HLA-B (alpha)-β2MG with bound peptide major histocompatibility complex (human), class I, B39 Alleles B*3901, 3902, 3903, . . Structure (See HLA-B) Shared data Locus chr.6 6p21.31

HLA-B39 (B39) is an HLA-B serotype. The serotype identifies the more common HLA-B*39 gene products.

B39 is a split antigen of the broad antigen B16, and is a sister type of B38. B39 is most commonly found on the west pacific rim, in Japan and highest frequency in the new world. In Europe it is found in Scandinavia and Northern Russia.

Serotype + Serotypes B39, B16, and B38 recognition of the HLA B*39 gene productsderived from IMGT/HLA B*39 B39 B16 B38 Sample allele % % % size (N) 3901 95 476 3902 87 96 3903 77 20 3905 82 245 3906 94 508 3908 48 57 3909 97 13 3910 82 127 3911 69 16 Alleles link-out to IMGT/HLA Databease at EBI

The serology for the most common B39 alleles, B*3901 and B*3906 is good, but some allele products are not well detected. Given the differential involvement of these alleles in disease testing should involve high resolution typing.

+ HLA B*3906 frequencies freq ref. Population (%) Venezuela Perja Mountain Bari23.9 Mexico Mixtec Oaxaca8.8 USA Arizona Pima7.3 USA South Texas Hispanics5.6 Mexico Zaptotec Oaxaca4.5 New Mexico Canoncito Navajo3.7 Oman2.5 PNG Wanigela2.3 Tunisia Tunis2.3 North American Natives1.9 USA Hispanic1.7 Brazil Belo Horizonte1.6 South Dakota Lakota Sioux1.5 Cuban White1.4 Azores S. Maria & S. Miguel1.3 Australia New South Wales1.1 Finland1.1 Portugal North1.1 Portugal Centre1.0 Spain Eastern Andalusia Gipsy1.0 Brazil Terena0.9 Ireland Northern0.9 Azores Terceira Island0.8 USA Caucasian pop20.8 Brazil0.7 USA Philadelphia Caucasians0.7 India Andhra Pradesh Golla0.5 Thailand0.4

Alleles + HLA B*3901 frequencies freq ref. Population (%) Taiwan Saisiat54.9 Taiwan Tsou24.5 South Dakota Lakota Sioux22.5 Taiwan Taroko21.8 Taiwan Atayal19.8 PNG Wanigela16.7 Japan Ainu Hokkaido16.0 Taiwan Bunun14.9 New Mexico Canoncito Navajo14.6 Taiwan Thao13.3 Taiwan Rukai13.0 Taiwan Ami10.2 USA Hawaii Okinawa7.7 Papua New Guinea Wosera7.0 Papua New Guinea Madang6.4 Mexico Mixtec Oaxaca5.9 Taiwan Puyuma5.0 Taiwan Paiwan4.9 New Caledonia4.8 Japan Central4.4 American Samoa4.0 USA North American Natives4.0 Taiwan Hakka3.6 Indig. Australian Cape York Peninsula3.5 Japan (5)3.5 Philippines Ivatan3.0 Brazil2.9 China Guangxi Maonan2.8 Georgia Tbilisi Georgians2.8 China Yunnan Nu2.6 Thailand2.5 Azores Terceira Island2.4 Singapore Chinese2.4 Romanian2.3 China Yunnan Lisu2.2 Indig. Australian Yuendumu2.1 China Guangzhou2.0 Croatia2.0 France South East1.9 Georgia Svaneti Svans1.9 PNG Karimui Plateau1.9 Azores Central Islands1.8 Spain Eastern Andalusia1.8 Uganda Kampala1.6 Mexico Zaptotec Oaxaca1.5 Singapore Thai1.5 China Guangzhou Han1.4 China Qinghai Hui1.4 Czech Republic1.4 Madeira1.4 Indig. Australian Kimberly1.3 Finland1.1

Disease B39 is suggested as a factor in Takayasu's arteritis and gallstones in Mexico. Osteoarticular complications of brucellosis appear to be associated with B39. An association with spondylarthropathies and psoriatic arthritis was observed in several studies. Psoriatic arthritis appears to be linked to MICA-A9 which tightly linked to HLA-B39. B39 also appears to be involved in the Fishers syndrome variant of Guillain–Barré syndrome.

B39 appears to be protective against cardiomyopathy in Chaga's disease indicating a possible selective factor in its rise in the New World. Chaga's disease is caused by a trypanosome carried by a blood sucking insect found in tropical, palm growing regions.

Southern California now reports cases of Chaga's disease from contaminated transfusions and may be already a habitat for the vector.

In Takayasu's arteritis Takayasu's arteritis appears to have a link to B39. The association with B*3902 increases risk of pulmonary infarction, ischemic heart disease, aortic regurgitation, systemic hypertension, renal artery stenosis, cerebrovascular disease, and visual disturbance. B*3906, common in indigenous Mesoamericans has been found associated with the same disease.

+ HLA B*3902 frequencies freq ref. Population (%) Mexico Mixe Oaxaca38.7 Mexico Zaptotec Oaxaca13.4 Mexico Mixtec Oaxaca5.9 Mexico Mestizos1.2 Japan pop50.9 Cuban White0.7 Israel Ashk. and Non Ashk. Jews0.5 Japan Central0.5 Senegal Niokholo Mandenka0.5 B*3903 PNG New Britain Rabaul13.2 Brazil Terena11.2 Argentina Toba Rosario5.2 Brazil0.7 Finland0.6 Kenya Luo0.6 North American Natives0.5 B*3904 Argentina Toba Rosario1.2 Georgia Svaneti Svans0.6 Jordan Amman0.3 Shijiazhuang Tianjian Han0.1 Japan Central0.1 Romanian0.1 B*3905 Venezuela Perija Yucpa36.1 Mexico Zaptotec Oaxaca12.7 Mexico Mixtec Oaxaca9.8 Mexico Mestizos4.9 Arizona Pima4.5 Mexico Guadalajara Mestizos2.4 Argentina Toba Rosario2.3 USA Hispanic2.1 Mexico Mixe Oaxaca1.9 Cuban White1.4 Mexico Chihuahua Tarahumara1.1 USA North American Natives0.5 Shijiazhuang Tianjian Han0.2 B*3907 Shijiazhuang Tianjian Han0.6 Singapore Thai0.5 China South Han0.2 B*3908 Mexico Zaptotec Oaxaca2.2 Mexico Mestizos1.2 Mexico Mixtec Oaxaca1.0 Brazil0.7 USA Hispanic0.6 B*3909 Venezuela Perija Yucpa34.9 Thailand pop33.1 Brazil Terena1.7 China South Han1.4 Argentina Toba Rosario1.2 China Qinghai Hui0.9 B*3910 Sudanese2.5 Senegal Niokholo Mandenka2.1 South African Natal Zulu1.5 Cameroon Beti1.4 Spain Eastern Andalusia1.2 Kenya Luo1.1 Israel Arab Druse1.0 Kenya Nandi1.0 Guinea Bissau0.8 Kenya 0.7 Mali Bandiagara0.7 Morocco Nador Metalsa Class I0.7 Cameroon Bamileke0.6 Cameroon Yaounde0.5 Israel Ashk. and Non Ashk. Jews0.5 Saudi Arabia Guraiat and Hail0.5

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