HLA-B49




major histocompatibility complex (human), class I, B49
Alleles	B4901, B4902, B*4903
Structure (See HLA-B)
Symbol(s)	HLA-B
EBI-HLA	B*4901
	B*4902
	B*4903
Locus	chr.6 6p21.31

HLA-B49 (B49) is an HLA-B serotype. B49 is a split antigen from the B21 broad antigen, the sister serotype B50.^[1] The serotype identifies the more common HLA-B*50 gene products.^[2] (For terminology help see: HLA-serotype tutorial)

Serotype

**HLA B*4901 frequencies**
		freq
ref.	Population	(%)
^[4]	Portugal North	8.7
^[4]	Spain Basque Gipuzkoa Province	6.1
^[4]	Madeira	5.9
^[4]	Cameroon Yaounde	5.4
^[4]	Morocco Nador Metalsa (Berber)	5.1
^[4]	Kenya Nandi	4.6
^[4]	Sudanese	4.3
^[4]	Portugal South	4.1
^[4]	Tunisia Tunis	4.0
^[4]	India Jalpaiguri Toto	3.8
^[4]	Senegal Niokholo Mandenka	3.7
^[4]	Uganda Kampala	3.7
^[4]	Spain Eastern Andalusia	3.5
^[4]	Tunisia	3.5
^[4]	Georgia Tbilisi Kurds	3.4
^[4]	Spain Catalonia Girona	3.4
^[4]	Italy North (1)	3.3
^[4]	Cameroon Beti	3.2
^[4]	Israel Ashkenazi and Non Ashkenazi Jews	3.2
^[4]	Guinea Bissau	3.1
^[4]	France South East	2.7
^[4]	Israel Arab Druse	2.5
^[4]	Mali Bandiagara	2.5
^[4]	Jordan Amman	2.4
^[4]	Tunisia Ghannouch	2.4
^[4]	Georgia Tbilisi Georgians	2.3
^[4]	Saudi Arabia Guraiat and Hail	2.2
^[4]	Cameroon Bamileke	1.9
^[4]	Czech Republic	1.9
^[4]	Georgia Svaneti Svans	1.9
^[4]	Macedonia (4)	1.9
^[4]	Bulgaria	1.8
^[4]	Romanian	1.6
^[4]	Italy Bergamo	1.1
^[4]	Zambia Lusaka	1.1
^[4]	Belgium	1.0
^[4]	China North Han	1.0
^[4]	India Andhra Pradesh Golla	1.0
^[4]	Ireland Northern	1.0
^[4]	South African Natal Zulu	1.0

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↑ derived from IMGT/HLA
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