What are the side effects of immunotherapy
For informational purposes only
This answer was generated by AI grounded in NCCN guidelines and published medical literature. It is not medical advice. Always consult your oncologist or care team before making treatment decisions.
Side Effects of Immunotherapy for Lung Cancer
Immunotherapy is an important treatment option for lung cancer, but like all cancer treatments, it can cause side effects. Let me explain what you might experience.
How Immunotherapy Works and Why Side Effects Occur
According to the NCCN Guidelines for Patients: Metastatic Non-Small Cell Lung Cancer, immunotherapy uses your immune system to kill cancer cells. Specifically, immune checkpoint inhibitors (medications like PD-1 and PD-L1 inhibitors) work by "restoring the ability of immune T cells to kill lung cancer cells."
The challenge is that these medications can sometimes cause your immune cells to attack healthy cells in your body, which leads to what doctors call "immune-related side effects."
Common Immune-Related Side Effects
The NCCN Guidelines note that immune-related side effects can occur during treatment or even after treatment ends. The most frequently reported side effects include:
- Fatigue (lack of energy)
- Skin problems in various areas of your body
- Lung inflammation (called pneumonitis), which can cause shortness of breath or cough
- Digestive tract issues (nausea, diarrhea, or inflammation)
- Liver problems
- Heart inflammation (myocarditis)
Important Safety Considerations
According to the NCCN Guidelines, immunotherapy may not be safe for you if you:
- Have an autoimmune disease (where your immune system already attacks your own cells)
- Are taking medications that suppress your immune system
- Have had an organ transplant
- Have poor overall health status
What You Should Do
The NCCN Guidelines emphasize: "Tell your care team about any new or worsening symptoms you have." This is critical because some immune-related side effects need prompt medical attention.
Your oncology team can help manage these side effects and may adjust your treatment if needed. Always report symptoms like sudden shortness of breath, severe abdominal pain, or chest pain immediately.
Would you like to know more about managing specific side effects or how immunotherapy compares to other lung cancer treatments?
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Source Guidelines
NCCN Guidelines for Patients: Non-Small Cell Lung Cancer (2026)Browse all NCCN Guidelines for Patients →Related Services
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