Two rare PROX1 variants in patients with lymphedema.

Abstract:

BACKGROUND:The PROX1 gene is specifically expressed in a subpopulation of endothelial cells that, by budding and sprouting, give rise to the lymphatic system. It also plays a critical role in neurogenesis and during development of many organs, such as the eye lens, liver, and pancreas. METHODS:We used next-generation sequencing (NGS) to sequence the DNA of a cohort of 246 Italian patients with lymphatic malformations. We first investigated 29 known disease-causing genes: 235 of 246 patients tested negative and were then retested for a group of candidate genes, including PROX1, selected from a database of mouse models. The aim of the study was to define these patients' genotypes and explore the role of the candidate gene PROX1 in lymphedema. RESULTS:Two of 235 probands were found to carry rare heterozygous missense variants in PROX1. In silico analysis of these variants-p.(Leu590His) and p.(Gly106Asp)-indicates that the overall protein structure was altered by changes in interactions between nearby residues, leading to functional protein defects. CONCLUSIONS:Our results suggest that PROX1 is a new candidate gene for predisposition to lymphedema.

journal_name

Mol Genet Genomic Med

authors

Ricci M,Amato B,Barati S,Compagna R,Veselenyiova D,Kenanoglu S,Stuppia L,Beccari T,Baglivo M,Kurti D,Krajcovic J,Serrani R,Dundar M,Basha SH,Chiurazzi P,Bertelli M

doi

10.1002/mgg3.1424

subject

Has Abstract

pub_date

2020-10-01 00:00:00

pages

e1424

issue

10

issn

2324-9269

journal_volume

8

pub_type

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