Clinical trial NCT01126177: Comparing Efficacy and Safety of Inhaled SNG001 to Placebo
Official title: A Randomised, Double-blind, Placebo-controlled Phase II Study, Comparing the Efficacy and Safety of Inhaled SNG001 to Placebo Administered to Asthmatic Subjects After the Onset of a Respiratory Viral Infection for the Prevention or Attenuation of Asthma Symptoms Caused by Respiratory Viruses
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE2
Conditions: Asthma
Keywords: asthma
Lead sponsor: Synairgen Research Ltd.
Sponsor class: INDUSTRY
First posted: 2010-05-19
Enrollment: 300
Sex: ALL
Minimum age (years): 18
Maximum age (years): 65
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: When people with asthma get respiratory virus such as a cold or flu it often increases asthma symptoms. The investigators will test the study medication to find out if it can prevent the virus spreading from the nose to the lungs.

SNG001 contains Interferon-beta that occurs naturally in the body. In this study, SNG001 will be given by a nebuliser.

Detailed description: The study will consist of a Pre-Treatment Phase into which subjects potentially eligible for the Treatment Phase will be recruited. Subjects will remain in the Pre-Treatment Phase until they experience respiratory virus symptoms at which time they will be further screened for eligibility for entry into the Treatment Phase. If eligible, subjects will be randomised 1:1 to receive SNG001 or placebo once daily for 14 days. Doses will be delivered by a CE marked breath actuated nebuliser (I-neb Philips Respironics). Subjects will be assessed for changes in changes in respiratory virus symptoms and asthma symptoms at home using a text message system, and via telephone questionnaire. Lung function will be measured both at home by the subjects (PEFR only) and in the clinic. Efficacy and safety will be monitored until at least 30 days post treatment.

Eligibility criteria: 1. Male or female aged 18 to 65 years of age at the time of screening.
2. Symptoms of asthma for at least 2 years pri or to the Screening Visit, confirmed by a medical history and:

   1. ≥12% and 200mL bronchodilator reversibility at screening or documented in the past, OR,
   2. evidence of bronchial hyper-responsiveness at screening or documented in the past, OR,
   3. a documented hospital admission (including an Accident and Emergency admission) for asthma since the age of 18, OR.
   4. documented evidence that they have attended their GP surgery, out-of-hours clinic (or alternative health care provider) for worsening of asthma symptoms, since the age of 18
3. Must answer "Yes" to the question "Does a cold make your asthma worse?"
4. To have had at least one asthma exacerbation suspected to have been caused by a respiratory virus in the last 24 months which required the use of oral steroids and/or additional treatment with antibiotics on one or more occasion.
5. Must be taking regular inhaled corticosteroids.
6. Pre-bronchodilator FEV1 ≥ 40 % predicted at screening.
7. Post-bronchodilator FEV1 ≥ 50 % predicted at screening.
8. Provide written informed consent.
9. Females of childbearing potential must be using a medically acceptable adequate form of birth control and agree to maintain this usage throughout the duration of and four weeks post the Treatment Phase of the study.
10. Motivation (in the Investigator"s opinion) to complete all study visits, the ability to communicate well with the Investigator and be capable of understanding the nature of the research and its treatment including its risks and benefits.

Primary outcomes:
measure: S-ACQ
timeFrame: Baseline - Day 8
Secondary outcomes:
measure: Asthma Index
timeFrame: Day 1-14
measure: S-ACQ
timeFrame: Baseline - Day 8
measure: Asthma Index
timeFrame: 14 days
measure: Sever Exacerbation
timeFrame: Day 1-14
measure: Lung Function
timeFrame: Day 1-14
measure: Viral Load
timeFrame: Days 4 and 7
measure: Safety
timeFrame: Day 1-14
measure: Concomitant Medications
timeFrame: Day 1-28
measure: Pharmacokinetic
timeFrame: Day 1-14
measure: Pharmacodynamic
timeFrame: Day 1-14
Other outcomes:
Locations:
city: Southampton
country: United Kingdom
facility: Southampton University General Hospital
state: Hampshire
Study officials:
affiliation: University of Southampton
name: Ratko Djukanovic, MD, DM, FRCP
role: PRINCIPAL_INVESTIGATOR
References:
citation: Djukanovic R, Harrison T, Johnston SL, Gabbay F, Wark P, Thomson NC, Niven R, Singh D, Reddel HK, Davies DE, Marsden R, Boxall C, Dudley S, Plagnol V, Holgate ST, Monk P; INTERCIA Study Group. The effect of inhaled IFN-beta on worsening of asthma symptoms caused by viral infections. A randomized trial. Am J Respir Crit Care Med. 2014 Jul 15;190(2):145-54. doi: 10.1164/rccm.201312-2235OC.