Evidence map›Paper›PMID 19148139›Full record

ArticleLeukemia2009

Molecular evidence for EBV and CMV persistence in a subset of patients with chronic lymphocytic leukemia expressing stereotyped IGHV4-34 B-cell receptors.

E Kostareli, A Hadzidimitriou, N Stavroyianni, N Darzentas, A Athanasiadou, M Gounari, V Bikos, A Agathagelidis, T Touloumenidou, I Zorbas and 6 more

Open access · greenAbstract readComparative Study
PubMed Publisher
In one paragraph

Article in Leukemia, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 1 pooled it
4.6field-weighted citation impact, top 5% 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

41 citing papers in PubMed, 1 synthesis or guideline pooled it, 91 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

16 authors at 4 institutions in 1 country.

E KostareliSchool of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece.
A Hadzidimitriou
N Stavroyianni
N Darzentas
A Athanasiadou
M Gounari
V Bikos
A Agathagelidis
T Touloumenidou
I Zorbas
A Kouvatsi
N Laoutaris
A Fassas
A Anagnostopoulos
C Belessi
K Stamatopoulos
G. Papanikolaou General Hospital · GRAristotle University of Thessaloniki · GRCentre for Research and Technology Hellas · GRGeneral Hospital of Nikea · GR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The chronic lymphocytic leukemia (CLL) immunoglobulin repertoire is uniquely characterized by the presence of stereotyped B-cell receptors (BCRs). A major BCR stereotype in CLL is shared by immunoglobulin G-switched cases utilizing the immunoglobulin heavy-chain variable 4-34 (IGHV4-34) gene. Increased titers of IGHV4-34 antibodies are detected in selective clinical conditions, including infection by B-cell lymphotropic viruses, particularly Epstein-Barr virus (EBV) and cytomegalovirus (CMV). In this context, we sought evidence for persistent activation by EBV and CMV in CLL cases expressing the IGHV4-34 gene. The study group included 93 CLL cases with an intentional bias for the IGHV4-34 gene. On the basis of real-time PCR results for CMV/EBV DNA, cases were assigned to three groups: (1) double-negative (59/93); (2) single-positive (CMV- or EBV-positive; 25/93); (3) double-positive (9/93). The double-negative group was characterized by heterogeneous IGHV gene repertoire. In contrast, a bias for the IGHV4-34 gene was observed in the single-positive group (9/25 cases; 36%). Remarkably, all nine double-positive cases utilized the IGHV4-34 gene; seven of nine cases expressed the major BCR stereotype as described above. In conclusion, our findings indicate that the interactions of CLL progenitor cells expressing distinctive IGHV4-34 BCRs with viral antigens/superantigens might facilitate clonal expansion and, eventually, leukemic transformation. The exact type, timing and location of these interactions remain to be determined.

Indexed as

AgedB-LymphocytesCase-Control StudiesCohort StudiesCytomegalovirusDisease ProgressionFemaleGenome, ViralHerpesvirus 4, HumanHumansImmunoglobulin Heavy ChainsImmunoglobulin Variable RegionLeukemia, Lymphocytic, Chronic, B-CellMaleMiddle AgedReceptors, Antigen, B-CellImmunoglobulin Heavy ChainsImmunoglobulin Variable RegionReceptors, Antigen, B-Cell

Identifiers

PMID19148139
OpenAlexW1973690024

What OpenQuestion holds

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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.