Malumbres et al., categorized<unk> s based on their target specificity: * Broad<unk> s: compounds targeting a broad spectrum of<unk> s * Specific<unk> s: compounds targeting a specific type of<unk>  * Multiple target<unk> s: compounds targeting<unk> s as well as additional kinases such as VEGFR or PDGFR
CDK inhibitor
Histone deacetylase inhibitor
MEK inhibitor
Protein kinase inhibitor
RET inhibitor
COX-2 inhibitor
Topoisomerase inhibitor
Growth factor receptor inhibitor