Sashimi plots representing the splicing patterns of some of these basal B-specific splicing events, such as the well-known splicing biomarker of cancer metastasis ENAH [26] and the newly identified splicing biomarkers PLOD2, SPAG9 and KIF13a, validated the observed changes in splicing between basal A and basal B-like patients (Fig. 4b-c and Additional file 1: Fig. S5a-b). This evidence concerns the gene SPAG9 and cancer.