This pathway is modeled after Figure 4 in the article "The ATM signaling network in development and disease" (See Bibliography). When DNA is damaged, DDR begins to work on recuperating the damage through the appropriate cellular programs such as transcription, translation, etc etc. The ataxia-telangiectasia mutated (ATM) kinase acts as the main core of this pathway acting upon or receiving a lot of the reactions towards other gene products.