Table 2 Distribution of genotypes and frequency of alleles of the Arg/Trp 194 (C/T 26304 exon 6) polymorphism of XRCC1 gene in squamous cell carcinoma of the head and neck (HNSCC) patients and the controls.
Genotype Allele | HNSCC patients (n = 92) Number (frequency) | Controls (n = 124) Number (frequency) | OR (95% CI) |
|---|---|---|---|
Arg/Arg | 71 (0.86) | 102 (0.82) | 1 (reference) |
Arg/Trp | 21 (0.14) | 22 (0.18) | 1.37 (0.70; 2.68) |
Trp/Trp | 0 (0.00) | 0 (0.00) | --------- |
Arg | 163 (0.98) | 226 (0.91) | 1 (reference) |
Trp | 21 (0.12) | 22 (0.09) | 1.32 (0.70; 2.49) |