Status: Finalised
First registered on:
04/04/2016
Last updated on:
18/11/2022
1. Study identification
EU PAS Register NumberEUPAS13017
Official titleReal-life anticoagulants comparative benefit-risk in nonvalvular atrial fibrillation (NVAF) in France
Study title acronymENGEL 2
Study typeOther: Study using the French health insurance and hospital-discharge database
Brief description of the studyThe research question is to compare the 1-year and long-term benefit-risk between each of direct oral anticoagulant (DOAC) (Pradaxa®, Xarelto®) vs vitamin K (VKA) for new users in nonvalvular atrial fibrillation (NVAF). The main objective is to compare the 1-year risk of major bleeding, stroke and systemic embolism (SSE) (prior named “arterial thrombotic events” as in the protocol and the study report “One-year of follow-up”), myocardial infarction (MI) and death for each DOAC (dabigatran, rivaroxaban) vs VKA in NVAF during drug exposure. The secondary objectives are to compare healthcare resources use and their related costs during drug exposure on the 1-year of follow-up, and the long-term risk (2 and 3-year) of the same outcomes for each DOAC vs VKA and for dabigatran vs rivaroxaban according to the initial DOAC doses. This is a cohort study in the French natiowide claims database including new users of DOAC or VKA in NVAF in 2013 with a follow-up until 31 December 2016, and 3 years history. The index date will be that of the first dispensing of DOAC or VKA in 2013. Data will be extracted from 2010 to 2016. Outcomes analysis will be performed during drug exposure for matched patients on high-dimensional propensity score (hdPS), and all patients with hdPS adjustment.
Was this study requested by a regulator?Yes: France
Is the study required by a Risk Management Plan (RMP)?
Not applicable
Regulatory procedure number (RMP Category 1 and 2 studies only)
Other study registration identification numbers and URLs as applicableClinicalTrial.gov: NCT02785354
2. Research centres and Investigator details
Coordinating study entity
Department/Research grouppharmacoepidemiology
Organisation/affiliationUniversity of Bordeaux
Details of (Primary) lead investigator
Title Professor
Last name Moore
First name Nicholas
Is this study being carried out with the collaboration of a research network?
No
Other centres where this study is being conducted
Not applicable (single centre)
Countries in which this study is being conducted
National study
France
3. Study timelines: initial administrative steps, progress reports and final report
PlannedActual
Date when funding contract was signed19/12/2014
Start date of data collection05/04/2016
Start date of data analysis25/04/2016
Date of interim report, if expected25/10/2018
Date of final study report31/10/201920/12/2019
4. Sources of funding
Please provide estimates of the percentage of funding by source for this study
Names(s)Approximate % funding
Pharmaceutical companiesBoehringer Ingelheim France100
Charities
Government body
Research councils
EU funding scheme
5. Contact details for enquiries
Scientific Enquiries
Title Dr
Last name Blin
First name Patrick
Address line 1146 Rue Leo Saignat
Address line 2
Address line 3
CityBordeaux
Postcode
CountryFrance
Phone number (incl. country code)33557574675
Alternative phone number
Fax number (incl. country code)
Public Enquiries
Title Dr
Last name Blin
First name Patrick
Address line 1146 Rue Leo Saignat
Address line 2
Address line 3
CityBordeaux
Postcode
CountryFrance
Phone number (incl. country code)33557574675
Alternative phone number
Fax number (incl. country code)
6. Study drug(s) information
Substance class (ATC Code)B01AA (Vitamin K antagonists)
Substance class (ATC Code)B01AE07 (dabigatran etexilate)
Substance class (ATC Code)B01AF01 (rivaroxaban)
7. Medical conditions to be studied
Medical condition(s)Yes
Atrial fibrillation
8. Population under study
Age
Adults (18 - 44 years)
Adults (45 - 64 years)
Adults (65 - 74 years)
Adults (75 years and over)
Sex
Male
Female
9. Number of subjects
Estimated total number of subjects150000
10. Source of data
Is this study being carried out with an established data source?Yes
Data sources not registered with ENCePP
SNIIRAM, National Healthcare insurance and hospital-discharge summary database, France
Sources of data
Administrative database, e.g. claims database
11. Scope of the study
What is the scope of the study?
Disease epidemiology
Risk assessment
Drug utilisation study
Effectiveness evaluation
Primary scope : Risk assessment
12. Main objective(s)
What is the main objective of the study?
The main objective is to compare the one-year risk of major bleeding, risk of stroke and systemic embolism (SSE), risk of myocardial infarction (MI) and risk of death for each DOAC (Pradaxa®, Xarelto®) versus VKA in NVAF during drug exposure.
Are there primary outcomes?Yes
Clinically relevant bleeding (CRB) as a hospitalisation with primary diagnosis of haemorrhagic stroke, or other critical organ or site bleeding, or other bleedings; SSE as a hospitalisation of ischemic/undefined stroke or systemic arterial embolism; Acute coronary syndrome (ACS) as a hospitalisation of MI or unstable angina; All-cause of death; Composite criterion of CRB/SSE/ACS/death.
Are there secondary outcomes?Yes
To compare the long-term risk (2-year and 3-year) of outcomes for each DOAC (Pradaxa®, Xarelto®) versus VKA and for Pradaxa® versus Xarelto® according to the initial dose (standard or reduced dose), drugs use (exposure duration, number of dispensations, medication possession ratio, withdrawal and switch); Healthcare resources use and their related costs on the 1-year of follow-up.
13. Study design
What is the design of the study?
Cohort study
14. Follow-up of patients
Will patients be followed up?Yes
Please describe duration of follow up
The follow-up period start on the date of the first dispensation of DOAC or VKA in 2013 and end 31 December 2016.
15. Data analysis plan
Please provide a brief summary of the analysis method
Statistical analysis will be carried out according to a documented and approved Statistical Analysis Plan (SAP). The SAP describes statistical analysis as foreseen at the time of planning study. Statistical analysis will be performed after database lock using SAS® software. Blind double programming will be used for the main outcome measures.
Primary outcomes will be analysed using survival methods: Kaplan Meier estimate and cumulative incidence function estimate for cumulative incidence of clinical outcomes, Cox proportional hazard risk model and Fine and Gray model to compare incidence of each outcome between treatment groups, for hdPS matched patients, and all patients with hdPS adjustment.
The analysis of healthcare costs during the drug exposure will be performed as an “intent-to-treat” analysis on the 1-year follow-up period. Costs will be estimated according to treatment group from national health insurance and collective perspectives.
16. ENCePP seal
Are you requesting the ENCePP seal for this study?
No
17. Full protocol
Not submitted
18. Study Results
Not submitted
Please list the 5 most relevant publications using data from your study
ReferenceLink to web-publication
Comparative Real-Life Effectiveness and Safety of Dabigatran or Rivaroxaban vs. Vitamin K Antagonists: A High-Dimensional Propensity Score Matched New Users Cohort Study in the French National Healthcare Data System SNDS.
Blin P, Dureau-Pournin C, Bénichou J, Cottin Y, Mismetti P, Abouelfath A, Lassalle R, Droz C, Moore N.
Am J Cardiovasc Drugs. 2019 Jun 29. doi: 10.1007/s40256-019-00359-z.https://doi.org/10.1007/s40256-019-00359-z
Effectiveness and safety of 110 or 150 mg dabigatran vs. vitamin K antagonists in nonvalvular atrial fibrillation
Blin P, Dureau-Pournin C, Cottin Y, Bénichou J, Mismetti P, Abouelfath A, Lassalle R, Droz C, Moore N.
Br J Clin Pharmacol. 2019 Feb;85(2):432-441. doi: 10.1111/bcp.13815. Epub 2018 Dec 16.https://doi.org/10.1111/bcp.13815
Comparative Effectiveness and Safety of Standard or Reduced Dose Dabigatran vs. Rivaroxaban in Nonvalvular Atrial Fibrillation
Blin P, Dureau-Pournin C, Cottin Y, Bénichou J, Mismetti P, Abouelfath A, Lassalle R, Droz C, Moore N.
Clin Pharmacol Ther. 2018 Nov 30. doi: 10.1002/cpt.1318.https://doi.org/10.1002/cpt.1318
19. Other relevant documents
Conflict(s) of interest of
investigator(s)Not submitted
Composition of Steering Group and
ObserversNot submitted
Other documentsNot
submitted
Signed Code of
Conduct Checklist
Not submitted
Signed Code of Conduct Declaration
Not submitted
Signed Checklist for Study
Protocols
Not submitted
