ArticleCancers2021
Phase Ib Trial of Copanlisib, A Phosphoinositide-3 Kinase (PI3K) Inhibitor, with Trastuzumab in Advanced Pre-Treated HER2-Positive Breast Cancer "PantHER".
Article in Cancers, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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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.
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Who cites it
9 citing papers in PubMed, 19 citations in OpenAlex.
- Conventional and alternative approaches for targeting PIK3CA and PTEN alterations in head and neck, breast, and other cancers.Advances in biological regulation · 2026Review
- Article
- High frequency of the PIK3CA H1047L mutation in Indonesian breast cancer across molecular subtypes.PloS one · 2025Article
- 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
- Established and Emerging Cancer Therapies and Cardiovascular System: Focus on Hypertension-Mechanisms and Mitigation.Hypertension (Dallas, Tex. : 1979) · 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
- Review
- Breast Cancer Treatments: Updates and New Challenges.Journal of personalized medicine · 2021Review
Corrections and comments
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Authors and funding
26 authors at 6 institutions in 1 country.
Funding
Abstract
backgroundActivation of the phosphoinositide-3 kinase (PI3K) pathway is a resistance mechanism to anti-human epidermal growth factor receptor 2 (HER2) therapy. This phase Ib trial was conducted to determine the maximum tolerated dose (MTD) of copanlisib, an intravenous (IV) pan-class I PI3K inhibitor, combined with trastuzumab.
methodsPatients with advanced HER2-positive breast cancer and disease progression following at least one prior line of HER2 therapy in the metastatic setting were treated with copanlisib (45 or 60 mg) IV on days 1, 8 and 15 of a 28-day cycle with a fixed dose of trastuzumab 2 mg/kg weekly.
resultsTwelve patients were enrolled. The MTD was determined as copanlisib 60 mg plus trastuzumab 2 mg/kg weekly. The most common adverse events of any grade occurring in more than two patients were hyperglycaemia (58%), fatigue (58%), nausea (58%) and hypertension (50%). Stable disease was confirmed at 16 weeks in six participants (50%).
conclusionCopanlisib and trastuzumab can be safely administered with fair overall tolerability. Preliminary evidence of tumour stability was observed in patients with heavily pre-treated, metastatic HER2 positive breast cancer. Several potential biomarkers were identified for further study in the current phase 2 clinical trial. NCT: 02705859.
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Registered trials
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