Small question of the paper “Passenger Mutations in More Than 2,500 Cancer Genomes: Overall Molecular Functional Impact and Consequences”

Q:
Recently, I read a paper which was published in Cell, titled "Passenger Mutations in More Than 2,500 Cancer Genomes: Overall Molecular Functional Impact and Consequences". Cause of my research topic was similar with this paper, just one of question about Figure 2B. In this heatmap, I saw totally 80 motifs on the bottom, but only 70 rows up to them, I was a little bit confused how did you know the ETS motif matched to the marked row?

A:
The rows in the figure correspond to different cancer cohorts or meta-cohorts. We also provide this information on the cancer cohort with significant differential burdening in Supplement 1 in the paper.