Evidence map›Paper›PMID 21123529›Full record

ArticleJournal of clinical microbiology2011

Multiplex real-time PCR assay for detection and classification of Klebsiella pneumoniae carbapenemase gene (bla KPC) variants.

Liang Chen, José R Mediavilla, Andrea Endimiani, Marnie E Rosenthal, Yanan Zhao, Robert A Bonomo, Barry N Kreiswirth

Open access · greenAbstract read
In one paragraph

Article in Journal of clinical microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 70 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
70citing papers in PubMed, 1 pooled it
3.6field-weighted citation impact, top 6% 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

70 citing papers in PubMed, 1 synthesis or guideline pooled it, 118 citations in OpenAlex.

  1. Pooled it
  2. Epidemiology and molecular characterization of bacteremia due to carbapenem-resistant Klebsiella pneumoniae in transplant recipients.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2013
    Trial
  3. Article
  4. Article
  5. Molecular analysis ofOpen veterinary journal · 2025
    Article
  6. Article
  7. Rapid quantitative detection ofFrontiers in bioengineering and biotechnology · 2023
    Article
  8. Article
  9. Article
  10. Article
  11. A Recombinase Aided Amplification Assay for Rapid Detection of theFrontiers in cellular and infection microbiology · 2021
    Article
  12. Frontiers in microbiology · 2021
    Article
  13. Article
  14. Article
  15. Frontiers in microbiology · 2020
    Article
  16. Article
  17. Effects of KPC Variant and Porin Genotype on theAntimicrobial agents and chemotherapy · 2019
    Article
  18. Emergence of OXA-48 Carbapenemase ProducingClinical medicine insights. Pediatrics · 2019
    Article
  19. Article
  20. Article

10 more citing papers are in PubMed but not listed here.

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

7 authors at 3 institutions in 1 country.

Liang ChenPublic Health Research Institute Tuberculosis Center, International Center for Public Health, University of Medicine and Dentistry of New Jersey, Newark, New Jersey 07103, USA.
José R Mediavilla
Andrea Endimiani
Marnie E Rosenthal
Yanan Zhao
Robert A Bonomo
Barry N Kreiswirth
International Center for Public Health · USCase Western Reserve University · USLouis Stokes Cleveland VA Medical Center · US

Funding

PHS HHS R01 A1063517-01
6 · The paper itself

Abstract

Carbapenem resistance mediated by plasmid-borne Klebsiella pneumoniae carbapenemases (KPC) is an emerging problem of significant clinical importance in Gram-negative bacteria. Multiple KPC gene variants (bla(KPC)) have been reported, with KPC-2 (bla(KPC-2)) and KPC-3 (bla(KPC-3)) associated with epidemic outbreaks in New York City and various international settings. Here, we describe the development of a multiplex real-time PCR assay using molecular beacons (MB-PCR) for rapid and accurate identification of bla(KPC) variants. The assay consists of six molecular beacons and two oligonucleotide primer pairs, allowing for detection and classification of all currently described bla(KPC) variants (bla(KPC-2) to bla(KPC-11)). The MB-PCR detection limit was 5 to 40 DNA copies per reaction and 4 CFU per reaction using laboratory-prepared samples. The MB-PCR probes were highly specific for each bla(KPC) variant, and cross-reactivity was not observed using DNA isolated from several bacterial species. A total of 457 clinical Gram-negative isolates were successfully characterized by our MB-PCR assay, with bla(KPC-3) and bla(KPC-2) identified as the most common types in the New York/New Jersey metropolitan region. The MB-PCR assay described herein is rapid, sensitive, and specific and should be useful for understanding the ongoing evolution of carbapenem resistance in Gram-negative bacteria. As novel bla(KPC) variants continue to emerge, the MB-PCR assay can be modified in response to epidemiologic developments.

Indexed as

Bacterial ProteinsBacteriological Techniquesbeta-LactamasesCross ReactionsDNA PrimersGram-Negative BacteriaGram-Negative Bacterial InfectionsHumansNew JerseyNew York CityOligonucleotide ProbesPolymerase Chain ReactionSensitivity and SpecificityBacterial Proteinsbeta-LactamasescarbapenemaseDNA PrimersOligonucleotide Probes

Identifiers

PMID21123529
PMCPMC3043520
OpenAlexW2170314830

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.