Nature Communications 6 Article number: 8971 (2015); Published 4 December 2015; Updated 5 February 2016

In the Results section of this Article, haematoxylin and eosin staining data from the TCGA repository are incorrectly referred to as immunohistochemistry data. All references to ‘immunohistochemistry’ or ‘IHC’ should read ‘haematoxylin and eosin staining’ or ‘H&E staining’, respectively.