HER2 positive breast carcinoma
Also known as ERBB2 Overexpressing subtype of breast carcinoma, HER2 Overexpressing breast carcinoma, HER2 Overexpressing subtype of breast carcinoma, HER2 Positive breast cancer+1 more
ERBB2 Overexpressing subtype of breast carcinoma, HER2 Overexpressing breast carcinoma, HER2 Overexpressing subtype of breast carcinoma, HER2 Positive breast cancer, Her2-receptor positive breast cancer.
What's happening now
An analyst briefing on current research, clinical, regulatory and industry activity surrounding this disease.
- 2 clinical trials expected to report results, the earliest in Q4 2027.
- Q4 2027A Phase 1b/2 Study of the PARP Inhibitor Niraparib in Combination With Trastuzumab in Patients With Metastatic HER2+ Breast Cancer
- Q1 2028The CompassHER2 Trials (COMprehensive Use of Pathologic Response ASSessment to Optimize Therapy in HER2-Positive Breast Cancer): CompassHER2 Residual Disease (RD), A Double-Blinded, Phase III Randomized Trial of T-DM1 and Placebo Compared With T-DM1 and Tucatinib
Clinical MilestonesViewHide
- 2026-03-23A Phase II Study of Adjuvant Therapy Using a Regimen of Cyclophosphamide, Paclitaxel With Trastuzumab in Stage I-II HER2/Neu Positive Breast Cancer PatientsResults posted
- 2025-11-14Use of 64Cu-DOTA-Trastuzumab PET Imaging and Molecular Markers for Prediction of Response to Trastuzumab and Pertuzum-Based Neoadjuvant TherapyResults posted
- 2026-06-15The CompassHER2 Trials (COMprehensive Use of Pathologic Response ASSessment to Optimize Therapy in HER2-Positive Breast Cancer): CompassHER2 Residual Disease (RD), A Double-Blinded, Phase III Randomized Trial of T-DM1 and Placebo Compared With T-DM1 and TucatinibResults expected Q1 2028
- 2026-01-23A Phase 1b/2 Study of the PARP Inhibitor Niraparib in Combination With Trastuzumab in Patients With Metastatic HER2+ Breast CancerResults expected Q4 2027
- 2025-12-22A Multicenter Phase II Study of Vaccines to Prevent Recurrence in Patients With HER-2 Positive Breast CancerPrimary completion
- 2026-06-15ClinicalThe CompassHER2 Trials (COMprehensive Use of Pathologic Response ASSessment to Optimize Therapy in HER2-Positive Breast Cancer): CompassHER2 Residual Disease (RD), A Double-Blinded, Phase III Randomized Trial of T-DM1 and Placebo Compared With T-DM1 and TucatinibResults expected Q1 2028
- 2026-03-23ClinicalA Phase II Study of Adjuvant Therapy Using a Regimen of Cyclophosphamide, Paclitaxel With Trastuzumab in Stage I-II HER2/Neu Positive Breast Cancer PatientsResults posted
- 2026-01-23ClinicalA Phase 1b/2 Study of the PARP Inhibitor Niraparib in Combination With Trastuzumab in Patients With Metastatic HER2+ Breast CancerResults expected Q4 2027
- 2025-12-22ClinicalA Multicenter Phase II Study of Vaccines to Prevent Recurrence in Patients With HER-2 Positive Breast CancerPrimary completion
- 2025-11-14ClinicalUse of 64Cu-DOTA-Trastuzumab PET Imaging and Molecular Markers for Prediction of Response to Trastuzumab and Pertuzum-Based Neoadjuvant TherapyResults posted
Therapeutic landscape
Therapies with a regulatory footing for this condition, alongside the wider set of agents co-studied with it in the literature.
Approval — Metastatic breast cancer (MBC) For the treatment of adult patients with HER2-positive MBC… (2024)
Approval — Breast cancerHER2-positive breast cancerEnhertu as monotherapy is indicated for the treat… (2021)
Approval — Melanoma Keytruda as monotherapy is indicated for the treatment of adults and adolescents… (2015)
Approval — Ovarian cancer Lynparza is indicated as monotherapy for the: maintenance treatment of ad… (2014)
Approval — Breast cancer Docetaxel Kabi in combination with doxorubicin and cyclophosphamide is indi… (2012)
Approval — Hormone-receptor-positive advanced breast cancer Afinitor is indicated for the treatment… (2009)
Clinical trials
The current development programme across all trial phases.
Regulatory timeline
Drug regulatory events matched to this condition by indication — EMA.
European Medicines Agency (CC BY 4.0). Events are matched to this condition by drug indication text — approvals/updates for drugs indicated for it, not disease-specific acts.
Associated genes
Genes associated with this disease in the canonical knowledge graph (Open Targets evidence). Number shows the association score.
Disease biology
Proteins whose encoding gene is associated with this disease, reached through the canonical gene→disease graph. Number shows the gene's association score.
Reference
Authoritative identity, definition & identifiers.
ERBB2 Overexpressing subtype of breast carcinoma, HER2 Overexpressing breast carcinoma, HER2 Overexpressing subtype of breast carcinoma, HER2 Positive breast cancer, Her2-receptor positive breast cancer
- Disease identity & definition — NLM Medical Subject Headings (MeSH), public domain
- Clinical trials — ClinicalTrials.gov (U.S. National Library of Medicine)
- Related entities are derived from literature co-mention (studied together) — associative, not causal.