Human Leukocyte Antigen-A Allele Distribution in Nasopharyngeal Carcinoma Patients Showing Anti-Melanoma-Associated Antigen A or Synovial Sarcoma X-2 T Cell Response in Blood / 中华医学杂志(英文版)

<p><b>Background</b>Development of innovative immunotherapy is imperative to improve the poor survival of the nasopharyngeal carcinoma (NPC) patients. In this study, we evaluated the T cell response to melanoma-associated antigen (MAGE)-A1, MAGE-A3, or synovial sarcoma X-2 (SSX-2) in the peripheral blood of treatment-naive NPC patients. The relationship of responses among the three proteins and the human leukocyte antigen (HLA)-A types were analyzed to provide evidence of designing novel therapy.</p><p><b>Methods</b>Sixty-one NPC patients admitted into the Tumor Hospital affiliated to the Xinjiang Medical University between March 2015 and July 2016 were enrolled. Mononuclear cells were isolated from the peripheral blood before any treatment. HLA-A alleles were typed with Sanger sequence-based typing technique. The T cell response to the MAGE-A1, MAGE-A3, or SSX-2 was evaluated with the Enzyme-Linked ImmunoSpot assay. Mann-Whitney U-test was used to compare the T cell responses from different groups. Spearman's rank correlation was used to analyze the relationship of T cell responses.</p><p><b>Results</b>HLA-A*02:01, A*02:07, and A*24:02 were the three most frequent alleles (18.9%, 12.3%, and 11.5%, respectively) among the 22 detected alleles. 31.1%, 19.7%, and 16.4% of the patients displayed MAGE-A1, MAGE-A3, or SSX-2-specific T cell response, respectively. The magnitudes of response to the three proteins were 32.5, 38.0, and 28.7 SFC/10 peripheral blood mononuclear cells, respectively. The T cell response against the three proteins correlated with each other to different extent. The percentage of A*02:01 and A*24:02 carriers were significantly higher in patients responding to any of the three proteins compared to the nonresponders.</p><p><b>Conclusion</b>MAGE-A1, MAGE-A3, or SSX-2-specific T cell responses were detectable in a subgroup of NPC patients, the frequency and magnitude of which were correlated.</p>

Study to assess the prevalence of human leukocyte antigen-A*3101 allele among Indian epileptic patients and its infl uence on safety and effi cacy of antiepileptic therapy.

Background: The objective was to study the prevalence of human leukocyte antigen (HLA)-A*3101 allele among epileptic patients and to assess the safety and effi cacy of antiepileptic therapy. Methods: 295 subjects were selected and divided into two groups, Group I had 192 epileptic patients and Group II had 103 normal healthy controls. After written informed consent, 30 ml of mouthwash sample was collected from each subject and DNA was extracted by standard salting-out technique and used for HLA-A*3101 genotyping by two-step nested allele-specifi c polymerase chain reaction amplifi cation and agarose gel electrophoresis. Results: In Group I, 12 (6.25%) of the 192 patients were tested positive for HLA-A*3101 allele and all were taking carbamazepine (CBZ). Among them, 56 (30%) subjects had developed less severe adverse effects such as headache and giddiness, skin rashes and memory disturbances, and HLA-A*3101 was present in 8 of them while 136 had no adverse effects in which 4 of them were tested positive for the allele. In Group II, 3 (2.9%) of the 103 healthy controls were tested positive for the allele. No difference was found in response to antiepileptic therapy between allele positive and negative patients. Conclusion: The present study had shown that HLA-A*3101 is prevalent in 6.25% of the Indian epileptic population under study. The presence of this allele has a signifi cant association with the development of mild cutaneous reactions like skin rashes. However, no difference was observed in allele positive patients in response to antiepileptic therapy in comparison with allele negative patients.

The analysis for allelic polymorphism of HLA-A,B and DRB1 in Han race population in Xining region of China / 中国免疫学杂志

Objective:To investigate the HLA-A,B,DRB1 allele polymorphism of the Han race population in Xining region of China.Methods:Polymerase chain reaction and sequence-specific olignucleotide probe hybridizations were used to detect HLA-A,B and DRB1 alleles in 73 unrelated heath Han individuals from Xining region,and the results were compared with those of Han populations in China.Results:Eleven of alleles were detected and identified for HLA-A,Twenty for HLA-B,and seventeen for HLA-DRB.HLA-A02,A11,A30,A33;HLA-B13,B15,B37,B40,B46,B58;HLA-DRB103,DRB104,DRB109,DRB112,DRB113,DRB3,DRB4 were the most common alleles.Conclusion:The allelic polymorphism of HLA loci of Han race population in Xining area has owns characteristics.