Evidence map›Paper›PMID 31555516›Full record

ArticleTranslational lung cancer research2019

The association of PD-L1 expression with the efficacy of anti-PD-1/PD-L1 immunotherapy and survival of non-small cell lung cancer patients: a meta-analysis of randomized controlled trials.

Yangyang Xu, Bing Wan, Xi Chen, Ping Zhan, Yuan Zhao, Tianli Zhang, Hongbing Liu, Muhammad Zubair Afzal, Said Dermime, Steven N Hochwald and 6 more

Abstract read
In one paragraph

Article in Translational lung cancer research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 109 papers, 9 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
109citing papers in PubMed, 9 pooled it
–field-weighted citation impact
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

109 citing papers in PubMed, 9 syntheses or guidelines pooled it.

  1. Use of PD-1/PD-L1 inhibitors in non-small cell lung cancer in elderly patients: a meta-analysis and systematic review of randomized clinical trials.Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico · 2026
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  10. Early Detriment Analysis of First-Line Nivolumab plus Ipilimumab-Based Therapy in Patients with Metastatic Non-Small Cell Lung Cancer.Clinical cancer research : an official journal of the American Association for Cancer Research · 2026
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49 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

16 authors.

Yangyang XuDepartment of Respiratory and Critical Care Medicine, Jinling Hospital, Nanjing Medical University, Nanjing 210002, China.
Bing WanDepartment of Respiratory and Critical Care Medicine, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing 210002, China.
Xi ChenDepartment of Respiratory and Critical Care Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China.
Ping ZhanDepartment of Respiratory and Critical Care Medicine, Jinling Hospital, Nanjing Medical University, Nanjing 210002, China.
Yuan ZhaoDepartment of Respiratory and Critical Care Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing 210002, China.
Tianli ZhangDepartment of Respiratory and Critical Care Medicine, Medical School of Southeast University, Nanjing 210002, China.
Hongbing LiuDepartment of Respiratory and Critical Care Medicine, Jinling Hospital, Nanjing Medical University, Nanjing 210002, China.
Muhammad Zubair AfzalHospital Medicine, Dartmouth-Hitchcock Medical Center, One Medical Center Dr., Lebanon, NH, USA.
Said DermimeTranslational Cancer Research Facility; National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar.
Steven N HochwaldDepartment of Surgical Oncology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA.
Paul HofmanLaboratory of Clinical and Experimental Pathology, Pasteur Hospital, Hospital University Federation OncoAge, Université Côte d'Azur; Institute for Research on Cancer and Aging, University Côte d'Azur; Hospital-Integrated Biobank (BB-003-00025), Pasteur Hospital, University Côte d'Azur, Nice, France.
Hossein BorghaeiHematology and Oncology, Fox Chase Cancer Center, Philadelphia, Pennsylvania, USA.
Dang LinDepartment of Respiratory and Critical Care Medicine, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou 215001, China.
Tangfeng LvDepartment of Respiratory and Critical Care Medicine, Jinling Hospital, Nanjing Medical University, Nanjing 210002, China.
Yong SongDepartment of Respiratory and Critical Care Medicine, Jinling Hospital, Nanjing Medical University, Nanjing 210002, China.
written on behalf of AME Lung Cancer Collaborative Group

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWe conducted a meta-analysis to evaluate the efficacy of anti-programmed cell death 1 (PD-1)/programmed cell death ligand 1 (PD-L1) monotherapy or immunotherapy combined with chemotherapy and further estimated the value of PD-L1 expression in predicting the response from anti-PD-1/PD-L1 treatments as monotherapy or in combination with chemotherapy.

methodsClinical trial data were searched from electronic databases, which evaluated PD-1/PD-L1 inhibitors in non-small cell lung cancer (NSCLC) and correlated with PD-L1 expression levels.

resultsFifteen randomized-controlled trials involving 10,074 patients were identified. Comparing anti-PD-1/PD-L1 monotherapy to chemotherapy, the pooled HR for overall survival (OS) was 0.77 (95% CI: 0.69-0.85, P<0.00001). Subgroup analyses revealed that patients had longer OS at ≥1%, ≥5%, ≥10% and ≥50% PD-L1 expression levels. Patients with higher PD-L1 expression may get increased benefit from PD-1/PD-L1 inhibitors. Moreover, patients with PD-L1 ≥50% had an objective response rate (ORR) improvement from anti-PD-1/PD-L1 therapy (RR =1.87, 95% CI: 1.27-2.75, P=0.001), but no ORR benefits were observed in patients with PD-L1 expression <1% (RR =0.82, 95% CI: 0.56-1.22, P=0.33) or 1-49% (RR =0.80, 95% CI: 0.64-0.98, P=0.03). OS was significantly better in patients receiving second-or-third line treatments (P<0.00001) with PD-L1 ≥1%. The efficacy of PD-1 inhibitors was similar to that of PD-L1 inhibitors, with no significant difference (P=0.63, I

conclusionsPD-L1 expression may be a valuable predictor of the efficacy of anti-PD-1/PD-L1 monotherapy in certain NSCLC patients. However, the combination of chemotherapy plus immunotherapy significantly improved survival regardless of the PD-L1 expression level in the first-line treatment of NSCLC.

Indexed as

Immunotherapymeta-analysisnon-small cell lung cancer (NSCLC)programmed cell death ligand 1 (PD-L1)

Identifiers

PMID31555516
PMCPMC6749123

What OpenQuestion holds

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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.