Status: Finalised
First registered on:
25/05/2012
Last updated on:
17/08/2016
1. Study identification
EU PAS Register NumberEUPAS2612
Official titleThe risk of developing prostate cancer in entacapone and levodopa/DDCI users compared to levodopa/DDCI users without entacapone - A nation-wide retrospective register-based study
Study title acronym
Study typeObservational study
Brief description of the studyThe purpose of the study is to evaluate whether treatment with entacapone as add-on to levodopa/DDCI increases the risk of developing prostate cancer when comparing to treatment without entacapone as add-on to levodopa/DDCI among male PD patients in Finland.
Was this study requested by a regulator?Yes: United States
Is the study required by a Risk Management Plan (RMP)?
EU RMP category 3 (required)
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
Department/Research group
Organisation/affiliationEPID Research Oy
Details of (Primary) lead investigator
Title Dr
Last name Korhonen
First name Pasi
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
Finland
3. Study timelines: initial administrative steps, progress reports and final report
PlannedActual
Date when funding contract was signed01/02/201121/02/2011
Start date of data collection16/05/201101/12/2011
Start date of data analysis
Date of interim report, if expected
Date of final study report31/10/201225/06/2013
4. Sources of funding
Please provide estimates of the percentage of funding by source for this study
Names(s)Approximate % funding
Pharmaceutical companiesOrion Corporation Orion Pharma100
Charities
Government body
Research councils
EU funding scheme
5. Contact details for enquiries
Scientific Enquiries
Title Dr
Last name Korhonen
First name Pasi
Address line 1EPID Research Oy
Address line 2Metsänneidonkuja 12
Address line 3
CityEspoo
Postcode02130
CountryFinland
Phone number (incl. country code)358-50-3652990
Alternative phone number
Fax number (incl. country code)
Public Enquiries
Title Dr
Last name Korhonen
First name Pasi
Address line 1EPID Research Oy
Address line 2Metsänneidonkuja 12
Address line 3
CityEspoo
Postcode02130
CountryFinland
Phone number (incl. country code)358-50-3652990
Alternative phone number
Fax number (incl. country code)
6. Study drug(s) information
Substance class (ATC Code)N04BA03 (levodopa, decarboxylase inhibitor and COMT inhibitor)
Substance class (ATC Code)N04BX02 (entacapone)
7. Medical conditions to be studied
Medical condition(s)Yes
Parkinson's disease
8. Population under study
Age
Adolescents (12 - 17 years)
Adults (18 - 44 years)
Adults (45 - 64 years)
Adults (65 - 74 years)
Adults (75 years and over)
Sex
Male
9. Number of subjects
Estimated total number of subjects16000
10. Source of data
Is this study being carried out with an established data source?Yes
Data sources not registered with ENCePP
Prescription Register, Finland
Registry for Reimbursed Medications, Finland
Cancer Register, Finland
Causes of Death Register, Finland
Sources of data
Administrative database, e.g. claims database
Pharmacy dispensing records
11. Scope of the study
What is the scope of the study?
Risk assessment
Primary scope : Risk assessment
12. Main objective(s)
What is the main objective of the study?
The primary objective of this study is to compare the incidence rates of developing prostate cancer between group 1 and group 2 where
group 1 = treatment with levodopa/DDCI with entacapone +/- DA and/or MAO-B inhibitor, and
group 2 = treatment with levodopa /DDCI without entacapone +/- DA and/or MAO-B inhibitor.
Are there primary outcomes?Yes
Time from the start of follow-up to the first prostate cancer detected.
Are there secondary outcomes?Yes
Time from the start of follow-up to death caused by prostate cancer.
13. Study design
What is the design of the study?
Cohort study
Retrospective cohort study
14. Follow-up of patients
Will patients be followed up?Yes
Please describe duration of follow up
The follow-up starts from the date of a new prescription of entacapone or another add-on therapy to levodopa/DDCI or add-on levodopa/DDCI to DA or add-on levodopa/DDCI to MAO-B inhibitor or add-on levodopa/DDCI to the combination of DA and MAO-B inhibitor during 1998-2009. The follow-up ends at date of prostate cancer diagnosis, death or end of study period (31-12-2009) whichever comes first.
15. Data analysis plan
Please provide a brief summary of the analysis method
Comparisons between the treatment groups will be performed by means of hazard ratios (HRs). The HR estimates with 95% CIs will be estimated using the conventional Cox’s proportional hazards model with adjustments for relevant baseline variables and time-dependent variables. The following variables will be considered as potential confounders in these analyses: age group, time since PD diagnosis, PD and BHP treatment history, hospital district, concurrent use of BHP treatments (e.g. finasteride), duration of earlier levodopa/DDCI treatment, and recent changes in PD add-on treatments.
16. ENCePP seal
Are you requesting the ENCePP seal for this study?
No
17. Full protocol
Not submitted
18. Study Results
Please list the 5 most relevant publications using data from your study
ReferenceLink to web-publication
19. Other relevant documents
Conflict(s) of interest of
investigator(s)Not submitted
Composition of Steering Group and
ObserversNot submitted
Other documents
DescriptionDocumentLatest version
Signed Code of
Conduct Checklist
Submitted
Signed Code of Conduct Declaration
Submitted
Signed Checklist for Study
Protocols
Submitted
