Evaluation of Blood Groups in Patients with Oral Lichen Planus

Oral lichen planus (OLP) is a chronic mucocutaneous disease with unknown etiology. Several studies reported conflicting results of blood group antigens in patients with OLP. The current study aimed at evaluating the prevalence of blood group antigens in patient with OLP compared with the healthy persons.
The current case-control study included 55 patients with OLP and 55 healthy individuals. Subjects in the case and control groups were matched by age and gender. Blood group of the study participants was determined by the laboratory cooperated with the project and accordingly, the results were recorded. The data were analyzed with SPSS version 19 using chi-square test.
People participating in the study included 55 patients with OLP (including 41 females and 14 males) and 55 healthy volunteers (43 females and 12 males) with the age range of 19 to 66 years. Based on statistical analysis, there was no significant difference between the case and control groups.
Based on the obtained results of the current study, the frequency of ABO and Rh (Rhesus) blood groups was not different between the study groups.