Lenvatinib (E7080/MK-7902) in Combination With Pembrolizumab (MK-3475) vs. Standard Chemotherapy and Lenvatinib Monotherapy in Participants With Recurrent/Metastatic Head and Neck Squamous Cell Carcinoma That Progressed After Platinum Therapy and Immunotherapy (MK-7902-009/E7080-G000-228/LEAP-009)

With Amendment 7, participants will discontinue lenvatinib and pembrolizumab and lenvatinib monotherapy, unless discussed with the Sponsor. A protocol-specified periodic safety review was completed with a data cut-off of 31-May-2024 (Primary Completion Date) and served as the final analysis of the primary outcome measure. Per protocol, 34 participants enrolled after the primary completion date and will be analyzed in the End of Trial analysis.