Enhancing treatment success in inflammatory bowel disease: Optimising the use of anti-TNF agents and utilising their biosimilars in clinical practice.

Anti-tumour necrosis factor (TNF) agents such as infliximab and adalimumab have greatly altered the treatment landscape in inflammatory bowel disease (IBD). However, there are remaining unmet needs and opportunities to optimise their use. Recent data suggest that proactive therapeutic drug monitoring may lead to more efficient usage of these agents, with potential for higher rates of corticosteroid-free clinical remission than with reactive monitoring. Expanded application of faecal calprotectin measurements may also be valuable, given the ease of use of the assay and its proven effectiveness as a diagnostic tool and predictor of relapse risk. From a practical viewpoint, improved multidisciplinary working may be essential to optimise patient care, with IBD nurse specialists playing an increasingly central role within this model. Finally, the availability of biosimilars of the anti-TNF agents allow drug costs to be reduced without compromising safety or efficacy - thereby providing opportunities to improve accessibility. Alongside extensive data on originator to biosimilar infliximab switch, new studies are beginning to demonstrate the safety of biosimilar to biosimilar switch, as well as adalimumab biosimilar transitions. The risk of a nocebo effect when switching to a biosimilar can be reduced through improved patient education and preparation.