Lazertinib

The primary purpose of the study is to assess how well amivantamab in combination with lazertinib or in combination with chemotherapy works (antitumor activity) in participants with epidermal growth factor receptor mutated (EGFRm) non-small cell lung cancer (NSCLC; that is one of the major types of lung cancer).

As the 3rd generation, EGFR TKI has become a standard treatment option for the 1st line therapy in EGFR mutated patients, the necessity for evaluating resistant mechanism to determine the matched subsequent therapeutic option has been highlighted. From the 1st line Osimertinib treatment, the heterogenous resistance mechanism has been observed showing most commonly by MET amplification (7-15%) followed by additional on-target EGFR mutation (6-10%), BRAF, PI3KCA, KRAS, HER2 mutation (13-14%) and still 40 to 50% remain unknown for the mechanism. (A. Leonetti et al.British Journal of Cancer(2019)) Based on the observation showing the MET amplification as the most common resistance mechanism to the 3rd generation EGFR TKI treatment, the "TATTON" study, a multi-arm, phase IB trial, demonstrated early clinical data of Osimertinib in combined with savolitinib. Among the patients, c-MET amplified patients who were previously treated with 3rd generation EGFR TKI, a combination of Osimertinib and savolitinib, showed an objective response rate of 33% and median PFS of 5.5 months. (G. Oxnard et al. Annals of Oncology(2020)) The clinical efficacy of Osimertinib with savolitinib in MET overexpressed or amplification patients are reported from the global phase II, "SAVANNAH" study. The preliminary results from the SAVANNAH trial showed that Osimertinib plus savolitinib demonstrated an objective response rate of 49% in patients with a high level of MET overexpression and/or amplification, defined as IHC90+ and/or FISH 10+, whose disease progressed on treatment with Osimertinib. The highest ORR was observed in patients with a high level of MET who were not treated with prior chemotherapy (52%). In patients whose tumors did not show a high level of MET, the ORR was 9% (MJ Ahn, WCLC, 2022). There are ongoing global Phase III SAFFRON study to validate the outcome from SAVANNAH study. It has been reported that around 62% of tumor in Osimertinib progressed sample has MET overexpression and/or amplification, and more than one-third (34%) met the defined high MET level cut-off. As Lazertinib is about to be approved as the treatment option for the treatment naïve EGFR mutated NSCLC, it is also becoming important to develop a further treatment plan based on the MET amplification status. In this study, the investigators designed a phase II study based on the MET amplification status to evaluate the clinical efficacy of Lazertinib + tepotinib.

The purpose of this study is to assess the ability to slow down or stop the growth of cancer with amivantamab combined with either lazertinib or chemotherapy (carboplatin and pemetrexed) in participants with resectable, epidermal growth factor receptor (EGFR) mutated, Stage II-IIIB non-small cell lung cancer (NSCLC). NSCLC is the most common type of lung cancer. NSCLC may occur due to mutations (changes) in many genes, including EGFR.

The purpose of this study is to assess the anti-tumor activity and safety of amivantamab which will be administered as a co-formulation with recombinant human hyaluronidase PH20 (rHuPH20) (subcutaneous co-formulation \[SC-CF\]) in combination treatment (all cohorts except Cohort 4) and to characterize the safety of amivantamab SC-CF (Cohort 4).