AK112 Plus AP Regimen for Operable Locally Advanced Head and Neck Squamous Cell Carcinoma

"1. The patients are given AK112 combined with AP regimen every 3 weeks for 3 cycles before operation.~2. After the neoadjuvant therapy ,the patients will be assessed and be commanded surgery.~3.4-6 weeks after the surgery, the patients will be given chemoradiotherapy or radiotherapy alone decided on the conditon after surgery.~4.The participants will receive AK112 for 14 cycles after surgery."