Sample preparation, library construction, targeted capture, next-generation sequencing, and bioinformatic analyses of tumor and normal samples were performed as previously described (23 , 37 (link)). Briefly, DNA was extracted from matched FFPE or frozen tumor tissue and buffy coat samples using the Qiagen DNA FFPE Tissue Kit or Qiagen DNA Blood Mini Kit (Qiagen GmbH). Genomic DNA from tumor and normal samples was fragmented and used for Illumina TruSeq library construction (Illumina) as previously described (23 , 37 (link)). Targeted regions of interest were captured using Agilent SureSelect in-solution capture reagents and a custom targeted panel for genes of interest according to the manufacturer’s instructions (Agilent). Paired-end sequencing, resulting in 150 bases from each end of the fragment for targeted libraries, was performed using the Illumina MiSeq (Illumina).