The HLA-B*58:01:43 allele identified in a Korean individual awaiting hematopoietic stem cell transplant

HLA-B*58:01:43 differs from HLA-B*58:01:01:01 by one synonymous nucleotide substitution in codon 197.

The novel HLA-C allele, HLA-C*01:02:84 allele, identified in a solid organ transplantation donor

HLA-C*01:02:84 differs from HLA-C*01:02:01:01 by one synonymous nucleotide substitution in codon 48.

Identification of the novel HLA-B*58:138 allele in a Korean individual

HLA-B*58:138 differs from HLA-B*58:01:01:01 by one nucleotide substitution in exon 3 at codon 145.

Identification of the novel HLA-A*11:423 allele by sequencing-based typing

HLA-A*11:423 differs from HLA-A*11:01:01:01 by a non-synonymous nucleotide substitution in codon 170, changing Arginine to Lysine.

The novel HLA-C*06:325 allele identified in a Korean individual awaiting kidney transplantation

HLA-C*06:325 differs from HLA-C*06:02:01:01 by a non-synonymous nucleotide substitution in codon 145, changing Arginine to Histidine. This article is protected by copyright. All rights reserved.

Identification of the novel HLA-A*68:100 allele by PCR-SBT in a Chinese bone marrow donor

The novel HLA-A*68:100 allele differs from HLA-A*68:01:02:01 by one nucleotide substitution in exon 3 at position 371.

The HLA-C*03:539 allele identified in a kidney transplantation recipient

The novel HLA-C*03:539 allele differs from HLA-C*03:04:01:01 by one nucleotide substitution at codon 26.

Breast Cancer Is Associated with Increased HLA-DRB1*11:01 and HLA-DRB1*10:01 Allele Frequency in a Population of Patients from Central Italy

The relationship between HLA-DRB1 allele polymorphism and breast cancer (BC) development is still unclear and needs further investigation. To address this issue, we analyzed HLA-DRB1 allele frequency (AF) by sequence-based typing (SBT) in 47 patients from central Italy with BC and 156 sex and age-matched healthy controls. Two hundred ninety-seven individuals from the same region were utilized as historical controls. Pearson's chi-square analysis with Yate's correction or Fisher's Exact test with Bonferroni's correction, as appropriate, were used to compare HLA-DRB1 AF differences in patients and controls. A total of 36 HLA-DRB1 alleles were identified. A detailed study showed that HLA-DRB1*11:01 and HLA-DRB1*10:01 alleles are significantly associated with increased BC risk. In particular, HLA-DRB1*11:01 AF was significantly higher in patients with BC than in healthy females and historical controls, even following Bonferroni's correction (stage I-II BC patients vs historical controls p<0.00; stage III-IV BC patients vs female healthy controls p=0.025 and historical controls p<0.00). The HLA-DRB1*10:01 allele was also positively associated with BC as evidenced by a significantly higher AF in patients with BC than in healthy controls (BC patients stage I-II vs historical controls corrected p =0.01). These results suggest that both HLA-DRB1*11:01 and HLA-DRB1*10:01 AF could represent interesting markers in patients at risk of developing BC.

Identification of the novel HLA-B allele, HLA-B*27:198, from a Korean individual

The novel HLA-B*27:198 allele differs from HLA-B*27:05:02:01 by one nucleotide substitution at codon 45.

Simultaneous genotyping of human platelet alloantigen-1 to 28bw systems by multiplex polymerase chain reaction sequence-based typing

BACKGROUND AND OBJECTIVES

Human platelet alloantigen (HPA) genotyping is important for the diagnosis and prevention the alloimmune platelet disorders. In this study, a simultaneous genotyping method for HPA-1 to -28bw systems was established using multiplex PCR-SBT and the frequencies of genotypes and alleles of HPA-1 to -28bw systems in the Zhejiang Han population were analysed.

MATERIALS AND METHODS

The specific primers were designed according to the nucleotide sequences of HPA-1 to 28bw systems which are located in ITGB3, GP1BA, ITGA2B, ITGA2, GP1BB and CD109, respectively. The multiplex PCR amplification systems were used, and then, the amplicons were purified and sequenced. A total of 335 healthy volunteer blood donors were detected.

RESULTS

The genotypes of ten reference samples from Platelet Immunology Workshop of ISBT were in concordance with the known genotypes. Among the 28 HPA systems, HPA a and b alleles were found in HPA-1 to 6w, HPA-15 and HPA-21w systems in the Chinese Han population, while only HPA aa genotype was detected in the other HPA systems. The frequencies of HPA-1a and HPA-1b were 0·993 and 0·007, with 0·943 and 0·057 for HPA-2a and HPA-2b, 0·527 and 0·473 for HPA-3a and HPA-3b, 0·997 and 0·003 for HPA-4a and HPA-4b, 0·991 and 0·009 for HPA-5a and HPA-5b, 0·980 and 0·020 for HPA-6wa and HPA-6wb, 0·508 and 0·492 for HPA-15a and HPA-15b and 0·994 and 0·006 for HPA-21wa and HPA-21wb.

CONCLUSIONS

One multiplex PCR-SBT method for HPAs was established and the data of the study could help to prevent and treat for alloimmune thrombocytopenia.