Hi Aparna,

no, sorry. Samtools relies on the aligner to determine the soft clipping
correctly. Maybe you could try with a different aligner or edit the
cigars with a dedicated program/script of yours.

petr


On Tue, 2014-09-09 at 15:08 -0400, Aparna wrote: 
> Hi there,
> 
> 
> 
> Looks like samtools mpileup format does not out put discordant
> information hidden by the soft-clipped read segments.
> 
> Often times this could be mis leading in calculating actual allele
> frequecy percentages, especially  when you are looking at multi base
> pair deletions. In one of the cases I have seen today, I have 1300
> reads supporting the 30 base pair deletion, but the aligner some how
> soft clipped the  reads (which are 97% of them ) and left long reads
> with deletions intact (no soft clipping ) in the bam file.
> 
> so when I run the mpileup through, I get about 27 reads supporting the
> deletion and rest of them are being ignored.
> 
> 
> My question to you , is there a way to deal with such instances within
> mpileup format itself  than to look at CIGAR signatures on a case by
> case basis?
> 
> 
> Thanks,
> 
> Aparna
> 
> 
> 
> 
> 
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