To investigate the human leukocyte antigen (HLA) association with anti-synthetase syndrome (ASSD). We conducted largest immunogenetic HLA-DRB1 and HLA-B study to date in a homogeneous cohort of 168 Caucasian patients ASSD 486 ethnically matched healthy controls by sequencing-based-typing. A statistically significant increase HLA-DRB1*03:01 HLA-B*08:01 alleles compared was disclosed (26.2% versu...

A previous issue of the ASHI Quarterly introduced HLAMatchmaker as a matching program that considers the structural basis of epitopes on class I HLA antigens. Each HLA antigen can be viewed as a string of short sequences (triplets) involving polymorphic amino acid residues in antibodyaccessible positions; the triplets are considered key elements of epitopes that can induce the formation of spec...

Background: A common Human Leukocyte Antigen (HLA) class II allele, DQβ1*03:01, seems to be associated with Bullous pemphigoid (BP) in Caucasians whereas previous studies in other ethnic groups showed other HLA class II alleles as genetic predisposing factors for BP. Objective: To investigate the association of HLA class II alleles and haplotypes with BP in Iranian population. Methods: Fifty pa...

The human leukocyte antigen G (HLA-G) molecule exhibits limited tissue distribution, low polymorphism and alternative splicings that generate seven HLA-G isoforms. HLA-G exerts multiple immunoregulatory functions. Recent studies indicate an ectopic up-regulation in tumor cells that may favor their escape from anti-tumor immune responses. This study it is an effort to clarify the presence of HLA...

Psoriasis (PsO) is a T cell-mediated autoimmune disease without cure. The major risk-associated PsO susceptibility gene encodes for the human leukocyte antigen C*06:02 (HLA-Cw6). Half of patients carry this allele encoding HLA-I molecule which presents short peptides (together known as immunopeptidome) to CD8 cells, thereby initiating immune responses. It unclear presented by HLA-Cw6 are preval...

Intestinal epithelial cells express a low level of HLA class II molecules constitutively, with elevated levels seen in the setting of mucosal inflammation including inflammatory bowel disease. The ability of intestinal epithelial cells to act as antigen presenting cells for alphabeta CD4(+) T lymphocytes was examined through a molecular analysis of the HLA class II antigen processing pathway. W...

In patients with celiac disease, inflammatory T cell responses to HLA-DQ2-bound gluten peptides are thought to cause disease. Two types of HLA-DQ2 molecules exist, termed HLA-DQ2.5 and HLA-DQ2.2. Whereas HLA-DQ2.5 predisposes to celiac disease, HLA-DQ2.2 does not. We now provide evidence that the disease-associated HLA-DQ2.5 molecule presents a large repertoire of gluten peptides, whereas the n...

results of all participants, 104 patients (52%) were diagnosed with cmv infection. there was no significant difference between the two groups, with and without cmv infection, in terms of patient’s characteristics. the cmv infection, in patients receiving a transplanted organ from deceased donor, was significantly more prevalent than in those receiving kidney transplant from living donor (63% vs...

Previous studies have suggested that, in human melanoma, expression of HLA-A2 antigen is important for tumor cell recognition by autologous T-lymphocytes. Because of the recent demonstration that expression of HLA Class I antigens may be selectively lost in several human tumors, including melanoma, we derived pairs of tumor infiltrating lymphocytes (TIL) and melanoma cell lines from 4 human lym...