Evidence map›Paper›PMID 31039137›Full record

Trial reportThe Journal of clinical investigation2019

Elevation in plasma tRNA fragments precede seizures in human epilepsy.

Marion C Hogg, Rana Raoof, Hany El Naggar, Naser Monsefi, Norman Delanty, Donncha F O'Brien, Sebastian Bauer, Felix Rosenow, David C Henshall, Jochen Hm Prehn

Open access · bronzeAbstract readClinical TrialMulticenter Study
In one paragraph

Trial report in The Journal of clinical investigation, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed
5.3field-weighted citation impact, top 3% 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

66 citing papers in PubMed, 103 citations in OpenAlex.

  1. Article
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  5. Dissecting the small RNA code of inflammatory bowel disease.Molecular medicine (Cambridge, Mass.) · 2026
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  13. Emerging roles of transfer RNA fragments in the CNS.Brain : a journal of neurology · 2025
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6 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

10 authors at 4 institutions in 4 countries.

Marion C HoggDepartment of Physiology and Medical Physics, Royal College of Surgeons in Ireland, St. Stephen's Green, Dublin, Ireland.
Rana RaoofDepartment of Physiology and Medical Physics, Royal College of Surgeons in Ireland, St. Stephen's Green, Dublin, Ireland.
Hany El NaggarDepartment of Physiology and Medical Physics, Royal College of Surgeons in Ireland, St. Stephen's Green, Dublin, Ireland.
Naser MonsefiDepartment of Physiology and Medical Physics, Royal College of Surgeons in Ireland, St. Stephen's Green, Dublin, Ireland.
Norman DelantyFutureNeuro Research Centre, Royal College of Surgeons in Ireland, St. Stephen's Green, Dublin, Ireland.
Donncha F O'BrienDepartment of Neurosurgery, Beaumont Hospital, Dublin, Ireland.
Sebastian BauerEpilepsy Center Hessen, Department of Neurology, Marburg, Germany.
Felix RosenowEpilepsy Center Hessen, Department of Neurology, Marburg, Germany.
David C HenshallDepartment of Physiology and Medical Physics, Royal College of Surgeons in Ireland, St. Stephen's Green, Dublin, Ireland.
Jochen Hm PrehnDepartment of Physiology and Medical Physics, Royal College of Surgeons in Ireland, St. Stephen's Green, Dublin, Ireland.
Royal College of Surgeons in Ireland · IEGoethe University Frankfurt · DEBeaumont Hospital · IEUniversity of Mosul · IQ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Transfer RNAs (tRNAs) are a major class of noncoding RNA. Stress-induced cleavage of tRNA is highly conserved and results in tRNA fragments. Here we find specific tRNA fragments in plasma are associated with epilepsy. Small RNA sequencing of plasma samples collected during video-EEG monitoring of focal epilepsy patients identified significant differences in three tRNA fragments (5', 5'AlaTGC, and 5'GluCTC) from controls. Levels of these tRNA fragments were higher in pre-seizure than post-seizure samples, suggesting they may serve as biomarkers of seizure risk in epilepsy patients. In vitro studies confirmed that production and extracellular release of tRNA fragments was lower after epileptiform-like activity in hippocampal neurons. We designed PCR-based assays to quantify tRNA fragments in a cohort of pre- and post-seizure plasma samples from focal epilepsy patients and healthy controls (n = 32/group). Receiver operating characteristic analysis indicated that tRNA fragments potently distinguished pre- from post-seizure patients (area under the curve of 0.8-0.95). Elevated tRNA fragments levels were not detected in patients with psychogenic non-epileptic seizures, and did not result from medication tapering. This study identifies a novel class of epilepsy biomarker and reveals the potential existence of prodromal molecular patterns in blood that could be used to predict seizure risk.

Indexed as

AdultBiomarkersCell-Free Nucleic AcidsElectroencephalographyEpilepsies, PartialFemaleHumansMalePolymerase Chain ReactionRNA, TransferBiomarkersCell-Free Nucleic AcidsRNA, TransferEpilepsyNeuroscienceNoncoding RNAsSeizures

Identifiers

PMID31039137
PMCPMC6597227
OpenAlexW2943807724

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.