The FOCUS4 trial is an adaptive, molecularly stratified trial which aims to improve the efficiency with which new novel agents can be tested in the colorectal cancer setting. A patient information DVD was produced to explain this complex trial and you can select from the chapters listed below to view patient information video by topic.

1.  Introduction
2.  The Process
3.  Randomisation
4.  Molecular trials
5.  FOCUS4-N
6.  Optional Research Tests
7.  Summary

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