The cufflinks and cuffdiff results are not consistent with each other. This is
Does it make sense?
<< Obseration >>
We have 3 control samples and 3 treated sample. For many genes, their FPKM in
cufflinks and cuffdiff are far from consistent. In cufflinks result, for a
gene’s FPKM are
control group (sample: 1,2,3)：0， 0， 4.8
treated group(sample: 1,2,3)：0， 0， 6.0
In cuffdiff, the estimated FPKM are
control group： 12.6
Use ucsc gene annotation gtf file, mm9, downloaded from UCSC table database
Use cufflinks on each individual sample.
Cufflinks: galaxy mirror at cistrome, minimal count:10, no quantile
normalization, use gtf as reference, no background correction
Use cufflinks on treated groups (3 biological replicates) and control groups (3
Cuffdiff: galaxy mirror at cistrome, minimal count:10, no normalization, use
gtf as reference, no background correction
Cufflinks returns 55350 transcripts, while cuffdiff return 55418 transcripts,
even though they use the same gene annotation gtf file.
For the 6 cufflinks results (corresponding to 6 samples), the transcript ids
are all the same, but the order are not,
Does it make sense? Or did I do anything wrong?
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