Evidence map›Paper›PMID 40833199›Full record

SynthesisANZ journal of surgery2025

BCG Intolerance in Nonmuscle Invasive Bladder Cancer-A Systematic Review.

Claris Oh, Georgia Bourlotos, Michael O'Callaghan, Luke Grundy, Matthew Hong

Abstract readSystematic Review
In one paragraph

Synthesis in ANZ journal of surgery, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

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

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
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

5 authors.

Claris OhCollege of Medicine and Public Health, Flinders University, Adelaide, Australia.ORCID 0000-0003-4211-0673
Georgia BourlotosCollege of Medicine and Public Health, Flinders University, Adelaide, Australia.
Michael O'CallaghanCollege of Medicine and Public Health, Flinders University, Adelaide, Australia.
Luke GrundyCollege of Medicine and Public Health, Flinders University, Adelaide, Australia.
Matthew HongCollege of Medicine and Public Health, Flinders University, Adelaide, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMost patients with localized bladder cancer are initially managed with endoscopic resection. For high-grade nonmuscle invasive bladder cancer (NMIBC), intravesical Bacillus Calmette-Guerin (BCG) therapy is the gold standard adjuvant treatment. However, 30%-40% of patients fail BCG treatment with lack of response or disease relapse. An understudied area of treatment failure is BCG intolerance, where patients drop out of treatment due to adverse effects.

objectivesTo examine the incidence and underlying reasons for BCG intolerance among adult patients with NMIBC.

methodsWe conducted a search on Embase, MEDLINE, and Cochrane Central Register of Controlled Trials for studies from January 1, 1974 to January 10, 2023, retrieving 3340 articles. Two authors independently conducted screening and data extraction with Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines. Inclusion criteria include English-language studies reporting dropout rates and reasons for discontinuation of BCG therapy in NMIBC patients.

resultsBCG dropout rates reported among the 28 included studies varied widely from 0% to 52% (estimated summary proportion 12.8%, 95% CI 9%-17%). There was significant heterogeneity in study design. Subgroup analyses show a dose-dependent effect on dropout rates (3.3% vs. 20%, X

conclusionsDropout rates due to BCG intolerance average 12.8%. As cessation of treatment could lead to an increased risk in progression or recurrence of disease, strategies to mitigate BCG intolerance would be valuable.

Indexed as

Adjuvants, ImmunologicBCG VaccineUrinary Bladder NeoplasmsAdministration, IntravesicalHumansNeoplasm InvasivenessTreatment FailureAdjuvants, ImmunologicBCG Vaccinebladder cancerimmunotherapyintoleranceNMIBCside effectstoxicityurothelial carcinoma bacille calmette‐guerin (BCG)

Identifiers

PMID40833199
PMCPMC12717502

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.