A Study of BL-B01D1 in Patients With Locally Advanced or Metastatic Solid Tumor

This study is testing a new cancer drug called BL-B01D1 in people with advanced or metastatic solid tumors that haven't responded to standard treatments. Researchers want to find the right dose and see how well it works. **You may be eligible if...** - You are 18 or older (up to 75 for early phase) - You have a confirmed advanced or metastatic solid tumor with no remaining standard treatment options - You have measurable cancer that can be tracked on scans - Your heart, kidneys, liver, and blood counts are within acceptable ranges - Your expected survival is at least 3 months - You are in generally good physical condition (able to care for yourself) **You may NOT be eligible if...** - You have had major cancer treatments within the past 4 weeks - You have a serious heart condition (heart failure, recent heart attack, irregular heartbeat) - You have active autoimmune diseases requiring ongoing treatment (e.g., lupus, rheumatoid arthritis) - You have another active cancer diagnosis Talk to your doctor to see if this trial is right for you.