A Safety and Efficacy Study of Remibrutinib in the Treatment of CSU in Japanese Adults Inadequately Controlled by H1-antihistamines

A Multicenter, Open-label Phase 3 Study of Remibrutinib (LOU064) to Investigate the Safety, Tolerability and Efficacy for 52 Weeks in Adult Japanese Chronic Spontaneous Urticaria Patients Inadequately Controlled by H1-antihistamines

ClinicalTrials.gov Identifier: NCT05048342

Novartis Reference Number: CLOU064A1301

Last Update: Feb 22, 2022

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All compounds are either investigational or being studied for (a) new use(s). Efficacy and safety have not been established. There is no guarantee that they will become commercially available for the use(s) under investigation. 

Study Description

The purpose of this study is to evaluate the safety and efficacy of remibrutinib (LOU064) in adult Japanese chronic spontaneous urticaria (CSU) participants inadequately controlled by second generation H1-antihistamines.

Chronic Spontaneous Urticaria
Phase 3
Overall status 
Start date 
Jan 15, 2022
Completion date 
Jan 09, 2024
18 Years and older (Adult, Older Adult)


Arm 1: LOU064 (open label)

Eligibility Criteria

Inclusion Criteria:

Signed informed consent must be obtained prior to participation in the study.
Male and female participants ≥18 years of age.
CSU duration for ≥ 6 months prior to screening (defined as the onset of CSU determined by the investigator based on all available supporting documentation).

Diagnosis of CSU inadequately controlled by second generation H1-antihistamines at baseline defined as:

The presence of itch and hives for ≥ 6 consecutive weeks prior to screening despite the use of second generation H1-antihistamines during this time period
UAS7 score (range 0-42) ≥ 16, ISS7 score (range 0-21) ≥ 6 and HSS7 score (range 0-21) ≥ 6 during the 7 days prior to baseline (Day 1)
Documentation of hives within three months before baseline (either at screening and/or at baseline; or documented in the participants' medical history).
Willing and able to complete an Urticaria Patient Daily Diary (UPDD) for the duration of the study and adhere to the study protocol
Participants must not have had more than one missing UPDD entry (either morning or evening) in the 7 days prior to baseline (Day 1).

Exclusion Criteria:

Participants having a clearly defined predominant or sole trigger of their chronic urticaria (chronic inducible urticaria) including urticaria factitia (symptomatic dermographism), cold-, heat-, solar-, pressure-, delayed pressure-, aquagenic-, cholinergic-, or contact-urticaria
Other diseases with symptoms of urticaria or angioedema, including but not limited to urticaria vasculitis, urticaria pigmentosa, erythema multiforme, mastocytosis, hereditary urticaria, or drug-induced urticaria
Any other skin disease associated with chronic itching that might influence in the investigator's opinion the study evaluations and results, e.g., atopic dermatitis, bullous pemphigoid, dermatitis herpetiformis, senile pruritus or psoriasis
Evidence of clinically significant cardiovascular (such as but not limited to myocardial infarction, unstable ischemic heart disease, New York heart association (NYHA) Class III/IV left ventricular failure, arrhythmia and uncontrolled hypertension within 12 months prior to Visit 1), 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
Significant bleeding risk or coagulation disorders
History of gastrointestinal bleeding, e.g., in association with use of nonsteroidal anti- nflammatory drugs (NSAID), that was clinically relevant (e.g., requiring hospitalization or blood transfusion)
Requirement for anti-platelet medication, except for acetylsalicylic acid up to 100 mg/d or clopidogrel. The use of dual anti-platelet therapy (e.g., acetylsalicylic acid + clopidogrel) is prohibited.
Requirement for anticoagulant medication (for example, warfarin or Novel Oral Anti-Coagulants (NOAC))
History or current hepatic disease including but not limited to acute or chronic hepatitis, cirrhosis or hepatic failure or Aspartate Aminotransferase (AST)/ Alanine Aminotransferase (ALT) levels of more than 1.5 x upper limit of normal (ULN) or International Normalized Ratio (INR) of more than 1.5 at screening

Study Locations

Novartis Investigative Site
Urayasu, 279-0011
Novartis Investigative Site
Izumiotsu, 595-0025
Novartis Investigative Site
Neyagawa, 572-0838
Novartis Investigative Site
Takatsuki, 569-0824
Novartis Investigative Site
Izumo-city, 693 8501
Novartis Investigative Site
Itabashi-ku, 173-8610


Novartis Pharmaceuticals

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