The Gastrointestinal Cancer Observational Study (GICOS)
This is an observational study of individuals with suspected or confirmed gastrointestinal cancer. The purpose of this study is to look at these individuals to understand gastrointestinal cancer and develop new and better ways to treat this disease.
Esophageal cancer, gastric cancer, colon cancer, rectal cancer, appendix cancer, anal cancer, hepatocellular cancer, biliary cancer, pancreatic cancer, GI neuroendocrine tumors [NET], and GI stromal tumors [GISTs]).
- Individuals aged 18 years or older,
- Suspected or confirmed diagnosis of one of the following gastrointestinal cancers:
*GI neuroendocrine tumors [NET],
*GI stromal tumors [GISTs]).
18 - 99
Healthy Volunteers Needed
Duration of Participation
Participants will be followed for as long the study remains active.
Knight Cancer Institute Clinical Trials
503 494 -1080