Evidence map›Paper›PMID 33121520›Full record

ArticleRadiation oncology (London, England)2020

Prognostic value of PD-L1 expression in patients with unresectable stage III non-small cell lung cancer treated with chemoradiotherapy.

Martina Vrankar, Izidor Kern, Karmen Stanic

Open access · goldAbstract read
In one paragraph

Article in Radiation oncology (London, England), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 15% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

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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

3 authors at 2 institutions in 1 country.

Martina VrankarDepartment of Radiotherapy, Institute of Oncology Ljubljana, Zaloska 2, 1000, Ljubljana, Slovenia.
Izidor KernDepartment of Pathology, University Clinic of Respiratory and Allergic Diseases Golnik, Golnik 36, 4202, Golnik, Slovenia.
Karmen StanicDepartment of Radiotherapy, Institute of Oncology Ljubljana, Zaloska 2, 1000, Ljubljana, Slovenia. kstanic@onko-i.si.ORCID http://orcid.org/0000-0002-1239-0427
University of Ljubljana · SIUniversity Clinic of Pulmonary and Allergic Diseases Golnik · SI

Funding

AstraZeneca ERID-KSOPKR/47
6 · The paper itself

Abstract

backgroundExpression of PD-L1 is the most investigated predictor of benefit from immune checkpoint blockade in advanced NSCLC but little is known about the association of PD-L1 expression and clinicopathological parameters of patients with unresectable stage III NSCLC.

methodsNational registry data was searched for medical records of consecutive inoperable stage III NSCLC patients treated with ChT and RT from January 2012 to December 2017. Totally 249 patients were identified that met inclusion criteria and of those 117 patients had sufficient tissue for PD-L1 immunohistochemical staining.

resultsEighty patients (68.4%) expressed PD-L1 of ≥ 1% and 29.9% of more than 50%. Median PFS was 15.9 months in PD-L1 negative patients and 16.1 months in patients with PD-L1 expression ≥ 1% (p = 0.696). Median OS in PD-L1 negative patients was 29.9 months compared to 28.5 months in patients with PD-L1 expression ≥ % (p = 0.888). There was no difference in median OS in patients with high PD-L1 expression (≥ 50%) with 29.8 months compared to 29.9 months in those with low (1-49%) or no PD-L1 expression (p = 0.694). We found that patients who received a total dose of 60 Gy or more had significantly better median OS (32 months vs. 17.5 months, p < 0.001) as well as patients with PS 0 (33.2 vs. 20.3 months, p = 0.005).

conclusionsIn our patients PD-L1 expression had no prognostic value regarding PFS and OS. Patients with good performance status and those who received a total radiation dose of more than 60 Gy had significantly better mOS.

Indexed as

ChemoradiotherapyAgedB7-H1 AntigenCarcinoma, Non-Small-Cell LungC-Reactive ProteinFemaleHumansLung NeoplasmsMaleMiddle AgedNeoplasm StagingPrognosisB7-H1 AntigenCD274 protein, humanC-Reactive ProteinChemoradiotherapyNon small cell lung cancerPD-L1 expressionStage III

Identifiers

PMID33121520
PMCPMC7594267
OpenAlexW3096546598

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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.