COX-2 inhibition and thrombotic tendency: a need for surveillance

Cyclooxygenase-2 (COX-2) inhibitors belong to a new class of drugs which ha ve anti-inflammatory efficacy similar to that of traditional non-steroidal antiinflammatory drugs (NSAIDs), but are associated with a reduced incidenc e of adverse upper gastrointestinal events. Biochemical evidence that COX-2 inhibitors could promote or exacerbate a te ndency to thrombosis is supported by recent results from clinical trials an d case reports. Two agents in this class, celecoxib and rofecoxib, have been listed on the Pharmaceutical Benefits Scheme (PBS) for very broad indications in chronic arthropathies, suggesting that they will move into widespread community use . It is important to canvass the possibility that use of these agents could b e associated with thrombotic events.