Evidence map›Paper›PMID 7535316›Full record

ArticleJournal of clinical microbiology1995

Clinical evaluation of a Mycobacterium tuberculosis PCR assay.

J Beige, J Lokies, T Schaberg, U Finckh, M Fischer, H Mauch, H Lode, B Köhler, A Rolfs

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Journal of clinical microbiology, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 2 pooled it
7.8field-weighted citation impact, top 2% 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

38 citing papers in PubMed, 2 syntheses or guidelines pooled it, 125 citations in OpenAlex.

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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

9 authors at 1 institution in 1 country.

J BeigeNeurochemical Research Laboratory, Klinikum Steglitz, Free University of Berlin, Germany.
J Lokies
T Schaberg
U Finckh
M Fischer
H Mauch
H Lode
B Köhler
A Rolfs
Freie Universität Berlin · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

On the basis of previously published PCR primer sequences, we have designed a sensitive system for detecting DNA of the Mycobacterium tuberculosis complex (MTB) in patient sputum samples which employs a fast and simplified sample preparation method appropriate for routine diagnostic testing. In order to evaluate the accuracy of the PCR assay, we performed a prospective study with 103 patients, comparing PCR results with culture results of samples obtained from a parallel culture assay as well as with subsequent culture results. Using two MTB-specific PCR primer systems, we found 48 of 49 tuberculosis (Tb) patients to be PCR positive (PCR sensitivity, 0.98). Sixteen of 54 presumably non-Tb patients showed amplifiable MTB DNA (specificity, 0.7). The study demonstrates that for diagnostic applications of MTB PCR two MTB-specific primer pairs should be used. MTB infection is extremely unlikely in cases of MTB PCR-negative samples: with our method for the exclusion of active Tb, the validity of one PCR assay seems to be equivalent to those of at least three culturing procedures. Positive PCR results do not necessarily reflect active MTB infection. It remains to be shown whether positive PCR results in Tb-negative patients mean false-positivity, an early laboratory finding which predicts a subsequent reactivation of a prior Tb infection, or whether asymptomatic patients may carry PCR-amplifiable MTB DNA without any clinical relevance. It is important to point out that the validity of PCR results in clinical studies depends on the use of contamination controls parallel to all PCR steps and the simplicity of the DNA extraction method as well as on the specificity of the PCR results.

Indexed as

Base SequenceDNA, BacterialEvaluation Studies as TopicFalse Positive ReactionsHumansMolecular Sequence DataMycobacterium tuberculosisPolymerase Chain ReactionProspective StudiesReproducibility of ResultsSensitivity and SpecificitySputumStaining and LabelingTuberculin TestTuberculosis, PulmonaryDNA, Bacterial

Identifiers

PMID7535316
PMCPMC227886
OpenAlexW1628835506

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.