what is the optimal value for the phred score for rna seq data?
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Originally posted by arcolombo698 View PostThank you very much for your response
It is RNA-seq experiment.
As already pointed out, you should be fine to do variant calling from the expressed genes, where there is sufficient depth - but you will want to put some kind of depth threshold for the variant calling (also there will be instances of allele specific expression and presumably RNA editing in the data). With different numbers of reads per sample, obviously some samples will have better coverage than others. For differential expression studies this is not so much of an issue when the data is normalised to the number of mapped reads anyway.Last edited by Bukowski; 12-25-2013, 06:58 AM.
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thank you for the response
are there resources recommended that gives insight about understanding sufficient depth of reads for variant calling and other common problems? it seems sufficient to have read lengths of 13M.. i have a sample read with 7M , this seems also low.
these samples have all passed QC with no duplicated sequences (all the repeated sequences have been trimmed out...dont want duplicated sequences)
would appreciate resources on how to properly process VCF , and also how to analyze the VCF results, error checking etc...
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