Abstract

In this issue of Lung Cancer, two groups report results of phase II clinical trials in malignant mesothelioma, highlighting some of the problems faced by clinical trialists in 2005. Our aims in developing new cancer treatments are to prolong survival and improve symptoms or quality of life as safely and cost-effectively as possible. However, phase II studies cannot tell us if we are achieving these aims. Phase II studies are used to establish anti-tumour efficacy before phase III testing, using surrogate endpoints for patient benefit, most commonly objective response; herein lies the problem.

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