affiliated Tumor Hospital of Xinjiang Medical University, Urumqi, Xinjiang, People's Republic of China
| | - Feng Bi
- West China Hospital of Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Jin Li
- Fudan University Shanghai Cancer Center, Shanghai, People's Republic of China
| | - Kang Wang
- Sichuan Provincial People's Hospital, Chengdu, Sichuan, People's Republic of China
| | - Jian-Ming Xu
- Chinese People's Liberation Army 307 Hospital, Beijing, People's Republic of China
| | - Qingxia Fan
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, People's Republic of China
| | - Wuyun Su
- Affiliated Hospital, Inner Mongolia Medical College, Hohhot, Inner Mongolia, People's Republic of China
| | - Lin Shen
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, Beijing, People's Republic of China
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Roviello G, Aprile G, D'Angelo A, Iannone LF, Roviello F, Polom K, Mini E, Catalano M. Human epidermal growth factor receptor 2 (HER2) in advanced gastric cancer: where do we stand? Gastric Cancer 2021; 24:765-779. [PMID: 33742317 DOI: 10.1007/s10120-021-01182-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 03/10/2021] [Indexed: 02/07/2023]
Abstract
Gastric cancer is one of the most common malignancy worldwide. In unresectable or metastatic disease, the prognosis is poor and in generally less than a year. HER2 expression remains an important biomarker to lead the addition of trastuzumab to first-line systemic chemotherapy in unresectable or metastatic gastroesophageal adenocarcinoma. To date, a major issue is represented by resistance to trastuzumab developed during treatment, considering the not improved outcomes in this molecular subtype of gastroesophageal adenocarcinoma to other HER2 target strategies. In this review, we summarize the available data on the mechanisms underlying primary and secondary resistance to HER2-targeted therapy and current challenges in the treatment of HER2-positive advanced gastric cancer refractory to trastuzumab. Furthermore, we describe the prognostic value of new non-invasive screening methods, under development novel agents (e.g., HER2 antibody-drug conjugates and bispecific antibodies) and strategies with antitumor activity in early studies.
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Affiliation(s)
- Giandomenico Roviello
- Department of Health Sciences, Section of Clinical Pharmacology and Oncology, University of Florence, Viale Pieraccini, 6, 50139, Florence, Italy.
| | - Giuseppe Aprile
- Department of Oncology, San Bortolo General Hospital, Vicenza, Italy
| | - Alberto D'Angelo
- Department of Biology and Biochemistry, University of Bath, Bath, BA2 7AY, UK
| | | | - Franco Roviello
- Department of Medical, Surgical and Neuro Sciences, Section of Surgery, Azienda Ospedaliera Universitaria Senese, University of Siena, Siena, Italy
| | - Karol Polom
- Department of Medical, Surgical and Neuro Sciences, Section of Surgery, Azienda Ospedaliera Universitaria Senese, University of Siena, Siena, Italy.,Department of Surgical Oncology, Gdansk Medical University, Gdansk, Poland
| | - Enrico Mini
- Department of Health Sciences, Section of Clinical Pharmacology and Oncology, University of Florence, Viale Pieraccini, 6, 50139, Florence, Italy
| | - Martina Catalano
- School of Human Health Sciences, University of Florence, Largo Brambilla 3, 50134, Florence, Italy
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Takahashi M, Sakamoto Y, Otsuka K, Kanbe M, Ohori H, Shindo Y, Honda H, Saijo K, Ouchi K, Murakawa Y, Takahashi H, Kawai S, Tanaka Y, Yamaguchi T, Shimodaira H, Yoshioka T, Ishioka C. Phase II Study of the Reuse of Trastuzumab with Docetaxel beyond Progression after First-Line Treatment in Second-Line Treatment for Unresectable, Metastatic Gastric Cancer (T-CORE1203). TOHOKU J EXP MED 2021; 254:49-55. [PMID: 34053967 DOI: 10.1620/tjem.254.49] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
Whether trastuzumab use beyond disease progression is beneficial in second-line treatment for patients with unresectable human epidermal growth factor receptor 2 (HER2)-positive gastric cancer remains to be elucidated. We conducted this phase II study to assess whether trastuzumab plus docetaxel was effective for patients with previously treated advanced HER2-positive gastric cancer. This trial was a single-arm, open-label, multicenter, phase II study, conducted by Tohoku Clinical Oncology Research and Education Society (T-CORE). Patients aged 20 years or older who had advanced HER2-positive gastric cancer and were refractory to trastuzumab, fluoropyrimidine, and cisplatin were enrolled. Patients were treated with 6 mg/kg trastuzumab and 60 mg/m2 docetaxel every 3 weeks. The primary endpoint was the overall response rate. The threshold overall response rate was estimated to be at 15%. Secondary endpoints were progression-free survival, 6-month survival rate, overall survival, and toxicities. A total of 27 patients were enrolled from 7 hospitals. The median age was 67 years. Partial response was seen in 3 patients among the 26 evaluated patients. The overall response rate was at 11.5% (90% confidence interval 1.2%-21.8%). The median progression-free survival was 3.2 months, the 6-month survival rate was 85%, and the median overall survival was 11.6 months. Febrile neutropenia was observed in 14.8%. The most frequently observed grade 3 non-hematologic toxicity was anorexia (14.8%). The primary endpoint was not achieved. The results support a current consensus that the continuation of trastuzumab in second-line therapy for gastric cancer is not a recommended option.
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Affiliation(s)
- Masanobu Takahashi
- Department of Medical Oncology, Tohoku University Hospital.,Department of Clinical Oncology, Institute of Development, Aging and Cancer, Tohoku University
| | | | | | - Mariko Kanbe
- Department of Internal Medicine, Senseki Hospital
| | - Hisatsugu Ohori
- Department of Clinical Oncology, Japanese Red Cross Ishinomaki Hospital
| | - Yoshiaki Shindo
- Department of Gastroenterological Surgery, Nakadori General Hospital
| | | | - Ken Saijo
- Department of Medical Oncology, Tohoku University Hospital.,Department of Clinical Oncology, Institute of Development, Aging and Cancer, Tohoku University
| | - Kota Ouchi
- Department of Medical Oncology, Osaki Citizen Hospital
| | | | | | | | - Yuichi Tanaka
- Department of Gastroenterological Surgery, Nakadori General Hospital
| | - Takuhiro Yamaguchi
- Division of Biostatistics, Tohoku University Graduate School of Medicine
| | - Hideki Shimodaira
- Department of Medical Oncology, Tohoku University Hospital.,Department of Clinical Oncology, Institute of Development, Aging and Cancer, Tohoku University
| | - Takashi Yoshioka
- Department of Clinical Oncology, Yamagata University School of Medicine
| | - Chikashi Ishioka
- Department of Medical Oncology, Tohoku University Hospital.,Department of Clinical Oncology, Institute of Development, Aging and Cancer, Tohoku University.,Department of Clinical Oncology, Tohoku University Graduate School of Medicine
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Palle J, Rochand A, Pernot S, Gallois C, Taïeb J, Zaanan A. Human Epidermal Growth Factor Receptor 2 (HER2) in Advanced Gastric Cancer: Current Knowledge and Future Perspectives. Drugs 2020; 80:401-415. [PMID: 32077003 DOI: 10.1007/s40265-020-01272-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The discovery of human epidermal growth factor receptor 2 (HER2) overexpression in 15-20% of gastric adenocarcinomas has been a key advance in the global care of this disease. Validated by the ToGA trial in the first-line setting of advanced HER2-positive (+) gastric cancer (GC), trastuzumab, an anti-HER2 monoclonal antibody (mAb), was the first therapeutic agent to significantly improve the prognosis of these patients. Since these results, many attempts have been made to improve the clinical outcomes of patients with HER2+ GC. However, all the other HER2-targeting molecules have failed to show a survival benefit in large phase III studies. The value of continuing trastuzumab after disease progression has been suggested by several retrospective studies. However, recent results of a randomized phase II trial showed no benefit from this strategy. On the other hand, novel therapeutic methods, such as immunotherapy, are emerging as new tools in the strategy of care of advanced GC, even if their benefit in the specific HER2+ population remains undetermined. Furthermore, substantial progress has been made in the understanding of the mechanisms leading to resistance to anti-HER2 therapies, and in the screening methods to detect them, thus opening new perspectives. The aim of this review was firstly to summarize the existing data on the specific strategy of care of HER2+ advanced GC, and secondly, to describe current knowledge regarding the potential mechanisms of resistance to HER2-targeting therapies. Lastly, we report the prospects for overcoming these potential obstacles, from future therapeutic strategies to new detection methods.
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Affiliation(s)
- Juliette Palle
- Department of Gastroenterology and Digestive Oncology, European Georges Pompidou Hospital, AP-HP, Paris Descartes University, 20 rue Leblanc, 75015, Paris, France
| | - Adrien Rochand
- Centre de Recherche des Cordeliers, INSERM, CNRS, Sorbonne Université, USPC, Université Paris Descartes, Université Paris Diderot, 75006, Paris, France
| | - Simon Pernot
- Department of Gastroenterology and Digestive Oncology, European Georges Pompidou Hospital, AP-HP, Paris Descartes University, 20 rue Leblanc, 75015, Paris, France
| | - Claire Gallois
- Department of Gastroenterology and Digestive Oncology, European Georges Pompidou Hospital, AP-HP, Paris Descartes University, 20 rue Leblanc, 75015, Paris, France
| | - Julien Taïeb
- Department of Gastroenterology and Digestive Oncology, European Georges Pompidou Hospital, AP-HP, Paris Descartes University, 20 rue Leblanc, 75015, Paris, France
| | - Aziz Zaanan
- Department of Gastroenterology and Digestive Oncology, European Georges Pompidou Hospital, AP-HP, Paris Descartes University, 20 rue Leblanc, 75015, Paris, France. .,Centre de Recherche des Cordeliers, INSERM, CNRS, Sorbonne Université, USPC, Université Paris Descartes, Université Paris Diderot, 75006, Paris, France.
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Review of Survival, Safety, and Clinical Outcomes in HER2+ Metastatic Gastric Cancer Following the Administration of Trastuzumab. Cancer Treat Res Commun 2020; 24:100189. [PMID: 32673845 DOI: 10.1016/j.ctarc.2020.100189] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/27/2020] [Accepted: 06/29/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND Therapies targeting human epidermal growth factor receptor 2 (HER2) have become a focus for improving treatment outcomes in patients with gastric cancer. This literature review sought to assesses clinical outcomes, including safety, survival, and treatment outcomes, of patients who received trastuzumab for the treatment of HER2+ metastatic gastric cancer. METHODS Searches were conducted in PubMed and Embase to identify observational research studies investigating the clinical outcomes of trastuzumab and combination therapies for the treatment of HER2+ metastatic gastric cancer, published January 1, 2014-August 22, 2019. Article screening was a two-phase process, and the results of each screening level were documented in accordance with PRISMA. RESULTS Twenty articles met the selection criteria for data extraction. Studies focused on treatment patterns or survival, safety, and clinical outcomes, as well as the natural history of disease. In the combined HER2+ patient populations included in this review, tumors were located in the stomach (33.7%), gastroesophageal junction (GEJ, 14.2%), unspecific GEJ or stomach (50.3%), or esophagus (1.9%). Studies observed increases in both overall survival and progression-free survival with the use of trastuzumab-based chemotherapy compared with chemotherapy treatment alone. Additionally, trastuzumab-based chemotherapy appeared to improve survival and clinical outcomes regardless of the presence of multi-organ metastases or tumor location. CONCLUSIONS Trastuzumab-treated patients have longer survival times than those not treated with trastuzumab and tolerate treatment well, with few serious adverse events. New treatments for second- and subsequent-line therapies would increase regimen options. MINI-ABSTRACT The treatment patterns and clinical outcomes observed in this literature review suggest patients treated with trastuzumab have longer survival times compared with chemotherapy treatment alone and tolerate treatment.
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ter Veer E, van den Ende T, Creemers A, de Waal L, van Oijen MG, van Laarhoven HW. Continuation of trastuzumab beyond progression in HER2-positive advanced esophagogastric cancer: a meta-analysis. Acta Oncol 2018; 57:1599-1604. [PMID: 30264641 DOI: 10.1080/0284186x.2018.1503421] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
INTRODUCTION After progression on first-line trastuzumab-based therapy, no HER2-targeted agent is available for patients with HER2-positive esophagogastric cancer. However, continuation of trastuzumab after progression is an established strategy in HER2-positive breast cancer. We conducted a meta-analysis to investigate whether continuation of trastuzumab beyond first-line therapy in combination with chemotherapy is more effective compared to chemotherapy-alone. METHODS PubMed, EMBASE, CENTRAL and meeting abstracts from ASCO and ESMO were searched up to June 2018 for studies (any design) investigating second-line trastuzumab plus chemotherapy compared to chemotherapy-alone for patients with HER2-positive esophagogastric cancer that progressed on first-line trastuzumab-based therapy. Meta-analysis was performed on the primary outcome, overall survival (OS), and on secondary outcomes progression-free survival (PFS), objective-response rate (ORR), and adverse events. RESULTS Four cohort studies and one randomized controlled trial (RCT) were included with n = 200 patients who received second-line trastuzumab plus chemotherapy and n = 183 who received chemotherapy-alone. Meta-analysis showed that trastuzumab plus chemotherapy did not prolonged OS [HR = 0.72, 95% confidence interval (95% CI) = 0.47-1.08, p=.11). PFS was longer with trastzumab plus chemotherapy compared to chemotherapy-alone (HR = 0.64, 95% CI = 0.45-0.91, p<.05). There was no significant difference in ORR between the trastuzumab plus chemotherapy-group and the chemotherapy-alone group (ORR = 19.1% versus ORR = 13.4%, p=.13) and no significant differences in grade 3/4 and grade 1/2 adverse events. CONCLUSIONS This meta-analysis showed that patients who progressed on first-line trastuzumab-based therapy but of whom trastuzumab was continued in second-line and added to chemotherapy did not show longer OS or a higher ORR compared to patients receiving second-line chemotherapy-alone. However, PFS was prolonged and trastuzumab was not associated with additional safety concerns. In absence of available second-line HER2-targeted agents, a large prospective RCT should investigate if continuation of trastuzumab might be an attractive strategy, as this meta-analysis was mostly based on non-randomized studies and a RCT with a small sample size.
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Affiliation(s)
- Emil ter Veer
- Cancer Center Amsterdam, Department of Medical Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Tom van den Ende
- Cancer Center Amsterdam, Department of Medical Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Aafke Creemers
- Cancer Center Amsterdam, Department of Medical Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Laura de Waal
- Cancer Center Amsterdam, Department of Medical Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Martijn G.H. van Oijen
- Cancer Center Amsterdam, Department of Medical Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Hanneke W.M. van Laarhoven
- Cancer Center Amsterdam, Department of Medical Oncology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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