MutEx is an integrative database constructed from genomic and clinical data collected from subjects of 33 distinct cancer types. It stores and explores the intrinsic causal relationships among somatic mutation, expression dysregulation, mutational burden and survival. The database has several major functionalities, illustrated with the figure below.

MutEx Paper https://www.ncbi.nlm.nih.gov/pubmed/31588509
MutEx: a multifaceted gateway for exploring integrative pan-cancer genomic data. Briefings in bioinformatics, 2019