Blood group phenotype distribution in Saudi Arabs

Area of Science:

• * Population genetics
• * Immunogenetics
• * Anthropology

Background:

• * Understanding blood group phenotype distribution is crucial for transfusion medicine and population studies.
• * Previous research has established baseline data for Caucasian and African American populations in the USA.

Purpose of the Study:

• * To determine the distribution of eight major blood group phenotypes in Saudi Arabians.
• * To compare these findings with existing data from Caucasian and African American populations.

Main Methods:

• * Analysis of blood samples from a Saudi Arabian cohort.
• * Phenotyping for ABO, Rh, MNSs, Lutheran, Kell, Duffy, Kidd, and Lewis blood group systems.
• * Statistical comparison with published data from US Caucasian and Negro populations.

Main Results:

• * Saudi Arabs show ABO phenotype distribution similar to Negroes and Rh phenotypes similar to Caucasians.
• * A distinct MNSs phenotype pattern was observed in Saudi Arabs.
• * The heterozygous Kell phenotype (Kk) was significantly more frequent in Saudi Arabs compared to Caucasians and Negroes.
• * The Kidd system null phenotype (JKa-b-) was absent in the Saudi Arabian group.
• * Increased frequencies of null alleles were noted in the Duffy (Fya-b-) and Lewis (Le(a-b-)) systems in Saudi Arabs.

Conclusions:

• * Saudi Arabians possess a unique blood group phenotype profile, distinct from Caucasians and Negroes, particularly in the MNSs, Kell, Duffy, and Lewis systems.
• * These findings have implications for blood donor selection and transfusion practices within Saudi Arabia.
• * Further research is warranted to explore the genetic underpinnings of these observed distributions.