Clustering of the tumour profiles of the MyBrCa samples according to IntClust5 and PAM502 (Fig. 1 and Supplementary Fig. 2, respectively) showed a higher prevalence of the Her2-enriched molecular subtypes, particularly IntClust 5 (13.1% in MyBrCa versus 7.9% in Caucasians; Fig. 1a) and the PAM50 Her2-enriched subtype (23.3% in MyBrCa versus 9.9% in Caucasians; Supplementary Fig. 2a). Here, ERBB2 is linked to neoplasm.