Figure S3 from Liquid Biopsies with Circulating Plasma HPV–DNA Measurements—A Clinically Applicable Surveillance Tool for Patients with HPV-Positive Oropharyngeal Cancer

Figure S3: Copies of HPV DNA per ml plasma in follow-up samples for patients with residual disease. A black dot denotes a cell-free HPV-DNA negative plasma sample, while a red dot denotes a cell-free HPV-DNA positive plasma sample measured by ddPCR. Missing samples are marked in grey. Size and placement of yellow rectangles and yellow lines indicates time and type of treatment. A red line indicates the date of the recurrence. RT: radiotherapy; OP: Operation; Re-OP: Re-resection and re-operation.