AHR and neoplasm: Our nomograms support the latest AHR-stage classification proposed by O'sullivan et al. [34] and comply with the notion that T1–T2 and N0–N2 show significantly better OS, TTP, and SAP compared with ≥ T3 and ≥ N3 tumours, indicating that down-staging of N-classified OPSCCs is reasonable.