Evidence map›Paper›PMID 33064745›Full record

SynthesisPloS one2020

The clinicopathological features and prognosis of primary pulmonary lymphoepithelioma-like carcinoma: A systematic review and meta-analysis.

Liansha Tang, Nan Chen, Wenbo He, Jian Zhou, Jinjue Zhang, Zhangyu Lin, Zihuai Wang, Jianqi Hao, Feng Lin

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 30% 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

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 10 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. [Progress in Immunotherapy for Pulmonary Lymphoepithelioma Carcinoma].Zhongguo fei ai za zhi = Chinese journal of lung cancer · 2025
    Review
  8. Review
  9. Article
  10. [Clinicopathological Analysis of 14 Cases of Primary Pulmonary Lymphoepithelial Carcinoma].Zhongguo fei ai za zhi = Chinese journal of lung cancer · 2024
    Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
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

9 authors at 1 institution in 1 country.

Liansha TangDepartment of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China.
Nan ChenDepartment of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China.
Wenbo HeWest China School of Medicine, Sichuan University, Chengdu, China.
Jian ZhouDepartment of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China.
Jinjue ZhangWest China School of Medicine, Sichuan University, Chengdu, China.
Zhangyu LinWest China School of Medicine, Sichuan University, Chengdu, China.
Zihuai WangDepartment of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China.
Jianqi HaoDepartment of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China.
Feng LinDepartment of Thoracic Surgery, West China Hospital, Sichuan University, Chengdu, China.ORCID 0000-0001-7859-2796
Sichuan University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPrimary pulmonary lymphoepithelioma-like carcinoma (PPLELC) was a sparse subtype of unclassified lung cancer. The clinicopathologic features, prognostic factors and multimodality treatment regimens of LELC remain inconclusive. We conducted this systematic review and meta-analysis to address this deficit in current knowledge.

methodsWe searched PubMed, Embase, and Web of Science to filtrate studies investigating on clinical features and prognostic factors of LELC up to Sep 9th, 2020. Fixed and random effect models were generated to present the incorporated hazard ratios (HR) and odds ratios (OR) with 95% confidence intervals (CI). The quality and heterogeneity of the included studies were also evaluated carefully.

resultsThis systematic review and meta-analysis included 13 retrospective studies with a total of 1294 patients. The incidence of programmed cell death-ligand 1 (PD-L1) expression in PPLELC varied from 63.3% to 75.8%. Positive PD-L1 expression was more likely to be found in patients under 60 years old (OR = 2.16, 95%CI: 1.19-3.89, P = 0.01) and was associated with worse disease-free survival (DFS) compared with negative PD-L1 expression (HR = 2.99, 95%CI: 1.23-7.28, P = 0.02). The pooled results showed that stage was the prognostic factor for both overall survival (OS) and DFS. Moreover, a significantly better outcome of PPLELC was observed in men (HR = 0.56, 95%CI: 0.33-0.95, P = 0.03) and patients who received radiation (HR = 0.46, 95%CI: 0.22-0.96, P = 0.04).

conclusionPD-L1 expression was high in PPLELC patients. It was significantly associated with age under 60 and the unfavorable DFS. Stage and gender could be the prognostic factor for OS. Radiation could be the effective therapy for PPLELC.

Indexed as

B7-H1 AntigenDisease-Free SurvivalFemaleHumansLung NeoplasmsLymphomaMaleMiddle AgedPrognosisPublication BiasB7-H1 Antigen

Identifiers

PMID33064745
PMCPMC7567369
OpenAlexW3093119884

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.