Unconfigured Ad

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts
  • akvarel
    Member
    • Nov 2011
    • 11

    ANNOVAR vs VEP

    I was comparing the results from ANNOVAR and VEP and what I found is that


    gene-based vs transcript based
    ANNOVAR (ENSEMBL ids) seems to output information only gene-based, not transcript based, therefore out of 81 SNPs I have 81(+-) genes as those that fall in intronic/exonic/ncRNA has one gene annotation and others neighboring genes.
    VEP outputs all ensembld ids of transcripts that are affected by the SNP.

    1. Is there any possibility to force ANNOVAR to take all transcripts affected by SNP into consideration?

    annovar line: annotate_variation.pl -build hg19 SNPs_annovar_input.avinput humandb/ -dbtype ensGene
    vep: variant_effect_predictor.pl -i SNPs_vep_input.txt --cache --force_overwrite --symbol


    intergenic-variantion handling
    ​If a variation is intergentic, ANNOVAR outputs the neighboring genes. VEP tells nothing about the neighboring genes.

    2. ​Is there any possibility to force VEP to output the neighboring genes for an internecine variations?


    strand information in VEP
    Strand information should be specified for VEP input and is crucial for a prediction about how the variant affects AS. ANNULAR does not need this specification.
    I do not have a strand information for my SNPs (they are taken from a paper and authors provided no information about the strand, only MAF, normal allele and risk allele).

    3. Is there a possibility to assign each SNP (using a MAF and risk,normal allele information, position) a strand using R and some database (better command line approach) ?



    Thanks
    Last edited by akvarel; 03-13-2015, 06:23 AM.

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, 06-17-2026, 06:09 AM
0 responses
33 views
0 reactions
Last Post SEQadmin2  
Started by SEQadmin2, 06-09-2026, 11:58 AM
0 responses
97 views
0 reactions
Last Post SEQadmin2  
Started by SEQadmin2, 06-05-2026, 10:09 AM
0 responses
117 views
0 reactions
Last Post SEQadmin2  
Started by SEQadmin2, 06-04-2026, 08:59 AM
0 responses
110 views
0 reactions
Last Post SEQadmin2  
Working...