| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated  | 
| Chronic Obstructive Pulmonary disease  | 
 
 
 | 
| E.1.1.1 | Medical condition in easily understood language  | 
| COPD - Chronic Obstructive Pulmonary disease | 
 
 
 | 
| E.1.1.2 | Therapeutic area  | Diseases [C] - Respiratory Tract Diseases [C08] | 
| MedDRA Classification | 
| E.1.3 | Condition being studied is a rare disease  |  No  | 
| E.2 Objective of the trial | 
| E.2.1 | Main objective of the trial  | 
| The primary objective is to study the effect of treatment with a cardio-selective beta-blocker (metoprolol) on major adverse cardiac and pulmonary events i.e. death, exacerbations of COPD and cardiovascular events till 1 year, in patients with COPD and no co-existing cardiovascular disease. | 
 
 
 | 
| E.2.2 | Secondary objectives of the trial  | 
| Our secondary objectives are to study time to all-cause and cause specific death, time to exacerbations of COPD and respectively time to a cardiovascular event within 1 year. Additionally, an extensive health economic analysis will be conducted. | 
 
 
 | 
| E.2.3 | Trial contains a sub-study  |  No  | 
| E.3 | Principal inclusion criteria  | 
A diagnosis of COPD confirmed by spirometry showing post bronchodilator value of Forced Expiratory Volume in one second (FEV1)//Forced Vital Capacity (FVC) < 70 according to the Global Initiative on Obstructive Pulmonary Disease (GOLD), and with a history of tobacco smoking or occupational/environmental exposure for smoke gas or dust And: - ≥40 years of age. - Sinus rhythm ≥50/min and <120 at inclusion. - Written informed consent. | 
 
 
 | 
| E.4 | Principal exclusion criteria | 
- Known hypersensitivity to metoprolol or related derivatives. - AF or other arrhythmias for which beta blockers are indicated according to    the investigator discretion. - AV block II or III unless treated with a pacemaker. - Sinus bradycardia (resting heart rate <50/min). - Sick sinus syndrome unless treated with a pacemaker. - Clinical signs of or a previous diagnosis of HF. - Systolic blood pressure <90 mmHg. - Severe bronchial asthma. - Current beta-blocker treatment. - Inability to provide informed consent. - Age below 40 years. - Acute on-going exacerbation of COPD. - Previous randomization in the BRONCHIOLE trial. 
 | 
 
 
 | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| A composite of death, exacerbations of COPD, (defined as hospitalization with a primary hospital diagnosis with International Classification of Diseases 10th edition discharge codes for COPD [J44.0 or J44.1] or a COPD exacerbation where a course of per oral steroids was prescribed), and cardiovascular events (AMI, angina pectoris, HF and stroke, TIA or cerebral hemorrhage) requiring hospitalization till 1 year. | 
 
 
 | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
 | 
| E.5.2 | Secondary end point(s) | 
- death (all-cause and cause-specific) till 1 year - exacerbation of COPD according to the definition above till 1 year - hospitalization for MI or angina pectoris till 1 year - hospitalization for AF or other forms of arrhythmia - hospitalization for stroke, TIA or cerebral hemorrhage  - hospitalization for HF till 1 year - Additionally, an extensive health-economic analysis will be conducted 
 | 
 
 
 | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
 | 
| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis |  No  | 
| E.6.2 | Prophylaxis |  Yes  | 
| E.6.3 | Therapy |  No  | 
| E.6.4 | Safety |  No  | 
| E.6.5 | Efficacy |  No  | 
| E.6.6 | Pharmacokinetic |  No  | 
| E.6.7 | Pharmacodynamic |  No  | 
| E.6.8 | Bioequivalence |  No  | 
| E.6.9 | Dose response |  No  | 
| E.6.10 | Pharmacogenetic |  No  | 
| E.6.11 | Pharmacogenomic |  No  | 
| E.6.12 | Pharmacoeconomic |  No  | 
| E.6.13 | Others |  No  | 
| E.7 | Trial type and phase | 
| E.7.1 | Human pharmacology (Phase I) |  No  | 
| E.7.1.1 | First administration to humans |  No  | 
| E.7.1.2 | Bioequivalence study |  No  | 
| E.7.1.3 | Other |  No  | 
| E.7.1.3.1 | Other trial type description |  | 
| E.7.2 | Therapeutic exploratory (Phase II) |  No  | 
| E.7.3 | Therapeutic confirmatory (Phase III) |  Yes  | 
| E.7.4 | Therapeutic use (Phase IV) |  No  | 
| E.8 Design of the trial | 
| E.8.1 | Controlled |  No  | 
| E.8.1.1 | Randomised |  No  | 
| E.8.1.2 | Open |  Yes  | 
| E.8.1.3 | Single blind |  No  | 
| E.8.1.4 | Double blind  |  No  | 
| E.8.1.5 | Parallel group |  No  | 
| E.8.1.6 | Cross over  |  No  | 
| E.8.1.7 | Other |  No  | 
| E.8.2 |  Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) |  No  | 
| E.8.2.2 | Placebo  |  No  | 
| E.8.2.3 | Other |  No  | 
| E.8.3 | 
                                The trial involves single site in the Member State concerned
                             |  No  | 
| E.8.4 |  The trial involves multiple sites in the Member State concerned  |  Yes  | 
| E.8.4.1 | Number of sites anticipated in Member State concerned | 20 | 
| E.8.5 | The trial involves multiple Member States |  No  | 
| E.8.6 Trial involving sites outside the EEA | 
| E.8.6.1 | Trial being conducted both within and outside the EEA |  No  | 
| E.8.6.2 | Trial being conducted completely outside of the EEA |  No  | 
| E.8.7 | Trial has a data monitoring committee |  No  | 
| E.8.8 | 
                        Definition of the end of the trial and justification where it is not the last
                        visit of the last subject undergoing the trial
                     | 
 | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 7 | 
| E.8.9.1 | In the Member State concerned months | 10 | 
| E.8.9.1 | In the Member State concerned days | 0 | 
| E.8.9.2 | In all countries concerned by the trial years | 7 | 
| E.8.9.2 | In all countries concerned by the trial months | 10 | 
| E.8.9.2 | In all countries concerned by the trial days | 0 |