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Drug: Herceptin
Therapy: Neoadjuvant Chemotherapy Therapy
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Abstract 737: Clonal evolution of the HER2 L755S mutation as a mechanism of acquired HER-targeted therapy resistance
Conclusion: Acquired L/LT resistance in the two BT474 R lines is due to selection of HER2 L755S subclones present in parental cells. The higher HER2 L755S levels in BT474 parentals compared with other parentals, and detection of its subclonal presence in a pre-treatment HER2+ BC patient, suggest that sensitive mutation detection methods will be needed to identify patients with potentially actionable HER family mutations in primary tumor. Treating this patient group with an irreversible TKI like Afa may prevent resistance and improve clinical outcome of this subset of HER2+ BC.Citation Format: Xiaowei Xu, Agostina Nardone, ...
Source: Cancer Research - August 2, 2015 Category: Cancer & Oncology Authors: Xu, X., Nardone, A., Hu, H., Qin, L., Nanda, S., Heiser, L., Wang, N., Covington, K., Chen, E., Renwick, A., Mitchell, T., Shea, M., Wang, T., De Angelis, C., Contreras, A., Gutierrez, C., Fuqua, S., Chamness, G., Shaw, C., Li, M., Wheeler, D., Hilsenbeck Tags: Experimental and Molecular Therapeutics Source Type: research
