A Study of GC203 TIL in Advanced Malignant Solid Tumors

This study is testing a new type of cell therapy called GC203 TIL — a treatment made from your own immune cells — in people with advanced cancers that have spread and have not responded to standard treatments. **You may be eligible if...** - You are between 18 and 75 years old - You have advanced cancer that has spread (such as ovarian, endometrial, cervical, breast, gastrointestinal, or lung cancer) - Your cancer has already been treated with standard therapies (like chemotherapy, radiation, targeted therapy, or immunotherapy) and those treatments have stopped working - You have a tumor that can be safely biopsied or removed to make the cell therapy **You may NOT be eligible if...** - Your cancer has not yet tried standard treatments - Your tumor cannot be safely accessed for removal - You have severe organ problems or other serious health conditions Talk to your doctor to see if this trial is right for you.