Seqanswers Leaderboard Ad

Collapse

Announcement

Collapse
No announcement yet.
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • false positives from BAM file

    Is there a tool or script that can help identify false positives from a BAM file? Thanks.

  • #2
    False-positive what? Alignments? Filter by MAPQ.

    Comment


    • #3
      We use Ion Torrent PGM sequencing and use the aligned hg19 BAM in NextGene. I know that TVC is better at removing false positive variants, presumably because it has access to the SFF file and which contain signal values in flow space and a mapping between sequence. Is there a preferred or optimal way to asses MAPQ in the BMA alignment? Thanks.
      Last edited by cmccabe; 08-25-2014, 06:07 AM.

      Comment


      • #4
        As NextGene is a commercial package, you should ask the company that makes it for suggestions. You'll generally find that the community won't provide any support/feedback for such packages.

        Comment


        • #5
          I have contacted them and explained the issue. I am sure that future versions of the software will get better, but in the meantime I want to ensure that we are providing the best information possible. I am looking for some ideas from community members in developing a perl script to help address this. Some of the false positive calls have great PhreD scores (> 20), with good balance, so I am stumped. Thanks.

          Comment

          Latest Articles

          Collapse

          • seqadmin
            Essential Discoveries and Tools in Epitranscriptomics
            by seqadmin




            The field of epigenetics has traditionally concentrated more on DNA and how changes like methylation and phosphorylation of histones impact gene expression and regulation. However, our increased understanding of RNA modifications and their importance in cellular processes has led to a rise in epitranscriptomics research. “Epitranscriptomics brings together the concepts of epigenetics and gene expression,” explained Adrien Leger, PhD, Principal Research Scientist...
            04-22-2024, 07:01 AM
          • seqadmin
            Current Approaches to Protein Sequencing
            by seqadmin


            Proteins are often described as the workhorses of the cell, and identifying their sequences is key to understanding their role in biological processes and disease. Currently, the most common technique used to determine protein sequences is mass spectrometry. While still a valuable tool, mass spectrometry faces several limitations and requires a highly experienced scientist familiar with the equipment to operate it. Additionally, other proteomic methods, like affinity assays, are constrained...
            04-04-2024, 04:25 PM

          ad_right_rmr

          Collapse

          News

          Collapse

          Topics Statistics Last Post
          Started by seqadmin, 04-25-2024, 11:49 AM
          0 responses
          19 views
          0 likes
          Last Post seqadmin  
          Started by seqadmin, 04-24-2024, 08:47 AM
          0 responses
          19 views
          0 likes
          Last Post seqadmin  
          Started by seqadmin, 04-11-2024, 12:08 PM
          0 responses
          62 views
          0 likes
          Last Post seqadmin  
          Started by seqadmin, 04-10-2024, 10:19 PM
          0 responses
          60 views
          0 likes
          Last Post seqadmin  
          Working...
          X