This study is open to adults with moderate to severe hidradenitis suppurativa (HS). The purpose of this study is to find out whether a medicine called spesolimab helps people with HS. People who have previously taken specific medicines such as immunosuppressive biologics other than Tumor necrosis factor (TNF) inhibitors cannot take part. This study has 2 parts. In Part 1, participants are divided into 4 groups of almost equal size. 3 groups get different doses of spesolimab, 1 group gets placebo. All participants get injections into a vein or under the skin. Placebo injections look like spesolimab injections, but do not contain any medicine. Every participant has an equal chance of being in each group. In the beginning, participants get the study medicine every week and later every 2 weeks. After 4 months, participants in the placebo group switch to spesolimab treatment. In Part 2, participants are divided into 2 groups. One group gets a suitable dose of spesolimab that was found in Part 1 of the study. The other group gets placebo. After 4 months, participants in the placebo group switch to spesolimab treatment. Participants join only one of the two parts. They are in the study for about 1 year. During this time, they visit the study site in the beginning every week and later every 2 weeks. Some of the visits can be done at the participant's home instead of the study site. The doctors regularly check participants' HS symptoms. The results are compared between the groups to see whether spesolimab works. The doctors also regularly check participants' general health and take note of any unwanted effects.
Main endpoints for Part 2 will be supported by Part 1 results available at time of primary analysis.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
209
Weekly dose of spesolimab via i.v. for 4 weeks.
Weekly s.c. dose of spesolimab for 4 weeks (3 weeks for Placebo), and maintenance s.c. dose of spesolimab every two weeks until the end of the treatment.
Weekly dose of placebo via i.v. for 4 weeks.
Weekly s.c. dose of placebo for 4 weeks, and once every 2 weeks for the following 7 weeks.
First OC Dermatology
Fountain Valley, California, United States
Dermatology Research Associates
Los Angeles, California, United States
Integrative Skin Science and Research-Sacramento-69402
Sacramento, California, United States
Clinical Trials Research Institute
Thousand Oaks, California, United States
Ziaderm Research
North Miami Beach, Florida, United States
Part 1 - Percent Change From Baseline in Draining Fistula/Tunnel (dT) Count at Week 8
Percent change from baseline in draining fistula/tunnel (dT) count at Week 8 is reported. Tunnel/fistula/sinus were counted as dT only if draining. Percent change was calculated as follows: (dT count at week 8 - dT count at baseline)/ dT at baseline. Least square means and standard errors were estimated by Mixed effect model for repeated measurements (MMRM). The MMRM included fixed categorical effects of treatment at each visit, Tumor Necrosis Factor inhibitor (TNFi) status at baseline, and categorical baseline dT count at each visit. Visit were treated as the repeated measure with an unstructured covariance structure used to model the within-trial participant measurements.
Time frame: The MMRM model incorporates dT count from baseline (Week 0), Week 2, Week 4, Week 6 and Week 8. The data represent the Least Squares Means at Week 8.
Part 1 - Percent Change From Baseline in Draining Fistula/Tunnel (dT) Count at Week 16
Percent change from baseline in draining fistula/tunnel (dT) count at Week 16 is reported. Tunnel/fistula/sinus were counted as dT only if draining. Least square means and standard errors were estimated by MMRM, which included fixed categorical effects of treatment at each visit, TNFi status at baseline, categorical baseline dT count and fixed continuous effect of baseline of outcome measures at each visit. Visit was treated as repeated measure with an unstructured covariance matrix for the within trial participant variability and all visits with planned measurements of the outcome variable as well as all dose groups were included in the model.
Time frame: The MMRM model incorporates dT count from baseline (Week 0), Week 2, Week 4, Week 6, Week 8, Week 10, Week 12, Week 14 and Week 16. The data represent the Least Squares Means at Week 16.
Part 1 - Absolute Change From Baseline in International Hidradenitis Suppurativa Severity Score System (IHS4) Value at Week 8
IHS4 is a validated, clinical scoring system for dynamic assessment of HS severity. The score was calculated as: (number of nodules x1) + (number of abscesses x2) + (number of draining tunnels \[fistulae/sinuses\] x4). The minimum is 0, the maximum depends on the count of nodules, abscesses, and draining tunnels. Scores 0-3 indicate mild HS, 4-10 moderate HS, ≥11 severe HS. Absolute change from baseline was calculated as follows: (IHS4 value at visit timepoints) - (IHS4 value at baseline). Least square means and standard errors were estimated by MMRM, which included fixed categorical effects of treatment at each visit, TNFi status at baseline, categorical baseline dT count and fixed continuous effect of baseline of outcome measures at each visit. Visit was treated as repeated measure with an unstructured covariance matrix for the within trial participant variability and all visits with planned measurements of the outcome variable as well as all dose groups were included in the model.
Time frame: The MMRM model incorporates IHS4 value from baseline (Week 0), Week 2, Week 4, Week 6 and Week 8. The data represent the Least Squares Means at Week 8.
Part 1 - Absolute Change From Baseline in International Hidradenitis Suppurativa Severity Score System (IHS4) Value at Week 16
IHS4 is a validated, clinical scoring system for dynamic assessment of HS severity. The score was calculated as: (number of nodules x1) + (number of abscesses x2) + (number of draining tunnels \[fistulae/sinuses\] x4). The minimum is 0, the maximum depends on the count of nodules, abscesses, and draining tunnels. Scores 0-3 indicate mild HS, 4-10 moderate HS, ≥11 severe HS. Absolute change from baseline was calculated as follows: (IHS4 value at visit timepoints) - (IHS4 value at baseline). Least square means and standard errors were estimated by MMRM, which included fixed categorical effects of treatment at each visit, TNFi status at baseline, categorical baseline dT count and fixed continuous effect of baseline of outcome measures at each visit. Visit was treated as repeated measure with an unstructured covariance matrix for the within trial participant variability and all visits with planned measurements of the outcome variable as well as all dose groups were included in the model.
Time frame: The MMRM model incorporates IHS4 from baseline (Week 0), Week 2, Week 4, Week 6, Week 8, Week 10, Week 12, Week 14 and Week 16. The data represent the Least Squares Means at Week 16.
Part 1 - Occurrence of Treatment Emergent Adverse Events (TEAEs)
The occurrence of treatment emergent adverse events (TEAEs) is reported as the number of patients with TEAEs.
Time frame: From first drug administration until end of exposure, plus residual effect period, up to approximately 68 weeks.
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ForCare Clinical Research, Inc.
Tampa, Florida, United States
Olympian Clinical Research-Tampa-69560
Tampa, Florida, United States
Dawes Fretzin Clinical Research Group, LLC-Indianapolis -68995
Indianapolis, Indiana, United States
Skin Sciences, PLLC
Louisville, Kentucky, United States
University of Michigan Health System
Ann Arbor, Michigan, United States
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