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Blood group phenotype distribution in Saudi Arabs.

M A Abdelaal1, C C Anyaegbu, E M al Sobhi

  • 1Division of Haematology, King Khalid National Guard Hospital, P.O. Box 9515, Jeddah 21423, Saudi Arabia.

African Journal of Medicine and Medical Sciences
|February 24, 2001
PubMed
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Saudi Arabs exhibit unique blood group distributions, showing similarities to Negroes in ABO and Caucasians in Rh phenotypes, but distinct MNSs patterns. Notably, higher Kell heterozygous frequencies and increased Duffy and Lewis null alleles were observed.

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.

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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.