Level C· Early human research exploring benefitsCohort StudyEurope PMCOpen access

Two rare PROX1 variants in patients with lymphedema

Ricci M., Amato B., Barati S., Compagna R., Veselenyiova D., Kenanoglu S.

Cohort Study with a reported sample of 246, published in Mol Genet Genomic Med (2020) — summary generated from the PubMed abstract.

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Level C· Early human research exploring benefitsEvidence level of this study

Early human evidence such as case series or small samples is exploring possible benefits.

  • Level A · Stronger Clinical Evidence
  • Level B · Emerging clinical evidence with positive signals
  • Level C · Early human research exploring benefits
  • Level D · Scientific groundwork from lab and animal studies
  • Emerging · Emerging topic under active research
Read the A–D evidence level guide

This page is generated from the PubMed record. The Thai description is an automated summary of bibliographic fields and the abstract, not a full translation, and is not medical advice.

Study type
Cohort Study
Journal
Mol Genet Genomic Med (2020)
Reported sample size
246
Source database
Europe PMC
PMID
32757260
PMCID
PMC7549596
DOI
10.1002/mgg3.1424
Citations
7

Abstract (original English)

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.

What this study does not prove

  • • This study does not prove SVF is an approved treatment or a replacement for standard care.

Evidence level

Early human evidence such as case series or small samples is exploring possible benefits.

How we grade evidence
HumansLymphedemaHomeodomain ProteinsTumor Suppressor ProteinsPedigreeHeterozygotePhenotypeMutation, MissenseAdultAged

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