This study looks at how radiotherapy (a treatment using high-energy rays to kill cancer cells) affects the immune system of patients with malignant tumors (cancerous growths). Specifically, it examines changes in certain blood cells: myeloid-derived suppressor cells (MDSCs), T cells, and extramedullary erythroid precursor cells. These cells are important for your body’s defense against illnesses. Researchers want to know if there’s a link between these changes and how well radiotherapy works in treating cancer. This could help create better treatment plans in the future.

• Time Commitment: Participants need to be available for blood tests and medical visits as required.
• Eligibility: Participants must be 18+, diagnosed with certain cancers, and need radiotherapy.
• Risks: Participants should not have serious other diseases, mental illness, or substance abuse issues.

If you meet the criteria and want to help, this study might be a good fit for you. Participation helps improve future cancer treatments.