- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT00849563
Effect of Type 2 Diabetes Genetic Risk Information on Health Behaviors and Outcomes (TDE)
Studieoversigt
Status
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
One thousand outpatients will be enrolled over two years at two university-affiliated primary care clinics. Patients will be assigned to one of three study arms: those who want genetic testing for diabetes risk will be randomly assigned to either receive the testing in addition to the SRA (SRA+G) or to receive the SRA only (SRA-only). Those who do not wish to have genetic testing will receive the SRA only. All patients will be surveyed at baseline, immediately after going through the SRA (risk-counseling visit; 2-4 weeks after initial visit), at 3 months post risk counseling visit and at 12 months post risk counseling visit. BMI, waist circumference, fasting plasma glucose and insulin will be measured at baseline and 12 months. Surveys will allow us to track patients' emotional responses to diabetes risk information and changing perceptions of personal risk for Type 2 diabetes over time, and to see if these correlate with subsequent diet and exercise behaviors.
We will use a linear model to assess the effects of genetic testing among the three study groups, using HOmeostasis Model Assessment of Insulin Resistance (HOMA-IR) and weight loss as the primary outcomes. We will use generalized linear ordinal regression models to fit the ordinal survey outcomes of risk perceptions to the continuous HOMA-IR and weight outcome variables.
Undersøgelsestype
Tilmelding (Faktiske)
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
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-
North Carolina
-
Durham, North Carolina, Forenede Stater, 27705
- Duke Family Medicine at Pickens
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Durham, North Carolina, Forenede Stater, 27705
- Duke Health Center at Pickett Rd
-
-
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Are male or female outpatients
- No self-reported history of diabetes
- No self-reported history of prior genetic testing for diabetes
- Not pregnant (self report)
- Are ≥18 and <81 years of age
- Scheduled to receive serum glucose test in participating clinic
- Fasting at time of blood draw (no food or drink - except water - previous 8 hours: self report)
- Able and willing to give legally effective consent
- Able and willing to participate in patient questionnaires
- Ambulatory
Exclusion Criteria:
- Previously or currently taking medications for lowering glucose (i.e., exenatide, pramlintide, metformin, rosiglitazone, pioglitazone, or future diabetes drugs) based on self-report and/or prescreening
- Self-report of current or prior diabetes diagnosis
- Self-reported prior history of genetic testing for diabetes
- Baseline serum glucose test result >125
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Forebyggelse
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Enkelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
|
Aktiv komparator: SRA+genetic test
patients randomized to receive genetic test for type 2 diabetes risk will be followed and surveyed and will be counseled based on SAR and genetic risk for type 2 diabetes
|
patients interested in genetic testing will be randomly assigned to either get testing for type 2 diabetes or not.
All arms with receive standardized risk asessements.
This study is evaluating behavior after receipt of genetic risk information and different types of counseling.
|
|
Ingen indgriben: SRA only
Patients randomized to not get genetic testing will be followed and surveyed and will be counseled based on SRA only
|
|
|
Ingen indgriben: no testing control
Patients not interested in genetic testing will be followed and surveyed.
Counseling will be based on SRA only
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
Percentage of weight loss
Tidsramme: 12 months
|
12 months
|
Sekundære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
Change in perceptions of personal risk for Type 2 diabetes
Tidsramme: 12 months
|
12 months
|
|
Change in HOmeostasis Model Assessment of Insulin Resistance (HOMA-IR)
Tidsramme: 12 months
|
12 months
|
Samarbejdspartnere og efterforskere
Sponsor
Samarbejdspartnere
Efterforskere
- Ledende efterforsker: Geoffrey Ginsburg, Md, PhD, Institute for Genome Sciences and Policy, Duke University
- Ledende efterforsker: Alex Cho, MD, Institute for Genome Sciences and Policy, Duke University
- Ledende efterforsker: Scott Joy, MD, Duke University
- Ledende efterforsker: Susanne Haga, PhD, Institute for Genome Sciences and Policy, Duke University
- Ledende efterforsker: Isaac Lipkus, PhD, Institute for Genome Sciences and Policy, Duke University
- Ledende efterforsker: Gloria Trujillo, MD, Duke University
- Ledende efterforsker: Julianne O'Daniel, PhD, Institute for Genome Sciences and Policy, Duke University
Publikationer og nyttige links
Generelle publikationer
- Waxler JL, O'Brien KE, Delahanty LM, Meigs JB, Florez JC, Park ER, Pober BR, Grant RW. Genetic counseling as a tool for type 2 diabetes prevention: a genetic counseling framework for common polygenetic disorders. J Genet Couns. 2012 Oct;21(5):684-91. doi: 10.1007/s10897-012-9486-x.
- Cho AH, Killeya-Jones LA, O'Daniel JM, Kawamoto K, Gallagher P, Haga S, Lucas JE, Trujillo GM, Joy SV, Ginsburg GS. Effect of genetic testing for risk of type 2 diabetes mellitus on health behaviors and outcomes: study rationale, development and design. BMC Health Serv Res. 2012 Jan 18;12:16. doi: 10.1186/1472-6963-12-16.
Datoer for undersøgelser
Studer store datoer
Studiestart
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- Pro00011592
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