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Summary   Background  Increase in lipid levels associated with the treatment of inflammatory bowel disease (IBD) has previously been reported. However, it is unknown if this effect is similar for all IBD drug classes.    Aim  To precisely assess the effect of different IBD drug classes on lipid profiles    Methods  We performed a systematic literature search of randomised controlled trials and observational cohort studies that assessed lipid levels before and after induction (≤10 weeks) and maintenance (>10 weeks) of IBD treatment. Data of 11 studies (1663 patients) were pooled using random effects models. The influence of patient and disease characteristics on treatment effects on total cholesterol levels was analysed in 6 studies (1211 patients) for which individual data were available, using linear mixed models.    Results  A statistically significant increase in total cholesterol was observed after induction treatment with corticosteroids (+1.19 mmol/L, 95% confidence interval [CI 95 ] +0.52 to +2.59), and tofacitinib (+0.66 mmol/L, CI 95  +0.42 to +0.79), but not after anti−TNFα treatment (−0.11 mmol/L, CI 95  −0.26 to +0.36 mmol/L). Similar differences were observed after maintenance treatment. Treatment effects were significantly related to age, but not with other factors. Lipid changes were inversely correlated with but not modified by CRP changes.    Conclusions  Increase in total cholesterol levels was strongest for corticosteroids followed by tofacitinib but was not observed for anti‐TNFα agents. Whether total cholesterol change associated with IBD treatment has an effect on cardiovascular risk requires further study.

Systematic review with meta‐analysis: effect of inflammatory bowel disease therapy on lipid levels