Identification of a Novel FLT4 c.3028A>C Variant Associated With Milroy Disease

VEGFR3 (FLT4) is crucial for embryonic lymphangiogenesis, and defects in this receptor can lead to congenital lymphedema type 1A (Milroy disease). This study analyses FLT4 gene sequence in 24 primary lymphedema patients, identifying genetic variants in five patients resembling typical Milroy disease. A novel likely pathogenic variant (c.3028A>C) was identified, and the pathogenicity of two previously described variants (c.3175G>C and c.3298T>C) was supported.