Relvar Salford Lung Study (SLS) – pioneering asthma results
SLS asthma is the world’s first large prospective asthma effectiveness randomised controlled trial (RCT). With a patient population of 4,233, the trial measured the effectiveness and safety when initiating Relvar compared with continuing usual care (ICS or ICS/LABA), which was based on GPs decision. 12
A broad patient population, broad results
With broad inclusion criteria, the trial was designed to reflect the kind of patients that you see in your clinical practice:
1. Broad patient population: patients with co-morbidities, polypharmacy, smokers were allowed 13
2. Primary care setting: everyday clinical practice where most asthma patients are treated 124
3. Minimal intervention: patient monitoring and data collection via electronic records, which allowed minimal study intervention 12
A trial designed to reflect everyday clinical setting
Usual care as comparator: patients comprised the PEA and ITT respectively, 34% were on ICS and 66% on ICS/LABA (PEA). 2
Primary endpoint: Asthma Control Test™ (ACT) improvement of ≥3 or total ACT ≥20 in patients initiating Relvar vs. continuing usual care* at Month 6 in the Primary Effectiveness Analysis (PEA) population. 1
Improved control by initiating Relvar
Relvar improved asthma control* in significantly more patients, vs. continuing on ICS, in everyday clinical practice 1*†
Improvements sustained at 12 months
Consistent and sustained superiority vs ICS throughout the 12 month study 1
This study represents a broad population of patients where 3,026 and 4,233 patients comprised the PEA and ITT respectively, 34% were on ICS and 66% on ICS/LABA (PEA). 1
The primary endpoint‡ of the study was met (p<0.001). 1
Relvar improved asthma control vs baseline which translates into meaningful benefits for your patients 1*†‡
*Patients continued to receive treatment as prescribed by their GP. 2
†Patients in this subset were initiated with Relvar (324/440) or continued on ICS (259/454).
‡Primary endpoint was Asthma Control Test™ (ACT) improvement of ≥3 or total ACT ≥20 in patients initiating Relvar vs. continuing usual care* at Month 6 in the Primary Effectiveness Analysis (PEA) population.
The PEA population consisted of all ITT patients with a total ACT <20 at baseline.
ACT is a trademark of Quality Metric Inc. 1
- Woodcock et al. Lancet 2017: http://dx.doi.org/10.1016/S0140-6736(17)32397-8 [Accessed: September 2017]
- Woodcock A et al. The Salford Lung Study protocol: a pragmatic, randomised phase III real-world effectiveness trial in asthma. BMC Pulm Med. 2015; 15:160.
- New JP et al. Obtaining real-world evidence: the Salford Lung Study. Thorax 2014; 69: 1152-4.
- Vermeire PA et al. Asthma control and differences in management practices across seven European countries. Resp Med 2002 Mar; 96(3): 142-9.
- Herland K et al. How representative are clinical study patients with asthma or COPD for a larger ‘‘real life’’ population of patients with obstructive lung disease? Respir Med 2005; 99: 11–19.
- Relvar Ellipta Summary of Product Characteristics, GlaxoSmithKline
- Schatz M et al. The minimally important difference of the Asthma Control Test. J Allergy Clin Immunol. 2009; 124: 719–723.
- Schatz M et al. Asthma Control Test: Reliability, validity, and responsiveness in patients not previously followed by asthma specialists. J Allergy Clin Immunol. 2006; 117: 549–556.
- Nathan RA et al. Development of the Asthma Control Test: A survey for assessing asthma control. J Allergy Clin Immunol. 2004; 113: 59–65.
- Bernstein DI et al. Fluticasone furoate (FF)/vilanterol (100/25 mcg or 200/25 mcg) or FF (100 mcg) in persistent asthma. J Asthma. 2015; 52(10): 1073–1083.
- Bateman ED et al. Once-daily fluticasone furoate (FF)/vilanterol reduces risk of severe exacerbations in asthma versus FF alone. Thorax. 2014; 69: 312–319.
- Svedsater H et al. Ease of use of the ELLIPTA™ dry powder inhaler: data from three randomised controlled trials in patients with asthma. NPJ Prim Care Resp Med. 2014; 24: 14019.