BCG Revaccination for the Prevention of Mycobacterium tuberculosis Infection.
Schmidt AC, Fairlie L, Hellström E, Luabeya Kany Kany A, Middelkoop K, Naidoo K, Nair G, Gela A, Nemes E, Scriba TJ, Cinar A, Frahm N, Mogg R, Kaufman D, Dunne MW, Hatherill M, BCG REVAX Study Team
Paper source
BCG Revaccination for the Prevention of Mycobacterium tuberculosis Infection.
This rigor review was examined and confirmed by Adcurare Editorial · July 7, 2026
How this rating was calculated▸
- IntegrityIntegrity concern ×3−1.5★
- ReportingData & code availability partially met−0.25★
- Data/code availability incomplete
- Internal contradictions in the reported numbers
- Other integrity concern
This Adcurare Rigor Review uses AI Rigor Reviewers trained on a curated corpus of high-fidelity and retracted papers, with expert supervision and curation. It can still make mistakes; verify each finding against the source before relying on it.
The paper reports a well-designed phase 2b RCT of BCG revaccination for prevention of sustained Mtb infection. The study design, statistical analysis, and reporting transparency are strong. However, there are notable gaps in the reporting of biological variables (limited demographics, no weight/health details), ethical approvals (unnamed IRB, no protocol number, minimal consent description), key resources (placebo not described, no statistical software named), and data/code availability (no explicit data sharing statement).
Three independent reviewers evaluated all eight dimensions; the synthesis weighed their combined evidence, with specific, verifiable evidence from any reviewer carrying more weight. The statistics verification component checked 2 tests (both consistent). The citation check found no retracted or unresolved references. The integrity check flagged minor internal contradictions in participant counts (1836 vs 1835) and mITT calculation (871 vs 872), which are likely typographical errors.
10 major claims checked against the paper's own evidence: all adequately supported.
Recomputed 2 tests: 2 consistent, 0 inconsistent, 2 via agent-written checks.
3 integrity concerns flagged (0 high).
7 copyedit issues flagged: mostly other, consistency, clarity.
Checked 15 references: 9 verified — 6 not checked.
4 data/code links checked; 3 live.
Registered (2 IDs: ClinicalTrials.gov). Reporting guideline cited: CONSORT.
The manuscript is ready after minor-to-moderate edits. The core science and design are sound, but the reporting gaps in ethics, resources, and data availability must be addressed to meet journal standards. The internal contradictions in participant numbers should be corrected. The copyedit issues are minor and easily fixed.
- 1.HIGHethicsAdd the name of the specific IRB/Ethics Committee that approved the trial and the protocol approval number in the Methods (Trial oversight) section.A named ethics committee and approval number are required for human trials; the current statement is too vague.
- 2.HIGHethicsAdd a clear description of the informed consent process (written consent, assent, waiver) in the Methods section, not just an abbreviation in a figure legend.Informed consent is a fundamental ethical requirement for human research; the current mention is inadequate.
- 3.HIGHdata codeAdd a dedicated Data Availability statement in the Methods or end matter specifying the mechanism for accessing de-identified individual participant data (e.g., via a named repository, managed access platform, or data access committee).ICMJE and most journals require a data sharing statement for clinical trials; the current trial registration number alone is insufficient.
- 4.HIGHreportingCorrect the internal contradiction in participant numbers: the abstract states 918 BCG + 917 placebo = 1835, but the results section states 919 BCG + 917 placebo = 1836. Ensure consistency throughout.Internal contradictions in participant counts undermine trust in the data and will be flagged by reviewers.
- 5.HIGHreportingCorrect the mITT population count: from 919 randomized to BCG, exclusions (38+9+0=47) should yield 872, not 871. Verify and correct the number in the text and Table 1.A one-participant discrepancy in the primary analysis population is a minor but fixable error that could raise questions about data handling.
- 6.HIGHreportingDescribe the placebo composition (e.g., saline, vehicle) in the Methods (Trial Design and Objectives) section.The placebo is a key resource; its composition must be reported for reproducibility.
- 7.HIGHstatisticsName the statistical software (e.g., SAS 9.4, R 4.0, Stata 16) and its version in the Statistical Analysis section.Software identification is a standard reporting requirement for reproducibility.
- 8.HIGHreportingExpand the race/ethnicity reporting in the Baseline Characteristics table to include all categories (e.g., White, Asian, Mixed, Other) rather than only 'Black African'.Limited demographic reporting reduces the generalizability assessment and is a common reviewer concern.
- 9.MEDIUMreportingReport baseline weight (or BMI) and a more detailed health status (e.g., comorbidities, laboratory values) in the Baseline Characteristics table.Weight and health status are important biological variables for a vaccine trial in adolescents.
- 10.MEDIUMreportingCite the CONSORT 2010 checklist in the Methods to explicitly reference adherence to a reporting guideline for clinical trials.Explicitly naming the reporting guideline is a standard expectation for RCTs.
- 11.MEDIUMreportingAdd a statement about code availability (or state that no custom code was used) in the Data Availability section.Code sharing is increasingly expected; even a statement that no code was used is informative.
- 12.LOWcopyeditExpand 'ICF' to 'Informed Consent Form' at first use in the Figure 1 legend.Minor readability improvement.
- 13.LOWcopyeditDefine 'IGRA' on first use in the abstract body (it is currently only in the title).Consistency and clarity for readers.
- 14.LOWcopyeditRemove the stray empty parentheses '()' after 'intradermally' in the Methods (Trial Design and Objectives) section.Stray punctuation is a minor formatting error.
- 15.LOWcopyeditRemove the stray empty parentheses '()' after 'groups' in the Results (Baseline characteristics and disposition) section, or add a reference to the CONSORT figure.Stray punctuation is a minor formatting error.
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