Washington University Participant Engagement and Cancer Genomic Sequencing Center (WU-PE-CGS)

This Washington University study collects tumor DNA and other biological samples from patients with specific cancer types to study the genetic drivers of their disease. The goal is to improve understanding of these cancers and help develop more targeted treatments. **You may be eligible if...** - You are 18 or older - You have been diagnosed with cholangiocarcinoma (bile duct cancer), multiple myeloma (blood cancer), or early-onset colon or rectal cancer - If you have multiple myeloma, you must identify as African American - If you have colon or rectal cancer, you must be African American AND were diagnosed at age 65 or younger - You are willing and able to sign the informed consent form **You may NOT be eligible if...** - You do not have one of the specified diagnoses - You do not meet the race/ethnicity or age-at-diagnosis requirements for myeloma or colorectal cancer - You are not willing or able to provide informed consent Talk to your doctor to see if this trial is right for you.