Unconfigured Ad

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts
  • salvadorherrandoperez
    Junior Member
    • Jan 2018
    • 2

    Fastqc

    Dear members.
    I am using FASTQC* for the first time (in Galaxy).
    Is there an online resource showing how to deal with a range of RNAseq quality issues to get a feel of how FASTQC works and could be applied to my data**.
    Many thanks indeed.
    Salva

    * https://www.bioinformatics.babraham....ojects/fastqc/
    ** transcriptomes (wild reptile species in climate-change research) obtained through Ilumina sequencers.
    Salvador Herrando-Pérez PhD. MPhil.
    Department of Biogeography and Global Change
    Spanish National Research Centre
    Madrid, Spain
    Email: [email protected]
  • GenoMax
    Senior Member
    • Feb 2008
    • 7142

    #2
    Read these posts. Pay special attention to ones for duplicates, positional sequence bias at beginning of RNAseq reads.

    Comment

    • salvadorherrandoperez
      Junior Member
      • Jan 2018
      • 2

      #3
      thanks

      great resource - thanks.
      Salvador Herrando-Pérez PhD. MPhil.
      Department of Biogeography and Global Change
      Spanish National Research Centre
      Madrid, Spain
      Email: [email protected]

      Comment

      • GenoMax
        Senior Member
        • Feb 2008
        • 7142

        #4
        Word of caution. Having a test of two "fail" (red X) in FastQC does not make your data automatically bad. If you have specific questions about anything post here with screenshots of FastQC data.

        Comment

        Latest Articles

        Collapse

        • SEQadmin2
          Nine Things a Sample Prep Scientist Thinks About Before Sequencing
          by SEQadmin2


          I’m not a sequencing expert. I’m a purification scientist who uses NGS to evaluate workflows my group develops. With this perspective, we think about the sample first and the NGS workflow second. The sequencer is an exceptionally honest reporter, but it can only report on what you give it, so whether you get clean, interpretable data from an NGS workflow is largely determined before you begin.

          Here are nine questions we think about, in roughly the order they matter, before...
          06-18-2026, 07:11 AM
        • SEQadmin2
          From Collection to Sequencing: Why Sample Preparation and Preservation Define Sequencing Data
          by SEQadmin2


          Data variability is still an issue in sequencing technologies despite the advances in reproducibility and accuracy of these platforms. But the problem does not originate in the sequencing itself, but in the previous steps, before the sample reaches the sequencer.


          The first step is collection, followed by preservation and sample preparation for analysis. Most scientists overlook those steps, but not being careful might just be skewing the experiment’s results.
          ...
          06-02-2026, 10:05 AM

        ad_right_rmr

        Collapse

        News

        Collapse

        Topics Statistics Last Post
        Started by SEQadmin2, 06-26-2026, 11:10 AM
        0 responses
        15 views
        0 reactions
        Last Post SEQadmin2  
        Started by SEQadmin2, 06-17-2026, 06:09 AM
        0 responses
        49 views
        0 reactions
        Last Post SEQadmin2  
        Started by SEQadmin2, 06-09-2026, 11:58 AM
        0 responses
        107 views
        0 reactions
        Last Post SEQadmin2  
        Started by SEQadmin2, 06-05-2026, 10:09 AM
        0 responses
        125 views
        0 reactions
        Last Post SEQadmin2  
        Working...