Refined information on alleles belonging to the C*07:01/07:06/07:18 group in the Korean population

Alleles of the C*07:01/07:06/07:18 group is distinguished by polymorphisms in exons 5–6. In a previous study, we focused on exons 2–3 of the gene and showed that 6.8% of Koreans express alleles in this group. In this study, we identified allelic and haplotypic diversities of the C*07:01/07:06/07:18 group in Koreans. Among 118 C*07:01/07:06/07:18-positive, unrelated, healthy samples, 96.6% were C*07:06 and 3.4% were C*07:01. Each allele was exclusively associated with a specific set of other alleles consisting of the conserved haplotypes A*01:01-C*07:01-B*08:01-DRB1*03:01-DQB1*02:01 (100%) and A*33:03-C*07:06-B*44:03-DRB1*07:01-DQB1*02:02 (95.6%), respectively. None carried C*07:18. With the continuous discovery of novel alleles, periodic updates with testing for newer alleles will be useful to support related research and clinical settings in each population.