Moreover, Nakajima et al reported only one exon 19 deletion among 11 (9.9%) EGFR mutations in 43 EBUS-TBNA metastatic lung adenocarcinomas in East-Asian patients [37], whereas in primary lung adenocarcinomas exon 19 deletions account for as much as 53% of mutations in East Asian patients [47]. The gene discussed is EGFR; the disease is lung adenocarcinoma.