Evidence map›Paper›PMID 31928530›Full record

Trial reportJournal of experimental & clinical cancer research : CR2020

Complement C3 overexpression activates JAK2/STAT3 pathway and correlates with gastric cancer progression.

Kaitao Yuan, Jinning Ye, Zhenguo Liu, Yufeng Ren, Weiling He, Jianbo Xu, Yulong He, Yujie Yuan

Registry-linked trialOpen access · goldAbstract readClinical Trial
In one paragraph

Trial report in Journal of experimental & clinical cancer research : CR, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02425930 (The Relationship Between Complement C3 Depletion and Metastatic Gastric Cancer), which is not on this map. Cited by 74 papers.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed
11.7field-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.

NCT02425930 completednot on this map

The Relationship Between Complement C3 Depletion and Metastatic Gastric Cancer: A Prospective Pilot Study

TypeobservationalSponsorFirst Affiliated Hospital, Sun Yat-Sen UniversityRan2013 to 2015Enrolled85ConditionsGastric Cancer, Complement Component Deficiency, SurgeryArmsgastrectomy plus D2 lymphadenectomy, S-1+Oxaliplatin
3 · Its place in the literature

Who cites it

74 citing papers in PubMed, 128 citations in OpenAlex.

  1. Trial
  2. Predictors of immunotherapy response in gastric cancer: the role of the tumor microenvironment and integrative predictive models.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026
    Review
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  5. Complement system in cancer: friend or foe of immunotherapy.Journal for immunotherapy of cancer · 2026
    Review
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  17. Curcumin Inhibits the Growth of Hepatocellular CarcinomaRecent patents on anti-cancer drug discovery · 2025
    Article
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  19. Article
  20. Article

14 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

8 authors at 3 institutions in 1 country.

Kaitao YuanCenter of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China.
Jinning YeCenter of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China.
Zhenguo LiuDepartment of Thoracic Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China.
Yufeng RenDepartment of Radiation Oncology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China.
Weiling HeCenter of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China. hewling@mail.sysu.edu.cn.
Jianbo XuCenter of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China. xjianb@mail.sysu.edu.cn.
Yulong HeCenter of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China. yulongh.sysu@gmail.com.
Yujie YuanCenter of Gastrointestinal Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, People's Republic of China. condor.yyj@gmail.com.
Sun Yat-sen University · CNSun Yat-sen University Cancer Center · CNThe First Affiliated Hospital, Sun Yat-sen University · CN

Funding

Fundamental Research Funds for the Central Universities 15ykpy17Medical Science and Technology Foundation of Guangdong Province A2015112, 2015A030313053, 2015A030313053National Natural Science Foundation of China 81472260Young Scientists Fund 81401307
6 · The paper itself

Abstract

backgroundLocalized C3 deposition is a well-known factor of inflammation. However, its role in oncoprogression of gastric cancer (GC) remains obscured. This study aims to explore the prognostic value of C3 deposition and to elucidate the mechanism of C3-related oncoprogression for GC.

methodsFrom August to December 2013, 106 GC patients were prospectively included. The regional expression of C3 and other effectors in gastric tissues were detected by WB, IHC, qRT-PCR and other tests. The correlation of localized C3 deposition and oncologic outcomes was determined by 5-year survival significance. Human GC and normal epithelial cell lines were employed to detect a relationship between C3 and STAT3 signaling pathway in vitro experiments.

resultsC3 and C3a expression were markedly enhanced in GC tissues at both mRNA and protein levels compared with those in paired nontumorous tissues. According to IHC C3 score, 65 (61.3%) and 41 (38.7%) patients had high and low C3 deposition, respectively. C3 deposition was negatively correlated with plasma levels of C3 and C3a (both P < 0.001) and positively correlated with pathological T and TNM stages (both P < 0.001). High C3 deposition was identified as an independent prognostic factor of poor 5-year overall survival (P = 0.045). In vitro C3 administration remarkably enhanced p-JAK2/p-STAT3 expression in GC cell lines but caused a reduction of such activation when pre-incubated with a C3 blocker. Importantly, C3 failed to activate such signaling in cells pre-treated with a JAK2 inhibitor.

conclusionsLocalized C3 deposition in the tumor microenvironment is a relevant immune signature for predicting prognosis of GC. It may aberrantly activate JAK2/STAT3 pathway allowing oncoprogression.

trial registrationClinicalTrials.gov, NCT02425930, Registered 1st August 2013.

Indexed as

Signal TransductionUp-RegulationAdultAgedCell Line, TumorCell ProliferationComplement C3Disease ProgressionFemaleGene Expression Regulation, NeoplasticHumansJanus Kinase 2MaleMiddle AgedNeoplasm InvasivenessNeoplasm StagingC3 protein, humanComplement C3JAK2 protein, humanJanus Kinase 2STAT3 protein, humanSTAT3 Transcription FactorComplementGastric cancerImmune signaturePrognosis predictionSTAT3Tumor stage

Identifiers

PMID31928530
PMCPMC6956509
OpenAlexW3005326261

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Registered trials

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.