Evidence map›Paper›PMID 32420142›Full record

ArticleTranslational andrology and urology2020

The prevalence and prognostic and clinicopathological value of PD-L1 and PD-L2 in renal cell carcinoma patients: a systematic review and meta-analysis involving 3,389 patients.

Yi Lu, Yuxuan Song, Yawei Xu, Ningjing Ou, Zhen Liang, Rui Hu, Wei Zhang, Jiaqi Kang, Xianhao Wang, Li Liu and 2 more

Open access · diamondAbstract read
In one paragraph

Article in Translational andrology and urology, 2020. 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
0.9field-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

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

  1. Pooled it
  2. Prognostic value of PD-L1 in patients with metastatic renal cell carcinoma (mRCC) treated with antiangiogenic first line drugs (PROANG-SOGUG study).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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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

12 authors at 2 institutions in 1 country.

Yi LuDepartment of Urology, Tianjin Medical University General Hospital, Tianjin 300052, China.
Yuxuan SongDepartment of Urology, Tianjin Medical University General Hospital, Tianjin 300052, China.
Yawei XuDepartment of Urology, Tianjin Medical University General Hospital, Tianjin 300052, China.
Ningjing OuDepartment of Urology, Tianjin Medical University General Hospital, Tianjin 300052, China.
Zhen LiangDepartment of Urology, Tianjin Medical University General Hospital, Tianjin 300052, China.
Rui HuDepartment of Urology, Tianjin Medical University General Hospital, Tianjin 300052, China.
Wei ZhangDepartment of Urology, Tianjin Medical University General Hospital, Tianjin 300052, China.
Jiaqi KangDepartment of Urology, Tianjin Medical University General Hospital, Tianjin 300052, China.
Xianhao WangDepartment of Urology, Tianjin Medical University General Hospital, Tianjin 300052, China.
Li LiuDepartment of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China.
Yongjiao YangDepartment of Urology, The Second Hospital of Tianjin Medical University, Tianjin 300211, China.
Xiaoqiang LiuDepartment of Urology, Tianjin Medical University General Hospital, Tianjin 300052, China.
Tianjin Medical University General Hospital · CNSecond Hospital of Tianjin Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe research of the prognostic and clinicopathologic values of programmed cell death ligand 1/2 (PD-L1/2) in renal cell carcinoma (RCC) patients has been mired by a dearth of studies and considerable controversy. We thus conducted a systematic review and meta-analysis to report the prevalence and prognostic and clinicopathological value of programmed cell death ligand 1 (PD-L1) and programmed cell death-legend 2 (PD-L2) in RCC patients.

methodsThe PubMed, Cochrane Library, EMBASE databases were searched to find human studies limited to English language literature published through October 1, 2019. Using random or fixed effects models, hazard ratios (HRs) and 95% confidence intervals (CIs) were evaluated to explore the prognostic value of PD-Ls expression, while odds ratios (ORs) and 95% CIs were evaluated to investigate clinicopathological parameters. The protocol of the study was registered in PROSPERO (CRD42019135199).

resultsAfter pooling all 16 eligible studies comprising 3,389 patients, we found that the overall prevalence of PD-L1 and PD-L2 in RCC patients was 27% and 39%, respectively. Furthermore, PD-L1 over-expression was a strong negative predictor for overall survival (OS), disease-free survival/progression-free survival (DFS/PFS), and cancer-specific survival (CSS) in renal cell carcinoma patients (HR =2.86, 95% CI: 1.83-4.47, P<0.001; HR =2.64, 95% CI: 1.99-3.52, P<0.001; HR =2.78, 95% CI: 2.17-3.56, P<0.001). Meanwhile, PD-L2 over-expression was only a weak negative predictor for CSS (HR =1.66, 95% CI: 1.05-2.65, P<0.05). Subgroup analysis showed that Caucasians had worse OS (HR =3.60, 95% CI: 1.77-7.33, P<0.001), PFS (HR =3.56, 95% CI: 2.44-5.18, P<0.001), and CSS (HR =3.13, 95% CI: 2.37-4.14, P<0.001) than Asians. PD-L1 was a strong indicator for worse prognosis (P<0.05 for all), while PD-L2 over-expression was only associated with sarcomatoid features (presence

conclusionsHigher PD-L1 expression is more closely associated with poor prognosis and more advanced clinicopathological features in RCC patients than PD-L2, especially in women and Caucasian patients. PD-L2 was a weak negative predictor of poor CSS of RCC and was not a prompt for the metastasis of RCC.

Indexed as

Immune checkpointprognostic biomarkerprogrammed cell death-legend 2 (PD-L2)programmed cell death ligand 1 (PD-L1)renal cell carcinoma (RCC)

Identifiers

PMID32420142
PMCPMC7215048
OpenAlexW3012020992

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

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.