A Study of Lazertinib as Monotherapy or in Combination With Amivantamab in Participants With Advanced Non-small Cell Lung Cancer

Inclusion criteria

• ✓. Expansion Cohort A: Participant must have advanced or metastatic EGFR-mutated non-small cell lung cancer (NSCLC) that has progressed on prior treatment with osimertinib in the first or second line, followed by progression on a platinum-based chemotherapy regimen as the last line of therapy prior to study enrollment. Prior use of first or second generation EGFR tyrosine kinase inhibitor (TKI) is allowed if administered prior to osimertinib
• ✓. Expansion Cohort B: Participant must have previously treated, advanced or metastatic NSCLC with documented primary EGFR Exon 20ins activating mutation. Participants should have been treated with standard of care, platinum-based chemotherapy regimens, but may have treated with approved EGFR TKI, investigational EGFR, or immunotherapy agents if refusing front line platinum-based chemotherapy standard of care. Up to 3 lines of prior systemic anti-cancer treatment are allowed
• ✓. Expansion Cohort C: Participant must have advanced or metastatic NSCLC characterized by an uncommon activating mutation Additional uncommon EGFR mutations/alterations, beyond those listed above, may be considered for enrollment after agreement with the medical monitor. Participants may be treatment naïve or have been treated with one prior line of therapy which must be a first or second generation TKI (that is gefitinib, erlotinib, afatinib) in the most recent line of therapy. Prior chemotherapy is allowed if administered prior to EGFR TKI therapy, or as the only systemic anti-cancer therapy prior to study enrollment. Up to 2 lines of prior systemic anti-cancer treatment are allowed
• ✓. Expansion Cohort D, E, and F: Participant must have advanced or metastatic EGFR-mutated NSCLC (EGFR Exon19 deletion or L858R) that has progressed on prior treatment with osimertinib in the first or second line (after first- or second-generation EGFR TKI), as the immediate prior line of therapy. Only previous treatment in the metastatic setting with a first, second, or third generation EGFR TKI is allowed. In addition, participants considered for Cohorts E and F must be eligible for, and agree to comply with, the use of prophylactic anticoagulation with a direct oral anticoagulant or a low molecular weight heparin during the first 4 months (from Day 1 through Day 120) according to national comprehensive cancer network (NCCN) or local guidelines, if assigned to the combination Cohort E