Evidence map›Paper›PMID 30800561›Full record

ArticleDiabetology international2019

Pioglitazone use and risk of bladder cancer: a systematic literature review and meta-analysis of observational studies.

Juha Mehtälä, Houssem Khanfir, Dimitri Bennett, Yizhou Ye, Pasi Korhonen, Fabian Hoti

Abstract read
In one paragraph

Article in Diabetology international, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. The egyptian clinical practice guidelines for the diagnosis and management of metabolic associated fatty liver disease.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association
    Guideline
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  12. Therapeutic pipeline in nonalcoholic steatohepatitis.Nature reviews. Gastroenterology & hepatology · 2021
    Review
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  14. Article
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  17. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Juha MehtäläEPID Research Oy, Metsänneidonkuja 12, 02130 Espoo, Finland.
Houssem KhanfirEPID Research Oy, Metsänneidonkuja 12, 02130 Espoo, Finland.
Dimitri BennettTakeda Pharmaceutical Company Limited, Cambridge, MA USA.
Yizhou YeTakeda Pharmaceutical Company Limited, Cambridge, MA USA.
Pasi KorhonenEPID Research Oy, Metsänneidonkuja 12, 02130 Espoo, Finland.
Fabian HotiEPID Research Oy, Metsänneidonkuja 12, 02130 Espoo, Finland.ORCID 0000-0002-7464-3549

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundStudies investigating bladder cancer risk in pioglitazone-treated type 2 diabetes mellitus patients report conflicting results. Previous meta-analyses on this topic utilized publications prior to 2013. More long-term observational studies have been published since then. We reviewed the accumulated evidence and updated findings from previous meta-analyses.

methodsThis meta-analysis was based on a systematic review of peer-reviewed observational studies published prior to September 30, 2016. Eligible studies were identified using a specified MEDLINE search. References from included studies and from previous meta-analyses were screened for additional records. Meta-analysis hazards ratios were derived using a random-effects model. Several sensitivity analyses including hierarchical Bayesian meta-analysis with country-specific effects were conducted.

resultsOf 363 identified records, 23 studies were included in this review and 18 in the actual meta-analyses. For bladder cancer outcome, the estimated effect size for ever vs. never use of pioglitazone was 1.16 [95% confidence interval (CI), 1.04-1.28]. In the cumulative dose and duration analyses, highest effect was observed in the highest/longest exposure group, but substantial heterogeneity was present. In the sensitivity analysis, only studies adjusted for lifestyle-related factors were included and the frequentist effect size was 1.18 (95% CI, 1.00-1.40,

conclusionsIn line with previous meta-analyses, we observed a small but statistically significant association between ever (vs. never) use of pioglitazone and bladder cancer risk; however, causality is not established and alternative explanations cannot be ruled out.

Indexed as

Bladder cancerMeta-analysisObservational studiesPioglitazoneReview

Identifiers

PMID30800561
PMCPMC6357234

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.