Status: Ongoing
First registered on:
04/07/2023
Last updated on:
28/08/2023
1. Study identification
EU PAS Register NumberEUPAS105641
Official titleDARWIN EU® CC - Drug utilization study of prescription opioids
Study title acronym
Study typeObservational study
Brief description of the studyPrescription opioids, while effective for managing severe pain, have led to a public health crisis due to misuse, addiction, and overdose, particularly in the US. Recently, concerns have been growing in Europe due to increasing opioid use and related mortality. Factors such as chronic pain, mental health disorders, and advanced age can exacerbate misuse and the development of dependence. Given the potential for global spread of this issue, enhanced surveillance and in-depth research into opioid utilization patterns are imperative. A drug utilization study using a Common Data Model (CDM) is a promising approach to supplement European opioid monitoring systems, providing more granular data to inform evidence-based decisions on this complex topic. The European Medicines Agency commissioned this DARWIN EU© CC study to:
(i) To investigate the annual incidence and annual period prevalence of use of opioids (overall, active drug substance, strength (weak/strong opioids) and route (oral, transdermal or parenteral)), stratified by calendar year, age, sex and country/database during the study period 2012-2022.
(ii) To determine duration of prescription opioid use, as well as characteristics of new users and indication for opioid prescribing/dispensing, all stratified by calendar year and country/database.
Was this study requested by a regulator?Yes: EMA
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 applicable
2. Research centres and Investigator details
Coordinating study entity
Centre nameDARWIN EU® CC
Centre locationRotterdam, the Netherlands
Details of (Primary) lead investigator
Title Dr
Last name Jodicke
First name Annika
Is this study being carried out with the collaboration of a research network?
Yes
Other centres where this study is being conducted
Multiple centres
In total how many centres are involved in this Study?6
Estonian Biobank, Estonia
Clinical Data Warehouse of Bordeaux University Hospital (CHUBX), France
Auria Clinical Informatics VARHA (ACI Varha), Finland
Countries in which this study is being conducted
International study
Belgium
Estonia
Finland
France
Germany
Netherlands
Spain
3. Study timelines: initial administrative steps, progress reports and final report
PlannedActual
Date when funding contract was signed30/03/202330/03/2023
Start date of data collection01/01/201201/01/2012
Start date of data analysis
Date of interim report, if expected
Date of final study report01/11/2023
4. Sources of funding
Please provide estimates of the percentage of funding by source for this study
Names(s)Approximate % funding
Pharmaceutical companies
Charities
Government bodyEMA100
Research councils
EU funding scheme
5. Contact details for enquiries
Scientific Enquiries
Title Dr
Last name Jodicke
First name Annika
Address line 1University of Oxford
Address line 2Windmill Road
Address line 3Headington
CityOxford
Postcode
CountryUnited Kingdom
Phone number (incl. country code)31107043050
Alternative phone number
Fax number (incl. country code)
Public Enquiries
Title Mrs
Last name Schuemie
First name Ilse
Address line 1Dr. Molewaterplein 40
Address line 2
Address line 3
CityRotterdam
Postcode
CountryNetherlands
Phone number (incl. country code)31107043050
Alternative phone number
Fax number (incl. country code)
6. Study drug(s) information
Substance class (ATC Code)N01AH (Opioid anesthetics)
Substance class (ATC Code)N02A (Other opioids)
Substance class (ATC Code)R05DA (Opium alkaloids and derivatives)
Single-Constituent (Substance INN)Naloxone
Multi-Constituent (Substance INN(s))Naloxone
Oxycodone
Buprenorphine
Pentazocine
Tilidine
7. Medical conditions to be studied
Medical condition(s)No
8. Population under study
Age
Infants and toddlers (28 days - 23 months)
Children (2 - 11 years)
Adolescents (12 - 17 years)
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 subjects19000000
10. Source of data
Is this study being carried out with an established data source?Yes
Data sources registered with ENCePP
Data sources not registered with ENCePP
Bordeaux University Hospital (CHUBX), France
IQVIA LBD Belgium, Belgium
IQVIA DA Germany, Germany
Auria Clinical Informatics VARHA (ACI VARHA), Finland
Estonian Biobank, Estonia
Sources of data
Routine primary care electronic patient registry
Hospital data (CHUBX) and biobank data (Estonian Biobank)
11. Scope of the study
What is the scope of the study?
Drug utilisation study
Primary scope : Drug utilisation study
12. Main objective(s)
What is the main objective of the study?
(i) To investigate the annual incidence and annual period prevalence of use of opioids stratified by calendar year, age, sex and country/database during the study period 2012-2022.
(ii) To determine duration of prescription opioid use, as well as characteristics of new users and indication for opioid prescribing/dispensing, all stratified by calendar year and country/database.
Are there primary outcomes?No
Are there secondary outcomes?No
13. Study design
What is the design of the study?
Drug utilisation study
14. Follow-up of patients
Will patients be followed up?Yes
Please describe duration of follow up
Follow-up will start on a pre-specified calendar time point, namely1st of January for each calendar year between 2012-2022 for the calculation of annual incidence/prevalence rates.
End of follow-up will be defined as the earliest of loss to follow-up, end of data availability, death, or end of study period (e.g. 31st December 2022), whatever comes first.
15. Data analysis plan
Please provide a brief summary of the analysis method
Population-level opioid use: Annual period prevalence of opioid use and annual incidence rates per 100,000 person years will be estimated.
Patient-level opioid use: Large-scale patient-level characterization will be conducted at index date, including patient demographics, and history of comorbidities and comedication. Frequency of indication at index date, and in the immediate time before will be calculated. Cumulative treatment duration will be estimated for the first treatment era and the minimum, p25, median, p75, and maximum will be provided.
For all analyses a minimum cell count of 5 will be used when reporting results, with any smaller counts will be noted as <5.
16. ENCePP seal
Are you requesting the ENCePP seal for this study?
No
17. Full protocol
18. Study Results
Not submitted
Please list the 5 most relevant publications using data from your study
ReferenceLink to web-publication
None
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
