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Indels filtering for Lofreq

2015-03-03
2015-03-03
  • chris.cornor

    chris.cornor - 2015-03-03

    Hi Andreas,
    I have used your Lofreq to on my normal/tumor pair to retrieve INDELS. I have only 3 sample pairs for my data and I performed it individually since my tumors have different clonal properties. So I used it on normal/tumor pair and made 3 runs ( one for each pair). I have also used VarScan as well. Now I want to integrate the calls of both VarScan and Lofreq for INDELS and before that I want to use some kind of false positive filtering on the output of Lofreq indel vcf? Is that possible someway? Like we do in VarScan with fpfilter. The fpfilter does not seem to work with Lofreq vcf files. So am asking if there is a way we can filter further the Lofreq vcf files. My idea of project is comparing the genetic background between my 3 sample pairs. Please let me know if my query is clear or not.

     
    • Andreas Wilm

      Andreas Wilm - 2015-03-03

      Hi Chris,

      LoFreq results are filtered already relatively stringent (1% p-value
      threshold after Bonferroni correction for somatic indels). Why exactly
      do you think another filter is necessary? If needed you can filter
      results further with the 'lofreq filter' subcommand.

      I hope that answers your question,
      Andreas

      On 3 March 2015 at 19:21, chris.cornor vd4mmind@users.sf.net wrote:

      Hi Andreas,
      I have used your Lofreq to on my normal/tumor pair to retrieve INDELS. I
      have only 3 sample pairs for my data and I performed it individually since
      my tumors have different clonal properties. So I used it on normal/tumor
      pair and made 3 runs ( one for each pair). I have also used VarScan as well.
      Now I want to integrate the calls of both VarScan and Lofreq for INDELS and
      before that I want to use some kind of false positive filtering on the
      output of Lofreq indel vcf? Is that possible someway? Like we do in VarScan
      with fpfilter. The fpfilter does not seem to work with Lofreq vcf files. So
      am asking if there is a way we can filter further the Lofreq vcf files. My
      idea of project is comparing the genetic background between my 3 sample
      pairs. Please let me know if my query is clear or not.


      Indels filtering for Lofreq


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      --
      Andreas Wilm
      andreas.wilm@gmail.com | mail@andreas-wilm.com | 0x7C68FBCC

       
  • chris.cornor

    chris.cornor - 2015-03-03

    Yes actually I went through the results back and forth and it seems I do not have to do that filtering again. Thanks a lot. The variants seem quite stringently filtered now.

     

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