ArticleESMO open2022
Margetuximab with retifanlimab as first-line therapy in HER2+/PD-L1+ unresectable or metastatic gastroesophageal adenocarcinoma: MAHOGANY cohort A.
Article in ESMO open, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 1 of them a synthesis that pooled it.
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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
40 citing papers in PubMed, 1 synthesis or guideline pooled it, 47 citations in OpenAlex.
- Chinese guidelines for HER2-targeted therapy in gastric and gastroesophageal junction adenocarcinoma (2025 Edition).Journal of hematology & oncology · 2026Guideline
- Efficacy and safety of KN026, a bispecific anti-HER2 antibody, in combination with KN046, an anti-CTLA4/PD-L1 antibody, in patients with advanced HER2-positive nonbreast cancer: a combined analysis of a phase Ib and a phase II study.Signal transduction and targeted therapy · 2025Trial
- Immunosuppressive tumor microenvironment and immunotherapy resistance of esophageal carcinoma.Frontiers in immunology · 2026Review
- Advancements in targeted therapy for gastric cancer.Therapeutic advances in gastroenterology · 2026Review
- Case Report: Sustained complete response achieved in a patient with advanced HER-2 positive gastric cancer after 4 years of chemotherapy-free treatment.Frontiers in oncology · 2026Article
- The biology and therapeutic implications of heterogeneity in Barrett oesophagus and oesophageal adenocarcinoma.Nature reviews. Clinical oncology · 2026Review
- Evolving Landscape of HER2-Targeted Therapies for Gastric Cancer Patients.Current treatment options in oncology · 2025Review
- Advances and challenges in gastric cancer testing: the role of biomarkers.Cancer biology & medicine · 2025Review
- Current status and perspectives of esophageal cancer: a comprehensive review.Cancer communications (London, England) · 2025Review
- Review
- Current Landscape of Molecular Biomarkers in Gastroesophageal Tumors and Potential Strategies for Co-Expression Patterns.Cancers · 2025Review
- Targeting HER2-Positive HCC1954 Breast Cancer Cells by Novel Thiazole-Dihydrobenzisoxazoles: In-Depth Design, Synthesis and InitialOncology research · 2025Article
- Human Epidermal Growth Factor Receptor 2 Positive Advanced Gastric or Esophagogastric Adenocarcinoma: Reflecting on the Past to Gain a New Insights.Current oncology reports · 2025Review
- HER2-positive gastric cancer: from targeted therapy to CAR-T cell therapy.Frontiers in immunology · 2025Review
- Review
- Survival and Treatment Outcomes in Gastric Cancer Patients with Brain Metastases: A Systematic Review and Meta-Analysis.Cancers · 2024Review
- Advances in the treatment of human epidermal growth factor receptor 2-positive gastric cancer.International journal of clinical oncology · 2024Review
- HER2-targeted therapies beyond breast cancer - an update.Nature reviews. Clinical oncology · 2024Review
- Emerging Therapeutic Targets and Future Directions in Advanced Gastric Cancer: A Comprehensive Review.Cancers · 2024Review
- Depicting Biomarkers for HER2-Inhibitor Resistance: Implication for Therapy in HER2-Positive Breast Cancer.Cancers · 2024Review
Corrections and comments
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Authors and funding
24 authors at 20 institutions in 6 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundHuman epidermal growth factor receptor 2 (HER2)-positive metastatic gastric and gastroesophageal adenocarcinoma (GEA) is globally treated with chemotherapy plus trastuzumab. Novel therapeutic strategies strive to not only optimize efficacy, but also limit toxicities. In MAHOGANY cohort A, margetuximab, an Fc-engineered, anti-HER2 monoclonal antibody (mAb) was combined with retifanlimab, an anti-programmed cell death protein 1 mAb, in the first-line HER2-positive/programmed death-ligand 1 (PD-L1)-positive GEA. PATIENTS AND
methodsMAHOGANY cohort A part 1 is a single-arm trial to evaluate margetuximab plus retifanlimab in patients with HER2 immunohistochemistry 3+, PD-L1-positive (combined positive score ≥1%), and non-microsatellite instability-high tumors. Primary objectives for cohort A were safety/tolerability and the confirmed objective response rate (ORR).
resultsAs of 3 August 2021, 43 patients were enrolled and received margetuximab/retifanlimab. Nine grade 3 treatment-related adverse events (TRAEs) were reported in eight (18.6%) patients and eight serious TRAEs in seven (16.3%) patients. There were no grade 4/5 TRAEs. Three patients discontinued margetuximab/retifanlimab because of immune-related adverse events. The ORR by independent assessment was 53% [21/40 (95% confidence interval (CI) 36.1-68.5)], with a median duration of response of 10.3 months (95% CI 4.6-not evaluable); disease control rate was 73% [29/40 (95% CI 56.1-85.4)]. The study sponsor discontinued the study in advance of the planned enrollment when it became apparent that the study design would no longer meet the requirements for drug approval because of recent advances in the treatment of GEA.
conclusionsThe chemotherapy-free regimen of combined margetuximab/retifanlimab as first-line treatment in double biomarker-selected patients demonstrated a favorable toxicity profile compared with historical outcomes using chemotherapy plus trastuzumab. The ORR observed in this study compares favorably versus ORR observed with other chemotherapy-free approaches.
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