Adjuvant Trastuzumab Emtansine Versus Paclitaxel Plus Trastuzumab for Stage I Human Epidermal Growth Factor Receptor 2-Positive Breast Cancer: 5-Year Results and Correlative Analyses From ATEMPT.
Paolo Tarantino, Nabihah Tayob, Guillermo Villacampa, Chau Dang, Denise A Yardley, Steven J Isakoff, Vicente Valero, Meredith Faggen, Therese Mulvey, Ron Bose, Douglas Weckstein, Antonio C Wolff, Katherine Reeder-Hayes, Hope S Rugo, Bhuvaneswari Ramaswamy, Dan Zuckerman, Lowell Hart, Vijayakrishna K Gadi, Michael Constantine, Kit Cheng, Audrey Merrill Garrett, P Kelly Marcom, Kathy Albain, Patricia DeFusco, Nadine Tung, Blair Ardman, Rita Nanda, Rachel C Jankowitz, Mothaffar Rimawi, Vandana Abramson, Paula R Pohlmann, Catherine Van Poznak, Andres Forero-Torres, Minetta C Liu, Kathryn J Ruddy, Adrienne G Waks, Michelle DeMeo, Harold J Burstein, Ann H Partridge, Patrizia Dell'Orto, Leila Russo, Emma Krause, Daniel J Newhouse, Busem Binboğa Kurt, Elizabeth A Mittendorf, Bryan Schneider, Aleix Prat, Eric P Winer, Ian E Krop, Sara M Tolaney
{"title":"Adjuvant Trastuzumab Emtansine Versus Paclitaxel Plus Trastuzumab for Stage I Human Epidermal Growth Factor Receptor 2-Positive Breast Cancer: 5-Year Results and Correlative Analyses From ATEMPT.","authors":"Paolo Tarantino, Nabihah Tayob, Guillermo Villacampa, Chau Dang, Denise A Yardley, Steven J Isakoff, Vicente Valero, Meredith Faggen, Therese Mulvey, Ron Bose, Douglas Weckstein, Antonio C Wolff, Katherine Reeder-Hayes, Hope S Rugo, Bhuvaneswari Ramaswamy, Dan Zuckerman, Lowell Hart, Vijayakrishna K Gadi, Michael Constantine, Kit Cheng, Audrey Merrill Garrett, P Kelly Marcom, Kathy Albain, Patricia DeFusco, Nadine Tung, Blair Ardman, Rita Nanda, Rachel C Jankowitz, Mothaffar Rimawi, Vandana Abramson, Paula R Pohlmann, Catherine Van Poznak, Andres Forero-Torres, Minetta C Liu, Kathryn J Ruddy, Adrienne G Waks, Michelle DeMeo, Harold J Burstein, Ann H Partridge, Patrizia Dell'Orto, Leila Russo, Emma Krause, Daniel J Newhouse, Busem Binboğa Kurt, Elizabeth A Mittendorf, Bryan Schneider, Aleix Prat, Eric P Winer, Ian E Krop, Sara M Tolaney","doi":"10.1200/JCO.23.02170","DOIUrl":null,"url":null,"abstract":"<p><strong>Purpose: </strong>Long-term outcomes of patients with stage I human epidermal growth factor receptor 2 (HER2)-positive breast cancer receiving adjuvant trastuzumab emtansine (T-DM1) remain undefined, and prognostic predictors represent an unmet need.</p><p><strong>Methods: </strong>In the ATEMPT phase II trial, patients with stage I centrally confirmed HER2-positive breast cancer were randomly assigned 3:1 to adjuvant T-DM1 for 1 year or paclitaxel plus trastuzumab (TH). Coprimary objectives were to compare the incidence of clinically relevant toxicities between arms and to evaluate invasive disease-free survival (iDFS) with T-DM1. Correlative analyses included the HER2DX genomic tool, multiomic evaluations of HER2 heterogeneity, and predictors of thrombocytopenia.</p><p><strong>Results: </strong>After a median follow-up of 5.8 years, 11 iDFS events were observed in the T-DM1 arm, consistent with a 5-year iDFS of 97.0% (95% CI, 95.2 to 98.7). At 5 years, the recurrence-free interval (RFI) was 98.3% (95% CI, 97.0 to 99.7), the overall survival was 97.8% (95% CI, 96.3 to 99.3), and the breast cancer-specific survival was 99.4% (95% CI, 98.6 to 100). Comparable iDFS was observed with T-DM1 irrespective of tumor size, hormone receptor status, centrally determined HER2 immunohistochemical score, and receipt of T-DM1 for more or less than 6 months. Although ATEMPT was not powered for this end point, the 5-year iDFS in the TH arm was 91.1%. Among patients with sufficient tissue for HER2DX testing (n = 187), 5-year outcomes significantly differed according to HER2DX risk score, with better RFI (98.1% <i>v</i> 81.8%, hazard ratio [HR], 0.10, <i>P</i> = .01) and iDFS (96.3% <i>v</i> 81.8%, HR, 0.20, <i>P</i> = .047) among patients with HER2DX low-risk versus high-risk tumors, respectively.</p><p><strong>Conclusion: </strong>Adjuvant T-DM1 for 1 year leads to outstanding long-term outcomes for patients with stage I HER2-positive breast cancer. A high HER2DX risk score predicted a higher risk of recurrence in ATEMPT.</p>","PeriodicalId":15384,"journal":{"name":"Journal of Clinical Oncology","volume":" ","pages":"3652-3665"},"PeriodicalIF":42.1000,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11527383/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Clinical Oncology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1200/JCO.23.02170","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/6/27 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"ONCOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Purpose: Long-term outcomes of patients with stage I human epidermal growth factor receptor 2 (HER2)-positive breast cancer receiving adjuvant trastuzumab emtansine (T-DM1) remain undefined, and prognostic predictors represent an unmet need.
Methods: In the ATEMPT phase II trial, patients with stage I centrally confirmed HER2-positive breast cancer were randomly assigned 3:1 to adjuvant T-DM1 for 1 year or paclitaxel plus trastuzumab (TH). Coprimary objectives were to compare the incidence of clinically relevant toxicities between arms and to evaluate invasive disease-free survival (iDFS) with T-DM1. Correlative analyses included the HER2DX genomic tool, multiomic evaluations of HER2 heterogeneity, and predictors of thrombocytopenia.
Results: After a median follow-up of 5.8 years, 11 iDFS events were observed in the T-DM1 arm, consistent with a 5-year iDFS of 97.0% (95% CI, 95.2 to 98.7). At 5 years, the recurrence-free interval (RFI) was 98.3% (95% CI, 97.0 to 99.7), the overall survival was 97.8% (95% CI, 96.3 to 99.3), and the breast cancer-specific survival was 99.4% (95% CI, 98.6 to 100). Comparable iDFS was observed with T-DM1 irrespective of tumor size, hormone receptor status, centrally determined HER2 immunohistochemical score, and receipt of T-DM1 for more or less than 6 months. Although ATEMPT was not powered for this end point, the 5-year iDFS in the TH arm was 91.1%. Among patients with sufficient tissue for HER2DX testing (n = 187), 5-year outcomes significantly differed according to HER2DX risk score, with better RFI (98.1% v 81.8%, hazard ratio [HR], 0.10, P = .01) and iDFS (96.3% v 81.8%, HR, 0.20, P = .047) among patients with HER2DX low-risk versus high-risk tumors, respectively.
Conclusion: Adjuvant T-DM1 for 1 year leads to outstanding long-term outcomes for patients with stage I HER2-positive breast cancer. A high HER2DX risk score predicted a higher risk of recurrence in ATEMPT.
期刊介绍：
The Journal of Clinical Oncology serves its readers as the single most credible, authoritative resource for disseminating significant clinical oncology research. In print and in electronic format, JCO strives to publish the highest quality articles dedicated to clinical research. Original Reports remain the focus of JCO, but this scientific communication is enhanced by appropriately selected Editorials, Commentaries, Reviews, and other work that relate to the care of patients with cancer.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
