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Table 3 Region of EGFR mutation according to age group

From: Clinicopathological features and EGFR gene mutation status in elderly patients with resected non–small-cell lung cancer

  No. of patients
EGFRmutations Total ≥80 years <80 years
Exon 19 73 3 70
Exon 20 13 0 13
Exon 21 97 4 93
Combined 2 0 2