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September 20, 2021

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A Double-Blind, Placebo-Controlled, Parallel-Group Study to Assess the Efficacy, Safety, and Tolerability of CAT-354


  1. StudyEvent: Eligibility
    1. Eligibility
Inclusion Criteria
age 18 Years to 80 Years
Informed consent
Female infertility or Contraceptive methods
partner using condom and subject using spermicide, diaphragm, intra-uterine device or contraceptive sponge) for 1 month prior to Visit 1 (screening visit) or longer if requested by the investigator. Women of childbearing potential must continue to practice birth control during the study and for at least 2 months after completing the study. Women of childbearing potential must have a negative pregnancy test at screening and Visit 2, 5, 7 and 9.
Uncontrolled (refractory) asthma despite optimal treatment
subjects will have Global Initiative for Asthma (GINA 2006) clinical features of uncontrolled asthma despite treatment with a minimum dose of 800 g beclomethasone dipropionate or equivalent inhaled corticosteroid per day plus one or more additional controller i.e. long-acting b-agonist, leukotriene antagonist or theophylline. Oral corticosteroids (not parenteral) as additional treatment at any dose are acceptable. The dose of inhaled and oral corticosteroids must have been stable within 4 weeks preceding Visit 1 (screening visit) and will be expected to remain stable for the duration of the study. If subjects are on single inhaler combination products at Visit 1 (e.g. fluticasone/salmeterol - Advair/Seretide or Symbicort (budesonide/formoterol) SMART) they must receive the two components as two separate inhaler medications for the purpose of the trial. This will facilitate withholding the long-acting b-agonist component before lung function and challenge testing (see Section 9.5.7). The GINA 2006 [14] levels of asthma control and treatment are described in Appendix 3.
A forced expiratory volume in 1 second (FEV1) acceptable for AHR challenge tests (>= 60% of predicted normal) on the challenge days.
A provocative concentration of methacholine causing a 20% fall in FEV1 (PC20) <= 4 mg/mL.
Aged 18-80 years and are ambulatory and able to travel to the clinic.7. A 12-lead electrocardiogram (ECG) with no-clinically significant abnormalities.
Clinical chemistry, haematology and urinalysis results within the laboratory reference ranges or deemed not clinically significant by the Investigator.
Body weight (observable entity)
No other clinically significant abnormality on history and clinical examination (see also Exclusion Criteria).
Able to comply with the requirements of the protocol.
Exclusion Criteria
Experienced a severe exacerbation within 28 days preceding Visit 1.
Onset of uncontrolled seasonal allergy symptoms within 28 days preceding Visit 1. Subjects with a history of allergic rhinitis, seasonal allergy or oesophagitis must be optimally controlled and remain on a stable treatment regimen during the study.
Participation in another study within five half lives or three months of the start of this study, whichever is the longer. This does not apply to methodological or observational studies in which no investigational medicinal product (IMP) was given.
Lower respiratory tract infection within six weeks of Visit 1.5.
Current smokers or ex-smokers with > 10 pack-years (number of pack years = (number of cigarettes per day/20) x number of years smoked, e.g., 20 cigarettes per day for 10 years, or 10 cigarettes per day for 20 years).
Blood donation (> 550 mL) in the previous two months.
Excessive intake of alcohol (as judged by the Investigator) or evidence of drug or solvent abuse.
Subjects with a physician-diagnosis of any other significant lung disease, including a primary diagnosis of chronic obstructive pulmonary disease or bronchiectasis, or lung cancer, sarcoidosis, tuberculosis, pulmonary fibrosis and cystic fibrosis.
Concurrent medication from Visit 1 (screening visit) and for the duration of the study with any of the prohibited medications.
Significant, uncontrolled disease including serious psychological disorders, chronic renal failure, uncontrolled hypertension
hypertension heart disease, psoriasis or stroke
Any factor which, in the opinion of the Investigator, would jeopardise the evaluation or safety or be associated with poor adherence to the protocol (i.e. inability to complete study diary, perform PEF measurements).
The subject's primary care physician recommends the subject should not take part in the study.
Known hypersensitivity to CAT-354 or its components, to the challenge agents used in the study or to related drugs.

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