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Updated: Jun 27, 2025

Author Spotlight: Advancements in Molecular Biomarker Testing for Non-Squamous Non-Small Cell Lung Cancer
Published on: September 8, 2023
Non-Small Cell Lung Cancer Metastatic Without Oncogenic Alterations
1Charité-Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Department of Infectious Diseases and Pulmonary Medicine, Berlin, Germany.
Abstract:
This overview provides a thorough review of current treatment approaches for first-line management of nononcogenic addicted non-small cell lung cancer. We also address pertinent clinical decision-making queries encountered in everyday practice, such as the optimal treatment strategy for PD-L1-high patients, predictive factors for response to immune checkpoint inhibitors (ICI) both in terms of patient and cancer characteristics, the potential benefits of dual checkpoint blockade, and the unresolved issue of safe discontinuation strategies for long-term responders. Around one in five patients falls into this latter category while the majority develop either primary or acquired resistance to ICI-based first-line therapy, necessitating effective subsequent lines of treatment. Docetaxel, with or without combination of antiangiogenic agents, serves as the backbone of treatment, although evidence in the post-ICI setting is limited. Given that an inflamed tumor microenvironment (TME) is crucial for ICI responses, targeting the TME in cases of acquired resistance alongside continued ICI administration appears rational, although clinical trials so far have failed to confirm this hypothesis. Antibody-drug conjugates have emerged as a promising treatment modality, offering the potential for reduced toxicity and improved efficacy by targeting specific cancer antigens. Moreover, several chemotherapy-free approaches are currently under investigation for treatment-naïve patients, including alternative ICI and drugs targeting epitopes on both cancer and immune cells.
Insights
This review covers first-line treatments for non-small cell lung cancer, focusing on immune checkpoint inhibitors (ICI) and resistance. It explores optimal strategies, predictive factors, and novel therapies like antibody-drug conjugates for improved patient outcomes.
Area of Science:
- Medical Oncology
- Immunotherapy
- Thoracic Cancers
Background:
- Non-small cell lung cancer (NSCLC) treatment landscape is evolving, particularly for first-line management.
- Immune checkpoint inhibitors (ICI) have revolutionized NSCLC therapy, but challenges remain regarding patient selection, resistance, and long-term management.
- Understanding treatment resistance and identifying predictive biomarkers are crucial for optimizing patient care.
Purpose of the Study:
- To provide a comprehensive overview of current first-line treatment strategies for NSCLC.
- To address key clinical decision-making questions regarding ICI therapy in NSCLC.
- To review emerging therapeutic modalities and future directions in NSCLC treatment.
Main Methods:
- Literature review of current treatment approaches for first-line NSCLC.
- Analysis of clinical decision-making queries related to ICI therapy.
- Evaluation of evidence for various treatment strategies, including chemotherapy, ICI, and novel agents.
Main Results:
- Optimal strategies for PD-L1-high NSCLC patients are discussed, alongside predictive factors for ICI response.
- The benefits of dual checkpoint blockade and safe discontinuation strategies for long-term responders are examined.
- Docetaxel-based regimens remain a backbone for post-ICI treatment, though evidence is limited; novel agents like antibody-drug conjugates show promise.
Conclusions:
- Effective management of NSCLC requires careful consideration of patient and tumor characteristics to optimize ICI therapy.
- Addressing primary and acquired resistance to ICI is critical, necessitating further research into combination strategies and novel agents.
- Emerging chemotherapy-free approaches and antibody-drug conjugates represent promising future directions for NSCLC treatment.
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