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Title: Increased risk of colorectal cancer in patients with chronic tophaceous gout: a population-based study
Authors: Boustany, Antoine
Rahhal, Romy
Mitri, Jad
Onwuzo, Somtochukwu
Zeid, Hadi Khaled Abou
Asaad, Imad
Affiliations: Faculty of Medicine 
Keywords: Colon cancer
Colorectal cancer
Tophaceous gout
Issue Date: 2023
Publisher: National Library of Medicine
Part of: Arquivos de Gastroenterologia
Volume: 60
Issue: 3
Start page: 339
End page: 344
The study aims to investigate the risk of developing Colorectal cancer in patients with a history of chronic tophaceous gout. •A retrospective cohort analysis of adults extracted from a validated multicenter and research platform database from hospitals in the United States was utilized. •The risk of Colorectal cancer was statistically significantly increased in male gender, smokers, alcoholics, obese, type 2 Diabetic, and chronic tophaceous gout patients. •The risk of developing Colorectal cancer was significantly higher in patients who have a history of Chronic tophaceous gout while accounting for potential confounding variables. Background - Colorectal cancer is the third most common type of cancer in both men and women and ranks second as the most common cause of cancer death in the United States. Classic risk factors include tobacco smoking, high alcohol consumption, physical inactivity and excess body weight. A prospective study found that an elevated serum uric acid was associated with higher rates of cancer-associated polyps. Interestingly, other studies found an association between elevated levels of serum uric acid and other types of cancer including colorectal cancer. Objective - Our study aimed to evaluate whether patients with chronic tophaceous gout had an increased risk of developing colorectal cancer. Methods - A validated multicenter and research platform database of more than 360 hospitals from 26 different healthcare systems across the United States was utilized to construct this study. Patients aged 18 years and above were included. Individuals who have had a history of familial adenomatous polyposis, a family history of colon cancer, and those diagnosed with inflammatory bowel disease were excluded from the analysis. The risk of developing colon cancer was calculated using a multivariate regression analysis to account for potential confounders. Results - 80,927,194 individuals were screened in the database and 70,177,200 were selected in the final analysis after accounting for inclusion and exclusion criteria. Type 2 diabetics (28.57%), smokers (10.98%), obese individuals (18.71%), alcoholics (3.13%), and patients who have had a diagnosis of chronic tophaceous gout were more common in the colon cancer group compared to those without the malignancy. Using multivariate regression analysis, risk of colon cancer was calculated for male gender (OR: 1.02; 95%CI: 1.01-1.03), smokers (OR: 1.54; 95%CI: 1.52-1.56), alcoholics (OR: 1.40; 95%CI: 1.37-1.43), obese patients (OR: 1.52; 95%CI: 1.50-1.54), type 2 diabetic individuals (OR: 3.53; 95%CI: 3.50-3.57), and those who have had a diagnosis of chronic tophaceous gout (OR: 1.40; 95%CI: 2.48-3.23). Conclusion - As expected, patients with colon cancer were found to have a higher prevalence in males, obese, tobacco and alcohol users. We also demonstrated that patients with gout have a significantly higher prevalence of CRC than those who do not before and after adjusting for metabolic risk factors. In fact, uric acid was found to induce production of reactive oxygen species, thus potentially promoting tumorigenesis. It would be interesting to assess the prevalence of colon cancer in patients with gout who have a serum uric acid that is less than 7 mg/dL. This might promote a tighter control of serum uric acid levels in this population in order to decrease the risk of colon cancer.
ISSN: 00042803
DOI: 10.1590/S0004-2803.230302023-43
Open URL: Link to full text
Type: Journal Article
Appears in Collections:Faculty of Medicine

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