Co-expression of two genes

Question

[rob.costa1234]

I want to study coexpression of two genes in various tumor and matched normal publically available datasets. Is there a database which can make things little easier to query genes in particular dataset without reanalyzing the datasets.

Answer 1

[GenoMax]

http://www.cbioportal.org/
https://genome-cancer.ucsc.edu/

Answer 2

[Jean-Karim Heriche]

Expression atlas: https://www.ebi.ac.uk/gxa/home