Evidence map›Paper›PMID 26126706›Full record

Observational studyBMC infectious diseases2015

Combining standard clinical methods with PCR showed improved diagnosis of invasive pulmonary aspergillosis in patients with hematological malignancies and prolonged neutropenia.

Melinda Paholcsek, Gabor Fidler, Jozsef Konya, Laszlo Rejto, Gabor Mehes, Evelin Bukta, Juergen Loeffler, Sandor Biro

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in BMC infectious diseases, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 3 pooled it
1.4field-weighted citation impact, top 21% 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

5 citing papers in PubMed, 3 syntheses or guidelines pooled it, 13 citations in OpenAlex.

  1. Pooled it
  2. Guideline
  3. Pooled it
  4. Review
  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

8 authors at 2 institutions in 2 countries.

Melinda PaholcsekFaculty of Medicine, Department of Human Genetics, University of Debrecen, Nagyerdei krt. 98, H-4032, Debrecen, Hungary. paholcsek.melinda@med.unideb.hu.
Gabor FidlerFaculty of Medicine, Department of Human Genetics, University of Debrecen, Nagyerdei krt. 98, H-4032, Debrecen, Hungary. fidler.gabor@med.unideb.hu.
Jozsef KonyaFaculty of Medicine, Department of Medical Microbiology, University of Debrecen, Debrecen, Hungary. konya@med.unideb.hu.
Laszlo RejtoFaculty of Medicine, Institute of Internal Medicine, University of Debrecen, Debrecen, Hungary. lrejto@med.unideb.hu.
Gabor MehesFaculty of Medicine, Institute of Pathology, University of Debrecen, Debrecen, Hungary. gabor.mehes@med.unideb.hu.
Evelin BuktaFaculty of Medicine, Department of Medical Microbiology, University of Debrecen, Debrecen, Hungary. evelin.mb@gmail.com.
Juergen LoefflerDepartment for Internal Medicine II, University of Wuerzburg Medical Centre, Wuerzburg, Germany. loeffler_j@medizin.uni-wuerzburg.de.
Sandor BiroFaculty of Medicine, Department of Human Genetics, University of Debrecen, Nagyerdei krt. 98, H-4032, Debrecen, Hungary. sbiro@med.unideb.hu.
University of Debrecen · HUUniversity of Würzburg · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWe assessed the diagnostic value of standard clinical methods and combined biomarker testing (galactomannan assay and polymerase chain reaction screening) in a prospective case-control study to detect invasive pulmonary aspergillosis in patients with hematological malignancies and prolonged neutropenia.

methodsIn this observational study 162 biomarker analyses were performed on samples from 27 febrile neutropenic episodes. Sera were successively screened for galactomannan antigen and for Aspergillus fumigatus specific nucleic acid targets. Furthermore thoracic computed tomography scanning was performed along with bronchoscopy with lavage when clinically indicated. Patients were retrospectively stratified to define a case-group with "proven" or "probable" invasive pulmonary aspergillosis (25.93 %) and a control-group of patients with no evidence for of invasive pulmonary aspergillosis (74.07 %). In 44.44 % of episodes fever ceased in response to antibiotic treatment (group II). Empirical antifungal therapy was administered for episodes with persistent or relapsing fever (group I). 48.15 % of patients died during the study period. Postmortem histology was pursued in 53.85 % of fatalities.

resultsConcordant negative galactomannan and computed tomography supported by a polymerase chain reaction assay were shown to have the highest discriminatory power to exclude invasive pulmonary aspergillosis. Bronchoalveolar lavage was performed in 6 cases of invasive pulmonary aspergillosis and in 15 controls. Although bronchoalveolar lavage proved negative in 93 % of controls it did not detect IPA in 86 % of the cases. Remarkably post mortem histology convincingly supported the presence of Aspergillus hyphae in lung tissue from a single case which had consecutive positive polymerase chain reaction assay results but was misdiagnosed by both computed tomography and consistently negative galactomannan assay results. For the galactomannan enzyme-immunoassay the diagnostic odds ratio was 15.33 and for the polymerase chain reaction assay it was 28.67. According to Cohen's kappa our in-house polymerase chain reaction method showed a fair agreement with the galactomannan immunoassay. Combined analysis of the results from the Aspergillus galactomannan enzyme immunoassay together with those generated by our polymerase chain reaction assay led to no misdiagnoses in the control group.

conclusionThe data from this pilot-study demonstrate that the consideration of standard clinical methods combined with biomarker testing improves the capacity to make early and more accurate diagnostic decisions.

Indexed as

AdolescentAdultAgedAntifungal AgentsAntigens, FungalAspergillus fumigatusCase-Control StudiesDNA, FungalFemaleGalactoseHematologic NeoplasmsHumansImmunoassayInvasive Pulmonary AspergillosisLungMaleAntifungal AgentsAntigens, FungalDNA, FungalgalactomannanGalactoseMannans

Identifiers

PMID26126706
PMCPMC4487853
OpenAlexW1520249831

What OpenQuestion holds

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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.