TP53 polymorphism in adult onset laryngeal papilloma patients and controls
| Amino acid at position 72 | Patients (n=42) | % | Controls (n=186) | % | p value |
| Arg | 24 | 57 | 88 | 47 | 0.31 |
| Pro/arg | 18 | 43 | 75 | 40 | 0.58 |
| Pro | 0 | 0 | 23 | 12 | 0.01 |
No significant differences were detected between Arg and Pro/Arg amino acid sequences at position 72 in patients and controls. The Pro allele was more common in controls than in patients (Fisher's exact test, two tailed).