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Targeting gene fusions in glioma
1Yale Brain Tumor Center, Yale Cancer Center and Department of Neurology, Yale School of Medicine, New Haven, Connecticut, USA.
Purpose Of Review:
Glioma represents of variety of brain malignancies, the majority of which confer a poor prognosis despite treatment. With the widespread use of next-generation sequencing, gene fusions are being found in greater numbers. Gene fusions in glioma represent an opportunity to deliver targeted therapies to those with limited options for treatment.
Recent Findings:
Extensive studies on these gene fusions have shown that they can exhibit distinct phenotypes, such as PTPRZ1-MET fusions in secondary glioblastoma or FGFR3-TACC3 fusions in IDH wildtype gliomas. Responses have been observed with the use of targeted therapies but some have been short lived because of the development of treatment resistance.
Summary:
Increasing detection of gene fusions in glioma along with basket trials have helped define different fusion phenotypes and paved the way for targeted kinase inhibitor-based therapies. Targeting NTRK fusions has been the most successful fusion-guided therapy to date and evaluating all patients for these fusions may be warranted.
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