This is a phase 3 open-label, randomized, controlled, multicenter study to compare petosemtamab vs investigator's choice monotherapy in HNSCC patients for the second- and third-line treatment of incurable metastatic/recurrent disease.
Signed ICF before initiation of any study procedures.
Age ≥ 18 years at signing of ICF.
Histologically previously confirmed HNSCC with evidence of metastatic or locally advanced disease not amenable to standard therapy with curative intent.
HNSCC participants progressed on or after anti-PD-1 therapy and platinum-containing therapy.
Central nervous system metastases that are untreated or symptomatic, or require radiation, surgery, or continued steroid therapy to control symptoms within 14 days prior to randomization.
Known leptomeningeal involvement
Any systemic anticancer therapy within 4 weeks prior to randomization.
Major surgery within 3 weeks or palliative radiotherapy within 2 weeks prior to randomization.
Merus B.V.
Lead sponsor