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Old 08-22-2012, 05:29 AM   #1
Location: Spain

Join Date: Jan 2012
Posts: 26
Default discrepancies in allele frequencies between 1000 genomes and 5400 exomes

Using ANNOVAR summary routine I have got a exome_summary.csv file that contains different columns with 1000 genomes and 5400 exomes frequencies with some empty cells. I asume that empty cells correspond to SNPs that were not found in any of these databases. However there are cases where you get frequencies either in 1000 genomes or 5400 exomes but not in the other database. I would understand it if the alllele frequency in the alternate database would be very low, but there are cases where this frequency can be up to 80%. Does anyone know what is the reason for these big discrepancies between these databases?
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