An Extension Study to Assess Safety and Efficacy of Remibrutinib in Participants With Moderate to Severe HS

July 14, 2026 updated by: Novartis Pharmaceuticals

A Double-blind, Double-dummy, Parallel Group, Multicenter Phase 3 Extension Study Evaluating the Long-term Safety and Efficacy of 2 Doses of Remibrutinib in Adult Participants With Moderate to Severe Hidradenitis Suppurativa

The purpose of this study is to evaluate the long-term safety, tolerability and efficacy of remibrutinib (LOU064) in adult participants with moderate to severe hidradenitis suppurativa (HS) who have completed either of the preceding Phase 3 studies, CLOU064J12301 or CLOU064J12302.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This is a global Phase 3, multicentre, double-blind, double-dummy, parallel-group extension study. It fulfils the Novartis commitment to provide post-trial access.

The study includes a double-blind and an open-label treatment phase:

Double-blind, double-dummy treatment continues from Week 68 (end of core study) until final database lock (DBL) of both core studies or until up titration. Participants remain on the same blinded regimen they were on during Treatment Period 2 of the preceding Phase 3 studies.

After final DBL of both core studies, treatment transitions to open-label.

Participants will continue treatment until commercial availability and reimbursement in their country, another access mechanism is available, or 4 years of extension treatment is completed.

Participants who discontinue treatment early or do not transition to commercial remibrutinib will enter a 4-week treatment-free safety follow-up.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
710

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

  • Name: Novartis Pharmaceuticals
  • Phone Number: +41613241111

Study Locations

  • Argentina
      • CABA, Argentina, C1428DZF
        • Recruiting
        • Novartis Investigative Site
    • Buenos Aires
      • Caba, Buenos Aires, Argentina, C1119ACN
        • Recruiting
        • Novartis Investigative Site
  • Australia
    • New South Wales
      • Sydney, New South Wales, Australia, 2010
        • Recruiting
        • Novartis Investigative Site
    • Victoria
      • Melbourne, Victoria, Australia, 3004
        • Recruiting
        • Novartis Investigative Site

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Key Inclusion Criteria:

  • Signed informed consent must be obtained before any assessment is performed.
  • Participant has completed the full study treatment period according to the protocol (68 weeks) in the core studies (CLOU064J12301 or CLOU064J12302).
  • Participant does not meet any treatment discontinuation criteria of the core study at Week 68.

Key Exclusion Criteria:

  • Ongoing or planned use of prohibited HS or non-HS treatments.
  • Participants not expected to benefit from participation in the extension study or participants expected to be exposed to an undue safety risk if participating in the extension study, as assessed by the Investigator.
  • Current severe progressive or uncontrolled disease, which in the judgment of the Investigator renders the participant unsuitable for the study.

Other protocol-defined inclusion/exclusion criteria may apply.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Remibrutinib Dose A
Participants randomized during the core study to receive remibrutinib Dose A
Drug: Remibrutinib
Remibrutinib Dose A and B (oral)
Other Names:
  • LOU064
Experimental: Remibrutinib Dose B
Participants randomized during the core study to receive remibrutinib Dose B
Drug: Remibrutinib
Remibrutinib Dose A and B (oral)
Other Names:
  • LOU064

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Incidence and severity of Adverse Events (AEs) and Serious Adverse Events (SAEs)
Time Frame: Baseline, up to Week 280
Evaluate the safety of long-term treatment with remibrutinib in adult participants with moderate to severe Hidradenitis Suppurativa.
Baseline, up to Week 280

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Proportion of participants with AN50/75/90 response
Time Frame: Baseline, up to Week 276
Achievement of AN50/75/90 is defined as at least a 50/75/90 (respectively)% decrease in Abscess and Inflammatory Nodule (AN) count compared to baseline.
Baseline, up to Week 276
Mean Percentage change from baseline in International Hidradenitis Suppurativa severity score system (IHS4)
Time Frame: Baseline, up to Week 276
The IHS4 is a disease severity score calculated as a weighted sum of inflammatory lesion counts: nodules (×1), abscesses (×2), and draining tunnels (×4). Scores are categorised as mild (≤3), moderate (4-10), and severe (≥11). Higher scores indicate greater disease severity (worse outcome).
Baseline, up to Week 276
Proportion of participants with Hidradenitis suppurativa clinical response (HiSCR)50/75/90 response
Time Frame: Baseline, up to Week 276
Achievement of HiSCR50/75/90 is defined as at least a 50/75/90 (respectively)% decrease in AN count with no increase in the number of abscesses and in the number of draining tunnels/fistulae compared to baseline.
Baseline, up to Week 276
Proportion of participants with clinical response in HS-related skin pain (numerical rating scale [NRS] 30), at worst
Time Frame: Baseline, up to Week 276
Achievement of NRS30 among participants with baseline NRS ≥ 3 (in the core studies CLOU064J12301 and CLOU064J12302). NRS30 is defined as at least a 30% reduction and at least 2-unit reduction from baseline in Patient's Global Assessment of Skin Pain - at worst over the past 7 days.
Baseline, up to Week 276

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Novartis Pharmaceuticals

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 10, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 27, 2031

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 27, 2031

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 18, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 18, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 24, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
July 15, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 14, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • CLOU064J12303B

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Novartis is committed to sharing with qualified external researchers, access to patient-level data and supporting clinical documents from eligible studies. These requests are reviewed and approved by an independent review panel on the basis of scientific merit. All data provided is anonymized to respect the privacy of patients who have participated in the trial in line with applicable laws and regulations. This trial data availability is according to the criteria and process described on www.clinicalstudydatarequest.com.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Hidradenitis Suppurativa

Clinical Trials on Remibrutinib

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings