Volume 59, Issue S1 pp. S91-S97
REVIEW
Open Access

Evolving data on risk and current screening recommendations for colorectal cancer in cystic fibrosis: Pre- and posttransplant

Zain Raza MD

Zain Raza MD

Department of Internal Medicine, Division of Gastroenterology & Hepatology, Saint Louis University School of Medicine, Saint Louis, Missouri, USA

Contribution: Writing - original draft

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Bianca N. Islam MD, PhD

Bianca N. Islam MD, PhD

Department of Medicine, Division of Gastroenterology and Liver Disease, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA

Department of Medicine, Case Western Reserve University, School of Medicine, Cleveland, Ohio, USA

Contribution: Writing - original draft

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Christine Y. Hachem MD

Christine Y. Hachem MD

Department of Internal Medicine, Division of Gastroenterology & Hepatology, Saint Louis University School of Medicine, Saint Louis, Missouri, USA

Contribution: Supervision, Writing - review & editing, Conceptualization

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Linda C. Cummings MD, MS

Corresponding Author

Linda C. Cummings MD, MS

Department of Medicine, Division of Gastroenterology and Liver Disease, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA

Department of Medicine, Case Western Reserve University, School of Medicine, Cleveland, Ohio, USA

Correspondence Linda C. Cummings, MD, MS, Department of Medicine, Division of Gastroenterology and Liver Disease, University Hospitals Cleveland Medical Center, Cleveland, OH, USA. 

Email: [email protected]

Contribution: Writing - review & editing, Supervision, Visualization, Conceptualization

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First published: 06 August 2024
Citations: 2

Zain Raza and Bianca N. Islam shared equal authorship.

Abstract

Advances in treatment for cystic fibrosis (CF), including cystic fibrosis transmembrane conductor regulator (CFTR) modulators, have ushered in an era where patients with CF have much longer life expectancies. This shift in life expectancy demands increased attention to diseases of aging in patients with CF. A notable complication of CF is early-onset colorectal cancer (CRC), which is especially prevalent in patients with severe mutations and after transplant. CFTR acts as a tumor suppressor gene based on knockout models. Lack of CFTR expression promotes carcinogenic processes such as intestinal inflammation and deleterious gut microbiome changes. The consensus Cystic Fibrosis Foundation recommendations advocate treating this population as a high-risk group, using a colonoscopy-only screening strategy starting at age 40 in patients without transplant and at age 30 after transplant. Screening should be considered every 5 years if negative and every 3 years or sooner for patients with adenomatous polyps. Future research will determine the role of noninvasive CRC screening tools in this population, as well as the effects of CFTR modulators on the risk of developing CRC.

CONFLICT OF INTEREST STATEMENT

The authors declare no conflict of interest.

DATA AVAILABILITY STATEMENT

Data sharing is not applicable to this article as no new data were created or analyzed in this study.

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