Correction to: npj Breast Cancer; https://doi.org/10.1038/npjbcancer.2016.17, Published online 8 June 2016

In the original version of the published article, line three of the third paragraph of the methods stated “Excluding patients with micrometastatic disease, the 5-year BCSM for patients with Recurrence Score results <18 and 1–3 positive nodes (n = 2,617) was 1.3% (95% CI, 0.6–2.9%).” To improve clarity this statement has been replaced with “Excluding patients with micrometastatic disease, there were 2,617 patients with 1–3 positive nodes. Of these, 1,487 also had Recurrence Score results <18 with 5-year BCSM of 1.3% (95% CI, 0.6–2.9%).” The original version of the published article also contained an error in the second sentence of the Figure 2 legend describing the mutation status of the patient population examined. The sentence in the original published version of the Article stated “Patients with HR+, HER2-positive, node-negative…” this has been changed to “Patients with HR+, HER2-negative, node-negative…”. This has been corrected in the PDF and HTML versions of this paper.