Use the rs identifier box to specify the variant for which to search. When you begin typing in the search box below, a selection list will appear after you type the first three numbers.
rs identifier*:  

Gene Name*:  
Please note the zygosity options in the dropdown box. See the wiki on how to query for patients without a particular variant (homozygous for the reference/reference allele). The rs identifier that appears in the box after you start typing indicates the change from the reference (nucleotide on the left) to the alternate (nucleotide on the right) allele.
Please note the zygosity options in the dropdown box. See the wiki on how to query for patients without a particular variant (homozygous for the reference/reference allele).
Zygosity*: