NRG1 and gallbladder cancer: For example, NRG1 fusions with CD74 are predominantly seen in non-small cell lung cancers (NSCLCs) [54, 55, 58, 59, 73], the NOTCH2-NRG1 fusion in gallbladders cancers [54], and the CDH1-NRG1 fusion in pancreatic ductal adenocarcinoma [26, 54, 55, 71, 72] (Table 2).