Abstract:
BACKGROUND:Milroy-like disease is the diagnostic definition used for patients with phenotypes that resemble classic Milroy disease (MD) but are negative to genetic testing for FLT4. In this study, we aimed at performing a genetic characterization and biochemical analysis of VEGF-C variations found in a female proband born with congenital edema consistent with Milroy-like disease. METHODS:The proband underwent next-generation sequencing-based genetic testing for a panel of genes associated with known forms of hereditary lymphedema. Segregation analysis was performed on family members by direct sequencing. In vitro studies were performed to evaluate the role of a novel identified variant. RESULTS:Two VEGF-C variations were found in the proband, a novel p.(Ser65Arg) and a pathogenic c.148-3_148-2delCA, of paternal and maternal origin, respectively. Functional characterization of the p.(Ser65Arg) variation in vitro showed alterations in VEGF-C processing. CONCLUSIONS:Our findings reveal an interesting case in which biallelic variants in VEGF-C are found in a patient with Milroy-like lymphedema. These data expand our understanding of the etiology of congenital Milroy-like lymphedema.
journal_name
Mol Genet Genomic Medjournal_title
Molecular genetics & genomic medicineauthors
Mukenge S,Jha SK,Catena M,Manara E,Leppänen VM,Lenti E,Negrini D,Bertelli M,Brendolan A,Jeltsch M,Aldrighetti Ldoi
10.1002/mgg3.1389subject
Has Abstractpub_date
2020-09-01 00:00:00pages
e1389issue
9issn
2324-9269journal_volume
8pub_type
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