Table 1.

The summary of EGFR mutations by nonenriched and enriched PCR assays

EGFR exon 19 mutation
EGFR exon 21 mutation
Nonenriched (%)Enriched (%)Nonenriched (%)Enriched (%)
Lung cancer
    Resected tumor (n = 108)16 (15)17 (16)17 (16)20 (19)
    CT-guided biopsy (n = 18)4 (22)4 (22)1(6)3 (17)
    Pleural fluid (n = 20)3 (15)5 (25)2 (10)2 (10)
Nonmalignant specimen
    Peripheral lung (n = 30)0000
    Pleural fluid (n = 5)0000
  • NOTE: n, no. sample. Nonenriched, direct sequencing and nonenriched PCR assay. Enriched, mutant-enriched PCR assay. CT-guided biopsy, CT-guided needle lung biopsy.