biomaRt Biotype Predictions

Question

[Scott McKay]

How accurate is biomaRt's biotype prediction? I just ran a gene list through it (using ENSEMBL ID) and got a list of 'miRNAs' but GeneCards is telling me that some of them are coding genes??? Not sure what is going on, can anyone shed some light?

Answer 1

[Emily]

I'm not sure where GeneCards get their annotation from. You'd have to check their documentation. You can see how Ensembl genes are annotated here. In particular, miRNAs are imported from miRBase.