{"entity":{"id":"hpv-deescalation-caution","kind":"pairing","name":"Caution: de-escalating radiation on HPV status alone","aka":[],"tldr":"Being HPV-positive is not enough to justify less radiation; trials that tried it saw more relapses.","summary":"This caution warns against reducing radiotherapy for HPV-positive, p16-positive head and neck cancer on the basis of HPV status alone. HPV-positive tumours are heterogeneous in smoking exposure, nodal burden and biology, so a single marker over-selects patients for less treatment. Multiple randomised trials bear this out: the 60 Gy arms of NRG-HN005, and the cetuximab-substitution trials RTOG 1016 and De-ESCALaTE, all underperformed standard cisplatin chemoradiation with modern external beam radiotherapy, with more relapses. The current approach is response-adapted selection, or selection guided by circulating tumour HPV DNA, rather than HPV status at diagnosis.","asOf":"2026-09-07","links":[{"label":"ClinicalTrials.gov NCT03952585: NRG-HN002 & NRG-HN005 (HPV+ de-escalation)","url":"https://clinicaltrials.gov/study/NCT03952585"}],"tags":[],"related":[],"cancers":["head-and-neck"],"sections":[],"technologies":["cthpv-dna"],"targets":[],"drugs":[],"companies":[],"institutions":[],"pathways":[],"terms":["hpv-p16"],"trials":["nrg-hn002-hn005"],"people":[],"bottlenecks":[],"keyPapers":[],"journals":[],"dependsOn":[],"notes":[],"a":"hpv-p16","b":"imrt-igrt","rationale":"HPV-positive tumours are heterogeneous in smoking exposure, nodal burden, and biology; a single marker over-selects.","evidence":"Multiple randomised trials.","pairingType":"caution"},"route":"/pairings/hpv-deescalation-caution/","neighbours":{"cancer":[{"id":"head-and-neck","kind":"cancer","name":"Head and neck squamous cell carcinoma","route":"/cancers/head-and-neck/"},{"id":"hpv-positive-oropharyngeal-cancer","kind":"cancer","name":"HPV-positive oropharyngeal cancer","route":"/cancers/hpv-positive-oropharyngeal-cancer/"}],"technology":[{"id":"cthpv-dna","kind":"technology","name":"Circulating tumour HPV DNA (ctHPV-DNA)","route":"/technologies/cthpv-dna/"},{"id":"imrt-igrt","kind":"technology","name":"IMRT / IGRT (modern external beam)","route":"/technologies/imrt-igrt/"}],"term":[{"id":"hpv-p16","kind":"term","name":"HPV-positive (p16) head and neck cancer","route":"/terms/hpv-p16/"}],"trial":[{"id":"nrg-hn002-hn005","kind":"trial","name":"NRG-HN002 & NRG-HN005 (HPV+ de-escalation)","route":"/trials/nrg-hn002-hn005/"}]}}