Population Clinical Trial
— VARIETEOfficial title:
An Open, Prospective, National, Multicenter, Non Randomised, Study Based on Healthy Volunteers for Establishing Normative Data for IGF1 in the General Population
Various assays can be used for IGF-I measurement in French laboratories. Unfortunately, each
assay gives a very different result for the same sample. As IGF-I also varies with age, it
is necessary to establish a broad population reference values of IGF1 concentration for each
of the IGF1 assays used in clinical practice, taking into account individual variation
factors such as age, nutritional status and possible treatments.
The objective of this study is to establish normative data based on a large random selection
from the general population, including representation from all age groups (around 100
subjects for each decade age range). This will be performed for all the available assay
kits. Subjects with medical conditions and medications that may affect the outcome will be
excluded. Normative data will include the range (2.5 to 97.5 percentiles) in mass units and
results will be reported as mass units but also as SD scores in order to be able, in a given
patient, to compare its IGF-I concentration along time, even if using different assays.
Status | Completed |
Enrollment | 924 |
Est. completion date | April 2012 |
Est. primary completion date | April 2012 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Both |
Age group | 18 Years to 89 Years |
Eligibility |
Inclusion Criteria: - Male or female 18 to 89 years old (18 years = age = 89 years) - Consent given by the patient - No history of : thyroid disease, liver disease or kidney disease or metabolic endocrine disease cardiovascular or pulmonary disease, neoplastic disease, gastroenterological disease (malabsorption, parasites, chronic diarrhea, peptic disease), psychiatric illness, epilepsy. - No medication that can interfere with the concentration of IGF1: steroids, anti-androgens, distal diuretics, anti-estrogens, enzyme inducers (rifampin, rifabutin, phenobarbital, phenytoin, carbamazepine, herbal St. John's wort, efavirenz, nevirapine, griseofulvin , OP'DDD, mitotane). - No intercurrent illness in the week preceding the inclusion - No known chronic infectious disease (BVH, CVH, HIV) - No active smoking - Weight/height2 (BMI) less than 28 kg/m2 and greater than 19 kg/m2 - Normal clinical examination - Normal blood pressure: children under 65 years (100 mm Hg <SBP <140 mmHg, 50 mmHg <PAD <90 mmHg) for over 65 years (100 mm Hg <SBP <150 mmHg, 50 mmHg <SBP <90mmHg ) Exclusion Criteria: - Uncontrolled intercurrent illness - Pregnant or lactating woman - Excess alcohol consumption: more than 50 g/24h of chronic or acute or unable to restraint from consuming alcohol - Susceptible to use drugs - Donated blood in the 3 months preceding the study - Blood transfusion in the 3 months preceding the test - Exclusion period of a previous experimental trial. - Fasting extended by several days. - Patient not affiliated to a social security system (is or should be beneficiary) |
Endpoint Classification: Bio-availability Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Health Services Research
Country | Name | City | State |
---|---|---|---|
France | Assistance Publique - Hôpitaux de Paris | Le KREMLIN-BICETRE |
Lead Sponsor | Collaborator |
---|---|
Assistance Publique - Hôpitaux de Paris |
France,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Concentration of IGF1 in serum | Establishment of reference values for the concentration of IGF1 in the general adult population for each of the assays of IGF1 used in clinical practice, taking into account individual variation factors such as age, nutritional status and potential treatments. | up to 4 hours | No |
Secondary | Development of an expression results in Z-score for all assays to overcome the differences related to different immunoassays. | up to 4 hours | No | |
Secondary | Establishment of a bank of frozen sera to further develop these standards | up to 4 hours | No |
Status | Clinical Trial | Phase | |
---|---|---|---|
Not yet recruiting |
NCT06093178 -
Assessing the Feasibility of a Coach-led Digital Platform
|