Prevalence of uncommon epidermal growth factor receptor (EGFR) alterations detected in circulating tumor DNA (ctDNA) of non-small cell lung cancer (NSCLC) patients from East Asia.

e21608Background: EGFR is the most commonly altered biomarker in East Asian NSCLC patients. Common driver mutations (L858R or exon 19 deletions (del)) are the focus of conventional hotspot testing ...