Indian Journal of Paediatric Dermatology

: 2021  |  Volume : 22  |  Issue : 1  |  Page : 1--11

Genetics of Vascular Malformations: Current Perspectives

Kin Fon Leong 
 Paediatric Dermatology Unit, Women and Children Hospital, Kuala Lumpur, Malaysia

Correspondence Address:
Kin Fon Leong
Paediatric Dermatology Unit, Hospital Tunku Azizah, Jalan Pahang, 50586, Kuala Lumpur

For decades, vascular anomalies are categorized as either vascular tumors or malformations based on their onset, clinical course, radiologic, and histologic features. Owing to the heterogeneity of vascular anomalies, they are frequently misdiagnosed. With the advent of massively parallel next-generation sequencing, the molecular landscape of vascular anomalies is rapidly evolving and recent discoveries have shed light on the genetic basis and classification of these vascular disorders. The genotype-phenotype correlation will provide a more precise classification of vascular anomalies and form the basis for future targeted pharmacologic therapy. Thus far, inhibitor of mTOR, AKT1, and PIK3CA (sirolimus, miransertib, and alpelisib) have promising clinical results. In vascular malformations, majority of sporadic cases are due to somatic mutations that disrupt the main endothelial receptor intracellular signaling pathways, i.e., PIK3CA-AKT-mTOR, RAS - MAPK – ERK, and SMAD signaling pathways. Most of the sporadic vascular malformations are caused by somatic mutations that are acquired after fertilization, instead of being inherited from his parents. In general, this type of mosaicism is not inherited, except when the mutation affects the gonads.

How to cite this article:
Leong KF. Genetics of Vascular Malformations: Current Perspectives.Indian J Paediatr Dermatol 2021;22:1-11

How to cite this URL:
Leong KF. Genetics of Vascular Malformations: Current Perspectives. Indian J Paediatr Dermatol [serial online] 2021 [cited 2021 Jan 23 ];22:1-11
Available from:;year=2021;volume=22;issue=1;spage=1;epage=11;aulast=Leong;type=0