Abstract | PURPOSE: METHODS: A meta-analysis was conducted using data from five of the six adjuvant trastuzumab trials. Efficacy end points were disease-free survival (DFS) and overall survival (OS). Separate analyses were prospectively planned for hormone receptor (HR) -positive and HR-negative cohorts. Random effect models and Yusuf-Peto fixed effects models assessed the impact of heterogeneity on baseline hazards and treatment effects across studies. Peto-Pike cumulative incidence estimates were stratified by study and nodal status. RESULTS: Median follow-up time was 8 years. For 2,263 patients with HR-positive disease, 8-year cumulative incidence rates comparing trastuzumab versus no trastuzumab were 17.3% versus 24.3% (P < .001) for DFS and 7.8% versus 11.6% (P = .005) for OS, respectively; for 1,092 HR-positive patients with zero or one positive lymph nodes, results were 12.7% versus 19.4% (P = .005) for DFS and 5.3% versus 7.4% (P = .12) for OS, respectively. For 1,957 patients with HR-negative disease, 8-year cumulative incidence rates were 24.0% versus 33.4% (P < .001) for DFS and 12.4% versus 21.2% (P < .001) for OS, respectively; for 1,040 HR-negative patients with zero or one positive lymph nodes, results were 20.4% versus 26.3% (P = .05) for DFS and 8.2% versus 12.2% (P = .084) for OS, respectively. CONCLUSION: Women with HER2-positive tumors ≤ 2 cm in the randomized trastuzumab trials derived substantial DFS and OS benefit from adjuvant trastuzumab. Trastuzumab-treated patients with HR-positive disease and ≤ one positive lymph node may be candidates for trials assessing less aggressive treatment approaches.
|
Authors | Ciara C O'Sullivan, Ian Bradbury, Christine Campbell, Marc Spielmann, Edith A Perez, Heikki Joensuu, Joseph P Costantino, Suzette Delaloge, Priya Rastogi, Dimitrios Zardavas, Karla V Ballman, Eileen Holmes, Evandro de Azambuja, Martine Piccart-Gebhart, Jo Anne Zujewski, Richard D Gelber |
Journal | Journal of clinical oncology : official journal of the American Society of Clinical Oncology
(J Clin Oncol)
Vol. 33
Issue 24
Pg. 2600-8
(Aug 20 2015)
ISSN: 1527-7755 [Electronic] United States |
PMID | 26101239
(Publication Type: Journal Article, Meta-Analysis)
|
Copyright | © 2015 by American Society of Clinical Oncology. |
Chemical References |
- Antibodies, Monoclonal, Humanized
- Antineoplastic Agents
- ERBB2 protein, human
- Receptor, ErbB-2
- Trastuzumab
|
Topics |
- Antibodies, Monoclonal, Humanized
(therapeutic use)
- Antineoplastic Agents
(therapeutic use)
- Breast Neoplasms
(drug therapy, enzymology)
- Chemotherapy, Adjuvant
- Disease-Free Survival
- Female
- Humans
- Randomized Controlled Trials as Topic
- Receptor, ErbB-2
(biosynthesis)
- Trastuzumab
|