Suresh S Ramalingam1, Maurice Pérol2, Martin Reck3, Ruben Dario Kowalyszyn4, Oliver Gautschi5, Martin Kimmich6, Eun Kyung Cho7, Grzegorz Czyzewicz8, Alexandru Grigorescu9, Nina Karaseva10, Shaker Dakhil11, Pablo Lee12, Annamaria Zimmerman12, Andreas Sashegyi12, Ekaterine Alexandris12, Gebra Cuyun Carter12, Katherine B Winfree12, Edward B Garon13. 1. Emory University School of Medicine, Winship Cancer Institute of Emory University, Clifton Campus, Atlanta, GA. Electronic address: ssramal@emory.edu. 2. Department of Medical Oncology, Léon Bérard Cancer Center, Lyon, France. 3. LungenClinic Grosshansdorf, Airway Research Center North, German Center for Lung Research, Wöhrendamm, Grosshansdorf, Germany. 4. Centro de Investigaciones Clínicas, Instituto Multidisciplinario de Oncología, Clínica Viedma, Río Negro, Argentina. 5. Luzemer Kantonsspital, Luzern, Switzerland. 6. Klinik Schillerhöhe, Gerlingen, Germany. 7. Hematology-Oncology Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, South Korea. 8. Department of Chemotherapy, John Paul II Hospital, Krakow, Poland. 9. Department of Medical Oncology, Institute of Oncology, Bucharest, Romania. 10. City Clinical Oncology Dispensary, St Petersburg, Russian Federation. 11. Cancer Center of Kansas, Wichita, KS. 12. Eli Lilly and Company, Indianapolis, IN. 13. David Geffen School of Medicine at UCLA/TRIO-US Network, Los Angeles, CA.
Abstract
INTRODUCTION: Ramucirumab, a recombinant human immunoglobulin G1 monoclonal antibody receptor antagonist designed to block the ligand-binding site of vascular endothelial growth factor receptor-2 (VEGFR-2), was evaluated as second-line treatment in combination with docetaxel in patients with non-small-cell lung cancer in the REVEL trial (NCT01168973). Ramucirumab significantly improved overall survival (OS) and progression-free survival (PFS). We report age subgroup analysis results primarily on the basis of a 65-year cutoff. PATIENTS AND METHODS: Patients were randomized 1:1 to ramucirumab with docetaxel or placebo with docetaxel (n = 1253). Of these, 798 were younger than 65 years (ramucirumab, n = 391; control, n = 407) and455 were 65 years or older (ramucirumab, n = 237; control, n = 218). Treatment comprised 21-day cycles of 75 mg/m2 docetaxel with 10 mg/kg ramucirumab or placebo. Prespecified age subgroup analyses were performed, including OS, PFS, and objective response rate. Quintiles age analysis was conducted to establish a relationship between efficacy and age. The Lung Cancer Symptom Scale (LCSS) measured quality of life outcomes. Safety was assessed according to adverse events (AEs). RESULTS: Patients younger than 65 years showed favorable OS outcomes with ramucirumab treatment (hazard ratio [HR], 0.74; 95% confidence interval [CI], 0.62-0.87; P < .001) and PFS (HR, 0.68; 95% CI, 0.59-0.79; P < .001). In patients 65 years or older, benefits of ramucirumab were not as evident; after model adjustment for prognostic factors, OS and PFS HRs were 0.96 (95% CI, 0.77-1.21; P = .04) and 0.87 (95% CI, 0.71-1.05; P = .03), respectively. Age analysis according to quintiles showed HRs favoring ramucirumab for all age groupings. LCSS scores and AEs did not considerably differ between age groups. CONCLUSION: In this subgroup analysis, true treatment effect differences on the basis of age have not been established, and treatment should not be deterred solely because of age.
RCT Entities:
INTRODUCTION:Ramucirumab, a recombinant human immunoglobulin G1 monoclonal antibody receptor antagonist designed to block the ligand-binding site of vascular endothelial growth factor receptor-2 (VEGFR-2), was evaluated as second-line treatment in combination with docetaxel in patients with non-small-cell lung cancer in the REVEL trial (NCT01168973). Ramucirumab significantly improved overall survival (OS) and progression-free survival (PFS). We report age subgroup analysis results primarily on the basis of a 65-year cutoff. PATIENTS AND METHODS: Patients were randomized 1:1 to ramucirumab with docetaxel or placebo with docetaxel (n = 1253). Of these, 798 were younger than 65 years (ramucirumab, n = 391; control, n = 407) and 455 were 65 years or older (ramucirumab, n = 237; control, n = 218). Treatment comprised 21-day cycles of 75 mg/m2 docetaxel with 10 mg/kg ramucirumab or placebo. Prespecified age subgroup analyses were performed, including OS, PFS, and objective response rate. Quintiles age analysis was conducted to establish a relationship between efficacy and age. The Lung Cancer Symptom Scale (LCSS) measured quality of life outcomes. Safety was assessed according to adverse events (AEs). RESULTS:Patients younger than 65 years showed favorable OS outcomes with ramucirumab treatment (hazard ratio [HR], 0.74; 95% confidence interval [CI], 0.62-0.87; P < .001) and PFS (HR, 0.68; 95% CI, 0.59-0.79; P < .001). In patients 65 years or older, benefits of ramucirumab were not as evident; after model adjustment for prognostic factors, OS and PFS HRs were 0.96 (95% CI, 0.77-1.21; P = .04) and 0.87 (95% CI, 0.71-1.05; P = .03), respectively. Age analysis according to quintiles showed HRs favoring ramucirumab for all age groupings. LCSS scores and AEs did not considerably differ between age groups. CONCLUSION: In this subgroup analysis, true treatment effect differences on the basis of age have not been established, and treatment should not be deterred solely because of age.