Adverse biology in head-and-neck SCC: HPV-negative oropharyngeal disease, p16-negative, s...
Deterministic view of the source YAML entity. Clinical authority remains with the cited source IDs and reviewer sign-off state.
| ID | RF-HNSCC-HIGH-RISK-BIOLOGY |
|---|---|
| Type | Red flag |
| Status | reviewed 2026-04-26 | pending_clinical_signoff |
| Diseases | DIS-HNSCC |
| Sources | SRC-NCCN-NSCLC-2025 SRC-ONCOKB |
Red Flag Origin
| Definition | Adverse biology in head-and-neck SCC: HPV-negative oropharyngeal disease, p16-negative, smoking >10 pack-years with HPV+ disease (intermediate-risk), extranodal extension, positive surgical margins, or PD-L1 CPS ≥20 in metastatic context — each shifts adjuvant intensification (chemo-RT vs RT alone) or 1L choice (pembrolizumab mono vs pembrolizumab + chemo). |
|---|---|
| Clinical direction | intensify |
| Category | high-risk-biology |
Trigger Logic
{
"any_of": [
{
"all_of": [
{
"finding": "primary_site",
"value": "oropharynx"
},
{
"finding": "hpv_p16_status",
"value": "negative"
}
]
},
{
"finding": "extranodal_extension",
"value": true
},
{
"finding": "positive_surgical_margins",
"value": true
},
{
"all_of": [
{
"finding": "metastatic_disease",
"value": true
},
{
"comparator": ">=",
"finding": "pdl1_cps",
"threshold": 20
}
]
},
{
"all_of": [
{
"finding": "hpv_p16_status",
"value": "positive"
},
{
"comparator": ">",
"finding": "smoking_pack_years",
"threshold": 10
}
]
}
],
"type": "biomarker"
}
Notes
HPV / p16 status is the dominant prognostic biomarker in oropharyngeal SCC: HPV+ have 5-yr OS ~80% vs 50% HPV-negative. RTOG-0129 stratified HPV+ smokers (>10 pack-years) as intermediate-risk — current trials (NRG-HN005) test de-escalation only in HPV+ low-smoker patients. Extranodal extension or positive margins post-resection: indication for cisplatin + RT adjuvant (RTOG 9501, EORTC 22931 — OS benefit only in this high-risk subset). Metastatic / R/M HNSCC: PD-L1 CPS ≥20 → pembrolizumab monotherapy (KEYNOTE-048, OS 14.9 vs 10.7 mo); CPS 1–19 → pembrolizumab + 5-FU + platinum; CPS <1 → EXTREME (cetuximab + cis + 5-FU).
Used By
No reverse references found in the YAML corpus.