BACKGROUND: Although randomized trials have shown a survival benefit of second-line chemotherapy (SLC) in metastatic gastric adenocarcinoma (MGA), no standard regimen has yet been established. Paclitaxel acts synergistically with capecitabine. In this phase II study, we evaluated the efficacy and safety of paclitaxel/capecitabine (PX) as an SLC regimen for patients with fluoropyrimidine-resistant MGA. MATERIALS AND METHODS: Patients were eligible if the tumor progressed to fluoropyrimidine-based regimens or relapsed within 6 months after completion of therapy with adjuvant fluoropyrimidines. Treatment consisted of paclitaxel (80 mg/m 2 , days 1 and 8) and capecitabine (1000 mg/m 2 , bid, days 1-14), called PX, every 3 weeks. The primary endpoint was the objective response rate (ORR). Thirty-five patients were required according to the statistical design, and PX combination would be rejected if fewer than five patients responded. RESULTS: From November 2004 to May 2007, 36 eligible patients were enrolled. Among them, 35 (97.2%) had previously received platinum/fluoropyrimidine as first-line therapy. Response was assessed in 35 patients; 10 partial responses were obtained, resulting in an ORR of 28.5%. The median progression-free survival was 5.0 months, and the median overall survival was 11.1 months. The most frequent grade 3/4 toxicity was neutropenia, observed in 11.1% of the patients. CONCLUSIONS: PX regimen was clearly demonstrated to be active and safe for fluoropyrimidine-platinum-resistant MGA, and further evaluation in future phase III trials is warranted.
BACKGROUND: Although randomized trials have shown a survival benefit of second-line chemotherapy (SLC) in metastatic gastric adenocarcinoma (MGA), no standard regimen has yet been established. Paclitaxel acts synergistically with capecitabine. In this phase II study, we evaluated the efficacy and safety of paclitaxel/capecitabine (PX) as an SLC regimen for patients with fluoropyrimidine-resistant MGA. MATERIALS AND METHODS:Patients were eligible if the tumor progressed to fluoropyrimidine-based regimens or relapsed within 6 months after completion of therapy with adjuvant fluoropyrimidines. Treatment consisted of paclitaxel (80 mg/m 2 , days 1 and 8) and capecitabine (1000 mg/m 2 , bid, days 1-14), called PX, every 3 weeks. The primary endpoint was the objective response rate (ORR). Thirty-five patients were required according to the statistical design, and PX combination would be rejected if fewer than five patients responded. RESULTS: From November 2004 to May 2007, 36 eligible patients were enrolled. Among them, 35 (97.2%) had previously received platinum/fluoropyrimidine as first-line therapy. Response was assessed in 35 patients; 10 partial responses were obtained, resulting in an ORR of 28.5%. The median progression-free survival was 5.0 months, and the median overall survival was 11.1 months. The most frequent grade 3/4 toxicity was neutropenia, observed in 11.1% of the patients. CONCLUSIONS:PX regimen was clearly demonstrated to be active and safe for fluoropyrimidine-platinum-resistant MGA, and further evaluation in future phase III trials is warranted.
Authors: Smita S Joshi; Daniel V T Catenacci; Theodore G Karrison; Jaclyn D Peterson; Mark M Zalupski; Amikar Sehdev; James Wade; Ahad Sadiq; Vincent J Picozzi; Andrea Amico; Robert Marsh; Mark F Kozloff; Blase N Polite; Hedy L Kindler; Manish R Sharma Journal: Clin Cancer Res Date: 2019-09-26 Impact factor: 12.531