Table 3. Genotypes and allele frequency of selected SNPs of RB1 and CCND1 in brain tumor patients.
| Genotype/Allele | Cases, n (%) | Controls, n (%) | OR (95% CI) | P-value |
|---|---|---|---|---|
| RB1 gene | ||||
| rs137853294 | ||||
| CC | 135 (54%) | 164 (65.6%) | 1 | 1 |
| CT | 95 (38%) | 73 (29.2%) | 1.49 (1.02–2.16) | 0.04* |
| TT | 20 (8%) | 13 (5.2%) | 1.60 (0.77–3.26) | 0.21 |
| C allele frequency | 365 (73%) | 401 (80.2%) | 1 | 1 |
| T allele frequency | 135 (27%) | 99 (19.8%) | 1.50 (1.11–2.01) | 0.007† |
| rs121913300 | ||||
| CC | 17 (6.8%) | 54 (21.6%) | 1 | 1 |
| CT | 214 (85.6%) | 195 (78%) | 1.68 (1.05–2.66) | 0.03* |
| TT | 19 (7.6%) | 1 (0.4%) | 20.48 (2.72–154.21) | 0.003† |
| C allele frequency | 248 (49.6%) | 303 (60.6%) | 1 | 1 |
| T allele frequency | 252 (50.4%) | 197 (39.4%) | 1.56 (1.22–2.01) | 0.0005‡ |
| CCND1 gene | ||||
| rs614367 | ||||
| CC | 119 (47.6%) | 154 (61.6%) | 1 | 1 |
| CT | 117 (46.8%) | 93 (37.2%) | 1.48 (1.04–2.12) | 0.03* |
| TT | 14 (5.6%) | 3 (1.2%) | 4.88 (1.39–17.21) | 0.01* |
| C allele frequency | 355 (71%) | 401 (80.2%) | 1 | 1 |
| T allele frequency | 145 (29%) | 99 (19.8%) | 1.65 (1.23–2.22) | 0.0007‡ |
| rs498136 | ||||
| GG | 85 (34%) | 104 (41.6%) | 1 | 1 |
| GT | 157 (62.8%) | 145 (58%) | 1.22 (0.85–1.75) | 0.27 |
| TT | 8 (3.2%) | 1 (0.4%) | 8.23 (1.02–66.31) | 0.047* |
| G allele frequency | 327 (65.4%) | 353 (70.6%) | 1 | 1 |
| T allele frequency | 173 (34.6%) | 147 (29.4%) | 1.27 (0.97–1.66) | 0.078 |
Abbreviation: n, number of samples.
Level of significance: P-value <0.05*, <0.01†, <0.001‡.