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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.

From: Genetic polymorphisms in DNA base excision repair gene XRCC1 and the risk of squamous cell carcinoma of the head and neck

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)