SCR130 is a SCR7-based DNA nonhomologous end-joining (NHEJ) inhibitor. SCR130 inhibits the end-joining of DNA in a Ligase IV-dependent manner. SCR130 is specific to Ligase IV, and shows minimal or no effect on Ligase III and Ligase I mediated joining. SCR130 induces cell apoptosis and has anticancer activity[1].