15 months ago by
The annotation packages for Affymetrix arrays are provided by us as a convenience (they are simply a reformatted version of the data that Affy supplies to the wider community) without any checking or vetting on our part. So any answer you get here is likely to be due to somebody going to netaffx.com and looking it up for you, which you can do yourself just as easily and without having to wait.
I actually did look up shasmar, and it is apparently something that AceView says is a thing. And the FAQ for AceView starts with the question 'Are AceView transcripts reliable?' and they then spend like 5 paragraphs explaining that they in fact are. Which paradoxically makes me think the opposite?
Anyway, it seems that AceView likes to use these cute all lower case names for whatever thing they come up with that NCBI and Ensembl seem not to believe in, so dollars to donuts those are all AceView-only transcripts of some sort.