E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Chronic spontaneous urticaria (CSU) |
|
E.1.1.1 | Medical condition in easily understood language |
Chronic spontaneous urticaria is a distressing skin condition that causes red, swollen, itchy and sometimes painful hives or “wheals” |
|
E.1.1.2 | Therapeutic area | Diseases [C] - Skin and Connective Tissue Diseases [C17] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10072757 |
E.1.2 | Term | Chronic spontaneous urticaria |
E.1.2 | System Organ Class | 10040785 - Skin and subcutaneous tissue disorders |
|
E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To evaluate the efficacy of fenebrutinib compared with placebo in patients with CSU who are refractory to anti-histamines |
|
E.2.2 | Secondary objectives of the trial |
•To evaluate the safety of fenebrutinib compared with placebo •To characterize the pharmacokinetics (PK) of fenebrutinib in CSU patients |
|
E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
- Aged 18−75 years, inclusive - Diagnosis of CSU refractory to H1 antihistamines at the time of randomization, as defined by all of the following: •The presence of itch and hives for > 6 consecutive weeks at any time prior to enrollment despite current use of H1 antihistamines •Urticaria Activity Score over 7 days (UAS7 score)>=16 during the 7 days prior to randomization (Day 1) •Patients must have been on daily stable doses of H1 antihistamines, consistent with standard-of-care therapy for CSU, starting at least 3 consecutive days immediately prior to the screening visit through Day 1 and must document current use on all visits. •CSU diagnosis for >= 6 months -Willing and able to complete an Urticaria Patient Daily eDiary for the duration of the study - Completion of 7 days of the Urticaria Patient Daily eDiary entries in the 7 days prior to randomization - No evidence of active or latent or inadequately treated infection with tuberculosis (TB) - Only for patients currently receiving proton-pump inhibitors or H2 receptor antagonists: Treatment must be at a stable dose during the 2-week screening period prior to randomization and with a plan to remain at a stable dose for the duration of the study -For women of childbearing potential: Agreement to remain abstinent or use contraceptive methods that result in a failure rate of < 1% per year during the treatment period and for at least 4 weeks after the last dose of study drug. Women must refrain from donating eggs during this same period. -For men: agreement to remain abstinent or use contraceptive measures and agreement to refrain from donating sperm for at least 4 weeks after the last dose of study treatment
|
|
E.4 | Principal exclusion criteria |
-Treatment with omalizumab or other monoclonal antibody therapies used to treat CSU within 4 months prior to screening or primary nonresponse to omalizumab -Use of a non-biologic investigational drug or participation in an investigational study with a non-biologic drug within 30 days prior to study drug administration on Day 1 -Use of a biologic investigational therapy or participation in an investigational study involving biologic therapy within 90 days or 5 half-lives, whichever is greater, prior to study drug administration on Day 1 -Previous treatment with fenebrutinib or other Bruton’s tyrosine kinase inhibitors -Patients whose urticaria is solely due to physical urticaria -Other diseases with symptoms of urticaria or angioedema, including urticarial vasculitis, urticarial pigmentosa, erythema multiforme, mastocytosis, hereditary or acquired angioedema, lymphoma, or leukemia -Atopic dermatitis, bullous pemphigoid, dermatitis herpetiformis, or other skin disease associated with itch such as psoriasis -Routine doses of the following medications within 30 days prior to screening: systemic or cutaneous corticosteroids (prescription or over the counter), hydroxychloroquine, methotrexate, cyclosporine, or cyclophosphamide -Prior utilization of intravenous steroids for treatment of laryngeal angioedema -Intravenous immunoglobulin G or plasmapheresis within 30 days prior to screening -History of anaphylactic shock without clearly identifiable avoidable antigen -Hypersensitivity to fenebrutinib or any component of the formulation -Require any prohibited concomitant medications -History of live attenuated vaccine within 6 weeks prior to randomization or requirement to receive these vaccinations at any time during study drug treatment -Evidence of clinically significant cardiac, neurologic, psychiatric, pulmonary, renal, hepatic, endocrine, metabolic, or gastrointestinal (GI) disease -Uncontrolled disease states, such as asthma, psoriasis, or inflammatory bowel disease, where flares are commonly treated with oral or parenteral corticosteroids -History of vasculitis and opportunistic infections -Current liver disease and any known active infection -History of recurrent bacterial, viral, mycobacterial or fungal infections and any opportunistic infections, with the exception of recurrent oral or genital herpes or uncomplicated urinary tract infections in females -Any major episode of infection requiring hospitalization or treatment with IV antimicrobials within 8 weeks prior to and during screening or treatment with oral antimicrobials within 2 weeks prior to and during screening -Known history of HIV infection -Evidence of chronic and/or active hepatitis B or C -History of cancer, including hematologic malignancy and solid tumors, within 10 years before screening -Need for systemic anti-coagulation with warfarin, other oral or injectable anti-coagulants, or anti-platelet agents other than non-steroidal anti-inflammatory drug, aspirin, and other salicylates -History of non-gallstone−related pancreatitis or chronic pancreatitis and hospitalizations or transfusion for a GI bleed -History of cerebrovascular accident (CVA), spontaneous intracranial hemorrhage or history of traumatic intracranial hemorrhage within 10 years or any history of hemorrhagic CVA -Known bleeding diathesis -Screening 12-lead electrocardiogram that demonstrates clinically relevant abnormalities -History of ventricular dysrhythmias or risk factors for ventricular dysrhythmias -Any uncontrolled clinically significant laboratory abnormality -Current treatment with astemizole, terfenadine, and/or ebastine
|
|
E.5 End points |
E.5.1 | Primary end point(s) |
1.Change from baseline in the UAS7 at Day 57 (Week 8) |
|
E.5.1.1 | Timepoint(s) of evaluation of this end point |
1.Baseline and Day 57 (Week 8) |
|
E.5.2 | Secondary end point(s) |
1.Proportion of patients who are well controlled (UAS7 <= 6) at Day 57 2.Change from baseline in the UAS7 at Day 29 (Week 4) 3.The nature, frequency, timing, and severity of adverse events 4.Change from baseline in targeted vital signs, physical examination findings, ECGs, and clinical laboratory results following fenebrutinib administration 5. Plasma concentrations of fenebrutinib at specified timepoints
|
|
E.5.2.1 | Timepoint(s) of evaluation of this end point |
1.Day 57 (Week 8) 2.Baseline and Day 29 (Week 4) 3.Up to 14 weeks 4.From Baseline to 14 weeks 5-10.Day 1 (Week 0), Day 8 (Week 1), Day 57 (Week 8) or at early termination
|
|
E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
|
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 6 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 12 |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 16 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Canada |
Germany |
Poland |
United States |
|
E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
|
The end of this study is defined as the date when all patients have completed the study completion visit or early termination visit or have otherwise been discontinued from the study. |
|
E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 0 |
E.8.9.1 | In the Member State concerned months | 6 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 1 |
E.8.9.2 | In all countries concerned by the trial months | 8 |
E.8.9.2 | In all countries concerned by the trial days | 5 |