Whole-genome sequencing provides new insights into the clonal architecture of Barrett's esophagus and esophageal adenocarcinoma

Rebecca Fitzgerald and colleagues report whole-genome sequence analyses of 23 paired samples of Barrett's esophagus and esophageal adenocarcinoma. Their analyses of the clonal architecture of these lesions shows that copy number increases and heterogeneity persists during development of esophageal adenocarcinoma.