Discrepancy in gene locations between biomart and ncbi

Question

[ciclustigu]

I am trying to get gene locations from a list of genes of interest. As far as I know, it is possible to find them by using ensembl biomart. After selecting gene start and end for as attributes, I get the values.

However, I found that the locations are different from those provided by NCBI gene (considering for both GRCh37.p13)

Do you know the reason?

How do you get gene locations from a list of entrez id ?

[Devon Ryan]

Can you give an example or two?