rAggr finds proxy markers (SNPs and indels) that are in linkage-disequilibrium (LD) with a set of queried markers, using the 1000 Genomes Project and HapMap genotype databases. rAggr uses an expectation–maximization algorithm adapted from the Haploview software (Barrett et al., 2005) to calculate pairwise r2 and D'. All calculations are done "on the fly" by the web server and are available for one week following job submission.

Type or paste in a list of queries to find all SNPs in linkage disequilibrium. You may enter rs IDs, chromosomal positions, or database marker IDs.

Genotypes database:
Populations: African:
East Asian:
South Asian:
Min MAF:    
 r2 range:    to
Max Distance (kb):  
Max # Mendel errors:  
HW p-value cutoff:  
Min genotype %: