Evidence map›Paper›PMID 42010693›Full record

ArticleVirology journal2026

Detection of JC virus DNA in CSF of pediatric patients with non-PML neurological disorders.

Negar Hemmati, Amir Hossein Alipour, Bahman Abedi Kiasari

Abstract read
In one paragraph

Article in Virology journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

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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

2 citing papers in PubMed.

  1. Article
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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

3 authors.

Negar HemmatiDepartment of Microbiology and Immunology, University of Tehran, Tehran, Iran.ORCID http://orcid.org/0009-0005-2570-0972
Amir Hossein AlipourDepartment of Microbiology and Immunology, University of Tehran, Tehran, Iran.ORCID http://orcid.org/0000-0002-4906-6903
Bahman Abedi KiasariDepartment of Microbiology and Immunology, University of Tehran, Tehran, Iran. abedikiasari.b@ut.ac.ir.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundJC virus (JCV) is a human polyomavirus classically associated with progressive multifocal leukoencephalopathy (PML). Its role in other central nervous system (CNS) disorders - and the contribution of related polyomaviruses such as BK virus (BKV) and simian virus 40 (SV40) - remains poorly defined in pediatric populations, especially among immunocompromised patients.

methodsWe analysed 64 cerebrospinal fluid (CSF) specimens collected from children evaluated for suspected viral encephalitis or meningoencephalitis between March and October 2024. Broad-range and virus-specific PCR assays targeting conserved regions of the large T antigen (LT-ag) and VP1 genes were performed. Positive amplicons were confirmed by bidirectional Sanger sequencing and phylogenetic analysis. Associations with HIV status were assessed using chi-square tests.

resultsJCV DNA was detected in 4 of 64 samples (4/64; 6.3%), BKV DNA in 5 of 64 samples (5/64; 7.8%), and both viruses were co-detected in 3 samples (3/64; 4.7%). All positive detections occurred in HIV-positive patients (JCV: 4/19 HIV+; BKV: 5/19 HIV+), yielding statistically significant associations with HIV status (JCV p = 0.006; BKV p = 0.002). No SV40 DNA was identified. Phylogenetic reconstruction grouped patient sequences tightly with reference JCV and BKV strains, supporting authentic detection rather than laboratory contamination.

conclusionsThese results provide molecular evidence that JCV and BKV can be detected in the CSF of pediatric patients with suspected CNS infection - predominantly in the setting of HIV-associated immunosuppression - and may represent underrecognized contributors to non-PML neurological disease. Larger, longitudinal studies integrating clinical, radiological and quantitative viral-load data are required to define causality and clinical impact.

Indexed as

DNA, ViralEncephalitis, ViralJC VirusPolyomavirus InfectionsAdolescentAntigens, Viral, TumorBK VirusChildChild, PreschoolFemaleHIV InfectionsHumansInfantMaleMeningoencephalitisPhylogenyAntigens, Viral, TumorDNA, ViralBK polyomavirusCerebrospinal fluidHIVJC polyomavirusPCRPediatric encephalitisPhylogeneticsSV40

Identifiers

PMID42010693
PMCPMC13270694

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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.