Open Cancer Network is a big data analytics platform enabling identification of unusual patterns causing chronic diseases such as cancer. Open Cancer Network (OCN) is a big data analytics platform enabling identification of unusual patterns causing chronic diseases such as cancer. OCN platform enables collection of non-clinical data such as lifestyle, diet, lifetime exposures to toxins and stressors, and allows users to better understand their disease, to connect with clinical trials and sources of best available treatment. OCN data will form one of the richest datasets available to any researcher in bio-medical and public health fields. We are using Big Data technologies to mine this dataset to identify patterns and correlations that may lead to advances in social epidemiology of cancer and other chronic diseases.