Please select the eligibility criteria that correspond to the clinical trial below.
Title: Effect of Roflumilast on Exacerbation Rate in Patients With COPD Treated With Fixed Combinations of LABA and ICS. A 52-week, Randomised Double-blind Trial With Roflumilast 500 µg Versus Placebo. The REACT Trial
Brief Summary: The objective of the REACT trial is to investigate the effect of roflumilast 500 μg tablets once daily versus placebo on exacerbation rate and pulmonary function in COPD patients who are concomitantly treated with a fixed combination of long-acting β2-agonists (LABA) and inhaled glucocorticosteroids (ICS). In addition, data on safety and tolerability of roflumilast will be obtained. An additional objective is to further characterize the population pharmacokinetic profile of roflumilast and roflumilast N oxide and to further characterize their pharmacokinetics/pharmacodynamics (PK/PD) relationship in terms of efficacy and relevant safety aspects.

Patients to be included are required to have severe COPD associated with chronic bronchitis and a history of frequent exacerbations and must be concomitantly treated with a fixed combination of LABA and ICS. Two parallel treatment arms (roflumilast 500 μg once daily and placebo) are included.


Options:
A: Inclusion Criteria:

* Male and female adults aged ≥40 years, who have signed an Informed Consent form prior to initiation of any study-related procedure
* Patients diagnosed with COPD at age 40 and over and with a current diagnosis of severe COPD and including:

  1. Smoking history of at least 10 pack years, both current and ex-smokers are eligible
  2. A documented history of at least 1 moderate or severe exacerbation in the previous 12 months

Exclusion Criteria:

* Patients who have received systemic corticosteroids and/or antibiotics for a COPD exacerbation in the 6 weeks prior to screening or during the run-in period
* Patients who have had a respiratory tract infection within 6 weeks prior to screening
* Patients with concomitant pulmonary disease
* Patients with a history of asthma
* Patients with diabetes Type I or uncontrolled diabetes Type II
* Any patient with lung cancer or a history of lung cancer
* Patients with a history of certain cardiovascular comorbid conditions

Other protocol-defined inclusion/exclusion criteria may apply
B: Inclusion Criteria:

* Giving written informed consent
* History of COPD (according to GOLD 2009) for at least 12 months prior to baseline Visit V0 associated with chronic productive cough for 3 months in each of the 2 years prior to baseline visit (with other causes of productive cough excluded)
* Age ≥ 40 years
* Forced expiratory volume after one second (FEV1)/forced vital capacity (FVC) ratio (post-bronchodilator) \< 70%
* FEV1 (post-bronchodilator) ≤ 50% of predicted
* At least two documented moderate or severe COPD exacerbations within one year prior to baseline visit
* Patients must be pre-treated with LABA and ICS for at least 12 months before baseline Visit V0. Up to 3 months before baseline Visit V0 free or fixed combinations of LABA and ICS are allowed, including changes in dose, active substances, and brands. In the last 3 months before baseline Visit V0 patients must be pre-treated with fixed combinations of LABA and ICS at a constant dose (maximum approved dosage strength of the combination).
* Former smoker (defined as smoking cessation at least one year ago) or current smoker both with a smoking history of at least 20 pack years

Main Exclusion Criteria:

* Exacerbations not resolved at first baseline visit
* Diagnosis of asthma and/or other relevant lung disease
* Known alpha-1-antitrypsin deficiency
* Other protocol-defined exclusion criteria may apply
C: Inclusion Criteria:

* Type of subject: Outpatient
* Informed consent: Subjects must give their signed and dated written informed consent to participate.
* Gender: Male or female subjects.
* Age: greater then or equal to 40 years of age at Screening (Visit 1)
* COPD diagnosis: Subjects with a clinical history of COPD in accordance with the following definition by the American Thoracic Society (ATS) /European Respiratory Society(ERS).
* Subjects with a current or prior history ofgreater then or equal to 10 pack-years of cigarette smoking at Screening (Visit 1).
* Subjects with a measured post-albuterol/salbutamol FEV1 less then 70% of predicted at Screening (Visit 1).
* Subjects with a measured post-albuterol/salbutamol FEV1/FVC ratio of less then or equal to 0.70 at Screening (Visit 1).
* Exacerbation History: Subjects who have been hospitalised or have been treated with oral corticosteroids or antibiotics for their COPD within the last 3 years prior to Screening (V1).
* Baseline aPWV: subjects with a measured aPWV greater then 12.0 m/s at Screening (Visit 1).

Exclusion Criteria:

* Body Mass Index of less then or equal to 35
D: Inclusion Criteria:

* Written informed consent must be obtained before any assessment is performed
* Male or female adults aged ≥40 years
* Patients with stable Chronic Obstructive Pulmonary Disease ( COPD) according to the current GOLD strategy (GOLD 2011)
* Current or ex-smokers who have a smoking history of at least 10 pack years. (Ten pack-years are defined as 20 cigarettes a day for 10 years, or 10 cigarettes a day for 20 years)
* Patients with a post-bronchodilator Forced Expiratory Volume in one second (FEV1) ≥25 and \< 60% of the predicted normal value, and post-bronchodilator FEV1/FVC (Forced Vital Capacity) \< 0.70 at day -28. (Post refers to 1 hour after sequential inhalation of 84 µg (or equivalent dose) of ipratropium bromide and 400 µg of salbutamol)
* A documented history of at least 1 COPD exacerbation in the previous 12 months that required treatment with systemic glucocorticosteroids and/or antibiotics
* Patients taking stable COPD medication (at least 60 days) prior to day 28
* Patients with an mMRC grade of at least 2 at day 28

Exclusion Criteria:

* Pregnant or nursing (lactating) women, where pregnancy is defined as the state of a female after conception and until the termination of gestation, confirmed by a positive hCG (human Chorionic Gonadotropin) laboratory test
* Women of child-bearing potential, defined as all women physiologically capable of becoming pregnant, unless they are using effective methods of contraception during dosing of study treatment. Women are considered post-menopausal and not of child bearing potential if they have had 12 months of natural (spontaneous) amenorrhea with an appropriate clinical profile (e.g. age appropriate, history of vasomotor symptoms) or have had surgical bilateral oophorectomy (with or without hysterectomy) or tubal ligation at least six weeks ago. In the case of oophorectomy alone, only when the reproductive status of the woman has been confirmed by follow up hormone level assessment is she considered not of child bearing potential
* Patients with Type I or uncontrolled Type II diabetes
* Patients with a history of long QT syndrome or whose QTc measured at day 28 (Fridericia method) is prolonged (\>450 ms for males and females) and confirmed by a central assessor. These patients should not be re-screened
* Patients who have a clinically significant ECG abnormality prior to randomization. (These patients should not be re-screened)
* Patients who have a clinically significant laboratory abnormality at screening
* Patients who have clinically significant renal, cardiovascular (such as but not limited to unstable ischemic heart disease, NYHA Class III/IV left ventricular failure, myocardial infarction), arrhythmia (see below for patients with atrial fibrillation), neurological, endocrine, immunological, psychiatric, gastrointestinal, hepatic, or hematological abnormalities which could interfere with the assessment of the efficacy and safety of the study treatment
* Patients with paroxysmal (e.g. intermittent) atrial fibrillation are excluded
* Patients with persistent atrial fibrillation as defined by continuous atrial fibrillation for at least 6 months and controlled with a rate control strategy (i.e., selective beta blocker, calcium channel blocker, pacemaker placement, digoxin or ablation therapy) for at least 6 months may be considered for inclusion. In such patients, atrial fibrillation must be present at both pre-randomization visits, with a resting ventricular rate \< 100/min. At screening the atrial fibrillation must be confirmed by central reading
* Patients contraindicated for treatment with, or having a history of reactions/ hypersensitivity to any of the following inhaled drugs, drugs of a similar class or any component thereof: anticholinergic agents, long and short acting beta-2 agonists, sympathomimetic amines, lactose or any of the other excipients of trial medication
* Patients with a history of malignancy of any organ system, treated or untreated, within the past 5 years whether or not there is evidence of local recurrence or metastases, with the exception of localized basal cell carcinoma of the skin
* Patients with narrow-angle glaucoma, symptomatic benign prostatic hyperplasia or bladder-neck obstruction or moderate to severe renal impairment or urinary retention. Benign Prostatic Hyperplasia (BPH) patients who are stable on treatment can be considered
* Patients who have not achieved an acceptable spirometry results at screening in accordance with American Thoracic Society (ATS)/European Respiratory Society (ERS) criteria for acceptability (one retest may be performed for patients that don't meet the acceptability criteria)
* Patients who have had a COPD exacerbation that required treatment with antibiotics and/or systemic corticosteroids and/or hospitalization in the 6 weeks prior to screening
* Patients who develop a COPD exacerbation of any severity (mild/moderate/severe) between screening and treatment will not be eligible but will be permitted to be re-screened after a minimum of 6 weeks after the resolution of the COPD exacerbation
* Patients who have had a respiratory tract infection within 4 weeks prior to screening
* Patients who develop a respiratory tract infection between screening and prior to treatment will not be eligible, but will be permitted to be re-screened 4 weeks after the resolution of the respiratory tract infection
* Patients requiring long term oxygen therapy prescribed for \>12 hours per day
* Patients with any history of asthma
* Patients with an onset of respiratory symptoms, including a COPD diagnosis prior to age 40 years
* Patients with a blood eosinophil count \> 600/mm3 at screening
* Patients with allergic rhinitis who use a H1 antagonist or intra-nasal corticosteroids intermittently (treatment with a stable dose or regimen is permitted)
* Patients with concomitant pulmonary disease (e.g. lung fibrosis, sarcoidosis, interstitial lung disease, pulmonary hypertension)
* Patients with clinically significant bronchiectasis
* Patients with a diagnosis of α-1 anti-trypsin deficiency
* Patients with active pulmonary tuberculosis, unless confirmed by imaging to be no longer active
* Patients with pulmonary lobectomy or lung volume reduction surgery or lung transplantation
* Patients participating in or planning to participate in the active phase of a supervised pulmonary rehabilitation program during the study. (Maintenance program is permitted.)
* Patients receiving any medications in the classes listed in the protocol
* Patients receiving any COPD related medications in the classes specified in the protocol must undergo the required washout period prior to screening and follow the adjustment to treatment program
* Use of other investigational drugs/devices (approved or unapproved) at the time of enrollment, or within 30 days or 5 half-lives of screening, whichever is longer
* Patients unable to use an electronic patient diary and EXACT pro diary
* Patients unable to use a dry powder inhaler device, Metered Dose Inhaler (MDI) or a pressurized MDI (rescue medication) or comply with the study regimen.

Answer: B