This study is for people with a type of head and neck cancer called **Head & Neck Squamous Cell Carcinoma (HNSCC)**. It is a non-interventional study, which means no new treatments will be given. Instead, researchers will collect tissue and blood samples while you receive your regular treatment. A biomarker is a substance that can be measured to learn about your disease. This study tracks these biomarkers over time to understand the cancer better.
To join, you must be 18 or older, consent to participate, and have a type of HNSCC that cannot be treated with surgery. You should be starting a certain kind of cancer medicine. People with other types of cancer or certain health issues might not be able to join.
- **Participation involves providing tissue and blood samples.**
- **The study does not involve new treatments or medicines.**
- **There is no specific compensation mentioned for participating.**