Observation of Clinical Consistency of Organoid-chips Drug Sensitivity in Chemotherapy for PCa With Visceral Metastasis

This study tests whether lab-grown "organoid chips" — tiny models built from a patient's own cancer cells — can accurately predict how prostate cancer with organ spread will respond to chemotherapy. If proven, this could help doctors personalize treatment plans. **You may be eligible if...** - You are 18 or older with prostate cancer that has spread to organs (visceral metastasis) - You are able to provide a surgical or biopsy tissue sample - Your liver, kidney, and bone marrow function meet minimum thresholds **You may NOT be eligible if...** - You have severe heart, liver, kidney, or autoimmune disease unrelated to cancer - A tissue sample cannot be obtained - You have active tuberculosis - You have had or are planned for an organ transplant Talk to your doctor to see if this trial is right for you.