Polymorphic analysis of the Lutheran blood group system in Chinese

Area of Science:

• Immunogenetics
• Hematology
• Molecular Biology

Background:

• The Lutheran blood group system is a complex set of 19 antigens.
• It is associated with immunoglobulin receptors and adhesion molecules.
• Allelic relationships exist for four antigen pairs, with others being high incidence.

Purpose of the Study:

• To analyze the genetic polymorphism of the Lutheran blood group system in Chinese subjects using molecular techniques.
• To determine gene frequencies and identify novel alleles within this population.

Main Methods:

• Genetic polymorphism analysis was performed on blood samples from healthy Chinese donors.
• Molecular techniques including Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) and Sequencing-Based Typing (SBT) were employed.

Main Results:

• Prevalence of Lu(a-b+) phenotype was observed in 1102 individuals.
• Genotypes LU(6+9-) and LU(8+14-) were found in 117 and 119 individuals, respectively.
• Gene frequencies for Au(a) and Au(b) were 0.8695 and 0.1304. A novel allele was identified in 4 Lu(18+19-) phenotype cases.

Conclusions:

• The study characterized the genetic polymorphism of the Lutheran blood group system in Chinese subjects.
• Identified common antigen types and gene frequencies, along with a novel allele, contributing to the understanding of blood group diversity.