Abstract
Importance
Treatment of congenital ichthyoses primarily focuses on reversing skin scaling and is not pathogenesis based. Recent studies showed Th17 immune skewing, as in psoriasis, across the spectrum of ichthyosis, suggesting that targeting this pathway might broadly reduce disease severity.
Objective
To determine whether secukinumab, an IL-17A inhibitor, can improve ichthyosis across several congenital ichthyosis subtypes.
Design
Exploratory 16-week double-blind, randomized, placebo-controlled trial comparing secukinumab 300 mg every 4wks to placebo (1:1 randomization) in adults with the four major congenital ichthyosis subtypes (NCT03041038), followed by a 16-week open-label phase to evaluate response of the placebo-first group and a 20-week extension for safety. Significant differences in secukinumab- vs. placebo-treated subjects at Wk16 in the Ichthyosis Area Severity Index (IASI) score and lack of increased mucocutaneous bacterial and/or fungal infections were the co-primary efficacy and safety endpoints, respectively.
Setting
Two tertiary referral centers: Northwestern University Feinberg School of Medicine, Chicago, and Mount Sinai Icahn School of Medicine, New York.
Participants
Twenty subjects ≥ 18 yo with genotype-confirmed epidermolytic ichthyosis, Netherton syndrome, lamellar ichthyosis, or congenital ichthyosiform erythroderma with at least moderate erythroderma.
Results
IL-17A inhibition did not significantly reduce severity or increase mucocutaneous infections among the 18 who completed the 16-week double-blind phase. Five patients with 29–50% clinical improvement at Wk32 requested drug continuation. Th17-related biomarkers were not significantly reduced vs. baseline or placebo-treated levels.
Limitations
Small sample size; heterogeneous ichthyosis subsets.
Conclusion
IL-17 inhibition with secukinumab is safe, but not efficacious across the spectrum of adult ichthyoses.
ClinicalTrials.gov registration number
NCT03041038; first posted on 02/02/2017.
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Data availability
The minimal dataset that supports the central findings of this study can be requested from the corresponding authors.
Abbreviations
- AE:
-
Adverse event(s)
- ARCI:
-
Autosomal recessive congenital ichthyosis
- CIE:
-
Congenital ichthyosiform erythroderma
- DLQI:
-
Dermatology Life Quality Index
- EI:
-
Epidermolytic ichthyosis
- IASI:
-
Ichthyosis Area Severity Index
- IASI-E:
-
Erythema Subscore of Ichthyosis Area Severity Index
- IASI-S:
-
Scaling Subscore of Ichthyosis Area Severity Index
- IRB:
-
Institutional review board
- iQoL-32:
-
Ichthyosis quality of life-32 items
- LI:
-
Lamellar ichthyosis
- LOCF:
-
Last-observation carried forward
- NRS:
-
Numerical Rating Scale
- NS:
-
Netherton syndrome
- PASI:
-
Psoriasis Area Severity Index
- PRO:
-
Patient-reported outcome
- SAE:
-
Serious adverse event
- SD:
-
Standard deviation
- TEWL:
-
Transepidermal water loss
- VIIS:
-
Visual Index for Ichthyosis Severity
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Funding
Investigator-initiated grant from Novartis CAIN457AUS05T (AP, EG); genotyping was supported by NIH R01AR068392 (KC), biosample management through NIH P30AR075049 (Northwestern’s Skin Biology and Disease Resource-based Center/SBDRC) (AP), and regulatory support and some of the clinical statistical analyses through NIH UL1TR001422 (Northwestern University Clinical and Translational Sciences Institute/NUCATS and its Biostatistics Collaboration Center. Dr. Lefferdink received salary funding from a National Psoriasis Foundation fellowship grant.
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Contributions
Study conception and design were performed by Erin Ibler, EG-Y, and ASP. Material preparation, data collection and analysis were performed by RL, SMR, MC, EI, ABP, HK, BW, HA-Z, JW, KJ, GS, KAC, EG-Y and ASP. The first draft of the manuscript was written by RL, SMR, EG-Y and ASP, and all authors read and approved the final manuscript.
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Conflict of interest
Drs. Lefferdink, Chima, Ibler, Pavel, Kim, Wu, and Rangel, and Ms. Abu-Zayed, Wu, Jackson, and Singer declare no conflicts. Dr. Choate has been an investigator for Alderya, Mayne, Galderma, and Regeneron and consultant with honorarium for AbbVie, Eli Lilly, Janssen, KrystalBio, Lifemax, Mayne, and Timber. Dr. Guttman-Yassky has been a researcher/consultant for AbbVie, Anacor, AnaptysBio, Asana Biosciences, Botanix, Celgene, DBV, Dermira, DS Biopharma, Escalier, Galderma, Glenmark, Innovaderm, Janssen, Kyowa Kirin, Leo Pharma, Lilly, MedImmune/AstraZeneca, Mitsubishi Tanabe, Novan, Novartis, Pfizer, Promius, Ralexar, Regeneron, Sanofi-Aventis, Stiefel/GlaxoSmithKline (GSK), UCB, and Vitae. Dr. Paller has been an investigator for AbbVie, AnaptysBio, Eli Lilly, Incyte, Janssen, KrystalBio, Novartis, Regeneron, and UCB and a consultant with honorarium for Abbvie, Abeona, Alcimed, Almirall, Amagma, Anaptysbio, Arena, Azitra, BiomX, Boehringer Ingelheim, Castle Biosciences, Catawba, Dermira, Eli Lilly, Exicure, Forte, Kamari, Leo, Lifemax, NAOS, Novartis, Pfizer, Phoenix, Pierre Fabre, Regeneron, Sanofi/Genzyme, Seanergy, Trifecta, and UCB. She has served on Data Safety Monitoring Boards for AbbVie, Bausch, Galderma, and Novan.
Ethics approval
This study was reviewed and approved by the institutional review boards of Northwestern University and Icahn School of Medicine at Mount Sinai Medical Center. IRB #: STU00202656/STU00202022 (NU); 17–00126 (MS).
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Informed consent was obtained from all individual participants included in the study.
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Lefferdink, R., Rangel, S.M., Chima, M. et al. Secukinumab responses vary across the spectrum of congenital ichthyosis in adults. Arch Dermatol Res 315, 305–315 (2023). https://doi.org/10.1007/s00403-022-02325-3
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DOI: https://doi.org/10.1007/s00403-022-02325-3