Compared to classic EGFR mutants, EGFR exon 20 mutants demonstrated a higher disease control rate at 6 and 12 months as well as higher ORR. Also, EGFR exon 20 mutants demonstrated significantly higher PFS (HR 0.45, p = 0.002) and OS (HR 0.2, p < 0.001)...EGFR exon 20 mutations are associated with superior outcome from immune checkpoint inhibitors compared to classic EGFR and HER-2 exon 20 mutations.