The AAPS Journal

, Volume 16, Issue 5, pp 938–947

Biological Products for the Treatment of Psoriasis: Therapeutic Targets, Pharmacodynamics and Disease-Drug-Drug Interaction Implications

Review Article


Psoriasis is a chronic inflammatory skin disease condition that involves altered expression of a broad spectrum of proinflammatory cytokines which are associated with activation of T cells and proliferation of keratinocytes. Currently approved biological products for psoriasis treatment fall into two main classes: cytokine modulators and biologics targeting T cells. In psoriatic patients, elevated levels of proinflammatory cytokines are observed. Elevated proinflammatory cytokines can suppress some cytochrome P450 (CYP) enzymes, and the treatment of psoriasis with biological products can reduce proinflammatory cytokine levels. Therefore, the exposure of CYP substrate drugs is anticipated to be affected by the psoriasis disease resulting in a higher exposure than in healthy state (named disease-drug interaction) as well as by the biological treatments due to disease improvements resulting in a decrease in exposure (named disease-drug-drug interaction, disease-DDI). However, the quantitative impact on CYP substrate exposure due to disease or due to treatment with biological products remains to be evaluated. The objective of the current review is to provide an overview of the therapeutic targets and cytokine-related pharmacodynamic effects of biological products in psoriasis treatment with a particular focus on their implications for disease-DDI. The clinical study design considerations for psoriasis disease-DDI evaluation are also discussed.

Key words

disease-drug-drug interactions (Disease-DDI) inflammatory disease IL-6 interleukin-6 proinflammatory cytokines psoriasis 



Cytochrome P450


Disease-drug-drug interactions




Tumor necrosis factor α


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Copyright information

© American Association of Pharmaceutical Scientists 2014

Authors and Affiliations

  1. 1.Division of Clinical Pharmacology III, Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and ResearchUS Food and Drug AdministrationSilver SpringUSA

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