Immune Responses in Prostate, Lung, Melanoma and Breast Cancer Patients Following Stereotactic Body Radiotherapy (SBRT), Intensity Modulated Radiotherapy (IMRT) or Brachytherapy


About this study

Success of cancer immunotherapy is limited by the ability of solid tumors to evade local and systemic antitumoral immune responses. Several mechanisms of tumor immune evasion have been identified, including low intratumor expression of antigens and elevated expression of inhibitory co-regulatory molecules. An effective immunotherapy is one which would induce necrotic cell death and accompanying proinflammatory cytokine induction. Stereotactic Body Radiotherapy (SBRT) or Intensity Modulated Radiotherapy (IMRT) or brachytherapy, which is capable of delivering high, confromal radiation doses (>8 Gy) of tumor ablative radiation may be an effective means of conditioning a tumor bed to a state favorable to the initiation of robust antitumoral immune responses.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

  • Hormone Refractory, Metastatic Prostate Cancer, Lung Cancer, and Melanoma or Breast Cancer

Exclusion Criteria:

  • Life expectancy of less than 3 months

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Sean Park, M.D., Ph.D., M.S.

Open for enrollment

Contact information:

Sean Park M.D., Ph.D., M.S.


More information


Publications are currently not available

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