Abstract image of ALFRED Frequency

ALFRED - The ALlele FREquency Database


A resource of gene frequency data on human populations supported by
Biomedical Informatics and Data Science,
Yale University

Welcome! to the newly designed and implemented web interface of ALFRED - ALFRED 2.0.


ALFRED 2.0 was deployed on August 24th, 2024.


ALFRED was conceived and developed by Prof. Kenneth K. Kidd and Dr. Judith R. Kidd & Kidd Lab in the Department of Genetics at Yale university. It aims to provide allele frequency data on human population samples, making this information readily accessible for scientific research and educational use.The ALFRED database includes published allele frequency data that has been systematically curated and added to the database over the past 20 years.


The new version of the ALFRED web interface is currently a work in progress. This initial implementation includes only diallelic SNPs. We are continually revising its structure and functionality as time permits for ongoing improvements. Please note that currently we are not adding new data to the database.