HLA DRB1/DQA1/DQB1 haplotype determines thyroid autoimmunity in patients with insulin-dependent diabetes mellitus. 1996

L M Chuang, and H P Wu, and C C Chang, and W Y Tsai, and H M Chang, and T Y Tai, and B J Lin
Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei.

OBJECTIVE Thyroid autoimmunity is frequently associated with insulin-dependent diabetes mellitus (IDDM). The genetic factors which contribute to thyroid autoimmunity and IDDM have been described but vary between different races. We have therefore investigated the effect of class II HLA genes at both loci and the HLA haplotypes on the presence of autoimmunity in patients with IDDM in Taiwan. METHODS Eighty-three patients with IDDM and 105 unrelated normal controls were recruited for the measurement of thyroid autoantibodies and for genotyping of HLA DRB1, DQA1 and DQB1 by polymerase chain reaction-based DNA typing techniques. RESULTS Among 83 patients with IDDM, 23 (27.7%) were positive for antithyroid autoantibodies. Compared to those without thyroid autoimmunity, there was a female preponderance for IDDM with thyroid autoimmunity (female: male, 3:20 vs 29:31). Among the DR specificities, DR6 was associated with a weak protective effect against thyroid autoimmunity in IDDM patients. Upon detailed analysis of class II HLA haplotypes, the DRB1*0301/ DQA1*0501/DQB1*0201 haplotype was found to be associated with an increased risk of IDDM regardless of thyroid autoimmunity, while DRB1*0405/DQA1*0301/ DQB1*0401 was significantly increased only in the IDDM patients with thyroid autoimmunity. IDDM individuals with the HLA DRB1*0405/DQA1*0301/DQB1*0302 haplotype were not at risk of thyroid autoimmunity. CONCLUSIONS Our data indicated that there was a generalized genetic factor within or associated with the DRB1*0301/DQA1*0501/DQB1*0201 haplotype, and a more restricted effect with the DRB1*0405/DQA1*0301/DQB1*0401 haplotype which led to thyroid autoimmunity in patients with insulin-dependent diabetes mellitus.

UI MeSH Term Description Entries
D008297 Male Males
D003922 Diabetes Mellitus, Type 1 A subtype of DIABETES MELLITUS that is characterized by INSULIN deficiency. It is manifested by the sudden onset of severe HYPERGLYCEMIA, rapid progression to DIABETIC KETOACIDOSIS, and DEATH unless treated with insulin. The disease may occur at any age, but is most common in childhood or adolescence. Diabetes Mellitus, Brittle,Diabetes Mellitus, Insulin-Dependent,Diabetes Mellitus, Juvenile-Onset,Diabetes Mellitus, Ketosis-Prone,Diabetes Mellitus, Sudden-Onset,Diabetes, Autoimmune,IDDM,Autoimmune Diabetes,Diabetes Mellitus, Insulin-Dependent, 1,Diabetes Mellitus, Type I,Insulin-Dependent Diabetes Mellitus 1,Juvenile-Onset Diabetes,Type 1 Diabetes,Type 1 Diabetes Mellitus,Brittle Diabetes Mellitus,Diabetes Mellitus, Insulin Dependent,Diabetes Mellitus, Juvenile Onset,Diabetes Mellitus, Ketosis Prone,Diabetes Mellitus, Sudden Onset,Diabetes, Juvenile-Onset,Diabetes, Type 1,Insulin Dependent Diabetes Mellitus 1,Insulin-Dependent Diabetes Mellitus,Juvenile Onset Diabetes,Juvenile-Onset Diabetes Mellitus,Ketosis-Prone Diabetes Mellitus,Sudden-Onset Diabetes Mellitus
D005260 Female Females
D006239 Haplotypes The genetic constitution of individuals with respect to one member of a pair of allelic genes, or sets of genes that are closely linked and tend to be inherited together such as those of the MAJOR HISTOCOMPATIBILITY COMPLEX. Haplotype
D006650 Histocompatibility Testing Identification of the major histocompatibility antigens of transplant DONORS and potential recipients, usually by serological tests. Donor and recipient pairs should be of identical ABO blood group, and in addition should be matched as closely as possible for HISTOCOMPATIBILITY ANTIGENS in order to minimize the likelihood of allograft rejection. (King, Dictionary of Genetics, 4th ed) Crossmatching, Tissue,HLA Typing,Tissue Typing,Crossmatchings, Tissue,HLA Typings,Histocompatibility Testings,Testing, Histocompatibility,Testings, Histocompatibility,Tissue Crossmatching,Tissue Crossmatchings,Tissue Typings,Typing, HLA,Typing, Tissue,Typings, HLA,Typings, Tissue
D006680 HLA Antigens Antigens determined by leukocyte loci found on chromosome 6, the major histocompatibility loci in humans. They are polypeptides or glycoproteins found on most nucleated cells and platelets, determine tissue types for transplantation, and are associated with certain diseases. Human Leukocyte Antigen,Human Leukocyte Antigens,Leukocyte Antigens,HL-A Antigens,Antigen, Human Leukocyte,Antigens, HL-A,Antigens, HLA,Antigens, Human Leukocyte,Antigens, Leukocyte,HL A Antigens,Leukocyte Antigen, Human,Leukocyte Antigens, Human
D006683 HLA-DQ Antigens A group of the D-related HLA antigens found to differ from the DR antigens in genetic locus and therefore inheritance. These antigens are polymorphic glycoproteins comprising alpha and beta chains and are found on lymphoid and other cells, often associated with certain diseases. HLA-DC Antigens,HLA-MB Antigens,HLA-DC,HLA-DQ,HLA-DS,HLA-DS Antigens,HLA-LB,HLA-LB Antigens,HLA-MB,Antigens, HLA-DC,Antigens, HLA-DQ,Antigens, HLA-DS,Antigens, HLA-LB,Antigens, HLA-MB,HLA DC Antigens,HLA DQ Antigens,HLA DS Antigens,HLA LB Antigens,HLA MB Antigens
D006684 HLA-DR Antigens A subclass of HLA-D antigens that consist of alpha and beta chains. The inheritance of HLA-DR antigens differs from that of the HLA-DQ ANTIGENS and HLA-DP ANTIGENS. HLA-DR,Antigens, HLA-DR,HLA DR Antigens
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths

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