Transcriptome profiling of cell-free RNAs in prostate cancer patients on active surveillance
Foster, J. G.; Wozniak, E.; Mein, C. A.; Thompson, J.; Stricker, P.; Haynes, A.-M.; Rajan, P.
Show abstract
Active surveillance (AS) delays or avoids unnecessary treatment-related side effects for early localised non-aggressive prostate cancer (PCa) through monitoring with regular prostate-specific antigen (PSA) testing, digital rectal examination (DRE), magnetic resonance imaging (MRI) and prostate biopsy. Whilst baseline MRI has prognostic value and is increasingly used for disease monitoring, molecular biomarkers could be an adjunct to refine risk stratification and disease prognostication [2]. Unlike tissue-based genomic classifiers such as Decipher (Veracyte) and Prolaris CCP (Myriad), blood-based molecular testing for example cell-free RNA (cfRNA) offers minimally invasive real-time monitoring. Moreover, cfRNA may yield genetic information shed from different cell populations within the tumour microenvironment, as well as the host circulation, expanding the opportunities for biomarker discovery. Here, we test the feasibility of whole transcriptome profiling of cfRNAs from the blood of PCa patients under AS, exploring differences between patients with stable disease (SD), and progression to radical prostatectomy (RP).
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