Abstract:
This community-based, prospective and analytical study was aimed to determine the
frequencies of ABO & Rhesus blood group antigens and phenotypes among
Halfaween tribe. The study also aimed to establishing ABO& Rhesus blood group
baseline data for this tribe and compare it with other Sudanese tribes.
This study was conducted in different parts of Khartoum state during the period of
three months, following informed consent, a total of one hundred venous blood
samples were collected from unrelated individuals into 2.5 mls EDTA containers.
The red blood cells (RBCs) were tested for ABO antigens by the slide
agglutination techniques & common Rhesus antigens by the Particle gel immune-
diffusion .Seventy (70) specimens were tested by the slide agglutination
techniques. The alleles and frequencies were determined.
The antigen O was the most common antigen among the study group (45%),
followed by B (21%), A (13%), and the least common antigen was AB (3%).
The ē, c and the D genes were the commonest alleles detected with frequencies
of 98%, 91% and 87% respectively. The C allele and the E genes were the least
frequent with 57% and 8.0% frequencies respectively.
Similarities between ALhalfaween and some Sudanese populations and
differences with others were noticed.
The study revealed that there was no relation between the frequency of common
Rhesus antigens and that of ABO blood group antigens.
