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Effect of Ponesimod Exposure on Total Lymphocyte Dynamics in Patients with Multiple Sclerosis

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Abstract

Objective

The aim of this study was to characterize the relationship between ponesimod plasma concentrations and the temporal evolution of lymphocyte counts in multiple sclerosis (MS) patients.

Methods

Population pharmacokinetic (PK) and PK/pharmacodynamic (PD) models were developed using data from phase I, II, and III trials, and the impact of clinically relevant covariates on PK and PD parameters was assessed. Simulations were conducted to evaluate the maximal lymphocyte count reduction after ponesimod treatment, and the time required for total lymphocyte counts to return to normal values after treatment interruption.

Results

In MS patients, ponesimod PK were characterized by a low mean apparent plasma clearance (5.52 L/h) and a moderate mean apparent volume of distribution at steady state (239 L). The model developed indicated that none of the evaluated covariates (age, sex, formulation, food, body weight, clinical condition, and renal impairment) had a clinically relevant impact on the PK/PD parameters. In MS patients, total lymphocyte counts were characterized by a maximum reduction of 88.0% and a half maximal inhibitory concentration (IC50) of 54.9 ng/mL. Simulations indicated that in patients with normal hepatic function treated with ponesimod 20 mg daily, total lymphocyte counts were reduced to 41% of baseline at trough. After stopping treatment, lymphocyte counts were restored to normal levels within one week.

Conclusions

The population PK/PD model well-characterized the PK of ponesimod and the time course of total lymphocyte counts in MS patients. Additionally, none of the evaluated covariates had a clinically relevant impact. This should be taken into consideration when assessing the risk of infection, administration of live-attenuated vaccines, and concomitant use of immunosuppressants.

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Fig. 1

Modified from Lott et al. [17]. Circles denote compartments, solid lines denote drug flow with associated PK parameters, dotted lines indicate relationships. amp amplitude of the circadian rhythm, CL/F apparent clearance, Doral oral dose, Fr fraction of the drug absorbed via zero order, IC50 concentration required to reach half-maximum ponesimod effect, Imax maximum ponesimod effect, ka first-order absorption rate constant, kout first-order output rate constant, shift time shift of the circadian rhythm, PD pharmacodynamics, PK pharmacokinetics, Q/F apparent intercompartmental drug flow, Rin zero-order input rate, Tk0 duration of the zero-order absorption, Tlag absorption lag time, Vc/F apparent central volume of distribution, Vp/F apparent peripheral volume of distribution

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Acknowledgements

The authors thank the study participants, without whom this study would never have been accomplished, and all the investigators and their medical, nursing and laboratory staff for their participation in this study. The authors also thank Colleen Elliott for writing assistance and editorial support.

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Authors and Affiliations

Authors

Corresponding author

Correspondence to Belén Valenzuela.

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Funding

This study was supported by Actelion Pharmaceuticals Ltd, Part of Janssen Pharmaceutical Companies, Allschwil, Switzerland.

Conflicts of interest

Belén Valenzuela and Juan Jose Perez-Ruixo are employees of Janssen-Cilag Spain, part of the Janssen Pharmaceutical Company of Johnson & Johnson, and hold stock in Johnson & Johnson. Quentin Leirens was an employee of SGS Exprimo, part of SGS Belgium NV, at the time this analysis was conducted. Sivi Ouwerkerk-Mahadevan is an employee of Janssen NV, part of the Janssen Pharmaceutical Company of Johnson & Johnson, and holds stock in Johnson & Johnson. Italo Poggesi is an employee of Janssen-Cilag Italy, part of Janssen Pharmaceutical Company of Johnson & Johnson, and holds stock in Johnson & Johnson.

Ethics approval

All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Protocols were reviewed and approved by an Institutional Review Board.

Consent to participate

Freely given, informed consent to participate was obtained for all human participants in this study.

Consent for publication

Not applicable.

Availability of data and material

The data sharing policy of the Janssen Pharmaceutical Companies of Johnson & Johnson is available at https://www.janssen.com/clinical–trials/transparency. As noted on that site, requests for access to the study data can be submitted through the Yale Open Data Access (YODA) Project site at http://yoda.yale.edu.

Code availability

Not applicable.

Author contributions

All authors participated in the original design of the studies and monitoring of data quality, and contributed to data interpretation, and development and review of this manuscript. They confirm that they have read the journal’s position on issues involved in ethical publication and affirm that this report is consistent with those guidelines. All authors meet the International Committee of Medical Journal Editors (ICMJE) criteria and all those who fulfilled those criteria are listed as authors. All authors had access to the study data, provided direction and comments on the manuscript, made the final decision on where to publish these data, and approved submission to this journal.

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Cite this article

Valenzuela, B., Pérez-Ruixo, JJ., Leirens, Q. et al. Effect of Ponesimod Exposure on Total Lymphocyte Dynamics in Patients with Multiple Sclerosis. Clin Pharmacokinet 60, 1239–1250 (2021). https://doi.org/10.1007/s40262-021-01019-9

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  • DOI: https://doi.org/10.1007/s40262-021-01019-9

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