Investigating the Tumour Immune Response of Radiotherapy

"A pre-treatment diagnostic biopsy sample plus 1 mandatory biopsy (during/post-radiotherapy \[irradiated site\]) will be collected from each participant.~Matched blood samples will be collected from participants at baseline, during/post-radiotherapy, and if radiotherapy continues after the on-treatment biopsy is taken, an additional end of treatment blood sample will be collected."