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Updated: Jan 13, 2026

Author Spotlight: Advancements in Molecular Biomarker Testing for Non-Squamous Non-Small Cell Lung Cancer
Published on: September 8, 2023
First Report of Entrectinib as a Treatment Option for Pure Squamous Cell Carcinoma Harboring ROS1 Rearrangement:
Yan-Jei Tang1,2, Rung-Hsuan Chen1,3, Yung-Shin Lu1,3
1College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.
Abstract:
Lung cancer remains the leading cause of cancer-related mortality worldwide, with non-small cell lung cancer (NSCLC) accounting for the majority of cases. Among the NSCLC subtypes, squamous cell carcinoma (SCC) is less frequently associated with actionable genetic alterations. Herein, we present the first known case of ROS1 rearrangement in pure SCC, identified using next-generation sequencing (NGS), and successfully treated with entrectinib for approximately one year. This case highlights the potential of ROS1 as a therapeutic target in SCC, which has historically been considered rare, as ROS1-rearranged SCC accounts for only 0.2% according to the Foundation Medicine database. This underscores the importance of incorporating NGS into clinical practice, particularly for never smokers/light smokers or patients with advanced SCC of the lungs, to identify targetable mutations and guide personalized therapy.
Insights
This study reports the first case of ROS1 rearrangement in squamous cell carcinoma (SCC) of the lung. The patient responded well to entrectinib, highlighting ROS1 as a potential therapeutic target in SCC.
Area of Science:
- Oncology
- Genetics
- Thoracic Medicine
Background:
- Lung cancer is a leading cause of mortality globally.
- Non-small cell lung cancer (NSCLC) comprises most lung cancer cases.
- Squamous cell carcinoma (SCC), an NSCLC subtype, rarely has actionable genetic alterations.
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