Summary
This study is designed to assess the safety and efficacy of lenvatinib in combination
with pembrolizumab versus standard of care (SOC) chemotherapy, and to also assess the
safety and efficacy of lenvatinib monotherapy in participants with recurrent/metastatic
head and neck squamous cell carcinoma (R/M HNSCC) that have progressed after platinum
therapy and a programmed cell death protein 1 (PD-1) or anti-programmed death ligand 1
(PD-L1) inhibitor. The primary hypothesis is that lenvatinib + pembrolizumab is superior
to SOC chemotherapy with respect to ORR per modified Response Evaluation Criteria in
Solid Tumors (RECIST) 1.1 as assessed by blinded independent central review.