HLA Database » Allele Report

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

DRB1*01:20

Allele reported 8 time(s) and present in 7 population(s).

Population		Phenotype Frequency (%)	Allele Frequency (in_decimals)		Sample Size	IMGT/HLA¹ Database	Distribution²	Haplotype³ Association	Notesª
	Saudi Arabia pop 5	0.6	0.0032		158	See
	Germany DKMS - United Kingdom minority		0.0005		1043	See
	Chile Santiago		0.0002		920	See
	USA NMDP African		0.0001		28557	See
	USA NMDP Caribean Hispanic		0.0000		115374	See
	USA NMDP Mexican or Chicano		0.0000		261235	See
	Germany DKMS - German donors		0.0000		3456066	See
	Netherlands Leiden		0.0000		1305	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.