This phase Ib/II study (NCT03381274) evaluated the anti-CD73 antibody oleclumab plus the third-generation EGFR TKI osimertinib in advanced EGFR-mutated NSCLC….In patients who were T790M-negative in tumor and ctDNA, ORR was 25.0% at DL1 and 11.8% at DL2 (all partial responses); response durations at DL2 were 14.8 and 16.6 months....Oleclumab plus osimertinib showed evidence of moderate activity with acceptable tolerability in previously treated patients with advanced EGFR-mutated NSCLC.