Overview

The purpose of this registry study is to create a database-a collection of information-for better understanding young onset colorectal cancer. Colorectal cancer patients are considered to have young onset colorectal cancer if they are diagnosed with their cancer before the age of 50. Researchers will use the information from this database to learn more about how young onset colorectal cancer may be similar to or different from colorectal cancer that is diagnosed later in life. Researchers will also use information from the database for current and future research on young onset colorectal cancer.

Eligibility

Inclusion Criteria:

Participant Inclusion Criteria for database and questionnaire (YOGI)

• Histological or cytological diagnosis of gastrointestinal cancer
• 18 - 49 years old at time of consent
• No Known hereditary CRC or other cancer predisposition syndrome (stool collection cohort only)
• No history of inflammatory bowel disease (stool collection cohort only)
• No prior diagnosis of gastrointestinal cancer (stool collection cohort only)

Participant Inclusion Criteria for database and questionnaire (Controls)

• Histological or cytological diagnosis of colorectal adenocarcinoma
• No previous treatment for CRC (including surgery, chemotherapy, immunotherapy or radiation)
• Age 50 or older at time of consent
• No Known hereditary CRC or other cancer predisposition syndrome
• No history of inflammatory bowel disease
• No prior diagnosis of CRC