konradjk / exac_browser

Browser for ExAC consortium data
http://exac.broadinstitute.org
MIT License
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Discrepancy dbSNP and ExAC #344

Open annerochtus opened 6 years ago

annerochtus commented 6 years ago

Hi, Looking at WES data I noticed that certain SNPs are not available in the population database (gnomAD/ExAC), but that there is a SNP associated. Looking up the SNP in the dbSNP gives us a relatively high MAF, extracted from ExAC, but I don't find it in the population database ExAC. E.g. the MAF of rs201848360 is 1.5% (according to note extracted from ExAC), but when I look into ExAC or gnomAD the SNP seems to be absent from the general population. I have similar findings for the other SNPs. Could you please explain us how this is possible? Trying to classify a variant as pathogenic or benign it makes a big difference of the variant is absent from the general population or present in 1.5% of the population. Thank you in advance.