Association between HLA-B*27:04 and genetic susceptibility to ankylosing spondylitis in Hunan Province

OBJECTIVES

Human leukocyte antigen (HLA) B27 is a susceptibility allele of ankylosing spondylitis (AS), and HLA-B27 antigen typing is an important indicator for clinical diagnosis of AS, but current typing methods such as sequence specific primer polymerase chain reaction (PCR-SSP) still possess limitation. Therefore, this study aims to analyze the correlation between B27 subtypes and susceptibility to AS in Hunan Province by applying high-resolution polymerase chain reaction-sequence-based typing (PCR-SBT).

METHODS

Peripheral blood of 116 patients with suspected AS (suspected AS group) and 121 healthy volunteers (control group) admitted to the Second Xiangya Hospital from January 2020 to December 2020 were collected for HLA-B genotyping by PCR-SBT. Among the patients in the suspected AS group, 23 patients were finally diagnosed with AS (confirmed AS group), and the remaining 93 undiagnosed patients served as the non-confirmed AS group. PCR-SBT and PCR-SSP were used to detect HLA-B27 typing in 116 patients with suspected AS, and the results of the 2 methods were compared.

RESULTS

The HLA-B27 allele frequency in the suspected AS group was significantly higher than that in the control group [11.63% vs 2.48%; P<0.001, odds ratio (OR)=5.18, 95% confidence interval (CI) 2.097 to 12.795]. B*27:04, B*27:05, B*27:06, and B*27:07 were detected in the suspected AS group and the control group. The frequency of the B*27:04 allele in the suspected AS group was significantly higher than that in the control group (9.48% vs 1.24%; P<0.001, OR=8.346, 95% CI 2.463 to 28.282). The positive rate of B27 in the suspected AS group and the confirmed AS group (B27+/+ and B27+/-) was significantly higher than that in the control group (χ2=16.579, P<0.001; χ2=94.582, P<0.001, respectively). Among the confirmed AS group, 21 were HLA-B27 carriers, and the B27 positive rate in the confirmed AS group was 91.3%. PCR-SBT could achieve high resolution typing of the HLA-B gene locus, with higher sensitivity, specificity, positive predictive value, negative predictive value, and accuracy than PCR-SSP.

CONCLUSIONS

PCR-SBT typing analysis shows a strong correlation between HLA-B * 27:04 and AS in Hunan province. The PCR-SBT method can be used as the preferred option for the auxiliary diagnosis of clinical AS.

Identification of the novel HLA-B*46:83 allele by sequencing-based typing in a Chinese individual

HLA-B*46:83 differs from HLA-B*46:03 by one single nucleotide substitution at position 539 G>T. This article is protected by copyright. All rights reserved.

Three HLA-DQB1 alleles, DQB1*03:432, DQB1*03:454 and DQB1*03:465 were identified in Chinese individuals

Compared with HLA-DQB1*03: 01:01:01, the alleles HLA-DQB1*03:432, HLA-DQB1*03:454 and HLA-DQB1*03:465 each show one nucleotide substitution. This article is protected by copyright. All rights reserved.

Identification of the novel HLA-A*01:348 allele in a Chinese individual

HLA-A*01:348 differs from HLA-A*01:01:01:01 by a single nucleotide substitution at position 140 T > C.

Description of two new HLA-C alleles: HLA-C*07:900 and HLA-C*07:906

Compared with HLA-C*07:02:01:01, the alleles HLA-C*07:900 and HLA-C*07:906 each show one nucleotide substitution respectively.

Identification of the novel HLA-DRB1*04:305 allele in a Chinese leukemia patient

HLA-DRB1*04:305 differs from HLA-DRB1*04:05:01:01 by two nucleotide substitutions.

Identification of the novel KIR3DL2*00711 allele by sequencing-based typing in a Chinese individual

KIR3DL2*00711 differs from KIR3DL2*0070101 by a single nucleotide substitution at position 1344G>A.

The novel HLA-DQB1*03:282N allele was identified in a Chinese individual

HLA-DQB1*03:282N differs from HLA-DQB1*03:03:02:01 by a single nucleotide deletion at position 258.

Characterization of the novel HLA-C*01:02:56 and HLA-C*01:02:57 alleles by sequencing-based typing

Compared with HLA-C*01:02:01:01, the alleles HLA-C*01:02:56 and HLA-C*01:02:57 each show one synonymous nucleotide substitution.

Three HLA-A alleles, A*11:01:89, A*11:01:96 and A*11:01:01:14 were identified in Chinese individuals

Compared with HLA-A*11:01:01:01, the alleles HLA-A*11:01:89, -A*11:01:96 and -A*11:01:01:14 each show one nucleotide substitution.

Identification of the novel HLA-DRB1*09:40 allele in a Chinese individual

HLA-DRB1*09:40 differs from HLA-DRB1*09:01:02:01 by one nucleotide substitution at position 214(G>A).

Identification of the novel HLA-A*31:124 allele by sequence-based typing in a Chinese cord blood donor

HLA-A*31:124 differs from HLA-A*31:01:02:01 by a single-nucleotide substitution at position 491 C>G.

Identification of the novel HLA-C*03:365 allele in a Chinese bone marrow donor

HLA-C*03:365 shows a substitution G to A at position 257 when compared to HLA-C*03:02:01.

Characterization of three new HLA Class I Alleles in Chinese individuals, HLA-B*46:68,-B*46:71,-B*46:72

Three new HLA class I alleles were described in the Chinese population. HLA-B*46:68,-B*46:71,-B*46:72 alleles differ from HLA-B*46:01:01 by a single nucleotide substitution at position 485C>T, 484A>G, 299T>A respectively.

The novel HLA-A*02:625 allele was identified in a Chinese bone marrow donor

HLA-A*02:625 differs from HLA-A*02:06:01:01 by a single nucleotide substitution at position 806 C>T.

Identification of the novel HLA-C*07:530 allele by polymerase chain reaction sequence-based typing

HLA-C*07:530 differs from HLA-C*07:02:01 by a single nucleotide at position 363G>C.

Identification of the novel HLA-B*13:98 allele in a Chinese individual

HLA-B*13:98 differs from HLA-B*13:02:01 by a single nucleotide substitution at position 193 A>G.

Genotype frequencies of human neutrophil antigen-3 in the Chinese Zhuang and Dong populations

Individuals with the human neutrophil antigen (HNA)-3b/3b type can produce HNA-3a antibodies, which have been reported to cause severe, sometimes fatal transfusion-related acute lung injury (TRALI). Our study aimed to determine the genotype frequency of HNA-3a/3b which will be helpful to estimate the potential risk for forming anti-HNA-3a, the clinically relevant antibody linked to TRALI in two different ethnic groups of southern China. Five hundred unrelated and healthy blood donors (284 male, 216 female; 300 Zhuangs, 200 Dongs) from the Guangxi Zhuang Autonomous Region were simultaneously typed for the HNA-3 allele using a polymerase chain reaction sequence-based typing (PCR-SBT) method. Genotype frequencies of HNA-3a/3a, HNA-3a/3b and HNA-3b/3b were 51.7%, 39.7% and 8.6% in the Zhuang population, and 44.0%, 49.0% and 7.0% in the Dong population, respectively. Homozygous HNA-3b/3b genotype frequency among the Zhuang population (8.6%) was significantly higher than previously reported in African Americans (0.4%), Brazilians (3.6%) and English Caucasians (2.9%) (p < .05). And the HNA-3b/3b genotype frequency among the Dong population was higher than African Americans (0.4%) (p < .05). This study showed Chinese Zhuang and Dong populations possessed a higher frequency of HNA-3b/3b genotype, suggesting that they may be at greater risk for developing anti-HNA-3a alloantibodies that may cause severe cases of TRALI. A molecular-based identification of the HNA-3b/3b genotype in all multiparous female blood donors was suggested to reduce the risk of TRALI following plasma and whole blood allogeneic transfusions.

Identification of a new HLA-A allele, HLA-A*02:07:09, in a Chinese non-Hodgkin lymphoma patient

HLA-A*02:07:09 is different from HLA-A*02:07:01 by a single nucleotide substitution at position 244.

Identification of the novel HLA-B*27:147 allele by polymerase chain reaction sequence-based typing

HLA-B*27:147 differs from HLA-B*27:04:01 by a single nucleotide substitution at position 523 C>G.

Identification of the novel HLA-B*40:01:41 allele by polymerase chain reaction sequence-based typing in a Chinese cord blood donor

HLA-B*40:01:41 differs from HLA-B*40:01:01 by a single nucleotide substitution at position 195 G>A.

Identification of 2 novel HLA-B alleles, HLA-B*55:02:09 and HLA-B*55:80 in Chinese individuals

HLA-B*55:02:09 and HLA-B*55:80 differ from HLA-B*55:02:01 by 1 single nucleotide substitution, respectively.

Identification of the novel null allele, HLA-C*01:109N, using polymerase chain reaction sequence-based typing in a Chinese leukemia patient

HLA-C*01:109N differs from HLA-C*01:02:01 by a single nucleotide substitution at position 683 G > A.

Identification of the novel HLA-B*13:83 allele by polymerase chain reaction sequence-based typing in a Chinese cord blood donor

HLA-B*13:83 differs from HLA-B*13:01:01 by 2 nucleotide substitutions at positions 103 and 106.

A novel allele, HLA-A*33:97 was identified in a Chinese bone marrow donor

HLA-A*33:97 has one base substitution at position 287 A>T in exon 2 compared to HLA-A*33:03:01.

Identification of the novel HLA-DRB1*12:50 allele by polymerase chain reaction sequence-based typing in a Chinese individual

HLA-DRB1*12:50 is different from HLA-DRB1*12:02:01 by a single nucleotide substitution at position 320 A>C.

Identification of the novel KIR2DL2*00103 allele in a Chinese individual by sequence-based typing

The KIR2DL2*00103 allele is different from KIR2DL2*00101 by a single nucleotide substitution at position 996 C>T.

A novel HLA-A*02 allele, A*02:543 was identified by polymerase chain reaction sequence-based typing in a Chinese cord blood donor

HLA-A*02:543 differ from HLA-A*02:12 by two nucleotide substitutions.

Identification of two novel HLA-A alleles, HLA-A*03:181 and HLA-A*03:229 in Chinese individuals

HLA-A*03:181 and HLA-A*03:229 differ from HLA-A*03:01:01:01 by one and three nucleotide substitutions, respectively.

A novel allele, HLA-B*55:70 was identified in a Chinese cord blood donor

HLA-B*55:70 has one base substitution at position 199 C>T in exon 2 compared to HLA-B*55:02:01.

Two novel HLA-A alleles: A*24:258 and A*24:305 were identified in Chinese individuals

Both HLA-A*24:258 and HLA-A*24:305 differ from HLA-A*24:01:01:01 by single nucleotide substitutions.

Identification of a novel HLA-B*54:34 allele by polymerase chain reaction sequence-based typing in a Chinese leukemia patient

HLA-B*54:34 is different from HLA-A*54:01:01 by a single nucleotide substitution at position 343 G>A.

A novel HLA-B allele, HLA-B*35:269

HLA-B*35:269 differs from HLA-B*35:01:01:01, by a single synonymous nucleotide at position 103.

A novel HLA allele, HLA-DQB1*02:57, was identified by polymerase chain reaction sequence-based typing in a Chinese individual

HLA-DQB1*02:57 has one base substitution at position 260 T>C in exon 2 from HLA-DQB1*02:01:01.

A novel HLA-A allele, HLA-A*02:544

The novel allele HLA-A*02:544 has two nucleotide changes from its most closely related allele, HLA-A*02:148. Firstly at nucleotide 255 where C → T (codon 60 GAC → GAT), resulting in a non-coding change as GAC and GAT both code for the same amino acid aspartic acid. Secondly at nucleotide 368 where T → G (codon 98 TTT → TGT) resulting in a coding change, 98 phenylalanine is changed to cysteine.

Identification of a novel allele HLA-C*12:138 in Russian patient by haplotype-specific sequence-based typing

HLA-C*12:138 differs from HLA-C*12:03:01:01 by a single change, resulting in an amino acid substitution.

HLA-C*06:103, a novel allele was identified in a Chinese patient awaiting hematopoietic stem cell transplantation

HLA-C*06:103 shows four nucleotides difference from that of HLA-C*06:02:01:01.

Identification of a novel HLA-DRB1 allele, HLA-DRB1*12:51, in a Chinese Cord Blood Donor

HLA-DRB1*12:51 has a single nucleotide difference to DRB1*12:02:01 at position 208, G > T.

Identification a novel HLA-B*27:105 allele in a Chinese bone marrow donor by polymerase chain reaction sequence-based typing

HLA-B*27:105 has one nucleotide change from HLA-B*27:04:01 at nucleotide position 404 from G to A.

Identification of a novel HLA-A*02:06:14 allele by polymerase chain reaction sequence-based typing in a Chinese bone marrow donor

HLA*02:06:14 differs from HLA-A*02:06:01 by a single nucleotide substitution G > A at position 246.

Identification of two novel alleles HLA-A*11:133 and A*11:02:05 by polymerase chain reaction sequence-based typing

HLA-A*11:113 shows one nucleotide difference from HLA-A*11:01:01: HLA-A*11:02:05 shows a single nucleotide difference from HLA-A*11:02:01.

A novel HLA-C allele, C*08:01:10 was identified in a Chinese leukemia patient

HLA-C*08:01:10 differs from HLA-C*08:01:01 by a single non-coding change at nucleotide 339 G>A.

A novel allele, HLA-B*54:29, identified by sequence-based typing in a Chinese bone marrow donor

HLA-B*54:29 allele differs from B*54:01:01 at nucleotide position 442 A>C in exon 3.

Genomic full-length sequence of a novel HLA-B*39:01:01:03 allele was identified in a Chinese individual

HLA-B*39:01:01:03 allele differs from HLA-B*39:01:01:01 allele by a single nucleotide substitution.