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Clinical Trial
. 2019 Apr;74(4):743-752.
doi: 10.1111/all.13685. Epub 2019 Jan 21.

Dupilumab reduces local type 2 pro-inflammatory biomarkers in chronic rhinosinusitis with nasal polyposis

Affiliations
Clinical Trial

Dupilumab reduces local type 2 pro-inflammatory biomarkers in chronic rhinosinusitis with nasal polyposis

Karin Jonstam et al. Allergy. 2019 Apr.

Abstract

Background: Chronic rhinosinusitis with nasal polyposis (CRSwNP) is a type 2-mediated inflammatory disease associated with significant clinical, social, and economic burdens and high unmet therapeutic need. Dupilumab, a fully human monoclonal antibody targeting the interleukin-4 receptor α (IL-4Rα) subunit, demonstrated efficacy and acceptable safety in CRSwNP and other type 2 diseases (eg, atopic dermatitis and asthma). We now report the local effects of dupilumab on type 2 inflammatory biomarkers in nasal secretions and nasal polyp tissues of patients with CRSwNP in a randomized, placebo-controlled, phase 2 trial (NCT01920893).

Methods: Cytokines, chemokines, and total immunoglobulin E (IgE) levels were measured using immunoassay techniques in nasal secretions and nasal polyp tissue homogenates of CRSwNP patients receiving dupilumab 300 mg or placebo weekly for 16 weeks.

Results: With dupilumab, type 2 biomarker concentrations decreased in nasal secretions (least squares mean area under the curve from 0 to 16 weeks for the change from baseline) vs placebo for eotaxin-3 (-30.06 vs -0.86 pg/mL; P = 0.0008) and total IgE (-7.90 vs -1.86 IU/mL; P = 0.022). Dupilumab treatment also decreased type 2 biomarker levels in nasal polyp tissues at Week 16 vs baseline for eosinophilic cationic protein (P = 0.008), eotaxin-2 (P = 0.008), eotaxin-3 (P = 0.031), pulmonary and activation-regulated chemokine (P = 0.016), IgE (P = 0.023), and IL-13 (P = 0.031).

Conclusions: Dupilumab treatment reduced multiple biomarkers of type 2 inflammation in nasal secretions and polyp tissues of patients with CRSwNP, demonstrating that antagonism of IL-4Rα signaling suppresses IL-4-/IL-13-dependent processes, such as mucosal IgE formation, as well as the expression of chemokines attracting inflammatory cells to the nasal mucosa.

Keywords: biomarkers; dupilumab; nasal polyposis; nasal secretions; type 2 inflammation.

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Conflict of interest statement

K. Jonstam is the sub‐investigator of the study. B.N. Swanson, L. Mannent L, N. Tian, Y. Wang, D. Zhang, C. Fan, A. Grabher, and G. Pirozzi are employees of and may hold stock and/or stock options in Sanofi. L‐O. Cardell is an associate investigator of the study. G. Holtappels has nothing to disclose. J.D. Hamilton and N.M.H. Graham are employees and shareholders of Regeneron Pharmaceuticals, Inc. C. Bachert is the principal investigator of the study.

Figures

Figure 1
Figure 1
Biomarker concentrations in nasal secretions from patients with CRSwNP in the overall study population. Mean changes from baseline to Week 16 in (A) total IgE, (B) eotaxin‐3, and (C) ECP concentrations. ECP, eosinophil cationic protein; IgE, immunoglobulin E; IU, international units; MFNS, mometasone furoate nasal spray; SE, standard error. *< 0.05; **< 0.001 vs placebo. P values are nominal, not corrected for multiplicity, and based on the LS mean differences in AUC0‐16 between patients in the dupilumab group vs the placebo group
Figure 2
Figure 2
Biomarker concentrations in the nasal polyp tissue biopsies of patients with CRSwNP in the biopsy subgroup. Concentrations at baseline and Week 16 (end of treatment) in the dupilumab (n = 8) and placebo (n = 4) groups. (A) Total IgE, (B) ECP, (C) eotaxin‐2, (D) eotaxin‐3, (E) PARC, and (F) IL‐13. ECP, eosinophil cationic protein; IgE, immunoglobulin E; IL, interleukin; PARC, pulmonary and activation‐regulated chemokine. P values for end of treatment vs baseline are reported
Figure 3
Figure 3
Biomarker concentrations in the nasal polyp tissue biopsies of patients with CRSwNP in the biopsy subgroup. Median changes from baseline at Week 16 (end of treatment) in the dupilumab (n = 8) and placebo (n = 4) groups in (A) ECP, (B) eotaxin‐1, and (C) PARC concentrations. CRSwNP, chronic rhinosinusitis with nasal polyposis; ECP, eosinophil cationic protein; PARC, pulmonary and activation‐regulated chemokine. P values are nominal, not corrected for multiplicity. Error bars represent the interquartile range

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