OnCo

Pembrolizumab + platinum + fluorouracil

Checked 2026-09-09

Recurrent or metastatic head and neck squamous cell carcinoma, first line

One cycle

every 21 days
178141521Pembrolizumab: 200 mg, IntravenousPembrolizumabCisplatin 100 mg/m² or carboplatin AUC 5: day 1, IntravenousCisplatin 100 mg/m² or …Fluorouracil infusion: 1,000 mg/m² per day, IntravenousFluorouracil infusion
21-day cycle, chemotherapy 6; pembrolizumab up to 35Intravenous Continuous infusion

Components

DrugDoseRouteDays
Pembrolizumab
Monoclonal antibody (anti-PD-1)
200 mgIVD1
Cisplatin 100 mg/m² or carboplatin AUC 5
Cytotoxic chemotherapy (platinum)
day 1IVD1
Fluorouracil infusion
Fluoropyrimidine antimetabolite
1,000 mg/m² per dayIVD1-4 (96 h infusion)
Cycles
chemotherapy 6; pembrolizumab up to 35
21-day cycle
Emetogenicity
High (>90%)
G-CSF
Not routine

Notes

  • Pembrolizumab alone for CPS 1 or above (or 20 or above) when a chemotherapy-free start is preferred. EXTREME (cetuximab + platinum + 5-FU) is the older standard.

Used in

Source

KEYNOTE-048, Lancet 2019

Reference doses for a typical adult from the cited protocol or label. Doses are adjusted for renal and hepatic function, age, performance status and prior toxicity, and institutional protocols vary. Verify against the current label and your local protocol before treating. Not medical advice.

Other regimens for these cancers