“…The rest of the publications included 2 polymorphisms. In 8 articles [18, 21, 23, 25-27, 30, 31] study groups consisted of subjects with chronic periodontitis, in 2 [24,29] aggressive periodontitis and in 5 [19,20,22,28,32] The frequency of Asp299Gly polymorphism was 12.83% among subjects with periodontitis (13.76% in CP and 10.57% in AgP) and 12.14% in the control group. The frequency of Asp299Gly allele in periodontitis was 6.44% (6.93% in CP and 5.28% in AgP) and 5.47% in the control group.…”