Phase 2 Study of S-1 as 2nd Line Therapy in Advanced Non-Small Cell Lung Cancer
The purpose of this study is to determine whether S-1 is effective as 2nd line therapy in slowing tumor activity in patients with advanced non-small cell lung cancer. The study is also looking at the safety of S-1.
|Study Design:||Endpoint Classification: Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||An Open-Label, Non-Randomized, Multicenter, Three Stage, Phase 2 Study of S-1 as 2nd Line Therapy for Patients With Advanced Non-Small Cell Lung Cancer (Stage IIIB/Stage IV)|
- Overall tumor response rate (ORR - the proportion of patients with objective evidence of PR or CR) [ Time Frame: Each cycle will last 21 days (14 days treatment, 7 days recovery) until death or removal from study for any reason. Tumor assessmentswill be obtained at baseline and at the end of every even cycle ] [ Designated as safety issue: No ]
- To evaluate the duration of response (DR), and progression-free survival (PFS) [ Time Frame: Each cycle will last 21 days (14 days treatment, 7 days recovery) until death or removal from study for any reason. Pts will be followed for survival every 2 mos after PD for up to 12 mos from the date of enrollment of the last pt. ] [ Designated as safety issue: No ]
- To evaluate the safety profile of S-1 [ Time Frame: Each cycle will last 21 days (14 days treatment, 7 days recovery) until death/removal from study. AEs reported through f/up; blood/urine collected at baseline, Days 8&15, w/in 24 hrs of drug on Day 1 of each cycle after Cycle 1, at end of treatment. ] [ Designated as safety issue: Yes ]
- To investigate the relationship of S-1 plasma levels (components and metabolites) with safety and efficacy parameters [ Time Frame: Each cycle will last 21 days (14 days treatment, 7 days recovery) until death or removal from study for any reason. s Blood samples to be obtained 1.5 ± 0.5 h, 5 ± 1 h, 7 ± 1 h postdose on Day 1 of Cycle 1 only. ] [ Designated as safety issue: Yes ]
|Study Start Date:||February 2005|
|Study Completion Date:||November 2007|
|Primary Completion Date:||November 2007 (Final data collection date for primary outcome measure)|
All patients will receive S-1 orally at a dose of 30 mg/m2 twice daily (BID) for 14 days followed by a 1-week recovery period, repeated every 3 weeks.
All patients will receive S-1 orally at a dose of 30 mg/m2 twice daily (BID) for 14 days followed by a 1-week recovery period, repeated every 3 weeks. The study may go to the second stage only if the stage 2 criteria are met, where 3/30 (10%) or more patients must have achieved a confirmed response (CR or PR) in stage 1.The study may go to the third stage only if at least 8/50 patients (16%) must have achieved a confirmed response in stage 2
Advanced non-small cell lung cancer is relatively unresponsive to chemotherapy. This is true for the nucleoside analogue gemcitabine, with a response rate of approximately 10%, as well as for 5-fluorouracil (5-FU). Even when gemcitabine is combined with other chemotherapeutic drugs or biological agents, the overall tumor response rate remains basically unchanged. S-1 is a new generation oral fluoropyrimidine that combines Tegafur (5-fluoro-1-(tetrahydro-2-furanyl)-2,4(1H,3H)-pyrimidinedione [FT]), an oral prodrug of 5-FU, with two modulators, Gimeracil (5-chloro-2,4-dihydroxypyridine [CDHP]), which inhibits 5-FU degradation by dihydropyrimidine dehydrogenase (DPD) inhibition, and Oteracil potassium (Oxo), which inhibits 5-FU phosphorylation in the digestive tract. This combination of 3 compounds is designed to achieve enhanced antitumor activity while decreasing gastrointestinal toxicity.
This is an open-label, multicenter, single-arm, 3-stage, Phase 2 study evaluating the efficacy and safety of single agent S-1 as 2nd line therapy for patients with advanced NSCLC. The 3 stages of this study correspond to a futility stage (stage 1), a decision stage (stage 2), and a stage for improvement of precision of ORR (stage 3).
Please refer to this study by its ClinicalTrials.gov identifier: NCT00652561
|Study Director:||Fabio Benedetti, MD||Taiho Oncology, Inc.|