Dysregulation of Flt-1, a major receptor for vascular permeability factor (
VPF), may provide a mechanism for the development of proteinuria in minimal
change nephropathy (MCN). The gene for Flt-1 has a polymorphic dinucleotid
e repeat. We have demonstrated an 88% predominance of one allele and an 80%
rate of homozygosity for this polymorphism with no association with MCN.