Table 3. Frequency distributions of VEGF and VEGFR-2 SNPs and PFS.
| SNP | Genotype | N | Median PFS (months) | Log rank test |
|---|---|---|---|---|
| VEGF SNPs | ||||
| −2578C/A | CC | 22 | 10.4 | P=0.9813 |
| AC | 22 | 13.1 | ||
| AA | 13 | 10.8 | ||
| −1498T/C | TT | 22 | 10.4 | P=0.9503 |
| CT | 22 | 13.1 | ||
| CC | 13 | 10.8 | ||
| −1154G/A | GG | 8 | 10.8 | P=0.3398 |
| AG | 19 | 13.4 | ||
| AA | 30 | 10.4 | ||
| −634G/C | GG | 26 | 13.4 | P=0.8300 |
| CG | 18 | 10.5 | ||
| CC | 13 | 16.2 | ||
| 936C/T | CC | 43 | 11.8 | P=0.7378 |
| CT | 13 | 10.8 | ||
| TT | 1 | 22.3 | ||
| VEGFR-2 SNPs | ||||
| −604A/G | AA | 15 | 20.7 | P=0.3224 |
| AG | 29 | 12 | ||
| GG | 13 | 9.9 | ||
| 1192C/T | CC | 51 | 11.8 | P=0.9314 |
| CT | 6 | 14.7 | ||
| TT | 0 | — | ||
| 1719A/T | AA | 1 | 20.7 | P=0.4762 |
| AT | 13 | 16.2 | ||
| TT | 43 | 10.8 | ||
Abbreviations: PFS=progression-free survival; SNPs=single-nucleotide polymorphisms; VEGF=vascular endothelial growth factor; VEGFR-2=VEGF receptor 2.