This study is for adults with advanced cancer in the colon, rectum, stomach, or pancreas. Advanced cancer means the cancer can't be removed by surgery or has spread to other parts of the body. This study helps find the best dose of a new medicine called BI 765049, which might help the immune system fight cancer. People in the study will get this medicine at least every 3 weeks, for up to 3 years, as long as it is helping them.
Participants will visit the hospital regularly, sometimes staying overnight. Doctors will check their health and look out for any unwanted effects, which are health issues thought to be caused by the medicine. To learn more about the right dose, researchers will track severe health problems that happen within a week after the first dose.
- Participants must be 18 or older and have specific cancers.
- They must not have had major surgery within the past 28 days.
- Regular hospital visits and potential overnight stays are required.