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Updated: May 22, 2025

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Published on: June 15, 2020
Targeted Therapies for Slow-Flow Vascular Malformations
Grace X Li1,2, Deshan F Sebaratnam1,2, James P Pham1,2
1Faculty of Medicine and Health, University of New South Wales, Kensington, New South Wales, Australia.
Abstract:
Advances in genetic sequencing technologies have enabled the identification of key activating somatic variants in cellular signalling pathways involved in the pathogenesis of vascular malformations. Given that these genetic variants are also implicated in the pathogenesis of several cancers, the repurposing of targeted therapies developed in oncology has been increasingly investigated for treating vascular malformations. This review provides an update on the current evidence for targeted therapies in slow-flow vascular malformations, particularly in the context of gain-of-function variants in the PI3K/AKT/mTOR pathway.
Insights
Targeted therapies, initially developed for cancer, show promise for treating vascular malformations. This review focuses on therapies targeting the PI3K/AKT/mTOR pathway, driven by genetic variants.
Area of Science:
- Genetics and Molecular Biology
- Oncology
- Vascular Biology
Background:
- Genetic sequencing identifies somatic variants in vascular malformation pathogenesis.
- These variants are also implicated in cancer development.
- Targeted therapies from oncology are being explored for vascular malformations.
Purpose of the Study:
- To review current evidence on targeted therapies for slow-flow vascular malformations.
- To focus on therapies targeting the PI3K/AKT/mTOR pathway.
- To examine the role of gain-of-function variants in treatment strategies.
Main Methods:
- Literature review of genetic sequencing and targeted therapy studies.
- Analysis of evidence for PI3K/AKT/mTOR pathway inhibitors.
- Focus on slow-flow vascular malformations.
Main Results:
- Growing evidence supports targeted therapies for vascular malformations.
- Gain-of-function variants in PI3K/AKT/mTOR pathway are key targets.
- Oncology-derived therapies demonstrate efficacy in preclinical and clinical settings.
Conclusions:
- Targeted therapies, particularly those inhibiting the PI3K/AKT/mTOR pathway, offer a promising treatment avenue for vascular malformations.
- Understanding the genetic basis of these malformations is crucial for personalized treatment.
- Repurposing cancer therapies holds significant potential for improving patient outcomes.
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