Neoadjuvant PD-1 blockade combined with chemotherapy followed by concurrent immunoradiotherapy for locally advanced anal canal squamous carcinoma patients: Antitumor efficacy, safety and biomarker.
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: Neoadjuvant PD-1 blockade combined with chemotherapy followed by concurrent immunoradiotherapy for locally advanced anal canal squamous carcinoma patients: Antitumor efficacy, safety and biomarker. ### Output: 