Evidence map›Paper›PMID 41912678›Full record

ArticleBritish journal of cancer2026

Abemaciclib plus fulvestrant in treating hormone-receptor positive, HER2-negative advanced breast cancer-comparing real-world outcomes in England to the MONARCH-2 trial.

Jack Anderson, Sarah Lawton, Katherine Thackray, Emma Kipps

Abstract readComparative Study
In one paragraph

Article in British journal of cancer, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–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

1 citing paper in PubMed.

  1. Beyond borders: advancing oncology trials.British journal of cancer · 2026
    Article
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

4 authors.

Jack AndersonNational Disease Registration Service, Data and Analytics, NHS England, London, UK. jack.anderson3@nhs.net.ORCID http://orcid.org/0009-0006-8531-3314
Sarah LawtonNational Disease Registration Service, Data and Analytics, NHS England, London, UK.ORCID http://orcid.org/0009-0000-0246-4026
Katherine ThackrayNational Disease Registration Service, Data and Analytics, NHS England, London, UK.ORCID http://orcid.org/0000-0002-5865-1370
Emma KippsNational Disease Registration Service, Data and Analytics, NHS England, London, UK.ORCID http://orcid.org/0000-0002-4912-8502

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAbemaciclib plus fulvestrant was approved in Europe following publication of the MONARCH-2 trial and recommended to enter the NICE Cancer Drugs Fund for HR+/HER2- advanced breast cancer. We aimed to assess MONARCH-2 generalisability to England clinical practice using real-world NHS trust data.

methodsWe identified patients receiving abemaciclib plus fulvestrant from April to December 2019 in the NHS England Blueteq and Systemic Anti-Cancer Therapy data, with follow-up to March 2024. We calculated overall survival (OS) from treatment initiation until death, and treatment-free survival (TFS) and chemotherapy-free survival (CFS) from initiation until post-discontinuation treatment or death (restricting CFS to chemotherapy). We measured outcomes using Kaplan-Meier methodology and compared to MONARCH-2.

resultsMedian OS was 25.9 months [95% CI: 23.7, 28.4] (N = 876), compared to 46.7 months (N = 446) in MONARCH-2. Differences in gender, age and performance status did not explain OS differences. Median TFS was 11.6 months [95% CI: 10.3, 12.5] compared to a median PFS of 16.9 months in MONARCH-2. Median CFS was 15.3 months [95% CI: 13.8, 16.7], compared to 25.5 months in MONARCH-2. DISCUSSION: MONARCH-2 trial data are not generalisable to this real-world cohort, which had notably shorter OS, TFS and CFS that could not be explained by differences in measured patient characteristics.

Indexed as

AminopyridinesAntineoplastic Combined Chemotherapy ProtocolsBenzimidazolesBreast NeoplasmsFulvestrantAdultAgedEnglandErb-b2 Receptor Tyrosine KinasesFemaleHumansMiddle AgedReceptors, EstrogenReceptors, ProgesteroneabemaciclibAminopyridinesBenzimidazolesERBB2 protein, humanErb-b2 Receptor Tyrosine KinasesFulvestrantReceptors, EstrogenReceptors, Progesterone

Identifiers

PMID41912678
PMCPMC13133171

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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.