Liquid biopsy plays a pivotal role in cancer therapeutics, encompassing critical applications such as early cancer detection, disease progression monitoring, and tailored treatment plan formulation, heralded as a pivotal avenue for the future of cancer management. Established in 2015, LifeOS Genomics Co., Ltd. stands among the select few domestic enterprises pioneering the autonomous development of digital Polymerase Chain Reaction (PCR) technology. The company's automated nucleic acid amplification quantitative analysis platform (QLoci™ md1000 Analyzer) demonstrates outstanding proficiency, featuring sixty thousand wells per PCR chip. Integrating digital PCR technology, it elevates analytical sensitivity beyond 0.1%. LifeOS commissioned the Core Laboratory of Pharmacogenomics at the National Taiwan University to conduct clinical validation assessments for their developed "EGFR T790M Mutation Detection Assay Kit." This assay kit secured official registration by the Taiwan Food and Drug Administration (TFDA) as a Laboratory Developed Test (LDT) in 2023, permitting the issuance of medical testing reports.

This initiative aims to validate the detection capabilities of LifeOS Genomics Co., Ltd.'s "EGFR T790M Mutation Detection Assay Kit" prospectively clinically in clinical lung cancer patient plasma samples, addressing unmet clinical needs for early cancer detection, disease progression monitoring, and aiding physicians in diagnosis and pharmacotherapy.

Inclusion Criteria:

1. aged ≥18 years old.
2. Patients with Stage IIIB or IV non-small cell lung cancer (NSCLC) with EGFR mutations.

Exclusion Criteria:

1. Pregnant women.
2. Any condition that, in the opinion of the doctors, may pose a severe risk to the patient or interfere with trial results or participation.

Late stage NSCLC patients with EGFR activating mutations