Introduction: The present study showed the involvement of immunosuppressive myeloid-derived suppressor cells during the disease progression in a 69-year-old man with a prostate cancer.

Case Presentation: The patient with metastatic PC (cT4N1M1ab) was initially treated with primary androgen deprivation therapy for 5 months and then chemotherapy with docetaxel, but he expired at the 8th month. In order to investigate whether myeloid-derived suppressor cells are implicated in the cancer exacerbation during androgen deprivation therapy, we assessed the long-term changes in peripheral blood myeloid-derived suppressor cell fractions by using flow cytometry. While prostate-specific antigen levels decreased after androgen deprivation therapy, the population of each myeloid-derived suppressor cell subsets increased during disease deterioration.

Conclusion: Increase in myeloid-derived suppressor cells populations was correlated with prostate cancer progression.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8560438PMC
http://dx.doi.org/10.1002/iju5.12351DOI Listing

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