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Aim of this study is to compare the efficacy and safety of two different sequences of chemotherapeutic agents in order to optimize the treatment of patients with metastatic colorectal cancer progressed to a first line chemotherapy with FOLFIRI and bevacizumab. Primary endpoint will be overall survival, defined as the time elapsed from the date of randomization to the date of patient death due to any cause, or the last date the patient was known to be alive.
Secondary Objectives Progression free survival, Quality of life, Health resource utilisation and economic evaluation, Toxicity and incidence of adverse events
The study regimen includes:
Strategy A: FOLFOX-4 followed, after progression, by irinotecan/cetuximab Strategy B: irinotecan/cetuximab followed, after progression, by FOLFOX-4 Patients will be randomly assigned to one of the two treatment sequences (with 1:1 ratio) using a block design randomization procedure stratified according to center.
The patient accrual period is planned for approximately 36 months. To assess OS, all pts will be followed for up to 18 months after the last patient is randomised. The maximum estimated study duration is approximately 54 months.All statistical analyses will be based on an intention-to-treat approach. CONSORT rules will be applied to describe study flow and protocol deviations.
Patients with histologically confirmed metastatic colorectal cancer progressed after a first line treatment containing FOLFIRI and BEV
- Age >18 < 75 years of age
- Diagnosis of histologically proven adenocarcinoma of the colon or rectum, stage IV
- K-ras wild-type
- ECOG performance status 0-1 at study entry
- Response Rate, Disease control rate, The duration of overall response, Overall survival, PFS, Time to treatment failure, Quality of Life, Incidence of AEs, Frequency and nature of serious adverse reactions (SADRs), Premature withdrawals
Assuming a randomization ratio of 1:1, 282 deaths are required in order to achieve a power of 80% of detecting a hazard ratio of 0.72 in favour of one of the two sequences, translating in an increase of median survival time from 10 to 14 months, with a type I error of 5%, two-sided, using the Mantel-Cox version of the log-rank test. With a uniform accrual period of 3 years and a follow-up of 18 months, about 350 patients will be needed to reach the target number of events.
All statistical analyses will be based on an intention-to-treat approach. CONSORT rules will be applied to describe study flow and protocol deviations.
All OS and PFS curves will be drawn with the Kaplan-Meier method. Results will be presented as Hazard Ratio (HRs) and their 95% Confidence Interval (CIs).
On annual basis, starting from the second year, an interim analysis will be conducted. In principle, no formal stopping rule will be applied, unless otherwise suggested by the DSMC. Safety reports will be drawn on annual basis.
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
Metastatic Colorectal Cancer
Gruppo Italiano per lo studio dei Carcinomi dell'Apparato Digerente
Published on BioPortfolio: 2014-08-27T03:17:23-0400
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