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Colorectal Cancer Genetics and Hereditary Colorectal Cancer Syndromes for the Practicing General Surgeon
Jared R Hendren1, Josh Sommovilla2, Scott R Steele2
1Department of General Surgery, Digestive Disease Institute, Cleveland Clinic, Cleveland, OH, USA; Department of Colorectal Surgery, Digestive Disease Institute, Cleveland Clinic, Cleveland, OH, USA; Sanford R. Weiss, MD Center for Hereditary Colorectal Neoplasia, Department of Colorectal Surgery, Digestive Disease Institute, Cleveland Clinic, Cleveland, OH, USA.
Colorectal cancer (CRC) genetics guides screening and diagnosis. Universal tumor screening for mismatch repair deficiency and germline genetic testing for hereditary syndromes are crucial for patient management and lifelong surveillance.
Area of Science:
- Oncology
- Genetics
- Clinical Medicine
Background:
- Colorectal cancer (CRC) genetics significantly impacts clinical decisions.
- Understanding genetic markers is essential for effective patient care and family screening.
Purpose of the Study:
- To highlight the clinical implications of colorectal cancer genetics.
- To emphasize the importance of universal tumor screening and germline genetic testing.
- To underscore the complexity of managing hereditary CRC syndromes.
Main Methods:
- Review of current guidelines and literature on CRC genetics.
- Analysis of the role of mismatch repair deficiency screening.
- Evaluation of germline genetic testing criteria for hereditary CRC syndromes.
Main Results:
- Universal tumor screening for mismatch repair deficiency is recommended for all CRCs.
- Germline genetic testing is vital for diagnosing hereditary polyposis and nonpolyposis CRC syndromes.
- Identification of patients with hereditary CRC syndromes necessitates specific genetic testing criteria.
Conclusions:
- Genetic testing in colorectal cancer is critical for diagnosis and management.
- Lifelong surveillance and multidisciplinary care are essential for patients with hereditary CRC syndromes.
- Proactive genetic assessment improves outcomes and quality of life for affected individuals and families.
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