Zusammenfassung
Neben Chemo-, Radio- und antihormoneller Therapie sind Antikörper mittlerweile ein wichtiger Bestandteil der Therapie beim Mammakarzinom. Trastuzumab ist der erste zugelassene humanisierte monoklonale Antikörper zur Behandlung des Mammakarzinoms. Dieser ist gegen den humanen epidermalen Wachstumsfaktor-Rezeptor-2 (Her-2/neu) gerichtet, der bei 20–25% aller humanen Mammakarzinome überexprimiert ist. Trastuzumab ist als Monotherapie oder in Kombination mit unterschiedlichen Chemotherapien für metastasierte Patientinnen indiziert, deren Tumor eine Her-2/neu-Überexpression aufweist. In der adjuvanten Situation wurde eine Verbesserung des rezidivfreien und Gesamtüberlebens nachgewiesen. Erste Untersuchungen zu Bevacizumab, einem VEGF-spezifischen Antikörper, zeigen viel versprechende Ergebnisse in der metastasierten Situation des Mammakarzinoms. Weitere Antikörper (Cetuximab) und sog. Tyrosinkinaseinhibitoren (Gefitinib, Erlotinib, Lapatinib), die ebenfalls Rezeptoren blockieren, werden derzeit in Studien auf ihre Wirksamkeit untersucht.
Abstract
Besides radio- and chemotherapy, antibodies are one of the most effective substances in breast cancer therapy. Trastuzumab is the first humanized monoclonal antibody that specifically targets human epidermal growth factor receptor-2 (Her-2/neu) breast cancer cells, which are overexpressed in about 20–25% of breast carcinomas. For tumors overexpressing Her-2/neu, trastuzumab is applied as monotherapy or in combination with chemotherapies. Its application is an established part of systemic therapy in metastastic breast cancer, and data on its use in the adjuvant setting show significantly better relapse-free survival. The vascular endothelial growth factor-specific antibody bevacizumab shows good results if applied in the metastatic situation. Further antibodies (cetuximab) and tyrosine kinase inhibitors (gefitinib, erlotinib, lapatinib) are currently under evaluation in studies.
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Ditsch, N., Kahlert, S., Lenhard, M. et al. Immunologische Therapie beim Mammakarzinom. Onkologe 12, 945–954 (2006). https://doi.org/10.1007/s00761-006-1120-9
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DOI: https://doi.org/10.1007/s00761-006-1120-9