Evidence map›Paper›PMID 19387466›Full record

ArticleLeukemia2009

Involvement of mast cells by the malignant process in patients with Philadelphia chromosome negative myeloproliferative neoplasms.

J Wang, T Ishii, W Zhang, S Sozer, Y Dai, J Mascarenhas, V Najfeld, Z J Zhao, R Hoffman, N Wisch and 1 more

Abstract read
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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 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.0field-weighted citation impact, top 23% 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

7 citing papers in PubMed, 17 citations in OpenAlex.

  1. Increased Mast Cell Numbers in Bone Marrow of Patients with Myeloproliferative Neoplasms and PruritusTurkish journal of haematology : official journal of Turkish Society of Haematology · 2026
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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 5 institutions in 3 countries.

J WangDivision of Hematology/Oncology, Department of Medicine, Tisch Cancer Institute, New York, NY 10029-6574, USA.
T Ishii
W Zhang
S Sozer
Y Dai
J Mascarenhas
V Najfeld
Z J Zhao
R Hoffman
N Wisch
M Xu
Cancer Institute (WIA) · INTisch Cancer InstituteTisch Hospital · USJilin University · CNUniversity of Oklahoma · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Philadelphia chromosome negative myeloproliferative neoplasms (MPNs) are clonal hematologic malignancies frequently characterized by a mutation in JAK2 (JAK2V617F). Peripheral blood (PB) CD34(+) cells from patients with polycythemia vera (PV) and primary myelofibrosis (PMF) generated in vitro significantly fewer mast cells (MCs) than normal PB CD34(+) cells. The numbers of MC progenitors assayed from MPN CD34(+) cells were, however, similar to that assayed from normal CD34(+) cells. A higher percentage of the cultured MPN MCs expressed FcvarepsilonRIalpha, CD63 and CD69 than normal MCs, suggesting that cultured MPN MCs are associated with an increased state of MC activation. Further analysis showed that a higher proportion of cultured PV and PMF MCs underwent apoptosis in vitro. By using JAK2V617F, MplW515L and chromosomal abnormalities as clonality markers, we showed that the malignant process involved MPN MCs. JAK2V617F-positive MC colonies were assayable from the PB CD34(+) cells of each of the 17 JAK2V617F positive MPN patients studied. Furthermore, erlotinib, a JAK2 inhibitor, was able to inhibit JAK2V617F-positive PV MC progenitor cells, indicating that malignant MC progenitor cells are a potential cellular target for such JAK2 inhibitor-directed therapy.

Indexed as

Antigens, CD34Cells, CulturedErlotinib HydrochlorideHumansJanus Kinase 2Mast CellsMutationPolycythemia VeraPrimary MyelofibrosisQuinazolinesReceptors, ThrombopoietinThrombocythemia, EssentialAntigens, CD34Erlotinib HydrochlorideJAK2 protein, humanJanus Kinase 2MPL protein, humanQuinazolinesReceptors, Thrombopoietin

Identifiers

PMID19387466
OpenAlexW2035609090

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.