Unconfigured Ad

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • yi2004
    Junior Member
    • Jun 2010
    • 3

    #1

    ti/tv ratio and false positive SNP rate

    I learned that estimated false positive SNP rate=1- (observed_ti/tv_ratio-0.5)/(expected_ti/tv_ratio-0.5). In one of our re-sequencing data, the observed ti/tv ratio for coding region is 3.0 (while expected ti/tv ratio for exome is 2.8). But false positive rate can not be negative...
  • Pepe
    Member
    • Mar 2009
    • 30

    #2
    What do ti and tv stand for?

    Comment

    • nilshomer
      Nils Homer
      • Nov 2008
      • 1283

      #3
      Originally posted by Pepe View Post
      What do ti and tv stand for?
      Transition and transversion mutation rates.

      Comment

      • yi2004
        Junior Member
        • Jun 2010
        • 3

        #4
        Does anybody know why the false positive SNP rate is estimated as
        1- (observed_ti/tv_ratio-0.5)/(expected_ti/tv_ratio -0.5)?
        Any reference to this is much appreciated.

        Comment

        • nilshomer
          Nils Homer
          • Nov 2008
          • 1283

          #5
          Originally posted by yi2004 View Post
          Does anybody know why the false positive SNP rate is estimated as
          1- (observed_ti/tv_ratio-0.5)/(expected_ti/tv_ratio -0.5)?
          Any reference to this is much appreciated.
          I used google:
          MEGA is an integrated tool for conducting automatic and manual sequence alignment, inferring phylogenetic trees, mining web-based databases, estimating rates of molecular evolution, and testing evolutionary hypotheses.

          Comment

          • yi2004
            Junior Member
            • Jun 2010
            • 3

            #6
            Originally posted by nilshomer View Post
            Thanks Nilshomer! I will have a look at the website you pointed at, and hope I can figure out the answer to my question...

            Comment

            Latest Articles

            Collapse

            • SEQadmin2
              Multiomic Liquid Biopsy: What DNA/RNA Panels Reveal That DNA Alone Can’t
              by SEQadmin2



              Tumors contain complex mixtures of cell populations that evolve in response to treatment and host-specific factors. Tissue biopsies provide only static snapshots of a tumor’s state. But what if we could follow that evolution over time using a minimally invasive technique?

              Liquid biopsies can detect tumor-derived material circulating in the bloodstream, providing a way to study treatment response, detect emerging resistance, and discover new biomarkers. Circulating
              ...
              10-14-2026, 09:55 AM
            • SEQadmin2
              New Genomics Technologies Take Aim at Long-Standing Limits
              by SEQadmin2


              Researchers using sequencing and genomics tools often have to make trade-offs. They can choose between speed or scale, short reads or long-range information, or targeted panels or a view of the whole transcriptome. New technologies that have been released this year are built to address those tough choices.

              We asked six companies the same four questions to learn about their latest products. The new technologies bring a lot to the table, including rethinking sequencing
              ...
              09-28-2026, 10:25 AM

            ad_right_rmr

            Collapse

            News

            Collapse

            Topics Statistics Last Post
            Started by SEQadmin2, 10-22-2026, 11:13 AM
            0 responses
            60 views
            0 reactions
            Last Post SEQadmin2  
            Started by SEQadmin2, 10-22-2026, 10:48 AM
            0 responses
            42 views
            0 reactions
            Last Post SEQadmin2  
            Started by SEQadmin2, 10-15-2026, 10:52 AM
            0 responses
            50 views
            0 reactions
            Last Post SEQadmin2  
            Started by SEQadmin2, 10-14-2026, 05:39 AM
            0 responses
            53 views
            0 reactions
            Last Post SEQadmin2  
            Working...