Read coverage bias
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7 weeks ago

I have a list of 12000 transcripts out of which 1500 are novel. I performed an HTSeq count to get the read counts for all the 12000 transcripts. I segregated the 1500 novel counts and other non novel. Normalized both using TPM, however I find that the novel list has far higher TPM values compared to the non novel ones. Why is my result biased?

transcripts differential-expression read-coverage • 316 views
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Entering edit mode
7 weeks ago
Trivas ★ 1.7k

You need to calculate your TPMs before splitting your novel transcripts from non-novel transcripts. This will allow you to directly compare the abundance between them.

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Thanks a lot Trivas. My results seem to be right now.

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