Evidence map›Paper›PMID 22606361›Full record

Trial reportPloS one2012

Iron status predicts treatment failure and mortality in tuberculosis patients: a prospective cohort study from Dar es Salaam, Tanzania.

Sheila Isanaka, Said Aboud, Ferdinand Mugusi, Ronald J Bosch, Walter C Willett, Donna Spiegelman, Christopher Duggan, Wafaie W Fawzi

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed, 2 pooled it
3.1field-weighted citation impact, top 8% of its field
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

42 citing papers in PubMed, 2 syntheses or guidelines pooled it, 67 citations in OpenAlex.

  1. Pooled it
  2. Anemia, Iron Status, and HIV: A Systematic Review of the Evidence.Advances in nutrition (Bethesda, Md.) · 2020
    Pooled it
  3. Trial
  4. Trial
  5. Review
  6. Micronutrient status and risk of Mycobacterium tuberculosis infection in Indonesian tuberculosis case contacts.Transactions of the Royal Society of Tropical Medicine and Hygiene · 2025
    Article
  7. Article
  8. Role of Divalent Cations in Infections in Host-Pathogen Interaction.International journal of molecular sciences · 2024
    Review
  9. The Vicious Cycle of Malnutrition and Tuberculosis: A Narrative Review.Journal of clinical practice and research · 2024
    Review
  10. Article
  11. Article
  12. Effects of deferoxamine on intrinsic colistin resistance ofExperimental and therapeutic medicine · 2023
    Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Frontiers in immunology · 2022
    Article
  19. Article
  20. 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

8 authors at 2 institutions in 2 countries.

Sheila IsanakaDepartment of Nutrition, Harvard School of Public Health, Boston, Massachusetts, United States of America. sisanaka@hsph.harvard.edu
Said Aboud
Ferdinand Mugusi
Ronald J Bosch
Walter C Willett
Donna Spiegelman
Christopher Duggan
Wafaie W Fawzi
Harvard University · USMuhimbili University of Health and Allied Sciences · TZ

Funding

ROLE OF DIETARY CONSTITUENTS ON GENE EXPRESSION IN INTESTINAL EPITHELIUMP30DK040561 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI Elizabeth Austen Lawson, Takara Leah Stanley · 1994 to 2026
$31.6M
NUTRITION, IMMUNOLOGY, AND EPIDEMIOLOGY OF TUBERCULOSISU01AI045441 · NIAID · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI FAWZI, WAFAIE W · 1999 to 2004
$2.0M
Patient-oriented Research in Pediatric Diarrheal DiseasesK24HD058795 · NICHD · BOSTON CHILDREN'S HOSPITAL · PI DUGGAN, CHRISTOPHER P · 2010 to 2014
$956k
NIAID NIH HHS U01 AI045441NIAID NIH HHS U01AI045441NICHD NIH HHS 1K24HD058795NICHD NIH HHS K24 HD058795NIDDK NIH HHS P30 DK040561
6 · The paper itself

Abstract

backgroundExperimental data suggest a role for iron in the course of tuberculosis (TB) infection, but there is limited evidence on the potential effects of iron deficiency or iron overload on the progression of TB disease in humans. The aim of the present analysis was to examine the association of iron status with the risk of TB progression and death. METHODOLOGY/PRINCIPAL

findingsWe analyzed plasma samples and data collected as part a randomized micronutrient supplementation trial (not including iron) among HIV-infected and HIV-uninfected TB patients in Dar es Salaam, Tanzania. We prospectively related baseline plasma ferritin concentrations from 705 subjects (362 HIV-infected and 343 HIV-uninfected) to the risk of treatment failure at one month after initiation, TB recurrence and death using binomial and Cox regression analyses. Overall, low (plasma ferritin<30 µg/L) and high (plasma ferritin>150 µg/L for women and>200 µg/L for men) iron status were seen in 9% and 48% of patients, respectively. Compared with normal levels, low plasma ferritin predicted an independent increased risk of treatment failure overall (adjusted RR = 1.95, 95% CI: 1.07 to 3.52) and of TB recurrence among HIV-infected patients (adjusted RR = 4.21, 95% CI: 1.22 to 14.55). High plasma ferritin, independent of C-reactive protein concentrations, was associated with an increased risk of overall mortality (adjusted RR = 3.02, 95% CI: 1.95 to 4.67). CONCLUSIONS/SIGNIFICANCE: Both iron deficiency and overload exist in TB patients and may contribute to disease progression and poor clinical outcomes. Strategies to maintain normal iron status in TB patients could be helpful to reduce TB morbidity and mortality.

Indexed as

AdultCohort StudiesFemaleFerritinsHIV InfectionsHumansIronIron DeficienciesIron OverloadMaleMicronutrientsProspective StudiesTanzaniaTreatment FailureTuberculosis, PulmonaryYoung AdultFerritinsIronMicronutrients

Identifiers

PMID22606361
PMCPMC3350480
OpenAlexW1995996219

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.