HLA Database » Allele Report

The list below shows all populations in AFND that contains the allele. If an allele has an entry with a lower resolution this will be shown at the end.

Allele: 

B*15:20
Allele reported 60 time(s) and present in 23 population(s).

Population		Phenotype Frequency (%)	Allele Frequency (in_decimals)		Sample Size	IMGT/HLA¹ Database	Distribution²	Haplotype³ Association	Notesª
	Argentina Gran Chaco Mataco Wichi	13.0	0.0650		49	See
	Argentina Gran Chaco Eastern Toba	2.6	0.0130		135	See
	China Beijing pop 2		0.0074		826	See
	Argentina Rosario Toba	1.2	0.0060		86	See
	Saudi Arabia pop 5	0.6	0.0032		158	See
	Brazil Puyanawa	0.7	0.0030		150	See
	Malaysia Peninsular Chinese	0.5	0.0026		194	See
	Switzerland Basel		0.0025		1888	See
	China Beijing Shijiazhuang Tianjian Han		0.0020		618	See
	Brazil Rio de Janeiro Caucasian		0.0019		521	See
	Brazil Barra Mansa Rio State Caucasian		0.0012		405	See
	Malaysia Peninsular Malay	0.2	0.0011		951	See
	Colombia Bogotá Cord Blood	0.1	0.0007		1463	See
	USA NMDP Caribean Hispanic		0.0002		115374	See
	USA NMDP Hispanic South or Central American		0.0002		146714	See
	Spain (Catalunya, Navarra, Extremadura, Aaragón, Cantabria,	0.0	0.0001		4335	See
	USA NMDP African		0.0000		28557	See
	USA NMDP Mexican or Chicano		0.0000		261235	See
	USA NMDP Chinese		0.0000		99672	See
	USA NMDP African American pop 2		0.0000		416581	See
	Germany DKMS - German donors		0.0000		3456066	See
	USA NMDP European Caucasian		0.0000		1242890	See
	South Africa Natal Zulu	0.0	0.0000		100	See
	Singapore Chinese	0.0	0.0000		149	See
	USA San Antonio Caucasian		0.0000		222	See
	USA South Texas Hispanic		0.0000		194	See
	USA Alaska Yupik		0.0000		252	See
	USA Caucasian Bethesda	0.0	0.0000		307	See
	USA African American Bethesda	0.0	0.0000		187	See
	USA Philadelphia Caucasian	0.0	0.0000		141	See
	Hong Kong Chinese	0.0	0.0000		569	See
	South Korea pop 3		0.0000		485	See
	Morocco Settat Chaouya	0.0	0.0000		98	See
	Morocco Nador Metalsa pop 2		0.0000		73	See
	Mexico Mestizo	0.0	0.0000		41	See
	Ireland Northern	0.0	0.0000		1000	See
	Netherlands Leiden		0.0000		1305	See
	Oman	0.0	0.0000		118	See
	Romania	0.0	0.0000		348	See
	Cuba Mixed Race	0.0	0.0000		42	See
	Cuba Caucasian	0.0	0.0000		70	See
	Czech Republic		0.0000		106	See
	Switzerland Aargau-Solothurn		0.0000		1838	See
	Switzerland Bern		0.0000		3545	See
	China Tibet Region Tibetan		0.0000		158	See
	Argentina Gran Chaco Western Toba Pilaga	0.0	0.0000		19	See
	Burkina Faso Fulani		0.0000		49	See
	Burkina Faso Rimaibe		0.0000		47	See
	Bulgaria		0.0000		55	See
	Brazil Belo Horizonte Caucasian	0.0	0.0000		95	See
	Brazil Vale do Ribeira Quilombos	0.0	0.0000		144	See
	Switzerland Geneva pop 2		0.0000		1267	See
	Switzerland Graubunden		0.0000		759	See
	Switzerland Lugano		0.0000		1169	See
	Switzerland Lausanne		0.0000		993	See
	Switzerland Luzern		0.0000		1553	See
	Switzerland St Gallen		0.0000		2113	See
	Switzerland Sion		0.0000		832	See
	Switzerland Zurich		0.0000		4875	See
	China North Han		0.0000		105	See

Notes:

* Allele Frequency: Total number of copies of the allele in the population sample (Alleles / 2n) in decimal format.
   Important: This field has been expanded to four decimals to better represent frequencies of large datasets (e.g. where sample size > 1000 individuals)
* Phenotype Frequency: Percentage of individuals who have the allele or gene (Individuals / n).
* Allele Frequencies shown in green were calculated from Phenotype Frequencies assuming Hardy-Weinberg proportions.

¹ IMGT/HLA Database - For more details of the allele.
² Distribution - Graphical distribution of the allele.
³ Haplotype Association - Find HLA haplotypes with this allele.
ª Notes - See notes for ambiguous combinations of alleles.