Overall Survival Benefit With Lapatinib in Combination With Trastuzumab for Patients With Human Epidermal Growth Factor Receptor 2–Positive Metastatic Breast Cancer: Final Results From the EGF104900 Study

2012 ◽  
Vol 30 (21) ◽  
pp. 2585-2592 ◽  
Author(s):  
Kimberly L. Blackwell ◽  
Harold J. Burstein ◽  
Anna Maria Storniolo ◽  
Hope S. Rugo ◽  
George Sledge ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Overall Survival ◽  
Epidermal Growth Factor Receptor ◽  
Metastatic Breast Cancer ◽  
Growth Factor ◽  
Growth Factor Receptor ◽  
Metastatic Breast ◽  
Her2 Positive ◽  
Heavily Pretreated ◽  
Epidermal Growth

Purpose Phase III EGF104900 data demonstrated that lapatinib plus trastuzumab significantly improved progression-free survival (PFS) and clinical benefit rate versus lapatinib monotherapy, offering a chemotherapy-free option for patients with heavily pretreated human epidermal growth factor receptor 2 (HER2) –positive metastatic breast cancer (MBC). Final planned overall survival (OS) analysis from EGF104900 is reported here. Patients and Methods Patients with HER2-positive MBC whose disease progressed during prior trastuzumab-based therapies were randomly assigned to receive lapatinib monotherapy or lapatinib in combination with trastuzumab. OS and updated PFS data are presented using Kaplan-Meier curves and log-rank tests stratified for hormone receptor and visceral disease status. Subgroup analyses were conducted to identify characteristics of patients deriving the greatest clinical benefit. Results In this updated final analysis of all patients randomly assigned with strata (n = 291), lapatinib plus trastuzumab continued to show superiority to lapatinib monotherapy in PFS (hazard ratio [HR], 0.74; 95% CI, 0.58 to 0.94; P = .011) and offered significant OS benefit (HR, 0.74; 95% CI, 0.57 to 0.97; P = .026). Improvements in absolute OS rates were 10% at 6 months and 15% at 12 months in the combination arm compared with the monotherapy arm. Multiple baseline factors, including Eastern Cooperative Oncology Group performance status of 0, nonvisceral disease, < three metastatic sites, and less time from initial diagnosis until random assignment, were associated with improved OS. Incidence of adverse events was consistent with previously reported rates. Conclusion These data demonstrated a significant 4.5-month median OS advantage with the lapatinib and trastuzumab combination and support dual HER2 blockade in patients with heavily pretreated HER2-positive MBC.

Trastuzumab Emtansine in Human Epidermal Growth Factor Receptor 2–Positive Metastatic Breast Cancer: An Integrated Safety Analysis

2014 ◽  
Vol 32 (25) ◽  
pp. 2750-2757 ◽  
Author(s):  
Véronique Diéras ◽  
Nadia Harbeck ◽  
G. Thomas Budd ◽  
Joel K. Greenson ◽  
Alice E. Guardino ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Epidermal Growth Factor Receptor ◽  
Metastatic Breast Cancer ◽  
Growth Factor ◽  
Growth Factor Receptor ◽  
Metastatic Breast ◽  
Trastuzumab Emtansine ◽  
Her2 Positive ◽  
Epidermal Growth ◽  
Grade 3

Purpose The antibody–drug conjugate trastuzumab emtansine (T-DM1) combines the cytotoxic activity of DM1 with the human epidermal growth factor receptor 2 (HER2) –targeted, antitumor properties of trastuzumab. T-DM1 has shown activity in phase I and II single-arm studies in patients with pretreated HER2-positive metastatic breast cancer (MBC) and has demonstrated superior efficacy and improved tolerability versus standard MBC treatments in randomized phase II and III studies. This analysis, combining available data from all single-agent T-DM1 studies to date, was conducted to better define the T-DM1 safety profile. Patients and Methods Six studies in patients with HER2-positive MBC who received T-DM1 3.6 mg/kg every 3 weeks and follow-up data from patients in an extension study were analyzed. Analyses included adverse events (AEs) by grade; AEs leading to death, drug discontinuation, or dose reduction; and select AEs. Results Among 884 T-DM1–exposed patients, the most commonly reported all-grade AEs were fatigue (46.4%), nausea (43.0%), thrombocytopenia (32.2%), headache (29.4%), and constipation (26.5%). The most common grade 3 to 4 AEs were the laboratory abnormalities of thrombocytopenia (11.9%) and increased AST serum concentration (4.3%). These were manageable and not generally associated with clinical symptoms. There were 12 AE-related deaths. AEs resulted in dose reductions in 17.2% of patients and drug discontinuations in 7.0%. Conclusion In this analysis of 884 T-DM1–exposed patients, grade 3 or greater AEs were infrequent and typically asymptomatic and manageable. This favorable safety profile makes T-DM1 treatment suitable for exploration in other breast cancer settings.

Randomized Trial of Lapatinib Versus Placebo Added to Paclitaxel in the Treatment of Human Epidermal Growth Factor Receptor 2–Overexpressing Metastatic Breast Cancer

2013 ◽  
Vol 31 (16) ◽  
pp. 1947-1953 ◽  
Author(s):  
Zhongzhen Guan ◽  
Binghe Xu ◽  
Michelle L. DeSilvio ◽  
Zhenzhou Shen ◽  
Wichit Arpornwirat ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Epidermal Growth Factor Receptor ◽  
Metastatic Breast Cancer ◽  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Growth Factor Receptor ◽  
Metastatic Breast ◽  
Her2 Positive ◽  
Human Epidermal Growth Factor ◽  
Epidermal Growth

Purpose Lapatinib is an oral small-molecule tyrosine kinase inhibitor of both epidermal growth factor receptor and human epidermal growth factor receptor 2 (HER2). This study is designed to test whether the addition of lapatinib to paclitaxel improves overall survival (OS) compared with placebo plus paclitaxel in patients with HER2-overexpressing metastatic breast cancer (MBC). Patients and Methods This phase III, randomized, double-blind study assessed the efficacy and safety of lapatinib plus paclitaxel compared with placebo plus paclitaxel in patients with newly diagnosed HER2-positive MBC. The primary end point was OS. Secondary end points included progression-free survival (PFS), overall response rate (ORR), clinical benefit rate, and safety. Results The addition of lapatinib to paclitaxel significantly improved OS versus paclitaxel (treatment hazard ratio [HR], 0.74; 95% CI, 0.58 to 0.94; P = .0124); median OS was 27.8 versus 20.5 months, respectively. Median PFS was prolonged by 3.2 months, from 6.5 months with placebo plus paclitaxel to 9.7 months with lapatinib plus paclitaxel (HR, 0.52; 95% CI, 0.42 to 0.64; stratified log-rank P < .001). ORR was significantly higher with lapatinib plus paclitaxel compared with placebo plus paclitaxel (69% v 50%, respectively; P < .001). The incidence of grades 3 and 4 diarrhea and neutropenia was higher in the lapatinib plus paclitaxel arm. Only 4% of patients in this group reported febrile neutropenia. Cardiac events were low grade, asymptomatic, and mostly reversible. The incidence of hepatic events was similar in both arms. There were no fatal adverse events in the lapatinib plus paclitaxel arm. Conclusion This trial demonstrated that lapatinib combined with paclitaxel offers a significant and clinically meaningful survival advantage over paclitaxel alone in patients with HER2-positive MBC.

First-Line Trastuzumab Plus Epirubicin and Cyclophosphamide Therapy in Patients With Human Epidermal Growth Factor Receptor 2–Positive Metastatic Breast Cancer: Cardiac Safety and Efficacy Data From the Herceptin, Cyclophosphamide, and Epirubicin (HERCULES) Trial

2010 ◽  
Vol 28 (9) ◽  
pp. 1473-1480 ◽  
Author(s):  
Michael Untch ◽  
Michael Muscholl ◽  
Sergei Tjulandin ◽  
Walter Jonat ◽  
Hans-Gerd Meerpohl ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Epidermal Growth Factor Receptor ◽  
Metastatic Breast Cancer ◽  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Growth Factor Receptor ◽  
Metastatic Breast ◽  
First Line ◽  
Her2 Positive ◽  
Epidermal Growth

Purpose A high incidence of congestive heart failure (CHF) has been observed in patients with metastatic breast cancer (MBC) receiving doxorubicin-based chemotherapy and trastuzumab. The Herceptin, Cyclophosphamide, and Epirubicin (HERCULES) trial evaluated trastuzumab plus cyclophosphamide and the less cardiotoxic anthracycline epirubicin. Patients and Methods This prospective trial combined a phase I dose-finding stage with a phase II randomized stage. In total, 120 patients with human epidermal growth factor receptor 2 (HER2) –positive MBC and adequate cardiac function received first-line trastuzumab (4 mg/kg intravenous loading dose, then 2 mg/kg every week) plus cyclophosphamide (600 mg/m2) and either epirubicin 60 mg/m2 (HEC-60) or 90 mg/m2 (HEC-90) for six cycles, followed by trastuzumab monotherapy until progression. Sixty patients with HER2-negative disease received epirubicin (90 mg/m2) and cyclophosphamide (EC-90) alone. The primary end point was dose-limiting cardiotoxicity (DLC). Results Incidence of DLC was 5.0%, 1.7%, and 0% in the HEC-90, HEC-60, and EC-90 arms, respectively. All DLC events were manageable. There were no cardiac-related deaths. Other adverse-event profiles were comparable across the three arms, except febrile neutropenia, which was reported in 10% of the HEC-90 arm compared with 3% of the other arms. Tumor response rates were 57%, 60%, and 25% in the HEC-60, HEC-90, and EC-90 arms, respectively; median time to progression was 12.5, 10.1, and 7.6 months, respectively. Conclusion The HEC regimen is a promising treatment option for patients with HER2-positive MBC. The lower incidence of DLC with HEC, compared with the historic incidence associated with trastuzumab plus doxorubicin, supports further evaluation of the regimen, especially in adjuvant or neoadjuvant settings.

Phase III, Randomized Study of Dual Human Epidermal Growth Factor Receptor 2 (HER2) Blockade With Lapatinib Plus Trastuzumab in Combination With an Aromatase Inhibitor in Postmenopausal Women With HER2-Positive, Hormone Receptor–Positive Metastatic Breast Cancer: Updated Results of ALTERNATIVE

2021 ◽  
Vol 39 (1) ◽  
pp. 79-89 ◽  
Author(s):  
Stephen R. D. Johnston ◽  
Roberto Hegg ◽  
Seock-Ah Im ◽  
In Hae Park ◽  
Olga Burdaeva ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Epidermal Growth Factor Receptor ◽  
Metastatic Breast Cancer ◽  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Clinical Benefit ◽  
Growth Factor Receptor ◽  
Metastatic Breast ◽  
Her2 Positive ◽  
Epidermal Growth

PURPOSE Human epidermal growth factor receptor 2 (HER2) targeting plus endocrine therapy (ET) improved clinical benefit in HER2-positive, hormone receptor (HR)–positive metastatic breast cancer (MBC) versus ET alone. Dual HER2 blockade enhances clinical benefit versus single HER2 blockade. The ALTERNATIVE study evaluated the efficacy and safety of dual HER2 blockade plus aromatase inhibitor (AI) in postmenopausal women with HER2-positive/HR-positive MBC who received prior ET and prior neo(adjuvant)/first-line trastuzumab (TRAS) plus chemotherapy. This updated article reflects minor numerical corrections in some secondary efficacy analyses that resulted from programming errors and that do not change the major conclusions of the study. METHODS Patients were randomly assigned (1:1:1) to receive lapatinib (LAP) plus TRAS plus AI, TRAS plus AI, or LAP plus AI. Patients for whom chemotherapy was intended were excluded. The primary end point was progression-free survival (PFS; investigator assessed) with LAP plus TRAS plus AI versus TRAS plus AI. Secondary end points were PFS (comparison of other arms), overall survival (OS), overall response rate (ORR), clinical benefit rate (CBR), and safety. RESULTS Three hundred fifty-five patients were included in this analysis: LAP plus TRAS plus AI (n = 120), TRAS plus AI (n = 117), and LAP plus AI (n = 118). Baseline characteristics were balanced. The study met its primary end point; superior PFS was observed with LAP plus TRAS plus AI versus TRAS plus AI (median PFS, 11 v 5.6 months; hazard ratio, 0.62 [95% CI, 0.45 to 0.88]; P = .0063). A consistent PFS benefit was observed in predefined subgroups. ORR, CBR, and OS also favored LAP plus TRAS plus AI. The median PFS with LAP plus AI versus TRAS plus AI was 8.3 versus 5.6 months (hazard ratio, 0.85 [95% CI, 0.62 to 1.17]; P = .3159). Common adverse events (AEs; ≥ 15%) with LAP plus TRAS plus AI, TRAS plus AI, and LAP plus AI were diarrhea (69%, 9%, and 51%, respectively), rash (36%, 2%, and 28%, respectively), nausea (22%, 9%, and 22%, respectively), and paronychia (30%, 0%, and 15%, respectively), mostly grade 1 or 2. Serious AEs were reported similarly across the 3 groups, and AEs leading to discontinuation were lower with LAP plus TRAS plus AI. CONCLUSION Dual HER2 blockade with LAP plus TRAS plus AI showed superior PFS benefit versus TRAS plus AI in patients with HER2-positive/HR-positive MBC. This combination offers an effective and safe chemotherapy-sparing alternative treatment regimen for this patient population.

Sign in / Sign up

Export Citation Format

Share Document