Evidence map›Paper›PMID 33465302›Full record

SynthesisCancer medicine2021

Safety and Efficacy of PD-1/PD-L1 inhibitors combined with radiotherapy in patients with non-small-cell lung cancer: a systematic review and meta-analysis.

Yichao Geng, Qiuning Zhang, Shuangwu Feng, Chengcheng Li, Lina Wang, Xueshan Zhao, Zhen Yang, Zheng Li, Hongtao Luo, Ruifeng Liu and 2 more

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Cancer medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed, 8 pooled it
6.7field-weighted citation impact, top 2% 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

73 citing papers in PubMed, 8 syntheses or guidelines pooled it, 105 citations in OpenAlex.

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  5. Antibiotic adoption effects on nutrition and quality of life in lung cancer patients undergoing radiotherapy and chemotherapy: A meta-analysis.Technology and health care : official journal of the European Society for Engineering and Medicine · 2024
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13 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

12 authors at 3 institutions in 1 country.

Yichao GengThe First School of Clinical Medicine, Lanzhou University, Lanzhou, China.ORCID 0000-0001-5157-4571
Qiuning ZhangInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.
Shuangwu FengThe First School of Clinical Medicine, Lanzhou University, Lanzhou, China.ORCID 0000-0001-5272-7840
Chengcheng LiThe First School of Clinical Medicine, Lanzhou University, Lanzhou, China.ORCID 0000-0001-7511-9311
Lina WangThe First School of Clinical Medicine, Lanzhou University, Lanzhou, China.
Xueshan ZhaoThe First School of Clinical Medicine, Lanzhou University, Lanzhou, China.
Zhen YangBasic Medical College, Lanzhou University, Lanzhou, China.
Zheng LiInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.
Hongtao LuoInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.
Ruifeng LiuInstitute of Modern Physics, Chinese Academy of Sciences, Lanzhou, China.
Bing LuDepartment of Oncology, The Affiliated Hospital of Guizhou Medical University, Guiyang, China.
Xiaohu WangThe First School of Clinical Medicine, Lanzhou University, Lanzhou, China.ORCID 0000-0002-0018-1847
Lanzhou University · CNChinese Academy of Sciences · CNGuiyang Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundA combination of programmed cell death protein-1 (PD-1)/programmed cell death ligand-1 (PD-L1) inhibitors and radiotherapy (RT) is increasingly being used to treat non-small-cell lung cancer (NSCLC). However, the safety and efficacy of this approach remains controversial. We performed a systematic review and meta-analysis to summarize the related research.

methodsWe searched the China Biology Medicine, EMBASE, Cochrane Library, and PubMed databases for all the relevant studies. The Stata software, version 12.0 was used for the meta-analysis.

resultsThe study included 20 clinical trials that enrolled 2027 patients with NSCLC. Compared with non-combination therapy, combination therapy using PD-1/PD-L1 inhibitors and RT was associated with prolonged overall survival (OS) (1-year OS: odds ratio [OR] 1.77, 95% confidence interval [CI] 1.35-2.33, p = 0.000; 2-year OS: OR 1.77, 95% CI 1.35-2.33, p = 0.000) and progression-free survival (PFS) (0.5-year PFS: OR 1.83, 95% CI 1.13-2.98, p = 0.014; 1-year PFS: OR 2.09, 95% CI 1.29-3.38, p = 0.003; 2-year PFS: OR 2.47, 95% CI 1.13-5.37, p = 0.023). Combination therapy also improved the objective response rate (OR 2.76, 95% CI 1.06-7.19, p = 0.038) and disease control rate (OR 1.80, 95% CI 1.21-2.68, p = 0.004). This meta-analysis showed that compared with non-combination therapy, combination therapy using PD-1/PD-L1 inhibitors and RT did not increase the serious adverse event rates (≥grade 3); however, this approach increased the rate of grade 1-2 immune-related or radiation pneumonitis. Subgroup analyses revealed that the sequence of PD-1/PD-L1 inhibitors followed RT outperformed in which concurrent PD-1/PD-L1 inhibitor and RT followed PD-1/PD-L1 inhibitor. Combination of stereotactic body RT or stereotactic radiosurgery with PD-1/PD-L1 inhibitors may be more effective than a combination of conventional RT with PD-1/PD-L1 inhibitors in patients with advanced NSCLC.

conclusionCombination therapy using PD-1/PD-L1 inhibitors and RT may improve OS, PFS, and tumor response rates without an increase in serious adverse events in patients with advanced NSCLC. However, combination therapy was shown to increase the incidence of mild pneumonitis.

Indexed as

B7-H1 AntigenCarcinoma, Non-Small-Cell LungChemoradiotherapyCombined Modality TherapyHumansImmune Checkpoint InhibitorsImmunotherapyLung NeoplasmsProgrammed Cell Death 1 ReceptorRadiosurgeryRandomized Controlled Trials as TopicSurvival RateB7-H1 AntigenCD274 protein, humanImmune Checkpoint InhibitorsPDCD1 protein, humanProgrammed Cell Death 1 Receptorcombined radio-immunotherapymeta-analysisnon-small-cell lung cancerprogrammed cell death protein-1/programmed cell death ligand-1 inhibitorsradiotherapysystematic review

Identifiers

PMID33465302
PMCPMC7926021
OpenAlexW3123073834

What OpenQuestion holds

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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.