Journal of the Canadian Association of Gastroenterology · 2026
Global variability in colorectal cancer screening guidelines: panel composition and recommendations.
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Nakajima Koki, Saito Hiroaki, Nishikawa Yoshitaka
Аннотация
OBJECTIVE: Colorectal cancer (CRC) is a leading cause of cancer-related mortality worldwide. Although many countries have developed CRC screening guidelines, how CRC screening guidelines are developed across countries remains unclear. This study examined guideline-development funding, stakeholders, and their conflicts of interest (COI), and compared CRC screening recommendations across Group of Seven (G7) countries.
METHODS: We reviewed the most recent CRC screening guidelines issued by official research organizations or governmental bodies in G7 countries. We extracted information on responsible organizations, panel composition, recommendations, target ages, screening tests and intervals, supporting evidence, funding, and COI.
RESULTS: While CRC screening recommendations showed some similarities across G7 countries, some differences were observed in starting age, screening modality, and implementation structure. Differences were also identified in funding, COI reporting and management, and stakeholder composition, including limited involvement of patient and public representatives.
CONCLUSIONS: Colorectal cancer screening guidelines among G7 countries varied despite shared international evidence. These differences likely reflect country-specific factors, including population characteristics, screening participation, health system capacity, and cultural context. Given that guideline development involves diverse stakeholders, ensuring transparency in the guideline-development process is essential.
METHODS: We reviewed the most recent CRC screening guidelines issued by official research organizations or governmental bodies in G7 countries. We extracted information on responsible organizations, panel composition, recommendations, target ages, screening tests and intervals, supporting evidence, funding, and COI.
RESULTS: While CRC screening recommendations showed some similarities across G7 countries, some differences were observed in starting age, screening modality, and implementation structure. Differences were also identified in funding, COI reporting and management, and stakeholder composition, including limited involvement of patient and public representatives.
CONCLUSIONS: Colorectal cancer screening guidelines among G7 countries varied despite shared international evidence. These differences likely reflect country-specific factors, including population characteristics, screening participation, health system capacity, and cultural context. Given that guideline development involves diverse stakeholders, ensuring transparency in the guideline-development process is essential.