| 
 
 
|  |  
| major histocompatibility complex, class II, DR53 |  
| Haplotypes groups | DRA*01:DRB3*01 DRA*01:DRB3*02 DRA*01:DRB3*03 |  
| Structure (See HLA-DR) |  
| Identifiers | alpha *0101 |  
| Symbol(s) | HLA-DRA |  
| EBI-HLA | DRA*0101 |  
| Identifiers | beta 3 *01 *02 *03 |  
| Symbol(s) | HLA-DRB4 |  
| EBI-HLA | DRB3*01 |  
| EBI-HLA | DRB3*02 |  
| EBI-HLA | DRB4*03 |  
| Shared data |  
| Locus | chr.6 6p21.31 |  HLA-DR52 is an HLA-DR serotype that recognizes gene products of HLA-DRB3 locus. There are 3 allele groups that can produce 35 isoforms.
 DRB3, DRB4, and DRB5 are minor DR beta encoding loci, they have been recognized as having distinct evolution.[1] having diverged from DRB1 approximately 4 million years ago.[2]
 DRB3 locus is only apparent in a small subset of DR haplotypes, and most individuals lack DRB3.     
  Alleles
 DR52 recognition of some DRB3* alleles[3]
| DRB3* | DR52 | ? | Sample |  
| allele | % | % | size (N) |  
| 0101 | 95 |  | 62 |  
| 0102 | 99 |  | 1 |  
| 0201 | 99 |  | 2 |  
| 0202 | 95 |  | 100 |  
| 0203 | 95 |  | 1 |  
| 0301 | 95 |  | 36 |   Associated diseasesDR52 serotype is positively associated with systemic sclerosis,[4] inflammatory myopathies,[5] inclusion body myositis,[6] 
 DRB3*01 is positively associated with sarcoidosis,[7] Grave's Disease, [8][9] pulmonary sarcoidosis,[10]
 DRB3*0101:DRB1*0301 is linked to Lofgren's syndrome[11]
 DRB3*0202 is also linked to  Grave's disease[9], serum IgG antibodies to Chlamydia pneumoniae with essential hypertension,[12],  acute necrotizing encephalopathy[13]
 DRB3*0301 is weakly associated with anti-cardiolipin antibodies in SLE[14]
 DRB3*0301:DRB1*1302 may be associated with Crohn's diseaes[15]
  DRB1 linkageHLA-DRB3 is linked to the following HLA-DR serotypes and DRB1 allele groups. 
 HLA-DR3 - DRB1*03 
 HLA-DR5 -
 HLA-DR6 -
  References^ Gorski J, Rollini P, Mach B (1987). "Structural comparison of the genes of two HLA-DR supertypic groups: the loci encoding DRw52 and DRw53 are not truly allelic". Immunogenetics 25 (6): 397-402. PMID 3596674.^ Gongora R, Figueroa F, Klein J (1996). "The HLA-DRB9 gene and the origin of HLA-DR haplotypes". Hum. Immunol. 51 (1): 23-31. PMID 8911994.^ derived from IMGT/HLA^ Kuwana M, Kaburaki J, Okano Y, Inoko H, Tsuji K (1993). "The HLA-DR and DQ genes control the autoimmune response to DNA topoisomerase I in systemic sclerosis (scleroderma)". J. Clin. Invest. 92 (3): 1296-301. PMID 7690776.^ Garlepp MJ (1993). "Immunogenetics of inflammatory myopathies". Baillière's clinical neurology 2 (3): 579-97. PMID 8156144.^ Garlepp MJ, Laing B, Zilko PJ, Ollier W, Mastaglia FL (1994). "HLA associations with inclusion body myositis". Clin. Exp. Immunol. 98 (1): 40-5. PMID 7923882.^ Ishihara M, Ishida T, Mizuki N, Inoko H, Ando H, Ohno S (1995). "Clinical features of sarcoidosis in relation to HLA distribution and HLA-DRB3 genotyping by PCR-RFLP". The British journal of ophthalmology 79 (4): 322-5. PMID 7742275.^ Smikie M, Pascoe R, Barton E, Morgan O, Christian N, Dowe G, Roye-Green K, Bailey V, James O (2001). "HLA-DRB3*0101 is associated with Graves' disease in Jamaicans.". Clin Endocrinol (Oxf) 55 (6): 805-8. PMID 11895223.^ a b Chen Q, Huang W, She J, Baxter F, Volpe R, Maclaren N (1999). "HLA-DRB1*08, DRB1*03/DRB3*0101, and DRB3*0202 are susceptibility genes for Graves' disease in North American Caucasians, whereas DRB1*07 is protective.". J Clin Endocrinol Metab 84 (9): 3182-6. PMID 10487684.^ Grunewald J, Berlin M, Olerup O, Eklund A (2000). "Lung T-helper cells expressing T-cell receptor AV2S3 associate with clinical features of pulmonary sarcoidosis.". Am J Respir Crit Care Med 161 (3 Pt 1): 814-8. PMID 10712327.^ Bogunia-Kubik K, Tomeczko J, Suchnicki K, Lange A (2001). "HLA-DRB1*03, DRB1*11 or DRB1*12 and their respective DRB3 specificities in clinical variants of sarcoidosis.". Tissue Antigens 57 (1): 87-90. PMID 11169267.^ Zabay J, Marco J, Soler J, Contu L, Cappai L, Carcassi C, Gómez G, Mulet J, Munar M, Viader C (2005). "Association of HLA-DRB3*0202 and serum IgG antibodies to Chlamydia pneumoniae with essential hypertension in a highly homogeneous population from Majorca (Balearic Islands, Spain).". J Hum Hypertens 19 (8): 615-22. PMID 15905891.^ Oh H, Kwon S, Kim C, Choe B, Ko C, Jung H, Suh J, Lee J (2004). "Molecular analysis of HLA class II-associated susceptibility to neuroinflammatory diseases in Korean children.". J Korean Med Sci 19 (3): 426-30. PMID 15201511.^ Galeazzi M, Sebastiani G, Tincani A, et al. (2000). "HLA class II alleles associations of anticardiolipin and anti-beta2GPI antibodies in a large series of European patients with systemic lupus erythematosus.". Lupus 9 (1): 47-55. PMID 10715100.^ Cariappa A, Sands B, Forcione D, et al. (1998). "Analysis of MHC class II DP, DQ and DR alleles in Crohn's disease.". Gut 43 (2): 210-5. PMID 10189846.
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