期刊
LYMPHOLOGY
卷 54, 期 1, 页码 12-22出版社
LYMPHOLOGY
关键词
SVEP1; lymphedema; NGS; genetic diagnosis
资金
- Provincia Autonoma di Trento [LP 6/99 (dgp 1045/2017)]
This study found rare heterozygous missense single-nucleotide variants in the SVEP1 gene in patients with lymphedema. Healthy family members carrying the same variants reported some subclinical edema. SVEP1 is proposed as a candidate gene to be sequenced in patients with lymphatic malformations to investigate its possible involvement in the development of lymphedema.
SVEP1, also known as Polydom, is a large extracellular mosaic protein with functions in protein interactions and adhesion. Since Svep1 knockout animals show severe edema and lymphatic system malformations, the aim of this study is to evaluate the presence of SVEP1 variants in patients with lymphedema. We analyzed DNA from 246 lymphedema patients for variants in known lymphedema genes, 235 of whom tested negative and underwent a second testing for new candidate genes, including SVEP1, as reported here. We found three samples with rare heterozygous missense single-nucleotide variants in the SVEP1 gene. In one family, healthy members were found to carry the same variants and reported some subclinical edema. Based on our findings and a review of the literature, we propose SVEP1 as a candidate gene that should be sequenced in patients with lymphatic malformations, with or without lymphedema, in order to investigate and add evidence on its possible involvement in the development of lymphedema.
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