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Mount Sinai Researchers Report Increasing Incidence of Early-Onset Colorectal Precancerous Lesions in First-of-Its-Kind Study of Patients Under Age 50

Colorectal cancer, once a disease of old age, now increasingly a disease of the young


News provided by

Mount Sinai Health System

Jan 10, 2022, 09:00 ET

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NEW YORK, Jan. 10, 2022 /PRNewswire-PRWeb/ -- In a study published in the journal Gastroenterology, researchers at the Icahn School of Medicine at Mount Sinai describe a troubling increase in early-onset colorectal cancer and precancerous polyps, based on a large, nationally representative study of patients under age 50 who underwent colonoscopy. It was the first large-scale study to look at precancerous polyps in this age group.

"We have known for many years that rates of colorectal cancer are rising in individuals younger than 50, prompting several medical organizations to recommend lowering the screening age from 50 to 45. What has been missing until now is confirmatory data of the prevalence of precancerous polyps in younger individuals. Because precancerous lesions are not reportable to regional or national health agencies, we have not had this degree of information to guide our recommendations. Our study provides an important piece of the puzzle and supports the recommendation changing the screening age to 45," says lead author Steven H. Itzkowitz, MD, FACP, FACG, AGAF, Professor of Medicine (Gastroenterology), Icahn School of Medicine at Mount Sinai. "Our findings also suggest that messaging aimed at young individuals should begin in the years leading up to this new screening age. We know that most patients do not call their doctors on their 50th birthday to schedule a colonoscopy, so we will need to be diligent to reach this much younger cohort before they turn 45," says Dr. Itzkowitz.

"We know that most patients do not call their doctors on their 50th birthday to schedule a colonoscopy, so we will need to be diligent to reach this much younger cohort before they turn 45,” says lead author Steven H. Itzkowitz, MD, Professor of Medicine, Icahn School of Medicine at Mount Sinai

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Increasing age, being male and white, having a family history of colorectal cancer, and having had colonoscopies for reasons of bleeding or screening, were all associated with higher odds of advanced premalignant lesions (APLs) and colorectal cancer. Among patients aged 45-49, 32 percent had neoplasia (precancerous or cancerous lesions considered forerunners to colorectal cancer). Nearly 8 percent had APLs, and 0.58 percent had colorectal cancer. Importantly, the researchers found that the prevalence of neoplasia and APL among those 45-49 were almost as high as those of 50-54-year-olds, and the rates of colorectal cancer were even higher. Moreover, among 40-44 year olds, rates of APL were almost as high as for those aged 45-49, and colorectal cancer rates were comparably high.

The study, titled "Prevalence and Predictors of Young-Onset Colorectal Neoplasia: Insights from a Nationally Representative Colonoscopy Registry," was published today.

Early-onset colorectal cancer accounts for approximately 12 percent of all colorectal cancer cases, with incidence increasing by 2.2 percent annually from 2012-2016, and mortality increasing by 1.3 percent per year from 2008-2017.

"The big driver of this study was the need for really good real-world data to inform screening recommendations," says Dr. Itzkowitz, noting that a recommendation to begin screening at age 45 was put forward by the American College of Gastroenterology (ACG) for African Americans in 2009, but only more recently for all individuals regardless of race/ethnicity by the American Cancer Society (2018), the United States Preventive Services Task Force (2021), and the ACG (2021). "The data confirm what we have been seeing in the clinic—that 45 is now the new 50," says Dr. Itzkowitz. "Colon cancer used to be considered a disease of old age, and that is no longer true."

The team analyzed data collected between January 1, 2014, and February 5, 2021, from high-quality colonoscopies from 123 AMSURG (a division of Envision Healthcare) ambulatory endoscopy centers across 29 states that report their results in the GI Quality Improvement Consortium (GIQuIC) Registry. "To our knowledge, this is the largest study to date investigating the prevalence of precancerous and cancerous lesions in the colon in this age group. We studied approximately 131,000 patients ages 40-49, which represents a significant increase over previous studies which have been limited by small sample sizes, underrepresentation of several racial/ethnic groups, or came from a single institution," says first author Parth D. Trivedi, a fourth-year medical student at Icahn Mount Sinai, who helped design the study and provided statistical analysis.

"To generate a dataset that best represents the general population, we used several exclusion criteria, including colonoscopies performed for surveillance or therapeutic reasons in addition to higher-risk patients with a personal history of polyps, colorectal cancer, or a hereditary colorectal syndrome," says Mr. Trivedi. "It is also the first to provide more granular information, such as the types of lesions detected, the indication for the procedure, and demographics such as age, race, and ethnicity. This information will ultimately inform decision making by primary care doctors on whom to screen and how early."

"Many clinicians are surprised when they find a precancerous polyp in someone younger than age 45. Our data provide new insights into how common these lesions are. Our data also suggest that clinically important lesions occur about five years earlier in individuals with a family history of colorectal cancer, compared to those without a family history," says Dr. Itzkowitz. "That is why it is very important to take a good family history."

"The team's findings reiterate the importance of colorectal cancer awareness—both among patients and clinicians," said study co-author, Jay Popp, MD, Medical Director for AMSURG, a leading provider of colonoscopies. "Colorectal cancer is the second leading cause of cancer death in the United States, but it is one of the most preventable cancers. The more patients know about their bodies and risk for colorectal cancer and the more clinicians can do to help patients receive routine and timely screenings, the more lives we can save. Everyone can play a role in helping a loved one or neighbor prevent colorectal cancer."

About the Mount Sinai Health System
The Mount Sinai Health System is New York City's largest academic medical system, encompassing eight hospitals, a leading medical school, and a vast network of ambulatory practices throughout the greater New York region. Mount Sinai advances medicine and health through unrivaled education and translational research and discovery to deliver care that is the safest, highest-quality, most accessible and equitable, and the best value of any health system in the nation. The Health System includes approximately 7,300 primary and specialty care physicians; 13 joint-venture ambulatory surgery centers; more than 415 ambulatory practices throughout the five boroughs of New York City, Westchester, Long Island, and Florida; and more than 30 affiliated community health centers. The Mount Sinai Hospital is ranked on U.S. News & World Report's "Honor Roll" of the top 20 U.S. hospitals and is top in the nation by specialty: No. 1 in Geriatrics and top 20 in Cardiology/Heart Surgery, Diabetes/Endocrinology, Gastroenterology/GI Surgery, Neurology/Neurosurgery, Orthopedics, Pulmonology/Lung Surgery, Rehabilitation, and Urology. New York Eye and Ear Infirmary of Mount Sinai is ranked No. 12 in Ophthalmology. Mount Sinai Kravis Children's Hospital is ranked in U.S. News & World Report's "Best Children's Hospitals" among the country's best in four out of 10 pediatric specialties. The Icahn School of Medicine is one of three medical schools that have earned distinction by multiple indicators: ranked in the top 20 by U.S. News & World Report's "Best Medical Schools," aligned with a U.S. News & World Report "Honor Roll" Hospital, and No. 14 in the nation for National Institutes of Health funding. Newsweek's "The World's Best Smart Hospitals" ranks The Mount Sinai Hospital as No. 1 in New York and in the top five globally, and Mount Sinai Morningside in the top 20 globally. For more information, visit https://www.mountsinai.org or find Mount Sinai on Facebook, Twitter and YouTube.

Media Contact

Tildy La Farge, Mount Sinai Health System, 212-241-9200, [email protected]

SOURCE Mount Sinai Health System

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