Frequency of the A2-Subgroup Among Blood Group A and Blood Group AB Among Students of Faculty of Medicine and Health Sciences at Alimam Almahadi University, White Nile, Sudan

Abstract

Background: ABO blood group system plays a vital role in transfusion medicine, genetics understanding, inheritance pattern, and disease susceptibility; there- fore, it is fundamental to have information on the distribution of these blood groups among any population. There is very slim published data about distribution of ABO blood groups in Sudan and lesser about subgroups. Methods: Blood samples were collected from 100 students in faculty of Medi- cine, Al imam Al Mahdi university, Kosti, White Nile state, Sudan. Students were known to have either A or AB blood groups and were typed for A1 and A2 sub- groups as well as RhD antigen. Results: Among the A group there are 93.42% A1 subgroup and 6.6% A2 sub- group. Among the AB group there were 91.6% A1B and A2B was 8.33%. Conclusion: Frequency of A2 subgroup among A and AB blood phenotypes are equal in Sudanese.