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Start Over Author "Baeten, D" Publication Type Academic Journals
345 results on '"Baeten, D"'

15. Bimekizumab for the treatment of moderate‐to‐severe plaque psoriasis: efficacy, safety, pharmacokinetics, pharmacodynamics and transcriptomics from a phase IIa, randomized, double‐blind multicentre study*.

Author

Oliver, R., Krueger, J.G., Glatt, S., Vajjah, P., Mistry, C., Page, M., Edwards, H., Garcet, S., Li, X., Dizier, B., Maroof, A., Watling, M., el Baghdady, A., Baeten, D., Ionescu, L., and Shaw, S.

Subjects
ADALIMUMAB, CLINICAL trials, PSORIASIS, TOOTHBRUSHES, PHARMACOKINETICS, PHARMACODYNAMICS, MONOCLONAL antibodies
Abstract

Summary: Background: Bimekizumab is a monoclonal antibody that selectively inhibits both interleukin (IL)‐17A and IL‐17F, which is currently under investigation for treatment of moderate‐to‐severe plaque psoriasis. Maintenance dosing every 4 weeks is well established with IL‐17 inhibitors for psoriasis. Objectives: To investigate the possible dosing interval during bimekizumab maintenance therapy to maintain clear skin, to inform phase III studies. Methods: Forty‐nine patients with moderate‐to‐severe plaque psoriasis received bimekizumab 320 mg at weeks 0/4, followed at week 16 by bimekizumab 320 mg (n = 17) or placebo (n = 32). Efficacy, safety, pharmacokinetics, immunogenicity and biopsy transcriptomic analyses were assessed to week 28. Results: At week 8, 47% of patients achieved a 100% improvement from baseline in Psoriasis Area and Severity Index (PASI 100), increasing to 57% at week 12 (8 weeks after the second dose) before decreasing. In those who received bimekizumab at week 16, PASI 100 rate increased to comparable peak levels at week 20, but reduced by week 28 to 41% (12 weeks after the third dose). The week 8 transcriptional signature observed in lesional psoriatic skin rapidly normalized to levels consistent with nonlesional skin, resulting in molecular remission. Keratinocyte‐related gene products such as CXCL1 (C‐X‐C motif chemokine ligand 1), IL‐8 (encoded by the CXCL8 gene), CCL20 (C‐C motif chemokine 20), IL‐36γ and IL‐17C were profoundly normalized to levels associated with nonlesional skin. Conclusions: Here, inhibition of IL‐17F in addition to IL‐17A resulted in rapid, deep clinical responses. Additionally, profound normalization of keratinocyte biology and the psoriatic transcriptome was observed, including normalization of both IL17 and IL23 gene expression by week 8. These data provide evidence to support evaluation of bimekizumab maintenance dosing both every 8 and every 4 weeks in phase III clinical trials. [ABSTRACT FROM AUTHOR]

Published
2022
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48. Dysregulated Fcγ receptor IIa‐induced cytokine production in dendritic cells of lupus nephritis patients.

Author

Newling, M., Fiechter, R. H., Sritharan, L., Hoepel, W., Burgsteden, J. A., Hak, A. E., Vollenhoven, R. F., Sande, M. G. H., Baeten, D. L. P., and den Dunnen, J.

Subjects
LUPUS nephritis, DENDRITIC cells, CYTOKINE receptors, TYPE I interferons, SYSTEMIC lupus erythematosus, IMMUNE complexes
Abstract

Summary: Systemic lupus erythematosus (SLE) is an autoimmune disease of unknown etiology. One of the key factors associated with SLE pathogenesis is excessive production of type I interferons (IFNs). This could result from increased activation of type I IFN‐stimulating pathways, but also from decreased activation of type I IFN‐inhibitory pathways. Recently, we have identified that immunoglobulin (Ig)G immune complexes strongly inhibit type I IFN production in healthy individuals by inhibitory signaling through Fcγ receptor IIa (FcγRIIa) on dendritic cells (DCs). Because, in SLE patients, immune complexes are characteristically present, we assessed whether FcγR‐induced suppression of type I IFN is functional in DCs of SLE patients. We divided the SLE patients into one group without, and one group with, previous major organ involvement, for which we chose nephritis as a prototypical example. We show that DCs of lupus nephritis patients displayed impaired FcγR‐mediated type I IFN inhibition compared to SLE patients without major organ involvement or healthy controls. We verified that this impaired type I IFN inhibition was not related to differences in disease activity, medication, FcγRIIa expression or expression of IFN regulatory transcription factors (IRF)1 and IRF5. In addition, we identified that DCs of lupus nephritis patients show increased FcγR‐induced interleukin (IL)‐1β production, which is another important cytokine that promotes kidney inflammation. Taken together, these data indicate that DCs of lupus nephritis patients display altered FcγR‐mediated regulation of cytokine production, resulting in elevated levels of type I IFN and IL‐1β. This dysregulation may contribute to the development of nephritis in SLE patients. [ABSTRACT FROM AUTHOR]

Published
2020
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49. An add-on training program involving breathing exercises, cold exposure, and meditation attenuates inflammation and disease activity in axial spondyloarthritis – A proof of concept trial.

Author

Buijze, G. A., De Jong, H. M. Y., Kox, M., van de Sande, M. G., Van Schaardenburg, D., Van Vugt, R. M., Popa, C. D., Pickkers, P., and Baeten, D. L. P.

Subjects
BREATHING exercises, PROOF of concept, CLINICAL trial registries, MEDITATION, CALPROTECTIN, ADVERSE health care events, INDUSTRIAL safety education
Abstract

Objectives: The primary objective of this trial was to assess safety and anti-inflammatory effects of an add-on training program involving breathing exercises, cold exposure, and meditation in patients with axial spondyloarthritis Methods: This study was an open-label, randomised, one-way crossover clinical proof-of-concept trial. Twenty-four patients with moderately active axial spondyloarthritis(ASDAS >2.1) and hs-CRP ≥5mg/L were included and randomised to an intervention (n = 13) and control group (n = 11) group that additionally received the intervention after the control period. The intervention period lasted for 8 weeks. The primary endpoint was safety, secondary endpoints were change in hs-CRP, serum calprotectin levels and ESR over the 8-week period. Exploratory endpoints included disease activity measured by ASDAS-CRP and BASDAI, quality of life (SF-36, EQ-5D, EQ-5D VAS), and hospital anxiety and depression (HADS). Results: We found no significant differences in adverse events between groups, with one serious adverse event occurring 8 weeks after end of the intervention and judged 'unrelated'. During the 8-week intervention period, there was a significant decline of ESR from (median [interquartile range] to 16 [9–26.5] to 9 [5–23] mm/hr, p = 0.040, whereas no effect was found in the control group (from 14 [8.3–27.3] to 16 [5–37] m/hr, p = 0.406). ASDAS-CRP declined from 3.1 [2.5–3.6] to 2.3 [1.9–3.2] in the intervention group (p = 0.044). A similar trend was observed for serum calprotectin (p = 0.064 in the intervention group versus p = 0.182 in the control group), but not for hs-CRP. Conclusions: This proof-of-concept study in axial spondyloarthritis met its primary endpoint with no safety signals during the intervention. There was a significant decrease in ESR levels and ASDAS-CRP upon the add-on training program in the intervention group. These findings warrant full-scale randomised controlled trials of this novel therapeutic approach in patients with inflammatory conditions. Trial registration: ClinicalTrials.gov; NCT02744014 [ABSTRACT FROM AUTHOR]

Published
2019
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