JimmyToowong Posted July 31, 2011 Share Posted July 31, 2011 J Clin Oncol. 2009 Jun 10;27(17):2766-71. Epub 2009 Apr 20. Progression-free survival as a predictor of overall survival in men with castrate-resistant prostate cancer. Halabi S, Vogelzang NJ, Ou SS, Owzar K, Archer L, Small EJ. Department of Biostatistics and Bioinformatics, Duke University Medical Center, 2424 Erwin Rd, Durham, NC 27705, USA. susan.halabi@duke.edu Comment in: * J Clin Oncol. 2009 Jun 10;27(17):2747-8. Abstract PURPOSE: To explore whether progression-free survival (PFS) or biochemical PFS can be used as a predictor of overall survival (OS) and to investigate the dependence between PFS and OS in men with castrate-resistant prostate cancer. PATIENTS AND METHODS: Data from nine Cancer and Leukemia Group B trials that enrolled 1,296 men from 1991 to 2004 were pooled. Men were eligible if they had prostate cancer that had progressed during androgen deprivation therapy and did not receive prior treatment with chemotherapy, immunotherapy, or other nonhormonal therapy. Landmark analyses of PFS at 3 and 6 months from randomization/registration were performed to minimize lead time bias. The proportional hazards model was used to assess the significance effect of PFS rate at 3 and at 6 months in predicting OS. In addition, biochemical progression using the definitions of Prostate-Specific Antigen Working Group (PSAW) Criteria PSAWG1 and PSAWG2 were analyzed as time-dependent covariates in predicting OS. RESULTS: The median survival time among men who experienced progression at 3 months was 9.2 months (95% CI, 8.0 to 10.0 months) compared with 17.8 months in men who did not experience progression at 3 months (95% CI, 16.2 to 20.4 months; P < .0001). Compared with men who did not progress at 3 and at 6 months, the adjusted hazard ratios for death were 2.0 (95% CI, 1.7 to 2.4; P < .001) and 1.9 (95% CI, 1.6 to 2.4; P < .001) for men who experienced progression at 3 and 6 months, respectively. In addition, biochemical progression at 3 months predicted OS. The association between PFS and OS was 0.30 (95% confidence limits = 0.26, 0.32). CONCLUSION: PFS at 3 and 6 months and biochemical progression at 3 months predict OS. These observations require prospective validation. [jm] [jm] PMID: 19380448 Forum: Castrate Resistant Prostate Cancer Title: Progression at 3 months predicts survival This extract can be found on http://PubMed.com, and is in the public domain. On PubMed.com there will be a link to the full paper (often $30, sometimes free). Any highlighting (except the title) is not by the author, but by Jim Marshall. Jim is not a doctor. This page was found on the Advanced Prostate Cancer Community for Australian men at http://advancedprost...lia.ipbhost.com. The link is hard to remember. An easier way to find it is to go to JimJimJimJim.com and click on Prostate. That's the word Jim four times, no spaces, followed by .com. If you need other help - to perhaps find someone to talk to or a local support group: Click on the Contact Jim button at http://JimJimJimJim.com. Link to comment Share on other sites More sharing options...
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