Quantifying the Risk of Drug-Induced Pancreatitis With Angiotensin-Converting Enzyme Inhibitors and Statins Using a Large Electronic Medical Record Database

The association between trajectory of serum cholesterol, statin dosage, and the risk of recurrent biliary stone diseases

BACKGROUND

Statins may reduce the risk of recurrent gallstone disease by decreasing bile cholesterol saturation and pathogenicity. However, limited studies have investigated this issue. This study aimed to assess whether statin doses and serum cholesterol levels were associated with a decreased risk of recurrent biliary stone diseases after the first event index, with a follow-up time of 15 years.

METHODS

Based on the Chang Gung Research Database (CGRD) between January 1, 2001, and December 31, 2020, we enrolled 68,384 patients with the International Classification of Diseases, Ninth and Tenth Revision codes of choledocholithiasis. After exclusions, 32,696 patients were divided into non-statin (<28 cDDD, cumulative defined daily doses) (n = 27,929) and statin (≥28 cDDD) (n = 4767) user groups for analysis. Serum cholesterol trajectories were estimated using group-based trajectory modeling (n = 8410).

RESULTS

The statin users had higher Charlson Comorbidity Index (CCI) scores than the non-statin users. Time-dependent Cox regression analysis showed that statin use >365 cDDD was associated with a significantly lower risk of recurrent biliary stones (adjusted hazard ratio [aHR] = 0.28, 95% CI, 0.24-0.34; p < 00.0001), acute pancreatitis (aHR = 0.24, 95% CI, 0.17-0.32, p < 00.0001), and cholangitis (aHR = 0.28, 95% CI, 0.25-0.32, p < 00.0001). Cholecystectomy was also a protective factor for recurrent biliary stones (aHR = 0.41, 95% CI, 0.37-0.46; p < 00.0001). The higher trajectory serum cholesterol group (Group 3) had a lower risk trend for recurrent biliary stones (aHR = 0.79, p = 0.0700) and a lower risk of cholangitis (aHR = 0.79, p = 0.0071).

CONCLUSION

This study supports the potential benefits of statin use and the role of cholecystectomy in reducing the risk of recurrent biliary stone diseases.

Statins exposure and acute pancreatitis: a retrospective cohort study using a large national insurance database

OBJECTIVES

The association between the use of statins and the incidence of acute pancreatitis (AP) has yielded inconsistent findings. While statins have been implicated as an aetiology for drug-induced pancreatitis, more recent studies have found statin use is associated with a reduced risk of pancreatitis. We sought to examine the association between the use of any statin medications and the risk of AP using large real-world data.

DESIGN

All data were collected retrospectively, but individuals were prospectively followed forward in time to determine the outcome of interest using International Classification of Diseases, 10th Revision, Clinical Modification codes indicating a diagnosis of AP. A stratified Cox proportional hazards regression model was conducted to examine the association of statins use with AP.

SETTINGS

Merative MarketScan claims database 2017-2020.

PARTICIPANTS

Individuals who filled any statin prescriptions with at least 80% proportion of days covered between 1 January 2017 and 31 December 2017 and were continuously enrolled in the database from 2016 to 2020. We also identified non-users of statins and constructed multiple strata of individuals based on the 14 confounders of interest.

RESULTS

Among 1 695 914 individuals, 226 314 had filled their statins prescription during the study period. Unadjusted incidence rates of AP generally showed higher rates among statins users. The unadjusted incidence rate and 95% CI per 1000 person-years of follow-up was 0.63 (95% CI: 0.61 to 0.66) for non-statin users, versus 0.92 (95% CI: 0.86 to 0.98) for statins users. However, a stratified Cox proportional hazards regression analysis yielded a HR of 0.92 (95% CI: 0.84 to 1.01) for statins users, indicating no difference between the two groups.

CONCLUSIONS

In this large real-world analysis, use of statins was not associated with a higher risk of AP in this US healthcare setting.