Advances in NSCLC Biomarker Testing

The current landscape of testing for NSCLC is complex, with many new biomarkers emerging rapidly, more points during which testing is possible, and precision drug treatments available on the basis of findings from biomarker testing. While promising for patients, the result of this rapidly changing landscape is confusion from interdisciplinary care teams as to what testing is necessary and when, who in multidisciplinary care teams should be ordering new tests and when, and what workflows are necessary for labs. Host David Ritter, MA is joined by Dr. Ying-Chun Lo and Dr. Mamatha Chivuluka to discuss what things pathologists and lab professionals need to know about emerging biomarkers for NSCLC. In this conversation, the panel reflects on how NSCLC biomarker testing has evolved over the past decade, highlighting the shift from limited, sequential testing to guideline-recommended broad molecular profiling. Drs. Lo and Chivuluka explore the clinical relevance of emerging biomarkers such as HER2, TROP2, and HER3, and discuss how new targeted therapies are influencing testing strategies in real-world practice. They also examine practical considerations for laboratories, including platform selection across IHC, PCR, and NGS, approaches to tissue stewardship in small lung biopsies, and the growing leadership role of pathologists in multidisciplinary teams to ensure timely, guideline-concordant, and equitable access to biomarker testing for patients with NSCLC.