Evaluation of PECAM-1 Gene Polymorphism in Patients with Periodontal Disease and Healthy Individuals

Table 1

Allele and genotype frequencies of the PECAM-1 and Arg670Gly polymorphism in patients with periodontitis and controls.

PECAM-1 and Arg670Gly polymorphism	Periodontitis 𝑛=105	Controls 𝑛=101	𝑃 value
Allele—n (%)
Arg	103 (49%)	99 (48.9%)	0.99
Gly	107 (50.9%)	103 (51%)
Genotype—n (%)
Gly/Gly	8 (7.6%)	4 (4%)	0.18
Gly/Arg	91 (86.7%)	95 (93.9%)
Arg/Arg	6 (5.7%)	2 (2%)

Values are the numbers (percentages) of patients or controls positive for each allele or genotype. The 𝑃 values were calculated by the 𝜒²test from 3 × 2 or 2 × 2 contingency tables for genotypes and alleles, respectively.