期刊
BRITISH JOURNAL OF CLINICAL PHARMACOLOGY
卷 78, 期 2, 页码 258-273出版社
WILEY
DOI: 10.1111/bcp.12306
关键词
diabetes mellitus; meta-analysis; pioglitazone; rosiglitazone; thiazolidinedione; urinary bladder neoplasm
资金
- National Institute for Health Research [ACF-2013-06-001, ACF-2012-07-001] Funding Source: researchfish
AIMS To determine whether thiazolidinedione use is associated with a risk of bladder cancer. METHODS We searched MEDLINE and EMBASE in June 2012 (with PubMed update to July 2013) and conducted meta-analysis on the overall risks of bladder cancer with pioglitazone or rosiglitazone and the risk with different categories of cumulative dose or duration of drug use. RESULTS We screened 230 citations and included 18 studies, comprising five randomized controlled trials (RCTs) and 13 observational studies. Meta-analysis showed a significantly higher overall risk of bladder cancer with pioglitazone in RCTs [7878 participants; odds ratio (OR) 2.51, 95% confidence interval (CI) 1.09-5.80] and observational studies (>2.6 million patients; OR for 'ever' users vs. non-users 1.21, 95% CI 1.09-1.35). Subgroup analysis of observational studies by cumulative dose showed the risk of bladder cancer to be greatest with >28.0 g of pioglitazone (OR 1.64, 95% CI 1.28-2.12). A significantly increased risk was found with both 12-24 months (OR 1.41, 95% CI 1.16-1.71) and >24 months (OR 1.51, 95% CI 1.26-1.81) cumulative durations of pioglitazone exposure. No significant risk was seen with rosiglitazone in RCTs (OR 0.84, 95% CI 0.35-2.04) or 'ever' users vs. non-users in observational studies (OR 1.03, 95% CI 0.94-1.12); the evidence for any relationship between bladder cancer risk and rosiglitazone cumulative duration is limited and inconsistent. Direct comparison of pioglitazone to rosiglitazone 'ever' users yielded an OR of 1.25 (95% CI 0.91-1.72). CONCLUSIONS A modest but clinically significant increase in the risk of bladder cancer with pioglitazone was found, which appears to be related to cumulative dose and duration of exposure. We recommend that prescribers limit pioglitazone use to shorter durations.
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