Statin use is associated with a decreased risk of Barrett's esophagus.

Nguyen T, Khalaf N, Ramsey D, El-Serag HB. Statin use is associated with a decreased risk of Barrett's esophagus. Gastroenterology. 2014 Aug 1; 147(2):314-23.

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Abstract:

BACKGROUND and AIMS: Statins have been associated with a reduced risk of esophageal adenocarcinoma, but little is known about their effect on development of Barrett's esophagus. We evaluated the association between statins and risk of Barrett's esophagus. METHODS: We conducted a case-control study among eligible patients scheduled for elective esophagogastroduodenoscopy and patients eligible for screening colonoscopy, recruited from primary care clinics at a Veterans Affairs center. We compared 303 patients with Barrett's esophagus with 2 separate sex-matched control groups: 606 elective endoscopy controls and 303 primary care controls without Barrett's esophagus. Use of statins and other lipid-lowering medications was ascertained by reviewing filled prescriptions in electronic pharmacy records during a 10-year period before the Barrett's esophagus diagnosis date for patients and study endoscopy date for controls. We calculated odds ratios (OR) and 95% confidence intervals (CI) using conditional multivariable logistic-regression models among 276 patients and 828 controls further matched on age. RESULTS: A smaller proportion of Barrett's esophagus patients filled statin prescriptions (57.4%) than endoscopy controls (64.9%; P = .029) or primary care controls (71.3%; P < .001). Controls had longer durations of statin prescriptions filled than patients (28.6 vs 22.1 months; P = .001). Statin use was associated with a significantly lower risk of Barrett's esophagus (adjusted OR = 0.57; 95% CI: 0.38-0.87) compared with the combined control groups. The risk of Barrett's esophagus was especially lower with statin use among obese patients (OR = 0.26; 95% CI: 0.09-0.71), as was the risk for Barrett's esophagus segments = 3 cm (OR = 0.13; 95% CI: 0.06-0.30). We found no significant association between Barrett's esophagus and nonstatin lipid-lowering medications (P = .452). CONCLUSIONS: In a case-control study of veterans, statin use was associated with a reduced risk of Barrett's esophagus. The greatest level of risk reduction was observed for obese patients and for long-segment Barrett's esophagus.