Know Your Biomarker

Tumor Sidedness

We’re on your side.

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Left and right sided colon diagram

Count Us In Pact

Millions of cancer patients remain invisible to the systems meant to care for them. Let’s change that.
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Learn about colorectal cancer

From risk factors and screening to comprehensive treatment and personalized medicine, GCCA has colorectal cancer educational information for patients, caregivers, and families.

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Know Your Biomarker

Learn about personalized medicine, colorectal cancer biomarkers, and how your biomarkers affect your treatment options.

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GCCA around the world

122

Member organizations

58

Countries represented

6m

Patients served

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Get the latest news & updates from GCCA

Explore the latest from GCCA

05 Nov 2025
GCCA in Action: Japanese American Initiative
Highlights of GCCA's work with the Japanese American community.
10 Nov 2025
2025 Global CRC Congress Advances Health Equity in Colorectal Cancer
GCCA presents the 2025 Global CRC Congress.
29 Oct 2025
Patient-Centered Outcomes Research Institute (PCORI) Annual Meeting
Advocate Aiko Brody shares her experience at PCORI's annual meeting.
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Become a member

GCCA is committed to building a strong international community of organizations and advocates who are dedicated to fighting colorectal cancer.