Erratum to: Niche-localized tumor cells are protected from HER2-targeted therapy via upregulation of an anti-apoptotic program in vivo (npj Breast Cancer (2017), 10.1038/s41523-017-0020-z)

Two references were mistakenly omitted from the first sentence of the introduction. Original text: Extracellular matrix (ECM) proteins produced by diverse tumor types protect tumor cells from death in response to various agents.^1,2,3,4 1. Sethi, T. et al. Extracellular matrix proteins protect small cell lung cancer cells against apoptosis: a mechanism for small cell lung cancer growth and drug resistance in vivo. Nat. Med. 5, 662–668 (1999). 2. Sherman-Baust, C. A. et al. Remodeling of the extracellular matrix through overexpression of collagen VI contributes to cisplatin resistance in ovarian cancer cells. Cancer Cell 3, 377–386 (2003). 3. Uhm, J. H., Dooley, N. P., Kyritsis, A. P., Rao, J. S. & Gladson, C. L. Vitronectin, a glioma-derived extracellular matrix protein, protects tumor cells from apoptotic death. Clin. Cancer Res. 5, 1587–1594 (1999). 4. Pupa, S. M. et al. Regulation of breast cancer response to chemotherapy by fibulin-1. Cancer Res. 67, 4271–4277 (2007). Corrected text: Extracellular matrix (ECM) proteins produced by diverse tumor types protect tumor cells from death in response to various agents.^1,2,3,4,5,6 1. Muranen, T. et al. Inhibition of PI3K/mTOR leads to adaptive resistance in matrix-attached cancer cells. Cancer Cell 21, 227–239 (2012). 2. Behbod, F. et al. An intraductal human-in-mouse transplantation model mimics the subtypes of ductal carcinoma in situ. Breast Cancer Res. 11, R66 (2009). 3. Sethi, T. et al. Extracellular matrix proteins protect small cell lung cancer cells against apoptosis: a mechanism for small cell lung cancer growth and drug resistance in vivo. Nat. Med. 5, 662–668 (1999). 4. Sherman-Baust, C. A. et al. Remodeling of the extracellular matrix through overexpression of collagen VI contributes to cisplatin resistance in ovarian cancer cells. Cancer Cell 3, 377–386 (2003). 5. Uhm, J. H., Dooley, N. P., Kyritsis, A. P., Rao, J. S. & Gladson, C. L. Vitronectin, a glioma-derived extracellular matrix protein, protects tumor cells from apoptotic death. Clin. Cancer Res. 5, 1587–1594 (1999). 6. Pupa, S. M. et al. Regulation of breast cancer response to chemotherapy by fibulin-1. Cancer Res. 67, 4271–4277 (2007). All subsequent references have been renumbered accordingly. These errors have now been corrected in the HTML and PDF versions of this article.