ArticleNPJ breast cancer2022
Real-world study of overall survival with palbociclib plus aromatase inhibitor in HR+/HER2- metastatic breast cancer.
Article in NPJ breast cancer, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05361655 (Real-World Treatment Effectiveness of Palbociclib in Combination With an Aromatase Inhibitor as 1st Line Therapy in Metastatic Breast Cancer), which is not on this map. Cited by 87 papers, 4 of them syntheses that pooled 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.
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.
Real-World Treatment Effectiveness of Palbociclib in Combination With an Aromatase Inhibitor as 1st Line Therapy in Metastatic Breast Cancer
Who cites it
87 citing papers in PubMed, 4 syntheses or guidelines pooled it, 110 citations in OpenAlex.
- Palbociclib treatment in patients with HR+/HER2- advanced or metastatic breast cancer and visceral metastasis: A systematic literature review.Breast (Edinburgh, Scotland) · 2025Pooled it
- Pooled it
- Comparative efficacy between real-world and randomized studies of palbociclib+endocrine therapy in HR-positive/HER2-negative metastatic breast cancer: systematic review and meta-analysis.JNCI cancer spectrum · 2025Pooled it
- Palbociclib in Older Patients with Advanced/Metastatic Breast Cancer: A Systematic Review.Targeted oncology · 2024Pooled it
- Trial
- Overall survival and subsequent therapy patterns in Japanese patients with ER+/HER2- advanced breast cancer treated with palbociclib plus letrozole in the first-line setting: a final analysis.Breast cancer (Tokyo, Japan) · 2025Trial
- Bioequivalence of a single dose of two palbociclib formulations in healthy Chinese subjects under fasting conditions: a two-period crossover study with rabeprazole pre-treatment.Frontiers in pharmacology · 2025Trial
- Palbociclib in Combination with either Aromatase Inhibitors or Fulvestrant for Patients with Advanced HR+/HER2- Breast Cancer in Germany: Final Results of the Phase 2 Multicohort INGE-B Trial.Oncology research and treatment · 2025Trial
- Palbociclib in adults aged 70 years and older with advanced breast cancer: A phase 2 multicenter trial (Alliance A171601).Journal of geriatric oncology · 2024Trial
- A real-world study of the first use of palbociclib for the treatment of advanced breast cancer within the UK National Health Service as part of the novel Ibrance® Patient Program.British journal of cancer · 2023Trial
- Stimuli-Responsive Hydrogel Systems for Breast Cancer Therapy: Advances in Targeted Delivery and Tumor Microenvironment Modulation.AAPS PharmSciTech · 2026Review
- Genetic Variation inInternational journal of molecular sciences · 2026Article
- First-Line Palbociclib/Letrozole Versus Ribociclib/Letrozole in Postmenopausal HR-Positive/HER2-Negative Metastatic Breast Cancer: A Retrospective Real-World Study and an Exploratory Composite Clinical-Inflammatory Risk Score.Medicina (Kaunas, Lithuania) · 2026Article
- CDK4/6 Inhibitor-Induced Senescence in Cancer: Mechanisms and Therapeutic Implications.Cancers · 2026Review
- Ribociclib and Palbociclib Are Safe and Effective for Treating Metastatic Breast Cancer: A Retrospective Study.Cancer reports (Hoboken, N.J.) · 2026Observational
- Maximizing the impact of real-world evidence on cancer treatment: what do we need to achieve it?Journal of comparative effectiveness research · 2026Review
- Observational
- Real-world effectiveness of palbociclib in combination with an aromatase inhibitor in HR+/HER2- bone-only metastatic breast cancer.Breast (Edinburgh, Scotland) · 2026Article
- Clinical and Genomic Factors Associated with Elacestrant Outcomes in ESR1-Mutant Metastatic Breast Cancer.Clinical cancer research : an official journal of the American Association for Cancer Research · 2026Article
- Real world experience with cyclin dependent kinase inhibitors in metastatic breast cancer in India.PloS one · 2026Article
27 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
12 authors at 9 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Data on real-world effectiveness of cyclin-dependent kinase 4/6 inhibitor combination therapy versus endocrine therapy alone are limited. The Flatiron Health Analytic Database was used to assess overall survival (OS) in patients with hormone receptor-positive/human epidermal growth factor receptor 2-negative (HR+/HER2-) metastatic breast cancer (MBC) treated with first-line palbociclib plus an aromatase inhibitor (AI) versus an AI alone in routine US clinical practice. In total, 2888 patients initiated treatment during February 3, 2015-March 31, 2020, with a potential ≥6-month follow-up (cutoff date, September 30, 2020). After stabilized inverse probability treatment weighting, median OS (95% CI) is significantly longer among palbociclib versus AI recipients (49.1 [45.2-57.7] versus 43.2 [37.6-48.0] months; hazard ratio, 0.76 [95% CI, 0.65-0.87]; P < 0.0001). Progression-free survival (95% CI) is 19.3 (17.5-20.7) versus 13.9 (12.5-15.2) months, respectively (hazard ratio, 0.70 [95% CI, 0.62-0.78]; P < 0.0001). These data support first-line palbociclib plus an AI treatment for HR+/HER2- MBC.(Trial number NCT05361655).
Identifiers
What OpenQuestion holds
Registered trials
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.