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Updated: May 22, 2025
Novel Sequence Discovery by Subtractive Genomics
Published on: January 25, 2019
A Novel CLTC::RPS6KB1 Fusion in a Poorly Differentiated Carcinoma Involving the Lung and Mediastinum
Mitchell Zhao1, Nicholas Protopsaltis1, Mina Sabet1
1Department of Pathology and Laboratory Medicine, University of California San Diego, La Jolla, California, USA.
Abstract:
Cancer genetics studies have dramatically advanced the understanding of the molecular drivers in various types of neoplasms. This progress is also leading to the discovery of more new molecular agents to block those drivers, which has significantly improved cancer patient survival, especially in non-small cell lung cancer (NSCLC). However, in about 25% of NSCLC tumors molecular drivers are not yet known. Herein, we present a poorly differentiated carcinoma involving lung and mediastinum. Next generation sequencing-based RNAseq identified a novel fusion, CLTC::RPS6KB1, while no other known drivers were present.
Insights
Researchers discovered a new CLTC::RPS6KB1 gene fusion in a lung and mediastinum cancer. This finding could help identify unknown drivers in non-small cell lung cancer (NSCLC) cases.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Cancer genetics research has improved understanding of molecular drivers and led to targeted therapies.
- Significant advancements in patient survival have been observed, particularly in non-small cell lung cancer (NSCLC).
- However, a notable percentage of NSCLC cases (~25%) lack identified molecular drivers.
Purpose of the Study:
- To investigate the molecular underpinnings of a poorly differentiated carcinoma of the lung and mediastinum.
- To identify novel molecular drivers in NSCLC cases where known drivers are absent.
Main Methods:
- Utilized next-generation sequencing (NGS)-based RNA sequencing (RNAseq) for comprehensive transcriptomic analysis.
- Performed molecular profiling on a poorly differentiated carcinoma sample.
Main Results:
- Identified a novel gene fusion, CLTC::RPS6KB1, in the studied tumor.
- Confirmed the absence of other known oncogenic drivers in this specific case.
Conclusions:
- The CLTC::RPS6KB1 fusion represents a potential novel molecular driver in NSCLC.
- This discovery may contribute to the identification of previously unknown drivers in a subset of NSCLC patients.
- Further research is warranted to explore the functional significance and therapeutic implications of this fusion.
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