In addition, the significant correlation was detected between Rab13 and Rab14 (r = 0.8971, p = 0.000) in the groups with diabetes (diabetic control group and diabetic OLP-treated groups), while between Rab8A and Rab13, and Rab8A and Rab14, results were not significant. The gene discussed is RAB13; the disease is oral lichen planus.