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Lower GATK's HaplotypeCaller threshold for allele frequency as part of a variant calling pipeline
As part of a variant calling pipeline i'm interested in lowering the threshold for allele frequency tolerance in GATK's HaplotypeCaller variant caller to 0.01 (1%), if possible. If not, is there another variant calling tool that doesn't fliter out variants with low allele frequencies?
Background: I know for a fact that there's at least one variant in my sample that doesn't appear in my VCF file if allele frequencies below 0.1 (10%) are filtered out during the variant calling as it's the default in some programs. I can see the variant when I inspect the corresponding bam file with samtools tview and another lab called that specific variant itself.
Thanks in advance,