Overview
Sponsor-declared trial summary
Hidradenitis Suppurativa
1. To evaluate the efficacy of tulisokibart compared with placebo as assessed by the proportion of participants achieving HiSCR50 at Week 16
Key facts
- Sponsor
- Merck Sharp & Dohme LLC
- Participant type
- Patients
- Age range
- 18-64 years, 65+ years
- Gender
- Male and Female
- Therapeutic area
- Diseases [C] - Skin and Connective Tissue Diseases [C17]
- Trial duration
- 11 Aug 2025 → ongoing
- Decision date (initial)
- 2025-08-04
- Transition trial
- No
- Low-intervention
- No
- Rare-disease indication
- No
- Vulnerable population
- No
- Funding sources
- Merck Sharp & Dohme LLC
External identifiers
- EU CT number
- 2024-520039-33-00
- WHO UTN
- U1111-1316-5263
Trial design
CTIS Part I — objectives, methods, condition coding
Main objective
Scope: Pharmacogenetic, Pharmacodynamic, Pharmacogenomic, Safety, Therapy, Efficacy, Pharmacokinetic
1. To evaluate the efficacy of tulisokibart compared with placebo as assessed by the proportion of participants achieving HiSCR50 at Week 16
Secondary objectives 3
- To evaluate the efficacy of tulisokibart compared with placebo as assessed by the proportion of participants achieving HiSCR75 at Week 16
- To evaluate the efficacy of tulisokibart compared with placebo as assessed by mean change from baseline in the DLQI at Week 16
- To evaluate the safety and tolerability of tulisokibart
Conditions and MedDRA coding
Hidradenitis Suppurativa
| Version | Level | Code | Term | System organ class |
|---|---|---|---|---|
| 27.1 | LLT | 10020041 | Hidradenitis suppurativa | 10040785 |
Regulatory references
- Plan to share IPD
- Yes
| EU CT number | Title | Sponsor |
|---|---|---|
| 2023-508636-61-00 | A Phase 3, Randomized, Double-Blind, Placebo-Controlled Program to Evaluate the Efficacy and Safety of Tulisokibart in Participants with Moderately to Severely Active Crohn’s Disease | Merck Sharp & Dohme LLC |
Eligibility criteria
Principal inclusion / exclusion criteria as submitted by sponsor
Inclusion criteria 4
- Has signs and symptoms of hidradenitis suppurativa (HS) for ≥ 6 months prior to Screening and a clinical diagnosis of HS at Screening
- Has moderate or severe HS defined as a total combined number of ≥ 5 abscesses and/or inflammatory nodules, with HS lesions present in ≥ 2 distinct anatomical areas and ≥ 1 anatomic area of HS involvement characterized as Hurley Stage II or III
- Has a history of inadequate response to a course of systemic antibiotics for treatment of HS or intolerance to systemic antibiotics for treatment of HS
- Has ≤20 draining tunnel count at Screening and Randomization
Exclusion criteria 13
- Has other active skin conditions that may, in the judgment of the investigator, interfere with the assessment of HS
- Has any immune-mediated inflammatory condition that is not well controlled and which may potentially require biologic therapy
- Has a transplanted organ and requires continued systemic immunosuppression
- Has a history of cancer (except fully treated nonmelanoma skin cancers or cervical carcinoma in situ after complete surgical removal) and is disease free for <5 years
- Has had a diagnostic evaluation suggestive of malignancy (eg, chest or breast imaging) and the possibility of malignancy cannot be reasonably excluded following additional clinical assessments
- Has a known infection with hepatitis B virus (HBV), hepatitis C virus (HCV), or human immunodeficiency virus (HIV)
- Has any active infection
- Has active tuberculosis
- Has had major surgery within the past 3 months or has a major surgery planned during the study
- Has a history of clinically significant drug or alcohol abuse within the past 6 months
- Has prior exposure to tulisokibart
- Has undergone laser therapy or surgical procedures for their lesions within the past 6 weeks or is planning to have laser therapy or surgical procedures for lesions during participation in the study
- Has known allergies, hypersensitivity, or intolerance to tulisokibart or its excipients
Endpoints
Primary and secondary outcome measures (English text)
Primary endpoints 1
- Percentage of Participants Achieving Hidradenitis Suppurativa Clinical Response (HiSCR)50 at Week 16
Secondary endpoints 4
- Percentage of Participants Achieving HiSCR75 at Week 16
- Mean Change from Baseline in Dermatology Life Quality Index (DLQI) at Week 16
- Percentage of Participants Who Experience One or More Adverse Events (AEs)
- Percentage of Participants Who Discontinue Study Intervention Due to an AE
Investigational products
Investigational medicinal products (IMPs), comparators, placebo, auxiliary
Test 1
PRD10740873 · Product
- Active substance
- Tulisokibart
- Pharmaceutical form
- SOLUTION FOR INJECTION IN PRE-FILLED INJECTOR
- Route of administration
- SUBCUTANEOUS USE
- Max daily dose
- 0 % (V/V) percent volume/volume
- Max total dose
- 0 % (V/V) percent volume/volume
- Max treatment duration
- 116 Week(s)
- Authorisation status
- Not Authorised
- MA holder
- MERCK & CO. INC.
- Paediatric formulation
- No
- Orphan designation
- No
Placebo 1
N/A · Product
- Other product name
- N/A
- Pharmaceutical form
- N/A
- ATC code
- N/A — N/A
- Marketing authorisation
- N/A
- MA holder
- N/A
- MA country
- Iceland
- Paediatric formulation
- No
Sponsors and contacts
Sponsor organisations, regulatory contacts, third parties
Merck Sharp & Dohme LLC
- Sponsor organisation
- Merck Sharp & Dohme LLC
- Address
- 126 East Lincoln Avenue, P. O. Box 2000 P. O. Box 2000
- City
- Rahway
- Postcode
- 07065-4607
- Country
- United States
Scientific contact point
- Organisation
- Merck Sharp & Dohme LLC
- Contact name
- Aileen Dualan
Public contact point
- Organisation
- Merck Sharp & Dohme LLC
- Contact name
- Aileen Dualan
Third parties 12
| Organisation | City, country | Duties |
|---|---|---|
| Medidata Solutions Inc. ORG-100016256
|
New York, United States | E-data capture |
| Syneos Health Clinique Inc. ORG-100028348
|
Quebec, Canada | Laboratory analysis |
| QPS LLC ORG-100012847
|
Newark, United States | Laboratory analysis |
| Labcorp Early Development Laboratories Inc. ORG-100012865
|
Greenfield, United States | Laboratory analysis |
| Signant Health Global Solutions Limited ORG-100047290
|
Dublin 2, Ireland | Interactive response technologies (IRT) |
| Q2 Solutions LLC ORG-100017000
|
Ithaca, United States | Laboratory analysis |
| Bioagilytix Labs LLC ORG-100013030
|
Durham, United States | Laboratory analysis |
| Parexel International Corp. ORG-100007310
|
Auburndale, United States | Other |
| Iqvia Laboratories Limited ORG-100042527
|
Livingston, United Kingdom | Laboratory analysis |
| Almac Diagnostic Services Limited ORG-100040447
|
Craigavon, United Kingdom (Northern Ireland) | Laboratory analysis |
| Pharmaceutical Product Development LLC ORG-100016999
|
Highland Heights, United States | Laboratory analysis |
| Infinity Biologix LLC ORG-100040369
|
Piscataway, United States | Laboratory analysis |
Locations
5 EU/EEA countries · 13 investigational sites
By country
| Country | MS status | Planned subjects | Sites |
|---|---|---|---|
| France | Ongoing, recruitment ended | 12 | 4 |
| Germany | Ongoing, recruitment ended | 12 | 2 |
| Italy | Ongoing, recruitment ended | 10 | 1 |
| Netherlands | Ongoing, recruitment ended | 4 | 2 |
| Spain | Ongoing, recruitment ended | 8 | 4 |
| Rest of world
Australia, Turkey, Argentina, Chile, China, Singapore, United Kingdom, Canada, Colombia, Japan, United States
|
— | 162 | — |
Investigational sites
Country notifications
Trial-start, recruitment-start, end and early-termination notifications submitted per Member State
| Country | Trial start | Trial end | Recruitment start | Recruitment end | Early termination |
|---|---|---|---|---|---|
| France | 2025-08-19 | 2025-08-29 | 2025-12-09 | ||
| Germany | 2025-09-23 | 2025-10-22 | 2025-12-09 | ||
| Italy | 2025-09-11 | 2025-10-08 | 2025-12-09 | ||
| Netherlands | 2025-09-03 | 2025-09-22 | 2025-12-09 | ||
| Spain | 2025-08-11 | 2025-10-13 | 2025-12-09 |
Results and documents
Annex IV summary of results, Annex V layperson summary, and all documents registered in CTIS for this trial
Documents 61 files
Public protocol annexes, IB summaries, regulatory submissions and post-authorisation documents registered in CTIS.
| Type | Title | Version |
|---|---|---|
| Protocol (for publication) | D1_Protocol_2024-520039-33-00_SM03_for pub | 3R |
| Protocol (for publication) | D4_Copyright statement_IN_for pub | 04DEC2024 |
| Recruitment arrangements (for publication) | K1_Recruitment Arrangements and IC Procedure_DEU_EN_IN_for pub | 1.0 |
| Recruitment arrangements (for publication) | K1_Recruitment Arrangements and IC Procedure_ESP_ES_IN-RFI002_for pub | 29MAY2025 |
| Recruitment arrangements (for publication) | K1_Recruitment Arrangements and IC Procedure_ITA_EN_IN_for pub | 19MAR2025 |
| Recruitment arrangements (for publication) | K1_Recruitment Arrangements_FRA_FR_IN_for pub | 27MAR2025R |
| Recruitment arrangements (for publication) | K2_Recruitment Doc Material Description_ESP_ES_IN_for pub | 17MAR2025R |
| Recruitment arrangements (for publication) | K2_Recruitment Doc Patient Brochure_DEU_DE_SM02_for pub | v1 |
| Recruitment arrangements (for publication) | K2_Recruitment Doc Patient Brochure_ESP_ES_IN-RFI002_for pub | 1 |
| Recruitment arrangements (for publication) | K2_Recruitment Doc Patient Brochure_FRA_FR_IN-RFI004_for pub | 1R |
| Recruitment arrangements (for publication) | K2_Recruitment Doc Patient Flyer_DEU_DE_SM02_for pub | v1 |
| Recruitment arrangements (for publication) | K2_Recruitment Doc Patient Flyer_ESP_ES_IN-RFI002_for pub | 1 |
| Recruitment arrangements (for publication) | K2_Recruitment Doc Patient Flyer_FRA_FR_IN-RFI004_for pub | 1 |
| Recruitment arrangements (for publication) | K2_Recruitment Doc Patient Flyer_ITA_IT_IN-RFI005_for pub | 1 |
| Recruitment arrangements (for publication) | K2_Recruitment Doc Patient Letter_ESP_ES_IN-RFI002_for pub | 1 |
| Recruitment arrangements (for publication) | K2_Recruitment Doc Poster_DEU_DE_SM02_for pub | v1 |
| Recruitment arrangements (for publication) | K2_Recruitment Doc Poster_ESP_ES_IN-RFI002_for pub | 1 |
| Recruitment arrangements (for publication) | K2_Recruitment Doc Poster_FRA_FR_IN-RFI004_for pub | 1 |
| Recruitment arrangements (for publication) | K2_Recruitment Doc Poster_ITA_IT_IN-RFI005_for pub | 1 |
| Recruitment arrangements (for publication) | K2_Recruitment Doc Study Fact Sheet_DEU_DE_SM02_for pub | v1 |
| Recruitment arrangements (for publication) | Please refer to "Response to RFI_2024-520039-33_NLD_NL_IN-RFI007_not pub | 2.0 |
| Subject information and informed consent form (for publication) | 1_ICF_Optional_biopsy_ESP_ES_SM03_for pub | 01 |
| Subject information and informed consent form (for publication) | L1_ICF_Associated_person data privacy_ITA_IT_IN_for pub | 21MAR2025 |
| Subject information and informed consent form (for publication) | L1_ICF_FBR consent_DEU_DE_IN_for pub | 0.00 |
| Subject information and informed consent form (for publication) | L1_ICF_FBR consent_ESP_ES_IN-RFI002_for pub | 00 |
| Subject information and informed consent form (for publication) | L1_ICF_FBR consent_FRA_FR_SM03_for pub | 01R |
| Subject information and informed consent form (for publication) | L1_ICF_FBR consent_NLD_NL_IN-RFI007_for pub | v0.00 |
| Subject information and informed consent form (for publication) | L1_ICF_Main addendum_FRA_FR_SM03_for pub | AM01v1.00 |
| Subject information and informed consent form (for publication) | L1_ICF_Main consent_DEU_DE_SM03_for pub | 0.01R |
| Subject information and informed consent form (for publication) | L1_ICF_Main consent_ESP_ES_SM03_for pub | 01R |
| Subject information and informed consent form (for publication) | L1_ICF_Main consent_FRA_FR_SM03_for pub | AM01v1.00R |
| Subject information and informed consent form (for publication) | L1_ICF_Main consent_ITA_IT_SM03_for pub | 01 |
| Subject information and informed consent form (for publication) | L1_ICF_Main consent_NLD_NL_SM03-RFI002_for pub | v0-01 |
| Subject information and informed consent form (for publication) | L1_ICF_Main data privacy_ITA_IT_IN_for pub | 21MAR2025 |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_add crossborder_DEU_DE_IN_for pub | 0.00R |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_associated person_ESP_ES_IN_for pub | 00R |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_biopsy_FRA_FR_SM03_for pub | 01R |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_blood sample_DEU_DE_IN_for pub | 0.00R |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_blood sample_ESP_ES_IN_for pub | 00 |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_blood sample_FRA_FR_SM03_for pub | 01R |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_blood sample_ITA_IT_IN_for pub | 00 |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_data privacy EXT_ITA_IT_IN_for pub | 21MAR2025 |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_DILI sample_ITA_IT_IN_for pub | 21MAR2025 |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_extension period_DEU_DE_IN_for pub | 0.00 |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_extension period_ESP_ES_IN_for pub | 00 |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_extension period_FRA_FR_SM03_for pub | 01R |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_extension period_ITA_IT_IN_for pub | 00 |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_extension_NLD_NL_IN-RFI007_for pub | v0.00 |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_pregnancy follow-up_ESP_ES_IN_for pub | 00 |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_pregnant partner data privacy_ITA_IT_IN-RFI005_for pub | 23JUN2025 |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_pregnant partner_ITA_IT_IN-RFI005_for pub | 123JUN2025 |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_sample data privacy blood_ITA_IT_IN_for pub | 21MAR2025 |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_sample data privacy skin_ITA_IT_IN_for pub | 21MAR2025 |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_tissue sample_DEU_DE_IN_for pub | 0.00R |
| Subject information and informed consent form (for publication) | L1_ICF_Optional_tissue sample_ITA_IT_SM03_for pub | 01 |
| Synopsis of the protocol (for publication) | D1_PPLS_2024-520039-33 _IN_for pub | 1.0 |
| Synopsis of the protocol (for publication) | D1_PPLS_2024-520039-33_DEU_DE_IN_for pub | 1.0 |
| Synopsis of the protocol (for publication) | D1_PPLS_2024-520039-33_ESP_ES_IN_for pub | 1.0 |
| Synopsis of the protocol (for publication) | D1_PPLS_2024-520039-33_FRA_FR_IN_for pub | 1.0 |
| Synopsis of the protocol (for publication) | D1_PPLS_2024-520039-33_ITA_IT_IN_for pub | 1.0 |
| Synopsis of the protocol (for publication) | D1_PPLS_2024-520039-33_NLD_NL_IN_for pub | 1.0 |
Application history
5 submissions — initial application plus substantial / non-substantial modifications
| # | Type | Code | Submitted | Reference MS | Conclusion | Decision date |
|---|---|---|---|---|---|---|
| 1 | INITIAL | IN | 2025-04-08 | Germany | Acceptable 2025-08-04
|
2025-08-04 |
| 2 | SUBSTANTIAL MODIFICATION | SM-1 | 2025-08-07 | Acceptable | 2025-08-29 | |
| 3 | SUBSTANTIAL MODIFICATION | SM-2 | 2025-09-03 | Germany | Acceptable | 2025-10-14 |
| 4 | NON SUBSTANTIAL MODIFICATION | NSM-1 | 2025-10-14 | Germany | Acceptable | 2025-10-14 |
| 5 | SUBSTANTIAL MODIFICATION | SM-3 | 2025-12-03 | Germany | Acceptable 2026-02-16
|
2026-02-16 |