Behandlung der Patientinnen mit HER2- (ErbB2-) positivem Mammakarzinom

作者: M. Untch , C. Jackisch

DOI: 10.1007/S00761-009-1648-6

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摘要: Die Identifikation von prognostischen und pradiktiven Faktoren hat fur die Effektivitat der Therapie bei Brustkrebspatientinnen eine sehr grose Bedeutung. Der epidermale Wachstumsfaktorrezeptor 2 (HER2, ErbB2) wird etwa 20% aller invasiven Mammakarzinome uberexprimiert. Dies ist mit einer schlechten Prognose kurzerem rezidivfreiem Uberleben Gesamtuberleben assoziiert. gegen HER2 gerichtete Antikorper Trastuzumab konnte uber alle Therapielinien hinweg einen meist signifikanten Benefit HER2-positiven Patientinnen im Vergleich zu herkommlichen Therapien demonstrieren. Dennoch gibt es substanzielle Anzahl Patientinnen, nicht auf den ansprechen oder rezidivieren. Fur diese steht dem Tyrosinkinasehemmer Lapatinib, unterschiedlichen Angriffspunkt an HER2-vermittelten Signalkaskade aufweist, weitere Option zur Verfugung. Mogliche synergistische Effekte werden derzeit in grosen randomisierten Studien gepruft, denn bestmogliche Therapiestrategie Mammakarzinomen nach wie vor eindeutig definiert.

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