Evidence map›Paper›PMID 9588895›Full record

ArticleThe American journal of pathology1998

B-cell monoclonality precedes the development of gastric MALT lymphoma in Helicobacter pylori-associated chronic gastritis.

S Nakamura, K Aoyagi, M Furuse, H Suekane, T Matsumoto, T Yao, Y Sakai, T Fuchigami, I Yamamoto, M Tsuneyoshi and 1 more

Abstract readComparative Study
In one paragraph

Article in The American journal of pathology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
12.0field-weighted citation impact, top 1% 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

25 citing papers in PubMed, 107 citations in OpenAlex.

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  16. Molecular pathology of primary intraocular lymphoma.Transactions of the American Ophthalmological Society · 2003
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  17. Review
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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

11 authors at 1 institution in 1 country.

S NakamuraSecond Department of Internal Medicine, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
K Aoyagi
M Furuse
H Suekane
T Matsumoto
T Yao
Y Sakai
T Fuchigami
I Yamamoto
M Tsuneyoshi
M Fujishima
Kyushu University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Little is known about the temporal changes in Helicobacter pylori density and B-cell clonality during the evolution from chronic gastritis to gastric mucosa-associated lymphoid tissue (MALT) lymphoma. Biopsied specimens from 28 patients with chronic gastritis who developed gastric MALT lymphoma (group A) and from 24 similar patients who did not (group B) during an equivalent follow-up period (mean, 42 months) were retrospectively scored for histological features of MALT lymphoma (0 to 5) and H. pylori density (0 to 3). B-cell clonality was analyzed by polymerase chain reaction (PCR). During the observation period, the H. pylori density in group A decreased significantly in comparison with group B; the mean change in H. pylori density (final minus initial density) per 1000 days was -1.4 for group A and +0.2 for group B (P < 0.005). Monoclonality was detected more frequently in group A (79%) than in group B (21%; P < 0.005), and it preceded the histological evidence of malignant transformation in 64% of those patients who showed monoclonality in group A. These results suggest that H. pylori is thus more closely associated with the precursor or initial phase in the genesis of gastric MALT lymphoma than with the later phase, as its density decreases as the tumor progresses. The detection of B-cell monoclonality by PCR is thus of possible use for predicting the histological genesis of gastric lymphoma.

Indexed as

AdolescentAdultAgedB-LymphocytesChronic DiseaseFemaleGastritisGene Rearrangement, B-Lymphocyte, Heavy ChainGenes, ImmunoglobulinHelicobacter InfectionsHelicobacter pyloriHumansImmunoglobulin Heavy ChainsLymphoma, B-Cell, Marginal ZoneMaleMiddle AgedImmunoglobulin Heavy Chains

Identifiers

PMID9588895
PMCPMC1858568
OpenAlexW1811778638

What OpenQuestion holds

Textmetadata
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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.