Primary tumors and 68 metastases from 16 patients who died of metastatic breast cancer
were sequenced with both DNA whole-exome sequencing and RNA sequencing. DNA somatic
mutations, somatic copy number alterations, and RNA gene expression were called.
Biologic subtype was determined with the PAM50 predictor. Clonality was determined from
the DNA mutations. Genetic drivers were predicted using the DawnRank driver analysis
tool, integrating RNA expression, DNA mutations, and copy number.