Trial reportBreast cancer research and treatment2018
Phase II study of buparlisib (BKM120) and trastuzumab in patients with HER2+ locally advanced or metastatic breast cancer resistant to trastuzumab-based therapy.
Trial report in Breast cancer research and treatment, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 1 of them a synthesis that pooled it.
What it found
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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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
37 citing papers in PubMed, 1 synthesis or guideline pooled it, 63 citations in OpenAlex.
- Reporting on patient's body mass index (BMI) in recent clinical trials for patients with breast cancer: a systematic review.Breast cancer research : BCR · 2024Pooled it
- Pyrotinib plus capecitabine for trastuzumab-resistant, HER2-positive advanced breast cancer (PICTURE): a single-arm, multicenter phase 2 trial.BMC medicine · 2023Trial
- Trial
- Post-Chemotherapy Antibody-Based Continuation and Maintenance Strategies in HER2-Positive Metastatic Breast Cancer: A Translational Narrative Review.Antibodies (Basel, Switzerland) · 2026Review
- Heterogeneous tissue-specific macrophages orchestrate metastatic organotropism of breast cancer: implications for promising therapeutics.Journal of translational medicine · 2025Review
- The Biological Roles and Clinical Applications of the PI3K/AKT Pathway in Targeted Therapy Resistance in HER2-Positive Breast Cancer: A Comprehensive Review.International journal of molecular sciences · 2024Review
- Evolving Management of Breast Cancer in the Era of Predictive Biomarkers and Precision Medicine.Journal of personalized medicine · 2024Review
- Inhibition of PI3K/AKT signaling using BKM120 reduced the proliferation and migration potentials of colorectal cancer cells and enhanced cisplatin-induced cytotoxicity.Molecular biology reports · 2024Article
- Molecular Targeting of the Phosphoinositide-3-Protein Kinase (PI3K) Pathway across Various Cancers.International journal of molecular sciences · 2024Review
- Resistance mechanisms and prospects of trastuzumab.Frontiers in oncology · 2024Review
- Role of EGFR and FASN in breast cancer progression.Journal of cell communication and signaling · 2023Review
- Phosphoinositide 3-Kinase (PI3K) Inhibitors and Breast Cancer: An Overview of Current Achievements.Cancers · 2023Review
- Review
- Targeting PI3K/AKT/mTOR Pathway in Breast Cancer: From Biology to Clinical Challenges.Biomedicines · 2023Review
- Systemic Therapy for HER2-Positive Metastatic Breast Cancer: Current and Future Trends.Cancers · 2022Review
- PIK3CAMutations in Breast Cancer Subtypes Other Than HR-Positive/HER2-Negative.Journal of personalized medicine · 2022Article
- Therapeutic landscape of advanced HER2-positive breast cancer in 2022.Medical oncology (Northwood, London, England) · 2022Review
- An Insight into Molecular Targets of Breast Cancer Brain Metastasis.International journal of molecular sciences · 2022Review
- Leptomeningeal Metastases: New Opportunities in the Modern Era.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2022Review
- The role of HER2 alterations in clinicopathological and molecular characteristics of breast cancer and HER2-targeted therapies: a comprehensive review.Medical oncology (Northwood, London, England) · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
15 authors at 12 institutions in 7 countries.
Funding
Abstract
purposeA Phase Ib study in patients with trastuzumab-resistant, human epidermal growth factor receptor-2- (HER2)-positive advanced breast cancer defined the recommended Phase II dose of buparlisib as 100 mg/day in combination with 2 mg/kg weekly trastuzumab, and reported preliminary signs of clinical activity. Here we present results from the Phase II portion.
methodsPatients with trastuzumab-resistant, HER2-positive advanced breast cancer received buparlisib plus trastuzumab. Study endpoints included safety/tolerability and antitumour activity. The study was extended to include a Phase Ib dose-escalation phase, in which patients with progressive brain metastases also received capecitabine.
resultsIn the Phase II portion, of 50 patients treated with buparlisib and trastuzumab, the most common (≥ 30%) all-grade adverse events (AEs) were diarrhoea (54%), nausea (48%), decreased appetite, increased alanine aminotransferase (36% each), increased aspartate aminotransferase (34%), fatigue, rash (32% each), cough and hyperglycemia (30% each). One (2%) patient achieved complete response and four (8%) patients had confirmed partial responses [PR; including two patients with phosphatidylinositol 3-kinase (PI3 K) pathway-activated tumours]. Overall response rate (ORR) was 10%: the primary endpoint (ORR ≥ 25%) was therefore not met. In the Phase Ib portion, all patients with measurable brain lesions at baseline showed tumour shrinkage to some degree; due to low enrollment, maximum tolerated dose of buparlisib in combination with trastuzumab and capecitabine was not determined.
conclusionBuparlisib plus trastuzumab, as a chemotherapy-free regimen, demonstrated an acceptable safety profile but limited efficacy in patients with heavily pretreated, trastuzumab-resistant HER2-positive breast cancer, and in patients with progressive brain metastases also receiving capecitabine.
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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.