Fig. 4

Mutation signature contributions and structural variant counts by race/ethnicity and IHC subtype. Mutation signature contributions from a signature 8 and b HRD subdivided by race/ethnicity and IHC subtype. c Boxplots representing the number of SVs identified across WGS samples partitioned by race/ethnicity and IHC subtype. Asterisks denote significant differences (P < 0.05) between groups using Kruskal–Wallis tests followed by post-hoc comparisons with Dunn’s test. Each box represents the upper and lower quartiles of the data, and the median is depicted with a horizontal line. Upper and lower whiskers extend to the largest and smallest values within [1.5 × interquartile range], respectively