We have characterized 5 novel, single-nucleotide polymorphisms in the promoter and 5' UTR regions of the human vascular endothelial growth factor (VEGF) gene. Transitions C --> A at nucleotide position -2578 relative co the translation start sire, T --> C at position -1455, G --> A at position -1154, G --> C at position -1001, and C --> T at position -7 were observed. In addition, individuals with the A allele at position -2578 also had an insertion of 18 nucleotides, whereas CC homozygotes did not contain this insert ion. We have described the frequency distribution of the poly-morphic alleles in the population of healthy volunteers and are investigating the functional significance of the 18-nucleotide insertion and of the single-nucleotide polymorphisms on VEGF gene expression. (C) American Society for Histocompatibility and Immunogenetics, 1999. Published by Elsevier Science Inc.