| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated  | 
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| E.1.1.1 | Medical condition in easily understood language  | 
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| E.1.1.2 | Therapeutic area  | Diseases [C] - Cardiovascular Diseases [C14] | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| E.1.2 | Version  | 14.1 | 
 
| E.1.2 | Level  | LLT | 
 
| E.1.2 | Classification code  | 10003661 | 
 
| E.1.2 | Term  | Atrial fibrillation paroxysmal | 
 
| E.1.2 | System Organ Class  | 10007541 - Cardiac disorders | 
 
 
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| E.1.2 Medical condition or disease under investigation | 
| E.1.2 | Version  | 14.1 | 
 
| E.1.2 | Level  | LLT | 
 
| E.1.2 | Classification code  | 10034039 | 
 
| E.1.2 | Term  | Paroxysmal atrial fibrillation | 
 
| E.1.2 | System Organ Class  | 10007541 - Cardiac disorders | 
 
 
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| 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 assess, by the use of long term beat to beat pacemaker monitoring, the effect of BMS-914392 on the reduction of placebo-corrected AF burden (% of time spent in AF) in pacemaker subjects with paroysmal AF. | 
 
 
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| E.2.2 | Secondary objectives of the trial  | 
• To assess the effect of BMS-914392 on the total number of AF episodes, average duration of AF per episode, and average sinus rhythm duration derived from continuous pacemaker monitoring.
 • To assess the effect of BMS-914392 on subject-perceived AF-related symptoms through self-reporting using the Canadian Cardiovascular Society Atrial Fibrillation Severity Scale (CCS-AFSS).
 • To assess the safety and tolerability of BMS-914392.
 • To assess the effect of BMS-914392 on PR, QRS, RR, QT, and QTc intervals derived from 12-lead ECGs for periods of sinus rhythm.
 • To assess the pharmacokinetics of BMS-914392 on Day 1 and Day 8 of Period 1, 2, 3, and 4. | 
 
 
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| E.2.3 | Trial contains a sub-study  |  No  | 
| E.3 | Principal inclusion criteria  | 
• Women of childbearing potential (WOCBP) and men must be using an acceptable method of contraception to avoid pregnancy
 • Paroxysmal atrial fibrillation (AF) within 6 month prior to screening.
 • Programmable dual chamber pacemaker with appropriate arrhythmia diagnostics that was implanted for a primary or secondary indication at least 1 month with a stable peacemaker assessment prior to screening.
 a. 1-50% AF burden (% of time spend in AF) on pacemaker interrogation at screening.
 • Any oral anticoagulant approved for use in atrial fibrillation for prevention of stroke or other embolic disease.
 • Able to tolerate withdrawal of antiarrhythmic therapy.
 • Able to tolerate pacemaker antiarrhythmic algorithms turned off.
 • Clinically stable at the time of randomization as determined by the investigator. | 
 
 
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| E.4 | Principal exclusion criteria | 
• AF burden <1% and > 50% on pacemaker interrogation prior to first dosing.
 • Permanent AF.
 • Development of persistent AF prior to first dosing.
 • Any significant acute or chronic medical illness that is severe, progressive or uncontrolled at the time of screening.
 • Current or history of neurological diseases and mental disorders, including syncope, convulsive disorders such as epilepsy, central thrombosis and cerebral embolism, stroke, or accidents involving brain injuries.
 • History of TIA in the last 12 months.
 • History of Ventricular Arrythmia.
 • Cardioversion within 3 months of study drug administration. | 
 
 
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| E.5 End points | 
| E.5.1 | Primary end point(s) | 
• AF burden: percent of time in which a subject is in AF 
 
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| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
Measured from Day 8 to Day 22 of Periods 1, 2, 3, 4 and Day 1 to Day 8 of period 5. 
 
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| E.5.2 | Secondary end point(s) | 
• Total number of AF episodes
 • Average duration of AF per episode
 • Average sinus rhythm duration
 • Self-reported AF symptoms
 • ECG intervals derived from 12-lead ECGs
 
 • Safety assessments will be based on medical review of adverse event reports and the results of vital sign measurements, 12-lead ECGs, physical and neurological examinations and clinical laboratory tests. The incidence of observed adverse events will be tabulated and reviewed for potential significance and clinical importance.
 
 • Pharmacokinetic Measures: 
 Observed Cmin at steady state (Day 7) | 
 
 
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| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
| Throughout of the Treatment Period | 
 
 
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| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis |  No  | 
| E.6.2 | Prophylaxis |  No  | 
| E.6.3 | Therapy |  No  | 
| E.6.4 | Safety |  Yes  | 
| E.6.5 | Efficacy |  Yes  | 
| E.6.6 | Pharmacokinetic |  Yes  | 
| E.6.7 | Pharmacodynamic |  No  | 
| E.6.8 | Bioequivalence |  No  | 
| E.6.9 | Dose response |  No  | 
| E.6.10 | Pharmacogenetic |  Yes  | 
| 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) |  Yes  | 
| E.7.3 | Therapeutic confirmatory (Phase III) |  No  | 
| E.7.4 | Therapeutic use (Phase IV) |  No  | 
| E.8 Design of the trial | 
| E.8.1 | Controlled |  Yes  | 
| E.8.1.1 | Randomised |  Yes  | 
| E.8.1.2 | Open |  No  | 
| E.8.1.3 | Single blind |  No  | 
| E.8.1.4 | Double blind  |  Yes  | 
| E.8.1.5 | Parallel group |  No  | 
| E.8.1.6 | Cross over  |  Yes  | 
| 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  |  Yes  | 
| E.8.2.3 | Other |  No  | 
| E.8.2.4 | Number of treatment arms in the trial | 4 | 
| E.8.3 | 
                                The trial involves single site in the Member State concerned
                             |  Yes  | 
| E.8.4 |  The trial involves multiple sites in the Member State concerned  |  No  | 
| 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 |  Yes  | 
| 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
                     | 
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| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 0 | 
| E.8.9.1 | In the Member State concerned months | 9 | 
| E.8.9.1 | In the Member State concerned days | 0 | 
| E.8.9.2 | In all countries concerned by the trial years | 0 | 
| E.8.9.2 | In all countries concerned by the trial months | 9 | 
| E.8.9.2 | In all countries concerned by the trial days | 0 |