If your samples contain known amplified / deleted regions, you might want to exclude the amplified / deleted regions by uploading a BED file of those regions in order to remove bias from the analysis. If your count matrices contains genomic coordinates (peaks or regions), upload a tab-seperated '.bed' file under the format:
chr1 880001 901000
chr1 913001 944000
chr1 959001 961000
...
Else if you want to remove specific genes / enhancers, provide a text file of one feature name per line:
CNR2
PNRC2
SRSF10
...
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