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An Extension Study of Long-term Efficacy, Safety and Tolerability of Remibrutinib in Chronic Spontaneous Urticaria Patients Who Completed Preceding Studies With Remibrutinib

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Novartis

Status and phase

Enrolling
Phase 3

Conditions

Chronic Spontaneous Urticaria

Treatments

Drug: LOU064 (blinded)
Drug: LOU064 (open label)
Drug: Placebo

Study type

Interventional

Funder types

Industry

Identifiers

NCT05513001
CLOU064A2303B
2022-001034-11 (EudraCT Number)

Details and patient eligibility

About

The purpose of this extension study is to collect long-term efficacy, safety and tolerability data on remibrutinib in a selected group of participants with Chronic Spontaneous Urticaria (CSU) who previously completed the treatment phase of remibrutinib preceding Phase 3 studies.

This study will also fulfill the Novartis commitment to provide post-trial access to participants who have completed the preceding Phase 3 studies, where applicable.

Full description

This is a global, multicenter, randomized, double-blind, placebo-controlled, randomized withdrawal Phase 3b extension study, followed by long-term open label treatment cycles to assess the efficacy, safety and tolerability of remibrutinib in adult participants with CSU inadequately controlled by H1-AH. The study comprises 2 Epochs. Epoch 1 is the initial study period for participants who completed preceding remibrutinib Phase 3 studies. Epoch 1 comprises of a 24-week randomized withdrawal period with remibrutinib or placebo for patients with UAS7<16 OR a 24 week Open-label treatment period with remibrutinib for patients with UAS7≥16.

Participants will be randomized in a 1:1 ratio to enter the double-blind placebo-controlled 24-week withdrawal phase. In case of relapse (UAS7≥16) in the blinded group, participants enter the (Re-)treatment period Epoch 1 and receive 24 weeks of Open-label treatment with remibrutinib. At the end of the (Re-)treatment period Epoch 1, participants will move to Epoch 2.

Epoch 2 is the second subsequent study period and consists of 24-week cycles that could either encompass treatment-free Observation and/or Open-label (Re-)treatment periods with remibrutinib, with or without background H1-AH.

In case of relapse (UAS7≥16) during an Observation period, participants enter the next (Re-)treatment period and receive 24 weeks of treatment with remibrutinib. Participants completing an Observation period 2/3/4/5 with a UAS7≤6 will complete the study. Participants with a UAS7 >6 -<16 can enter the next (Re-)treatment period if continuous treatment is considered necessary and beneficial for the individual participant. For participants with a UAS7<16 that enter the next (Re-)treatment period, remibrutinib monotherapy treatment (without background H1-AH) is required.

Enrollment

1,021 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Written informed consent must be obtained before any assessment is performed.
  • Male and female, adult participants ≥18 years of age.
  • Participants who successfully completed the preceding core studies CLOU064A2301, CLOU064A2302, CLOU064A1301, CLOU064A2304 or CLOU064A2305 according to the respective protocols.
  • Willing and able to adhere to the study protocol and visit schedule.

Exclusion criteria

  • Significant bleeding risk or coagulation disorders.
  • History of gastrointestinal bleeding.
  • Requirement for anti-platelet medication.
  • Requirement for anticoagulant medication.
  • History or current hepatic disease.
  • Evidence of clinically significant cardiovascular, neurological, psychiatric, pulmonary, renal, hepatic, endocrine, metabolic, hematological disorders, gastrointestinal disease or immunodeficiency that, in the investigator's opinion, would compromise the safety of the participant, interfere with the interpretation of the study results or otherwise preclude participation or protocol adherence of the participant.

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Quadruple Blind

1,021 participants in 3 patient groups, including a placebo group

Arm 1: LOU064 (blinded)
Experimental group
Description:
LOU064 (blinded) taken orally for 24 weeks, followed by cycles of either LOU064 (open-label) taken orally for a maximum of 5 cycles of 24 weeks each OR treatment-free observation cycles. Randomized in a 1:1 ratio (arm 1:arm 2)
Treatment:
Drug: LOU064 (open label)
Drug: LOU064 (blinded)
Arm 2: LOU064 Placebo (blinded)
Placebo Comparator group
Description:
LOU064 placebo (blinded) taken orally for 24 weeks, followed by cycles of either LOU064 (open-label) taken orally for a maximum of 5 cycles of 24 weeks each OR treatment-free observation cycles. Randomized in a 1:1 ratio (arm 1:arm 2)
Treatment:
Drug: Placebo
Drug: LOU064 (open label)
Arm 3: LOU064 (Open Label)
Experimental group
Description:
LOU064 (open-label) taken orally for 24 weeks per treatment cycle (Arm 3)
Treatment:
Drug: LOU064 (open label)

Trial contacts and locations

213

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Central trial contact

Novartis Pharmaceuticals; Novartis Pharmaceuticals

Data sourced from clinicaltrials.gov

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