Allele Frequency Net Database
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Contact us

The Allele Frequency Net Database is a free resource, we therefore welcome all kind of feedback. We envisage that this will benefit the research and medical community. If you have a comment, suggestion or query please send an e-mail to one of the following addresses:



Derek Middleton DSc, PhD, FRCPath
Transplant Immunology
Royal Liverpool University Hospital
Liverpool, L7 8XP
United Kingdom
Bioinformatics Staff
(General website queries)


Whilst AFND cannot assess the typing accuracy of data provided, >75% of the data on the website has been peer-reviewed and published. Thus, the AFND relies on the accuracy of data being verified by the reviewers of the journals and acts mainly as a source for compiling data. Although all submissions by contributors are considered for inclusion, AFND introduces minimal criteria for HLA and KIR populations before they become publicly accessible on the website. Click here to consult a set of validations that are performed by our team.

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We reserve the right to use information about visitors (location), date/time visited, page visited, referring website, etc. to improve our services. This information is used for site usage statistics only.


Allele frequency net database (AFND) 2020 update: gold-standard data classification, open access genotype data and new query tools
Gonzalez-Galarza FF, McCabe A, Santos EJ, Jones J, Takeshita LY, Ortega-Rivera ND, Del Cid-Pavon GM, Ramsbottom K, Ghattaoraya GS, Alfirevic A, Middleton D and Jones AR Nucleic Acid Research 2020, 48:D783-8.
Liverpool, U.K.

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