Lazertinib Real-world Observational Study of in Pre-treated EGFR T790M Mutant With Advanced Non-small Cell Lung Cancer

* It is to evaluate the safety and effectiveness of a lasertinib(LECLAZA) single drug in a actual medical environment for patients 1. Primary Purpose: Progression-free survival (PFS) 2. Secondary Purpose: * Objective response rate * Time to treatment failure * Adverse event (AE), serious adverse event (SAE), and adverse event of special interest (AESI) * Severity of (S)AE * duration of response (DoR) * Overall survival (OS) * Intravenous Progressive Survival Period (Intracranial PFS) * Relative dose intensity * Research Design : a Multi-Center Prospective and Restrospective Cohort Study