NCT00857857已完成2 期
A Randomised, Placebo-controlled, Incomplete Block, Three-way Cross-over Study to Evaluate the Effect of Treatment With Repeat Inhaled Doses of GW870086X on the Allergen-induced Early and Late Asthmatic Response in Subjects With Mild Asthma
适应症
干预措施
相关药物
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 24
- 试验地点
- 1
- 主要终点
- Late Asthmatic Response (LAR): Minimum FEV1 Between 4-10 Hours After Allergen Challenge on Day 13 of Each Treatment Period
研究概览
简要总结
The study will measure the early and late asthamtic response using an allergen challenge. This study will evaluate the safety and patients tolerance to repeat inhaled doses of GW870086X using a number of clinical and biological markers.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Double (Participant, Investigator)
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- Male
- 接受健康志愿者
- 否
入选标准
- •Male subjects between 18 and 65 years of age inclusive.
- •Male subjects must agree to use one of the contraception methods listed in Section
- •This criterion must be followed from the time of the first dose of study medication until 90-95 hours post-last dose.
- •BMI within the range 19.0 - 29.0 kg/m2 (inclusive).
- •Liver function tests (bilirubin, AST, ALT) within normal laboratory parameters at screening.
- •Documented history of bronchial asthma, first diagnosed at least 6 months prior to the screening visit and currently being treated only with intermittent short-acting beta -agonist therapy by inhalation.
- •Pre-bronchodilator FEV1 >65% of predicted at screening.
- •No history of smoking within 6 months of the start of the study, and with a total pack year history of <= 10 pack years
- •Demonstration of a positive wheal and flare reaction (>= 3 mm relative to negative control) to at least one allergen from a battery of allergens (including but not limited to house dust mite, grass pollen, cat dander, hazel, horse and birch) on skin prick testing at screening, or within 12 months of study start.
- •Screening allergen challenge demonstrates that the subject experiences both an early and late asthmatic response. The early asthmatic response must include a fall in FEV1 of >= 20% from the post saline value, on at least one occasion, between 5 and 30 minutes after the final concentration of allergen. The late asthmatic response must include a fall in FEV1 of >= 15% from the post saline value, on at least three occasions, two of which must be consecutive, between 4 and 10 hours after the final concentration of allergen.
- •Reproducible allergen challenge at screening (confirmation of the dose ascending allergen challenge by a bolus allergen challenge at least 14 days later).
- •Sensitivity to methacholine with a provocative concentration of methacholine resulting in a 20% fall in FEV1 (PC20 methacholine) of <8 mg/mL at screening.
- •Subjects who are able to produce acceptable induced sputum samples (as defined in the Study Procedures Manual).
- •Be able to give written informed consent, which includes compliance with the requirements and restrictions listed in the consent form.
- •Single QTcB or QTcF < 450 msec; or QTc < 480 msec in subjects with Bundle Branch Block.
排除标准
- •Past or present disease, which as judged by the investigator, may affect the outcome of this study. These diseases include, but are not limited to, cardiovascular disease, malignancy, hepatic disease, renal disease, haematological disease, neurological disease, endocrine disease or pulmonary disease (including but not confined to chronic bronchitis, emphysema, bronchiectasis or pulmonary fibrosis).
- •Clinically significant abnormalities in safety laboratory analysis at screening.
- •Subject has known history of hypertension or is hypertensive at screening. Hypertension at screening is defined as persistent systolic BP >140mmHg or diastolic BP > 90mmHg.
- •Respiratory tract infection and/or exacerbation of asthma within 4 weeks prior to the first dose of study medication.
- •History of life-threatening asthma, defined as an asthma episode that required intubation and/or was associated with hypercapnoea, respiratory arrest and/or hypoxic seizures.
- •Administration of oral, injectable or dermal steroids within 4 weeks or intranasal and/or inhaled steroids within 2 week of the screening visit.
- •The subject has a positive pre-study drug/alcohol screen. A minimum list of drugs that will be screened for include amphetamines, barbiturates, cocaine, opiates, cannabinoids and benzodiazepines.
- •A positive pre-study Hepatitis B surface antigen or positive Hepatitis C antibody result within 3 months of screening.
- •A positive test for HIV antibody.
- •History of regular alcohol consumption within 6 months of the study defined as:
- •an average weekly intake of greater than 21 units or an average daily intake of greater than 3 units (males). One unit is equivalent to a half-pint (220mL) of beer or 1 (25ml) measure of spirits or 1 glass (125ml) of wine.
- •The subject has participated in a clinical trial and has received an investigational product within the following time period prior to the first dosing day in the current study: 30 days, 5 half-lives or twice the duration of the biological effect of the investigational product (whichever is longer).
- •Exposure to more than four new chemical entities within 12 months prior to the first dosing day.
- •Use of prescription or non-prescription drugs, including vitamins, herbal and dietary supplements (including St John's Wort) within 7 days (or 14 days if the drug is a potential enzyme inducer) or 5 half-lives (whichever is longer) prior to the first dose of study medication, unless in the opinion of the Investigator and GSK Medical Monitor the medication will not interfere with the study procedures or compromise subject safety. Paracetamol is an exception and will be permitted at daily doses of up to 4 g from screening to follow-up.
- •Has taken Xanthines (including theophylline, but not including caffeine), anticholinergics, cromoglycates and/or long-acting beta-agonists within 1 week prior to screening and is unable to abstain from them throughout the study.
- •Unable to abstain from other medications including non-steroidal anti-inflammatory drugs (NSAIDs), anti-depressant drugs, anti-histamines and anti-asthma (not including steroids), anti-rhinitis or hay fever medication, other than short acting inhaled beta-agonists and paracetamol (up to 4 g per day) for the treatment of minor ailments eg headache from 7 days before screening until the follow-up visit.
- •Unable to abstain from medication or supplements that significantly inhibit the cytochrome P450 subfamily enzyme CYP3A4, including ritonavir and ketoconazol from screening and throughout the study.
- •Unable to use the DISKHALER and/or DISKUS device correctly.
- •History of being unable to tolerate or complete methacholine or allergen challenge tests.
- •If, after 2 concurrent administrations of saline during the allergen challenge at screening the subjects still have a fall in FEV1 of greater than 10%.
- •Subject is undergoing allergen desensitisation therapy.
- •History of sensitivity to any of the study medications (including lactose), or components thereof or a history of drug or other allergy that, in the opinion of the investigator or GSK Medical Monitor, contraindicates their participation.
- •Where participation in the study would result in donation of blood or blood products in excess of 500 mL within a 56 day period.
- •Unwillingness or inability to follow the procedures outlined in the protocol.
- •Subjects who are kept due to regulatory or juridical order in an institution.
- •Urinary cotinine levels indicative of smoking or history or regular use of tobacco- or nicotine-containing products within 3 months prior to screening.
- •Consumption of red wine, seville oranges, grapefruit or grapefruit juice and/or pummelos, exotic citrus fruits, grapefruit hybrids or fruit juices from 7 days prior to the first dose of study medication.
研究组 & 干预措施
13 day repeat dose
Experimental
干预措施: GW870086X (Drug)
13 day repeat dose
Experimental
干预措施: FP (Drug)
13 day repeat dose
Experimental
干预措施: Placebo (Drug)
结局指标
主要结局
Late Asthmatic Response (LAR): Minimum FEV1 Between 4-10 Hours After Allergen Challenge on Day 13 of Each Treatment Period
时间窗: 4-10 hours after allergen challenge on Day 13 of each treatment period
Analyzed using a mixed effects model including covariates for participant level Baseline FEV1 and period level Baseline FEV1. Participant level Baseline defined as the mean of Day 1 pre-dose values across periods for each participant and period level Baseline as the difference between the Day 1 pre-dose value and participant level Baseline for each period. Absolute change from saline Baseline was calculated for each participant and time point as value equal to highest challenge value minus highest saline value. Minimum FEV1 over 4-10 hours post allergen challenge was minimum value of all the post-saline time points between 4 to 10 hours (4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5 and 10 hours). The adjusted mean is presented as least square mean (LSM).
次要结局
- LAR: Weighted Mean FEV1 Between 4-10 Hours After Allergen Challenge on Day 13 of Each Treatment Period.(4-10 hours after allergen challenge on Day 13 of each treatment period)
- Number of Participants With Adverse Events (AE), Treatment Emergent Adverse Events (TEAE) and Serious Adverse Events (SAE)(Up to 17 weeks)
- EAR: Minimum FEV1 and Weighted Mean FEV1 Between 0-2 Hours After Allergen Challenge on Day 13 of Each Treatment Period.(0-2 hours after challenge on Day 13 of each treatment period (approximately 17 weeks))
- Concentration of Exhaled NO Pre-dose on Day 13 of Each Treatment Period(Day 13 of each treatment period (approximately 17 weeks))
- Concentration of Exhaled NO Post-dose on Day 13 of Each Treatment Period(Day 13 of each treatment period (approximately 17 weeks))
- Mean Values for Systolic Blood Pressure (SBP) and Diastolic Blood Pressure (DBP)(Up to Day 14 of each treatment period (approximately 17 weeks))
- Mean Values for Heart Rate(Up to Day 14 of each treatment period (approximately 17 weeks))
- Number of Participants With Electrocardiogram (ECG) Findings(Up to Day 14 of each treatment period (approximately 17 weeks))
- Mean Laboratory Values for Hemoglobin and Mean Corpuscle Hemoglobin Concentration (MCHC)(Up to Day 14 of each treatment period (approximately 17 weeks))
- Mean Laboratory Values for Hematocrit(Up to Day 14 of each treatment period (approximately 17 weeks))
- Change From Baseline in FEV1-allergen Challenge at Each Time Point(Up to Day 13 of each treatment period (approximately 17 weeks))
- Mean Laboratory Values for Mean Corpuscle Volume (MCV)(Up to Day 14 of each treatment period (approximately 17 weeks))
- Mean Laboratory Values for Reticulocytes(Up to Day 14 of each treatment period (approximately 17 weeks))
- Mean Laboratory Values for Total Bilirubin, Direct Bilirubin and Creatinine(Up to Day 14 of each treatment period (approximately 17 weeks))
- Mean Laboratory Values for Calcium, Glucose, Potassium, Chloride and Sodium(Up to Day 14 of each treatment period (approximately 17 weeks))
- Provocative Concentration of Methacholine Resulting in a 20% Reduction in FEV1 (PC20) on Day 14 of Each Treatment Period.(Day 14 of each treatment period (approximately 17 weeks))
- Mean Laboratory Values for Platelet, White Blood Cells (WBC), Neutrophils, Lymphocytes, Monocytes, Eosinophils and Basophils(Up to Day 14 of each treatment period (approximately 17 weeks))
- Change From Baseline in FEV1-non Allergen Challenge(Up to Day 14 of each treatment period (approximately 17 weeks))
- Assessment of Established Markers of Anti-inflammatory Activity in Sputum on Day 14-cell Counts of Eosinophils and Neutrophils(Day 14 of each treatment period (approximately 17 weeks))
- Assessment of Established Markers of Anti-inflammatory Activity in Sputum on Day 14-myeloperoxidase (MPO)(Day 14 of each treatment period (approximately 17 weeks))
- Assessment of Established Markers of Anti-inflammatory Activity in Sputum on Day 14-interleukin-8 (IL-8)(Day 14 of each treatment period (approximately 17 weeks))
- Number of Participants With Established Markers of Anti-inflammatory Activity in Sputum on Day 14-messenger Ribonucleic Acid (mRNA)(Day 14 of each treatment period (approximately 17 weeks))
- Mean Laboratory Values for Albumin and Total Protein(Up to Day 14 of each treatment period (approximately 17 weeks))
- Assessment of Established Markers of Anti-inflammatory Activity in Sputum on Day 14-total Protein(Day 14 of each treatment period (approximately 17 weeks))
- Mean Laboratory Values for Mean Corpuscle Hemoglobin (MCH)(Up to Day 14 of each treatment period (approximately 17 weeks))
- Mean Laboratory Values for Alkaline Phosphatase (ALP), Alanine Amino Transferase (ALT), Aspartate Amino Transferase (AST) and Gamma Glutamyl Transferase (GGT)(Up to Day 14 of each treatment period (approximately 17 weeks))
研究者
研究点 (1)
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