A circos plot cartoon is used to describe the relationship between endogenous and exogenous inducers or modulators of DNA damage. This DNA damage may collaborate with DNA repair inhibition to create a clinical synthetic lethal event. Endogenous effectors include genomic instability, somatic/germline mutations, cell cycle defects and oncogenic drivers; whereas, exogenous effectors include the events within the cancer cell microenvironment, immune- or tumor/vascular/stromal-mediated DNA injury, and exogenous processes such as ambient or therapeutic radiation and chemotherapeutics.
Abbreviations: TOP1/2i, topoisomerase 1/2 inhibitor; i, inhibitor