Evidence map›Paper›PMID 21927908›Full record

ArticleJournal of cancer research and clinical oncology2011

Expression and clinical significance of leptin, the functional receptor of leptin (OB-Rb) and HER-2 in non-small-cell lung cancer: a retrospective analysis.

Yan-Jie Xu, Yong-Feng Shao, Xia Zhao, Yi-Ting Geng, Kai Wang, Yong-Mei Yin

Open access · greenAbstract read
In one paragraph

Article in Journal of cancer research and clinical oncology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
1.0field-weighted citation impact, top 21% 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

18 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Review
  6. Review
  7. Leptin-induced signaling pathways in cancer cell migration and invasion.Cellular oncology (Dordrecht, Netherlands) · 2019
    Review
  8. Article
  9. Review
  10. Review
  11. Article
  12. Article
  13. Effects of leptin and leptin receptor gene polymorphisms on lung cancer.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2014
    Article
  14. [Advances of the relationship between leptin system and non-small cell lung cancer].Zhongguo fei ai za zhi = Chinese journal of lung cancer · 2014
    Review
  15. Article
  16. Review
  17. Article
  18. Review
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

6 authors at 3 institutions in 1 country.

Yan-Jie XuDepartment of Medical Oncology, The First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, Jiangsu Province, People's Republic of China.
Yong-Feng Shao
Xia Zhao
Yi-Ting Geng
Kai Wang
Yong-Mei Yin
Nanjing Medical University · CNJiangsu Province Hospital · CNNanjing Chest Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe human epidermal growth factor receptor 2 (HER-2) and leptin/OB-R system have been reported to be intertwined in several cancer types. However, limited research has been conducted with regard to this interaction in lung cancers. In this study, we investigated the relationship between the expression levels of these proteins and the development, progression and prognosis of non-small-cell lung cancer (NSCLC).

methodsThe expression of leptin, OB-Rb and HER-2 was evaluated in 100 NSCLC specimens by immunohistochemistry, with normal lung tissue as controls. The relationships between their expression levels and clinicopathological factors were evaluated by correlation analysis. Univariate and multivariate analyses were used to determine the associations between the expression levels of these proteins and the survival of NSCLC patients.

resultsLeptin was expressed in 71 and 25% (P < 0.05) of NSCLC and normal lung tissues, respectively, while OB-Rb was expressed in 62 and 31% (P < 0.05), respectively. Overexpression of HER-2 was detected in 53% of NSCLC tissues versus 0% of normal lung tissues (P < 0.05). A significant association was found between the expression levels of leptin and OB-Rb (P = 0.024), and between tumor-node-metastasis (TNM) stage and HER-2 expression (P = 0.003). Univariate survival analysis showed that TNM stage (P < 0.001) and leptin expression (P = 0.009) influenced survival time. Multivariate analysis suggested that TNM stage [hazard ratio (HR) 1.63, 95% confidence interval (CI) 1.30-2.04, P < 0.001] and leptin expression (HR 1.69, 95% CI 1.01-2.80, P = 0.044) were independent prognostic factors for NSCLC.

conclusionsThe expression of leptin, OB-Rb and HER-2 was significantly higher in NSCLC tissues than in normal lung tissues. The expression of leptin is an independent prognostic factor for NSCLC.

Indexed as

AdultAgedCarcinoma, Non-Small-Cell LungErb-b2 Receptor Tyrosine KinasesFemaleHumansLeptinLungLung NeoplasmsMaleMiddle AgedMultivariate AnalysisNeoplasm StagingPrognosisReceptors, LeptinRetrospective StudiesERBB2 protein, humanErb-b2 Receptor Tyrosine KinasesLeptinReceptors, Leptin

Identifiers

PMID21927908
PMCPMC11827768
OpenAlexW2086002227

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Registered trials

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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.