Target-mediated drug disposition (TMDD) is the process in which a drug binds with high affinity to its pharmacological target (for example, a receptor) to such an extent that this affects its pharmacokinetic characteristics. Various drug classes can exhibit TMDD, most often these are large compounds (biologics such as antibodies, cytokines or growth factors [1] ) but also smaller compounds can exhibit TMDD (such as warfarin and CHK-336). [2] A typical TMDD pattern of antibodies displays non-linear clearance and can be seen at concentration ranges that are usually defined as 'mid-to-low'. In this concentration range, the target is partly saturated. [3] [4]
