PTGS2 and cancer: Inflammation is a natural process that is connected to various conditions and disorders such as arthritis, psoriasis, cancer, infections, asthma, etc. Based on the fact that cyclooxygenase isoenzymes (COX-1, COX-2) are responsible for the production of prostaglandins that play an important role in inflammation, traditional treatment approaches include administration of nonsteroidal anti-inflammatory drugs (NSAIDs), which act as selective or non-selective COX inhibitors [1,2,3].