Evidence map›Paper›PMID 42004686›Full record

ArticleThe journal of liquid biopsy2026

Plasma histone monomers as novel diagnostic markers in adult glioblastoma.

Desislava K Tsoneva, Diana Buzova, Stefani Mariyanova Todorova, Yavor Enchev, Jan Frohlich, George N Chaldakov, Anton B Tonchev, Jan Cerveny, Manlio Vinciguerra

Abstract read
In one paragraph

Article in The journal of liquid biopsy, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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.

Desislava K TsonevaDepartment of Medical Genetics, Medical University of Varna, Varna, Bulgaria.
Diana BuzovaDepartment of Adaptive Biotechnologies, Global Change Research Institute CAS, Brno, Czech Republic.
Stefani Mariyanova TodorovaDepartment of Neurosurgery and ENT, Medical University Varna, Varna, Bulgaria.
Yavor EnchevDepartment of Neurosurgery and ENT, Medical University Varna, Varna, Bulgaria.
Jan FrohlichInternational Clinical Research Center, St Anne's University Hospital, Brno, Czech Republic.
George N ChaldakovDepartment of Anatomy and Cell Biology, Research Institute of the Medical University of Varna, Varna, Bulgaria.
Anton B TonchevDepartment of Stem Cell Biology and Transplantology, Research Institute of the Medical University of Varna, Varna, Bulgaria.
Jan CervenyDepartment of Adaptive Biotechnologies, Global Change Research Institute CAS, Brno, Czech Republic.
Manlio VinciguerraDepartment of Stem Cell Biology and Transplantology, Research Institute of the Medical University of Varna, Varna, Bulgaria.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background: Glioblastoma (GB), the most aggressive primary brain tumor in adults, has a median survival of 12-18 months and lacks reliable minimally invasive biomarkers. Traditional diagnostics are limited by invasiveness and the inability to capture dynamic tumor changes. Circulating histones, reflecting tumor burden and epigenetic alterations, have emerged as potential liquid biopsy markers, but studies in adult GB are scarce compared to pediatric gliomas. The aim of this study was to characterize the plasma histone profile in adult GB patients versus healthy controls and evaluate its diagnostic potential. Methods: Plasma samples from 44 adult GB patients and 30 age-matched healthy controls were analyzed. Plasma levels of histones H3.1 and H3.3 were quantified by ELISA. Individual histones (H2A, H2B, H3, H4, macroH2A1.1, macroH2A1.2) and histone complexes (dimers/tetramers) were measured using an established imaging flow cytometry (ImageStreamX) multichannel detection approach. Results: GB patients exhibited significantly elevated plasma levels of individual histone monomers H2A, H3, macroH2A1.1, and macroH2A1.2, as well as markedly reduced H4 levels, compared to controls. Levels of histones H3.1- and H3.3 detected in plasma, showed no significant differences. MacroH2A1.2 levels negatively correlated with age in males. Conclusions: Adult GB displays a distinct circulating histone signature dominated by elevated free monomers rather than nucleosome complexes, contrasting with pediatric gliomas. These findings provide proof of concept for plasma histone monomers as novel minimally invasive diagnostic biomarkers in adult glioblastoma.

Indexed as

EpigeneticsGlioblastomahistonesImaging flow cytometryLiquid biopsy

Identifiers

PMID42004686
PMCPMC13090717

What Socratic holds

Textmetadata
LicenceCC BY
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 Socratic graph.