Alimta® Versus Its Combination With Carboplatin in Advanced Non-small-cell Lung Cancer in Patients Performance Status 2

Summary

Optimal management of patients with advanced NSCLC and with PS 2 remains controversial and underrepresented in clinical trials, typically accounting for 5 to 10% of enrolled patients. Patient PS 2 proportion in population-based studies is considerably higher than that included in clinical trials. Management of patients with PS of 2 in clinical practice is empirical and inconsistent. Patients have median overall survival of 3 to 5 months in randomized trials, and treatment options include best supportive care, single-agent and combination chemotherapy. Retrospective studies have suggested that patients PS 2 may benefit from first-line chemotherapy in terms of symptom improvement and overall survival. In many of these studies, single-agent chemotherapy was compared with best supportive care alone. Data on the role of cisplatin-based combinations for patients with PS 2 is more scant, with one study questioning its benefit, and another interrupting accrual because of undue toxicity. With regards to carboplatin, the Cancer and Leukemia Group B (CALGB) study 9730 compared paclitaxel plus carboplatin versus paclitaxel alone in a subgroup of 107 patients with PS 2; the median overall survival was significantly longer in group treated with combination chemotherapy (4.7 versus 2.4 months). Combination chemotherapy with carboplatin and paclitaxel also produced a statistically significantly higher incidence of severe hematological and non-hematological toxicities. On the basis of aforementioned results, a recent European panel stated that carboplatin-based or low-dose cisplatin-based doublets might represent alternative options to single-agent chemoterapy in patients PS 2. Outside clinical trials, single-agent chemotherapy with a 3rd generation agent remains valid option for patients PS2. Results demonstrate that pemetrexed is an agent with established single-agent activity in NSCLC, and suggest it is a potential candidate for combinations with platinum and other agents currently utilized for patients with advanced NSCLC. Favorable toxicity profile of pemetrexed suggests that this agent is an ideal candidate for single agent testing and in combination among patients with PS 2. Substantial doubt remains in the comparative benefit from monotherapy versus combination. Starting dose and schedule of pemetrexed were set for this study based on its current labeling in the 2nd line treatment of metastatic NSCLC and 1st line treatment of malignant pleural mesothelioma.

Timeline

Start

2008-04

Primary completion

2012-01

Completion

2012-12

Publications

• Gijtenbeek RG, de Jong K, Venmans BJ, van Vollenhoven FH, Ten Brinke A, Van der Wekken AJ, van Geffen WH. Best first-line therapy for people with advanced non-small cell lung cancer, performance status 2 without a targetable mutation or with an unknown mutation status. Cochrane Database Syst Rev. 2023 Jul 7;7(7):CD013382. doi: 10.1002/14651858.CD013382.pub2.
• Zukin M, Barrios CH, Pereira JR, Ribeiro Rde A, Beato CA, do Nascimento YN, Murad A, Franke FA, Precivale M, Araujo LH, Baldotto CS, Vieira FM, Small IA, Ferreira CG, Lilenbaum RC. Randomized phase III trial of single-agent pemetrexed versus carboplatin and pemetrexed in patients with advanced non-small-cell lung cancer and Eastern Cooperative Oncology Group performance status of 2. J Clin Oncol. 2013 Aug 10;31(23):2849-53. doi: 10.1200/JCO.2012.48.1911. Epub 2013 Jun 17.

Drugs

Indications