Progress and potential of RAS mutation detection for diagnostics and companion diagnostics

Area of Science:

• Oncology
• Molecular Diagnostics
• Genetics

Background:

• RAS mutations are significant drivers of carcinogenesis.
• Understanding a tumor's RAS mutation status is vital for effective cancer therapy.
• RAS gene analysis is a key component of personalized cancer medicine.

Purpose of the Study:

• To review current practices in RAS testing for cancer.
• To highlight laboratory methods for RAS gene analysis.
• To discuss challenges and advancements in RAS mutation detection.

Main Methods:

• Polymerase Chain Reaction (PCR) for robust and cost-effective RAS status determination.
• Next-Generation Sequencing (NGS) platforms offering comprehensive mutation profiling but requiring specialized expertise.
• Analysis of pre-analytical variables impacting test accuracy for both PCR and NGS.

Main Results:

• Multiple validated laboratory methods exist for RAS gene analysis.
• NGS platforms are increasingly utilized but present interpretation complexities.
• External quality assurance is essential for reliable RAS testing outcomes.

Conclusions:

• RAS testing is essential for guiding cancer treatment.
• Advancements in molecular diagnostics, including NGS, are transforming RAS mutation detection.
• Emerging applications include liquid biopsies for circulating tumor DNA and cells.