Evidence map›Paper›PMID 22113815›Full record

ArticleIntensive care medicine2012

Variants at the promoter of the interleukin-6 gene are associated with severity and outcome of pneumococcal community-acquired pneumonia.

Ignacio Martín-Loeches, Jordi Solé-Violán, Felipe Rodríguez de Castro, M Isabel García-Laorden, Luis Borderías, José Blanquer, Olga Rajas, M Luisa Briones, Javier Aspa, Estefanía Herrera-Ramos and 6 more

Abstract read
PubMed Publisher
In one paragraph

Article in Intensive care medicine, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 8 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

37 citing papers in PubMed, 8 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Pooled it
  6. Pooled it
  7. Pooled it
  8. Pooled it
  9. Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Review
  19. Review
  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

16 authors.

Ignacio Martín-LoechesCritical Care Centre, Corporació Sanitaria Parc Tauli-University Hospital Sabadell, Sabadell, Spain.
Jordi Solé-Violán
Felipe Rodríguez de Castro
M Isabel García-Laorden
Luis Borderías
José Blanquer
Olga Rajas
M Luisa Briones
Javier Aspa
Estefanía Herrera-Ramos
José Alberto Marcos-Ramos
Ithaisa Sologuren
Nereida González-Quevedo
José María Ferrer-Agüero
Judith Noda
Carlos Rodríguez-Gallego

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeConflicting results about the role of genetic variability at IL6, particularly the -174 G/C single nucleotide polymorphism (SNP), in sepsis have been reported. We studied the genetic variability at IL6 in patients with community-acquired pneumonia (CAP) and pneumococcal CAP (P-CAP).

methodsThis was a multicenter, prospective observational study. IL6 -174 was analyzed in 1,227 white Spanish patients with CAP (306 with P-CAP). IL6 1753 C/G (N = 750), 2954 G/C (N = 845), and haplotypes defined by these SNPs were also studied.

resultsIn CAP patients the genotype -174 GG were associated with protection against acute respiratory distress syndrome (ARDS) (p = 0.008, OR = 0.4, 95% CI 0.2-0.8). No other significant associations were observed. However, in patients with P-CAP multivariate analysis adjusted for age, gender, co-morbidity, hospital of origin, and severity (pneumonia severity index, PSI) showed that the IL6 -174 GG genotype was protective against the development of ARDS (p = 0.002, OR = 0.25, 95% CI 0.07-0.79), septic shock (p = 0.006, OR = 0.46, 95% CI 0.18-0.79), and multiple organ dysfunction syndrome (p = 0.02, OR = 0.53, 95% CI 0.27-0.89). P-CAP patients homozygous for IL6 -174 G also showed a higher survival in a logistic regression analysis adjusted for age, gender, co-morbidity, hospital of origin, and PSI (p = 0.048, OR = 0.27, 95% CI 0.07-0.98).

conclusionsOur results indicate that the IL-6 -174 GG genotype is associated with lower severity and mortality in patients with P-CAP. This effect was higher than that observed in patients with CAP irrespective of the causal pathogen involved. Our results highlight the importance of the causal pathogen in genetic epidemiological studies in sepsis.

Indexed as

Community-Acquired InfectionsFemaleHospital MortalityHumansInterleukin-6MaleMiddle AgedPneumonia, PneumococcalPolymorphism, GeneticPromoter Regions, GeneticProspective StudiesSeverity of Illness IndexInterleukin-6

Identifiers

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.