NTRK-Fusions - A new kid on the block

Area of Science:

• Oncology
• Molecular Biology
• Genetics

Background:

• Neurotrophic tyrosine receptor kinases (NTRK) are crucial for nervous system development and function.
• NTRK fusions with various genes are oncogenic, activating pathways like MAPK-ERK.
• These fusions are found in diverse pediatric and adult tumor types, including rare occurrences in lung cancer.

Purpose of the Study:

• To emphasize the oncogenic role of NTRK fusions in a wide range of malignancies.
• To highlight the therapeutic potential of TRK inhibitors as a tumor-agnostic strategy.
• To underscore the critical role of modern pathology in identifying targetable NTRK fusions.

Main Methods:

• Review of scientific literature on NTRK fusions and their clinical implications.
• Analysis of the role of NTRK fusions in oncogenesis and signal transduction.
• Discussion of diagnostic strategies for identifying NTRK fusions in various tumor types.

Main Results:

• NTRK fusions are oncogenic drivers in numerous tumor entities, irrespective of histology.
• Secretory breast cancer and congenital fibrosarcoma are pathognomonic for NTRK fusions.
• TRK inhibitors provide a targeted therapy option for NTRK fusion-positive cancers.

Conclusions:

• NTRK fusions represent a significant target for cancer therapy.
• Tumor-agnostic treatment strategies utilizing TRK inhibitors are emerging.
• Efficient and effective pathological identification of NTRK fusions is essential for patient management.