Evidence map›Paper›PMID 34526333›Full record

ArticleBMJ open2021

Treatment patterns and survival outcomes for patients with non-small cell lung cancer in the UK in the preimmunology era: a REAL-Oncology database analysis from the I-O Optimise initiative.

Michael Snee, Sue Cheeseman, Matthew Thompson, Majid Riaz, Will Sopwith, Laure Lacoin, Carlos Chaib, Melinda J Daumont, John R Penrod, Geoff Hall

Abstract read
In one paragraph

Article in BMJ open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 3 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

18 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Pooled it
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  7. Prognostic impact ofTranslational lung cancer research · 2025
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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

10 authors.

Michael SneeLeeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK m.snee@nhs.net.
Sue CheesemanREAL Oncology, Leeds Teaching Hospitals NHS Trust, Leeds, UK.
Matthew ThompsonREAL Oncology, Leeds Teaching Hospitals NHS Trust, Leeds, UK.
Majid RiazREAL Oncology, Leeds Teaching Hospitals NHS Trust, Leeds, UK.
Will SopwithREAL Oncology, Leeds Teaching Hospitals NHS Trust, Leeds, UK.
Laure LacoinEpi-Fit, Bordeaux, Nouvelle-Aquitaine, UK.
Carlos ChaibResearch & Development Medical Affairs, Bristol Myers Squibb, Madrid, Spain.
Melinda J DaumontWorldwide Health Economics & Outcomes Research, Bristol Myers Squibb, Braine-l'Alleud, Belgium.
John R PenrodWorldwide Health Economics & Outcomes Research, Bristol Myers Squibb, Princeton, New Jersey, USA.
Geoff HallLeeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo report characteristics, treatment and overall survival (OS) trends, by stage and pathology, of patients diagnosed with non-small cell lung cancer (NSCLC) at Leeds Teaching Hospital NHS Trust in 2007-2018.

designRetrospective cohort study based on electronic medical records.

settingLarge NHS university hospital in Leeds.

participants3739 adult patients diagnosed with incident NSCLC from January 2007 to August 2017, followed up until March 2018.

main outcome measuresPatient characteristics at diagnosis, treatment patterns and OS.

results34.3% of patients with NSCLC were clinically diagnosed (without pathological confirmation). Among patients with known pathology, 45.2% had non-squamous cell carcinoma (NSQ) and 33.3% had squamous cell carcinoma (SQ). The proportion of patients diagnosed at stage I increased (16.4%-27.7% in 2010-2017); those diagnosed at stage IV decreased (57.0%-39.1%). Surgery was the most common initial treatment for patients with pathologically confirmed stage I NSCLC. Use of radiotherapy alone increased over time in patients with clinically diagnosed stage I NSCLC (39.1%-60.3%); chemoradiation increased in patients with stage IIIA NSQ (21.6%-33.3%) and SQ (24.2%-31.9%). Initial treatment with systemic anticancer therapy (SACT) increased in patients with stages IIIB-IV NSQ (49.0%-67.5%); the proportion of untreated patients decreased (30.6%-15.0%). Median OS improved for patients diagnosed with stage I NSQ and SQ and stage IIIA NSQ over time. Median OS for patients with stages IIIB-IV NSQ and SQ remained stable, <10% patients were alive 3 years after diagnosis. Median OS for clinically diagnosed stages IIIB-IV patients was 1.2 months in both periods.

conclusionsOS for stage I and IIIA patients improved over time, likely due to increased use of stereotactic ablative radiation, surgery (stage I) and chemoradiation (stage IIIA). Conversely, OS outcomes remained poor for stage IIIB-IV patients despite increasing use of SACT for NSQ. Many patients with advanced-stage disease remained untreated.

Indexed as

Carcinoma, Non-Small-Cell LungLung NeoplasmsHumansNeoplasm StagingRetrospective StudiesUnited Kingdomchemotherapyepidemiologyoncologyradiation oncologyrespiratory tract tumours

Identifiers

PMID34526333
PMCPMC8444261

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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.