Immunotherapy-related CRP Kinetics in Metastatic Gynecological Malignancies

This study is tracking CRP (C-reactive protein, a blood inflammation marker) in women with advanced gynecological cancers (ovarian, endometrial, cervical, etc.) receiving immunotherapy, to see if CRP levels can predict treatment response. **You may be eligible if...** - You are a woman 18 or older - You have confirmed metastatic or advanced gynecological cancer - You are receiving or about to receive immunotherapy (immune checkpoint inhibitor) as part of your care **You may NOT be eligible if...** - Your cancer is not a gynecological cancer - You are not eligible for or not receiving immunotherapy - You have another condition causing very high CRP unrelated to cancer Talk to your doctor to see if this trial is right for you.