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Question Posted 06/20/20:
Dear professor, I used the SNP ID in the ADNI 1 GWAS and the SNP ID in the APOE gene (about 1000) to find duplicate values. The repeated part is only about sixty, why not all? I don't understand what went wrong?
Response posted 06/20/20 by Kwangsik Nho:
The number of duplicates depends on the genotyping platform.
In order to have more duplicates, you need to perform imputation.
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