Status: Ongoing
First registered on:
03/07/2018
Last updated on:
16/12/2019
1. Study identification
EU PAS Register NumberEUPAS24718
Official titleObservatory of TTR-related amyloidosis and of patients treated with Vyndaqel(r)
Study title acronymOBSAMYL
Study typeObservational study
Brief description of the studyTTR-related amyloidosis is a systemic trouble in which extracellular transthyretin deposits aggregate in organs and tissues.
In hereditary TTR-related amyloidosis, more than 100 gene mutations on transthyretin gene have been identified to be responsible for symptoms such as nerve and neurological peripheral damages.
Two main phenotypic forms are encountered: transthyretin familial amyloid polyneuropathy (TTR-FAP) which is an autosomal dominant hereditary disease and transthyretin familial amyloid cardiomyopathy (TTR-FAC), occurring in 80% of patients with TTR-FAP.
Prevalence of these two conditions are not well-known: TTR-FAP was estimated at 1/1.106 in general population whereas the French national registry has recorded 482 patients from 1989 to 2014. For TTR-FAC, there is a lack of epidemiological data.
TTR-related amyloidosis also includes senile amyloidosis occurring predominantly in men aged over 60 years, in which amyloid deposits are derived from wild transthyretin. Prevalence of WT-TTR in the general population is not known either.
Vyndaqel® (tafamidis) is a TTR tetramer stabilizer authorized in the EU market since 2012, for the treatment of TTR-FAP in stage 1 to delay neurologic peripheral impairment and is actually under clinical study for TTR-cardiomyopathy (senile amyloidosis + TTR-FAC). In the Transparency Committee's opinion of 2012, the medical value of Vyndaqel® was considered moderate and added medical value was considered minor. In this report, 200 patients were estimated eligible to receive Vyndaqel®.
As part of the five-yearly renewal of tafamidis on the list of reimbursable products, its target population and modalities of use need to be assessed in 'real life’. Thus, Pfizer aims to conduct a real-life study to provide new data regarding TTR-amyloidosis and tafamidis use. This epidemiological study will rely on the French amyloidosis network.
fr
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 applicable
2. Research centres and Investigator details
Coordinating study entity
Department/Research groupKappa Santé
Organisation/affiliationKappa Santé
Details of (Primary) lead investigator
Title Dr
Last name DEMARCQ
First name Olivier
Is this study being carried out with the collaboration of a research network?
No
Other centres where this study is being conducted
Multiple centres
In total how many centres are involved in this Study?30
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 signed01/07/201801/11/2018
Start date of data collection16/07/201821/08/2018
Start date of data analysis14/12/201814/01/2019
Date of interim report, if expected10/01/201920/02/2019
Date of final study report31/01/2019
4. Sources of funding
Please provide estimates of the percentage of funding by source for this study
Names(s)Approximate % funding
Pharmaceutical companiesPfizer100
Charities
Government body
Research councils
EU funding scheme
5. Contact details for enquiries
Scientific Enquiries
Title Dr
Last name DEMARCQ
First name Olivier
Address line 123-25 Avenue du Dr Lannelongue
Address line 2
Address line 3
CityParis
Postcode75014
CountryFrance
Phone number (incl. country code)0033144827474
Alternative phone number
Fax number (incl. country code)
Public Enquiries
Title Mrs
Last name SABIN
First name Bénédicte
Address line 14 rue de Cléry
Address line 2
Address line 3
City75002
Postcode
CountryFrance
Phone number (incl. country code)0614431702
Alternative phone number
Fax number (incl. country code)
6. Study drug(s) information
Single-Constituent (Substance INN)TAFAMIDIS
7. Medical conditions to be studied
Medical condition(s)Yes
Hereditary neuropathic amyloidosis
Amyloidosis senile
Cardiac amyloidosis
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 subjects1300
Additional information
1000 patients estimated in the "census group" and 300 in the "tafamidis group"
10. Source of data
Is this study being carried out with an established data source?No
Sources of data
Routine primary care electronic patient registry
This study is a secondary data colleciton study where data collected are expected to be found mainly in patients medical records as well as in other tools used in each site as competence and reference centers of the disease.
11. Scope of the study
What is the scope of the study?
Disease epidemiology
Drug utilisation study
Effectiveness evaluation
Primary scope : Disease epidemiology
12. Main objective(s)
What is the main objective of the study?
1) To estimate the number of alive patients diagnosed with TTR-related amyloidosis (hereditary and senile) in France on 1st June 2017, globally, by stage of the disease, and type of mutation if applicable
2) To evaluate, in a real-life setting, modalities of tafamidis use, its safety and effectiveness profile for patients who have received tafamidis in France whether or not they are still alive
Are there primary outcomes?Yes
- Estimation of all cases of TTR-related amyloidosis (hereditary and senile) patients (census population) : defined in the study as the total number of patients with TTR-related amyloidosis, alive on 1st June 2017 and diagnosed in participating centers providing care for TTR-related amyloidosis.
- Description of modalities of tafamidis use, and its safety and effectiveness profile
Are there secondary outcomes?Yes
- Description of the patient's family potentially carrying a pathogenic TTR mutation (census population except for senile amyloidosis)
- Time between first symptom(s) and diagnosis
- Estimation of the number of patients with pathogenic TTR mutations
13. Study design
What is the design of the study?
Cross-sectional study
restrospective, secondary data collection study
14. Follow-up of patients
Will patients be followed up?Not applicable/no follow-up
15. Data analysis plan
Please provide a brief summary of the analysis method
Statistical analyses will be explorative and descriptive nature.
The analysis will be conducted using SAS (version 9.4 or higher, SAS Institute, North Carolina USA).
All CRF parameters and evaluation criteria will be summarized using descriptive statistics:
−Sample size, mean, standard deviation, minimum, median, Q1, Q3, maximum, 95% CI and number of missing data for continuous variables;
−Frequency and percentage for each category, 95% CI and number of missing data for discrete variables.
16. ENCePP seal
Are you requesting the ENCePP seal for this study?
No
17. Full protocol
Available when the study ends
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 documents
DescriptionDocumentLatest version
Signed Code of
Conduct Checklist
Not submitted
Signed Code of Conduct Declaration
Not submitted
Signed Checklist for Study
Protocols
Submitted
