Jak pros and cons13 Oct 2024 13:07
As JAKis block cytokines that are involved in multiple pathways, they may have multi-system impacts. However, given the differences in inhibitory potency of individual JAKis for each JAK isoform, each molecule has a unique clinical toxicity profile, as supported by extensive pre-clinical and clinical findings. Long-term extension (LTE) and other post-marketing studies remain necessary to evaluate JAKi safety in the treatment of chronic inflammatory conditions, particularly considering that these diseases themselves are often associated with increased risk [2]. Recently raised concerns include increased risk of cardiovascular and thromboembolic events in certain higher-risk patient populations, highlighting the potential ramifications of JAK/STAT pathway inhibition, particularly with pan- or multi-JAKis [2]. However, there is no robust compelling evidence to date supporting that the mechanism of action of JAKis would be the reason for a potential increased risk for cardiovascular events or malignancies. Moreover, JAKis may decrease the risk of these events by decreasing disease activity, since chronic inflammation is a well-known independent risk factor for these