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Introduction <p>Nemolizumab is a humanized monoclonal antibody targeting interleukin-31 receptor&#xa0;A. It has shown efficacy in treating patients with prurigo nodularis (PN). In this study, we characterized the pharmacokinetic (PK) and pharmacodynamic (PD) profiles of nemolizumab in patients with PN and compared its efficacy with that of another approved treatment, dupilumab, using a model-based meta-analysis (MBMA).</p> Methods <p>We updated an existing population PK (PopPK) model developed for patients with atopic dermatitis (AD) by incorporating data from four clinical studies. The updated model validated the PK of nemolizumab in patients with PN, confirming its relevance and precision. Furthermore, we developed a population PD (PopPD) model to characterize treatment response and assessed changes in the weekly average Peak Pruritus Numerical Rating Scale (PP-NRS) over time. To conduct an MBMA, we performed a systematic literature search of public databases to identify studies for modeling the success rate of achieving a ≥ 4-point improvement in the PP-NRS and a ≥ 2-point decrease in the Investigator’s Global Assessment (IGA).</p> Results <p>The updated PopPK model adequately described the serum concentration profile of nemolizumab in patients with PN, suggesting a similarity in the PK characteristics between AD and PN. The PopPD model successfully described the effects of the placebo and nemolizumab on PP-NRS. Six individual randomized controlled trials were eligible for the MBMA. Model simulations indicated that the success rates for PP-NRS and IGA were consistently higher for nemolizumab compared with dupilumab, up to 24&#xa0;weeks.</p> Conclusion <p>The PopPK and PopPD models well described the PK and PD profiles of nemolizumab in patients with PN. MBMA demonstrated that nemolizumab was superior to dupilumab in improving response rates in patients with PN. These findings, derived from pharmacometrics modeling and indirect comparison, may help inform future clinical studies and support the ongoing evaluation of nemolizumab in PN.</p>

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Quantitative Evaluation of Nemolizumab Pharmacokinetics and Efficacy in Prurigo Nodularis: A Population Pharmacokinetics and Model-Based Meta-analysis Approach

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月29日

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  • Tomoki Takechi,
  • Junya Shimizu,
  • Kenji Kabashima,
  • Ichiro Ieiri

摘要

Introduction

Nemolizumab is a humanized monoclonal antibody targeting interleukin-31 receptor A. It has shown efficacy in treating patients with prurigo nodularis (PN). In this study, we characterized the pharmacokinetic (PK) and pharmacodynamic (PD) profiles of nemolizumab in patients with PN and compared its efficacy with that of another approved treatment, dupilumab, using a model-based meta-analysis (MBMA).

Methods

We updated an existing population PK (PopPK) model developed for patients with atopic dermatitis (AD) by incorporating data from four clinical studies. The updated model validated the PK of nemolizumab in patients with PN, confirming its relevance and precision. Furthermore, we developed a population PD (PopPD) model to characterize treatment response and assessed changes in the weekly average Peak Pruritus Numerical Rating Scale (PP-NRS) over time. To conduct an MBMA, we performed a systematic literature search of public databases to identify studies for modeling the success rate of achieving a ≥ 4-point improvement in the PP-NRS and a ≥ 2-point decrease in the Investigator’s Global Assessment (IGA).

Results

The updated PopPK model adequately described the serum concentration profile of nemolizumab in patients with PN, suggesting a similarity in the PK characteristics between AD and PN. The PopPD model successfully described the effects of the placebo and nemolizumab on PP-NRS. Six individual randomized controlled trials were eligible for the MBMA. Model simulations indicated that the success rates for PP-NRS and IGA were consistently higher for nemolizumab compared with dupilumab, up to 24 weeks.

Conclusion

The PopPK and PopPD models well described the PK and PD profiles of nemolizumab in patients with PN. MBMA demonstrated that nemolizumab was superior to dupilumab in improving response rates in patients with PN. These findings, derived from pharmacometrics modeling and indirect comparison, may help inform future clinical studies and support the ongoing evaluation of nemolizumab in PN.