Fig. 1

Study workflow describing the processing of the OPSCC cases and subsequent analysis of the investigational product (Leica Biosystems p16 antibody) and its comparator (Roche Tissue Diagnostics p16 antibody). LBS-NCL: Leica Biosystems-Newcastle, NUTH RVI: Newcastle Hospitals NHS Foundation Trust Royal Victoria Infirmary, OPSCC: Oropharyngeal squamous cell carcinoma