Table 2A.

EGFR amplification incidence and characteristics in the Foundation Medicine GEA database (August 2012–November 2017)

All GEA casesEGJGastric
Patients, n4,6452,5342,111
EGFR amp (%)259 (5.6)181 (7.1)78 (3.7)
Median EGFR CN (range)40 (8–375)39 (8–375)44 (8–281)
EGFR ≥ 50 copies119 (46%; 2.6% overall)8237
Median age, y (range) for EGFR amp63 (27–90)63 (32–84)62.5 (27–90)
Gender for EGFR amp47 F:212 M19 F:162 M28 F:50 M
  • Abbreviation: CN, copy number.