Objective: To investigate the relationship between major histocompatibility complex class I chain-related A(MICA) gene and systemic lupus erythematosus (SLE).
Methods: The alleles and frequencies of exons 4 and 5 of MICA gene were determined in 70 cases of SLE and 152 controls of Yunnan Hans by STR genotyping, polymerase chain reaction, single strand conformation polymorphism and bidirection DNA sequencing.
Results: Five alleles of exon 5 and 10 alleles of exon 4 were found in this study. The frequency of each allele was determined in patients and controls. There was no significant difference between the two groups in exons 4 and 5 of MICA gene.
Conclusion: Exons 4 and 5 of MICA were not related to SLE in Yunnan Hans.