BCAR4 and lung adenocarcinoma: Recently, a fusion transcript of CD63–BCAR4 was also reported in a comprehensive genomic study of Chinese NSCLC patients.31 Fusion variants of ERBB3–BCAR4 were detected in two patients, one from a whole-genome-sequencing dataset of Chinese lung adenocarcinoma patients and another one from lung adenocarcinoma project of The Cancer Genome Atlas consortium (TCGA–LUAD) as demonstrated in Fig. 1e.