Figure 4: Analysis of mutation context identifies two signatures in myeloma.

(a) Mutation context identifies two signatures in myeloma, Signature A and Signature B. (b) t(14;16) and t(14;20) samples have significantly more mutations than other translocation groups. (c) The mutational context split by translocation group identifies t(14;16) and t(14;20) with more mutations which make up Signature B. (d) Stacked bar chart showing the percentage contribution of the two signatures identified by NMF in each sample, ordered by translocation group. The box and whisker plots show the 10 and 90 percentiles (whiskers) and the median and 25 and 75 percentiles (box). P values determined by analysis of variance.