Efficacy of first-line (1L) pembrolizumab by PD-L1 combined positive score &#60;1, 1-19, and &#8805;20 in recurrent and/or metastatic (R/M) head and neck squamous cell carcinoma (HNSCC): KEYNOTE-048 subgroup analysis
Pembrolizumab
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: Identify all the mentioned drugs in the given text. Text may or may not contain drug. If they contain more than 1 drug, use ";" as delimiter and join them. ### Input: Efficacy of first-line (1L) pembrolizumab by PD-L1 combined positive score &#60;1, 1-19, and &#8805;20 in recurrent and/or metastatic (R/M) head and neck squamous cell carcinoma (HNSCC): KEYNOTE-048 subgroup analysis ### Output: Pembrolizumab