ArticleNPJ breast cancer2022
Abemaciclib in combination with pembrolizumab for HR+, HER2- metastatic breast cancer: Phase 1b study.
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 NCT02779751 (A Phase 1b Study of Abemaciclib in Combination With Pembrolizumab for Patients With Stage IV Non-Small Cell Lung Cancer or Hormone Receptor Positive, HER2 Negative Breast Cancer), which is not on this map. Cited by 69 papers, 2 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.
A Phase 1b Study of Abemaciclib in Combination With Pembrolizumab for Patients With Stage IV Non-Small Cell Lung Cancer or Hormone Receptor Positive, HER2 Negative Breast Cancer
Who cites it
69 citing papers in PubMed, 2 syntheses or guidelines pooled it, 75 citations in OpenAlex.
- CDK4/6 inhibitors as conditional immune-priming agents in breast cancer: therapeutic windows, sequencing strategies, and rational combinations with immunotherapy, radiotherapy, and antibody-drug conjugates.Frontiers in immunology · 2026Pooled it
- PD-1/PD-L1 immune checkpoint blockade in breast cancer: research insights and sensitization strategies.Molecular cancer · 2024Pooled it
- Phase 2 study of palbociclib plus retifanlimab in patients with advanced dedifferentiated liposarcoma.Journal for immunotherapy of cancer · 2026Trial
- Pembrolizumab and Paclitaxel in Patients with HR+/HER2- Breast Cancer with HER2-Enriched or Basal-like Subtypes.Clinical cancer research : an official journal of the American Association for Cancer Research · 2026Trial
- A Phase II Randomized Study of Paclitaxel Alone or Combined with Pelareorep with or without Avelumab in Metastatic Hormone Receptor-Positive Breast Cancer: The BRACELET-01/PrE0113 Study.Clinical cancer research : an official journal of the American Association for Cancer Research · 2025Trial
- Pembrolizumab and chemotherapy in high-risk, early-stage, ERNature medicine · 2025Trial
- Neoadjuvant nivolumab and chemotherapy in early estrogen receptor-positive breast cancer: a randomized phase 3 trial.Nature medicine · 2025Trial
- Hormone therapy enhances anti-PD1 efficacy in premenopausal estrogen receptor-positive and HER2-negative advanced breast cancer.Cell reports. Medicine · 2025Trial
- Ipilimumab and nivolumab combined with anthracycline-based chemotherapy in metastatic hormone receptor-positive breast cancer: a randomized phase 2b trial.Journal for immunotherapy of cancer · 2024Trial
- Efficacy, safety, and biomarker analysis of nivolumab in combination with abemaciclib plus endocrine therapy in patients with HR-positive HER2-negative metastatic breast cancer: a phase II study (WJOG11418B NEWFLAME trial).Journal for immunotherapy of cancer · 2023Trial
- The immunology of human breast cancer.Nature reviews. Immunology · 2026Review
- CDK4/6 Inhibitors in Breast Cancer Therapy: Mechanisms, Resistance, and Emerging Opportunities.Targeted oncology · 2026Review
- Abemaciclib in HR+, HER2- Breast Cancer: A Narrative Review of the Clinical Evidence.Oncology and therapy · 2026Review
- Therapeutic challenges of a renal collision tumour comprising clear cell renal cell carcinoma and metastatic breast carcinoma: a case report.BJC reports · 2026Article
- The evolving landscape of CDK inhibitor use in breast cancer therapy and beyond.Nature reviews. Drug discovery · 2026Review
- CDK4/6 Inhibition Induces CD8Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Optimizing axillary lymph node management in early-stage HR+/HER2- breast cancer: Practical strategies for enhanced detection rates.Breast (Edinburgh, Scotland) · 2026Article
- Immunotherapy and Breast Reconstruction: Opportunities, Challenges, and Future Directions.Cancer medicine · 2026Review
- Emerging Strategies to Inhibit the G1/S Transition for Cancer Therapy.Cancer research · 2026Review
- Endocrine Therapy for Endometrial Carcinoma: Current Evidence, Resistance Mechanisms, and Biomarker-Driven Patient Selection.Current oncology (Toronto, Ont.) · 2026Review
9 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 11 institutions in 4 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
This nonrandomized, open-label, multi-cohort Phase 1b study (NCT02779751) investigated the safety and efficacy of abemaciclib plus pembrolizumab with/without anastrozole in patients with hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2-) metastatic breast cancer (MBC) without prior CDK4 and 6 inhibitor exposure. Patients were divided into two cohorts: treatment naïve (cohort 1) and pretreated (cohort 2). Patients received abemaciclib plus pembrolizumab with (cohort 1) or without (cohort 2) anastrozole over 21-day cycles. The primary objective was safety, and secondary objectives included efficacy and pharmacokinetics (PK). Cohort 1/2 enrolled 26/28 patients, respectively. Neutropenia (30.8/28.6%), AST increase (34.6/17.9%), ALT increase (42.3/10.7%), and diarrhea (3.8/10.7%) were the most frequent grade ≥3 adverse events in cohort 1/2, respectively. A total of two deaths occurred, which investigators attributed to treatment-related adverse events (AEs), both in cohort 1. Higher rates of all grade and grade ≥3 interstitial lung disease (ILD)/pneumonitis were observed compared to previously reported with abemaciclib and pembrolizumab monotherapy. The PK profiles were consistent between cohorts and with previous monotherapy studies. In cohorts 1/2, the overall response rate and disease control rate were 23.1/28.6% and 84.6/82.1%, respectively. Median progression-free survival and overall survivals were 8.9 (95% CI: 3.9-11.1) and 26.3 months (95% CI: 20.0-31.0) for cohort 2; cohort 1 data are immature. Abemaciclib plus pembrolizumab demonstrated antitumor activity, but high rates of ILD/pneumonitis and severe transaminase elevations occurred with/without anastrozole compared to the previous reporting. Benefit/risk analysis does not support further evaluation of this combination in the treatment of HR+, HER2- MBC.
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.