© Oxford University Press 2006.
IN THIS ISSUE
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Surrogate Endpoint for Prostate Cancer Outcome
Clinical trials of new drugs could be speeded up if researchers could measure surrogate endpoints (e.g., biomarkers) that completely capture the true outcomes of interest (e.g., survival). Several statistical criteria have been developed that can be used to validate a candidate surrogate endpoint. In this issue, Petrylak et al. (p. 516) report a retrospective analysis of data on survival and serum prostate-specific antigen (PSA) levels from a clinical trial in men with metastatic androgen-independent prostate cancer, which showed that several specific changes in PSA level met these criteria. The optimal surrogate endpoint was a decline in serum PSA level of at
Functional Limitations in Elderly Cancer Survivors
Assessing Prostate Cancer Risk
Breast Implants and Cancer
Reproductive Factors, BRCA1/2, and Breast Cancer
Antitumor Activity of Novel PI3K Inhibitor