PTGS2 and breast cancer: The results showed that Liver Cirrhosis, Schizophrenia, Myocardial Ischemia, Inflammation, Reperfusion Injury, Mammary Neoplasms, Hypertensive Disease, Brain Ischemia, Mental Depression and Juvenile Arthritis were the 10 diseases with the highest degree of association, and IL6 and PTGS2 were the two genes with the highest degree of association with the diseases (Fig. 4).