DDI Marker Studies Knowledgebase – quarterly update

The DDI Marker Studies Knowledgebase (replacing the previous combined and individual lists of CYP/P-gp substrates and perpetrators) has been updated in April 2023, and is available in the DIDB Resource Center.

In this update, 38 compounds were identified as substates, inhibitors, and inducers of CYP enzymes and transporters (P-gp, BCRP, and OATP1B1/3). Among them, 6 compounds (16%) could lead to strong drug interactions mediated by CYP3A and CYP2D6.

In addition to substrates, inhibitors and inducers of CYPs and transporters, the Knowledgebase provides useful information on the compounds therapeutic class, clinical recommended dosage, pharmacokinetics (e.g. dose proportionality accumulation ratio, time to steady-state), QT prolongation, and NTI characteristics.

As always, feel free to contact us if you have any questions or comments.