Increase in inhaled corticosteroid dose vs triple therapy in T2-high asthma patients who remain uncontrolled with medium dose inhaled corticosteroids/long-acting β2 adrenergic combination: a real-life study.
It remains to be clarified whether triple therapy is better than high dose inhaled corticosteroids and long-acting beta2-agonists combination (ICS/LABA) in patients with uncontrolled asthma despite the use of medium dose ICS/LABA combinations, particularly in cases with high T2 biomarkers´ values. The aim of this study is to evaluate, in a real-world setting, which is the best therapeutic strategy in this clinical scenario. This study will be a randomized, open-label, two-arm, prospective, 12-month trial to be conducted in 53 hospital asthma units. Participants will be allocated to receive one of two therapeutic strategies: same ICS/LABA combination at highest doses or the same maintenance therapy plus a long-acting anticholinergic (LAMA). Follow up visits will be scheduled at 12-16, 24-28 and 52 weeks after the baseline visit. The investigators can optimise therapy according to their clinical opinion if the patient remains uncontrolled. Demographic, clinical and lung function information will be collected at each visit. The primary endpoint will be the percentage of patients controlled at week 52, with both an ACT score of 20 or greater and no severe exacerbations). 620 patients (282 patients per treatment group, considering 10% drop-out) will be required for the study to have 80% power to detect non-inferiority limit of 10% in the rate of controlled patients between the high dose ICS/LABA arm and the triple therapy arm. All effectiveness analyses will be done according to the intention-to-treat principle. Secondary endpoints: percentage of patients controlled at week 24, ACT at weeks 12, 24 and 52, AIRQ at weeks 12, 24 and 52, quality of life (Mini-AQLQ) at weeks 12, 24 and 52, postbronchodilator FEV1 at weeks 12, 24 and 52, severe exacerbations at week 24 and 52. Differences between groups in 8 AM serum cortisol at week 52. Adherence at week 52 in the two study arms. Factors related to triple and high-dose ICS/LABA failure and success (control) at week 52. The results of this study will help physicians to decide the most appropriate therapeutic strategy for a large number of asthma patients: those who do not gain control with medium dose ICS/LABA. If non-inferiority of triple therapy vs high dose ICS/LABA is demonstrated, it could lead to a modification of the current guidelines.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Participants will be assigned to receive one of two therapeutic strategies: the same ICS/LABA combination at the higher doses or the same maintenance treatment at medium doses plus a LAMA.
Hospital Universitario de A Coruña
A Coruña, A Coruña, Spain
Hospital General Universitario Dr. Balmis de Alicante
Alicante, Alicante, Spain
The percentage of patients controlled
The primary endpoint will be the percentage of patients controlled at week 52, with both an ACT score of 20 or greater and no severe exacerbations.
Time frame: At 52 weeks
Percentage of patients controlled
Percentage of patients controlled at week 24, with both an ACT score of 20 or greater and no severe exacerbations.
Time frame: At week 24
ASMA CONTROL TEST (ACT)
This is a 5-point scale. Scores range from 5 (poor asthma control) to 25 (total asthma control), with higher scores reflecting better asthma control. An ACT score \>19 indicates well-controlled asthma. The minimally important difference (MID) is 3 points.
Time frame: At weeks 12, 24 and 52
AIRQ
It is a patient assessment tool intended to help identify patients aged 12 years and older whose health may be at risk due to uncontrolled asthma. It is a 10-item, equally weighted asthma control questionnaire comprising 7 impairment items and 3 risk items.
Time frame: At weeks 12, 24 and 52
Quality of life (Mini-AQLQ)
This instrument has 15 questions in the same domains as the original AQLQ (symptoms, activities, emotions and environment). A change in score greater than 0.5 can be considered clinically important.
Time frame: At weeks 12, 24 and 52
Postbronchodilator FEV1
Performed with equipment and techniques that meet the standards developed by the Spanish Society of Respiratory Medicine (SEPAR) (18). Spirometry results will include pre-/ post-bronchodilator FEV1 (in litres) and % predicted value, FVC (in litres and % predicted) and FEV1/FVC ratio. Bronchodilator response is defined as an increase in post-bronchodilator FEV1 \>12% and \>0.2 l (measured 15 minutes after inhalation of 200 μg of salbutamol, using a spacer chamber) compared to pre-bronchodilator FEV1.
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Hospital Comarcal de Inca - Tramuntana
Inca, Balearic Islands, Spain
Hospital Universitario Son Espases
Palma de Mallorca, Balearic Islands, Spain
Hospital de la Santa Creu i Sant Pau
Barcelona, Barcelona, Spain
Hospital Universitario de Cruces
Barakaldo, Bizkaia, Spain
Hospital Universitario Galdakao-Usansolo
Galdakao, Bizkaia, Spain
Hospital Universitario De Jerez
Jerez de la Frontera, Cádiz, Spain
Hospital Universitario Virgen de las Nieves
Granada, Granada, Spain
Hospital Universitario Clínico San Cecilio
Granada, Granada, Spain
...and 7 more locations
Time frame: At weeks 12, 24 and 52
Severe exacerbations
Severe exacerbations
Time frame: At week 24 and 52
Differences between groups in 8 AM serum cortiso
Differences between groups in 8 AM serum cortiso
Time frame: At week 52
Adherence in the two study arms
Adherence in the two study arms
Time frame: At week 52
Factors related to triple and high-dose ICS/LABA failure and success (control)
Factors related to triple and high-dose ICS/LABA failure and success (control)
Time frame: At week 52