マル薬剤師
41 posts


薬剤師に聞きづらいこと、 ありますか? 実はどんなことでも 聞いてもらって大丈夫です。 「こんなこと聞いていいのかな」 が一番聞いてほしいことだったりします。 気軽に声かけてください🙏 #薬剤師 #服薬指導







【T-DXdの耐性メカニズム】 🔍Mechanisms of T-DXd resistance unveiled: HER2 loss & binding mutations, overcome by dual-ADC combo. 📚Cancer Discov 2025 pubmed.ncbi.nlm.nih.gov/41212147/ 🔑Key Results 🔬 Major decrease in HER2 expression observed in 49% of T-DXd resistant cases; 52% of those had complete loss 🧬 Rare ERBB2 extracellular domain mutations (e.g., V597M) impair T-DXd internalization 📈 Low-dose combo of T-DXd + Dato-DXd (shared payload) outperformed high-dose monotherapy in models 🗣️Discussion 🤔 HER2 loss is driven by selective pressure, esp. in HER2-low tumors ⚠️ Binding mutations are rare but critical for intrinsic resistance despite high expression 💡 Combining ADCs with distinct targets but shared payloads offers a strategy to enhance delivery & limit toxicity
















