Genetic Causes of Vascular Malformations and Common Signaling Pathways Involved in Their Formation

Area of Science:

• Genetics
• Molecular Biology
• Dermatology

Background:

• Vascular malformations are complex lesions with poorly understood genetic underpinnings.
• Somatic and germline mutations in key signaling pathways, including RAS/MAPK and PIK3/AKT/mTor, are increasingly recognized as causative.
• Advances in sequencing technology are crucial for identifying these genetic alterations.

Purpose of the Study:

• To elucidate the genetic basis of various vascular malformations.
• To highlight the role of specific molecular pathways in disease pathogenesis.
• To discuss optimal strategies for genetic mutation identification in clinical practice.

Main Methods:

• Review of current literature on genetic causes of vascular malformations.
• Analysis of the role of RAS/MAPK and PIK3/AKT/mTor pathway mutations.
• Comparison of next-generation sequencing (NGS) with Sanger sequencing for mutation detection.

Main Results:

• Genetic mutations are identified as a primary driver for vascular malformation development.
• RAS/MAPK and PIK3/AKT/mTor pathway activating mutations are consistently implicated across malformation types.
• NGS enables detection of low-level mosaic mutations missed by older methods.

Conclusions:

• Understanding the genetic etiology of vascular malformations is critical for advancing therapeutic strategies.
• The choice of tissue for genetic analysis and the type of vascular lesion influence diagnostic approaches.
• Accurate genetic diagnosis relies on utilizing advanced sequencing techniques tailored to the clinical presentation.