SURVEILLE-HPV: Evaluation of HPV16 Circulating DNA as Biomarker to Detect the Recurrence, in Order to Improve Post Therapeutic Surveillance of HPV16-driven Oropharyngeal Cancers

"Droplet based digital PCR (ddPCR) technology is a novel method for performing digital PCR. A sample is fractionated into 20,000 droplets, PCR amplification of the template molecules occurs in each individual droplet.~ddPCR allows to generate quantitative and accurate data without standard curves and also present higher sensitivity compared to conventional quantitative PCR (qPCR). Indeed, this method is based on the realization of millions of single-molecule PCRs in parallel in independent compartment (here droplets of an emulsion) and consequently avoids the bias seen in conventional PCR.~ddPCR offers an optimized approach for the sensitive detection and quantification of low-target-abundance biological samples.~DNA extraction will be planned on 1 mL of plasma, which will further increase the sensitivity of our technique initially based on only 200µL of DNA extracted plasma."