This clinical trial consists of two parts: phase 2 and phase 3.
The goal of phase 2 of this clinical trial is to compare which dose level of AMT-116 works better to treat advanced or metastatic non-squamous EGFR-Wildtype non-small cell lung cancer (NSCLC) in adults. It will also learn about the safety of AMT-116. The main questions it aims to answer are:
* Which level of AMT-116 works better to treat advanced or metastatic non-squamous EGFR-Wildtype NSCLC?
* What medical problems do participants have when taking AMT-116? The goal of phase 3 of this clinical trial is to compare AMT-116 to study doctor's choice (a kind of retainable treatment for you in the opinion of the study doctor) to see if AMT-116 works better to treat advanced or metastatic non-squamous EGFR-Wildtype NSCLC.
In both parts of this trial, participants will receive AMT-116 or study doctor's choice every 2 weeks until the study doctor thinks you are benefiting from your participation or until your disease progresses or you are unable to tolerate the study drug