Transcript-based model as a prognostic biomarker. natural alternatives to viagra uk The researchers identified a six-gene signature identifying a low-risk group with a median survival of more than 34. buy viagra online usa 9 months and a high-risk group with a median survival of 7. viagra cost 8 months, which was confirmed in an independent set of cardinal patients. buy viagra without prescription David olmos, md, from the royal marsden national health service foundation trust in sutton, uk, and colleagues analyzed blood mrna expression arrays to identify the prognostic outcome for patients with metastatic castration-resistant prostate cancer. buy viagra Based on latent process decomposition (lpd) analyses of mrna expression data, the researchers divided the evaluable patients into four groups. viagra for sale The lpd1 subgroup correlated with the worse prognosis and poorer overall survival compared with other lpd subgroups (10. much viagra 100mg 7 vs. viagra pills 25. 6 months). A nine-gene signature classified patients into this subgroup with a low percentage of misclassification. The prognostic utility of this signature was confirmed in a validation cohort and lpd1 remained an independent prognostic factor correlating with worse overall survival. "[these results] suggest that transcript levels of a few selected genes in blood samples from patients with castration-resistant prostate cancer can improve outcome prediction significantly," writes the author of an accompanying editorial. Several authors from the ross study disclosed financial ties to source mdx, which funded the study. viagra sms jokes The olmos study was partially funded by astrazeneca. natural alternatives to viagra uk Abstract - ross full text (subscription or payment may be required) abstract - olmos full text (subscription or payment may be required) editorial (subscription or payment may be required)   related resources news similar drugs updated drugs pharmacology notes alerts charts endorectal mri can aid with prostate cancer treatment plan october 01, 2012 endorectal magnetic resonance imaging (mri) can help to predict upgrading on confirmatory biopsy and to identify which prostate cancer patients may benefit from active surveillance. Snps linked to erectile dysfunction after radiotherapy october 01, 2012 twelve single nucleotide polymorphisms (snps) are associated with development of erectile dysfunction (ed) following radiotherapy for prostate cancer. viagra 48 hours Surveillance for low-risk prostate cancer examined september 25, 2012 for men with low-risk prostate cancer, projections show that active surv.