Evidence map›Paper›PMID 30170628›Full record

ArticleVirology journal2018

A loop-mediated isothermal amplification assay for the detection and quantification of JC polyomavirus in cerebrospinal fluid: a diagnostic and clinical management tool and technique for progressive multifocal leukoencephalopathy.

Hitomi Kinoshita, Kazuo Nakamichi, Chang-Kweng Lim, Mutsuyo Takayama-Ito, Lixin Wang, Itoe Iizuka, Ichiro Kurane, Masayuki Saijo

Erratum issuedOpen access · goldAbstract readComparative StudyEvaluation Study
In one paragraph

Article in Virology journal, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.6field-weighted citation impact, top 29% 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

4 citing papers in PubMed, 8 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 2 institutions in 2 countries.

Hitomi KinoshitaDepartment of Virology 1, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, 162-8640, Japan.
Kazuo NakamichiDepartment of Virology 1, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, 162-8640, Japan.
Chang-Kweng LimDepartment of Virology 1, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, 162-8640, Japan.
Mutsuyo Takayama-ItoDepartment of Virology 1, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, 162-8640, Japan.
Lixin WangDepartment of Virology 1, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, 162-8640, Japan.
Itoe IizukaDepartment of Virology 1, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, 162-8640, Japan.
Ichiro KuraneDepartment of Virology 1, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, 162-8640, Japan.
Masayuki SaijoDepartment of Virology 1, National Institute of Infectious Diseases, Shinjuku-ku, Tokyo, 162-8640, Japan. msaijo@nih.go.jp.
National Institute of Infectious Diseases · JPHainan Medical University · CN

Funding

JSPS KAKENHI 17K09768the Ministry of Health, Labour and Welfare of Japan H21-Shinko-Ippan-009the Ministry of Health, Labour and Welfare of Japan H29-Nanchitou-Nan-Ippan-036
6 · The paper itself

Abstract

backgroundJC polyomavirus (JCV) is the causative agent of progressive multifocal leukoencephalopathy (PML), a demyelinating disease of the central nervous system in immunosuppressed patients. PML usually has a poor prognosis. Detection and quantification of the JCV genome in cerebrospinal fluid (CSF) is an efficacious tool for the diagnosis and management of PML, for which proper therapeutic interventions are required.

methodsA loop-mediated isothermal amplification (LAMP) assay was applied for the quantitative detection of JCV. The LAMP assay was evaluated for the efficacy in diagnosis of PML in comparison with the TaqMan-based quantitative real-time PCR (qPCR) assay using 153 CSF specimens collected from patients with suspected PML.

resultsThe LAMP assay showed no cross-reactivity against other polyomavirus plasmids, viral DNA, and viral RNA, which causes encephalitis, and detected 1 copy of the standard DNA per reaction. Among 50 qPCR-positives, 42 specimens (containing JCV genome ranged from 3.2 × 10

conclusionsThe newly developed LAMP assay is highly specific against JCV and detect the JCV genome in the sample DNA containing 20 or more copies of JCV genome per reaction with 100% sensitivity (n = 29), which corresponds to ≥3 × 10

Indexed as

Cerebrospinal FluidHumansJC VirusLeukoencephalopathy, Progressive MultifocalMolecular Diagnostic TechniquesNucleic Acid Amplification TechniquesPredictive Value of TestsSensitivity and SpecificityDetectionJC polyomavirusLAMPPMLQuantification

Identifiers

PMID30170628
PMCPMC6119251
OpenAlexW2889381931

What OpenQuestion holds

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Registered trials

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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.