THE GIRAFFE Study: Genomic Risk Markers for Atrial Fibrillation Following Extended Cardiac Rhythm Monitoring (GIRAFFE)
This Study Will Investigate the Association Between a Set of Single Nucleotide Polymorphisms (SNPs) and Atrial Fibrillation in Patients at High Risk of Developing Atrial Fibrillation. The SNPs Investigated Will Have Been Previously Shown to be Associated With the Atrial Fibrillation.
Studie Overzicht
Toestand
Toestand
Conditie
Conditie
Studietype
Studietype
Inschrijving (Werkelijk)
Inschrijving
Contacten en locaties
Studie Locaties
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California
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La Jolla, California, Verenigde Staten, 92037
- Scripps Clinic
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Deelname Criteria
Geschiktheidscriteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Bemonsteringsmethode
Studie Bevolking
Patients defined, as high risk for atrial fibrillation will be persons with:
- No prior history of atrial fibrillation and/or atrial flutter (AFIB/AF) - with symptoms of high clinical suspicion for AFIB/AF prompting referral for ambulatory cardiac rhythm monitoring to evaluate for potential AFIB/AF, and
- Any of the following features: ischemic stroke with no defined etiology (In prior 6 months) [3, 4, 6, 7], hypertension [33], increased body mass index (BMI >30kg/m2) [33], heart failure [33], clinically significant murmur [33], prolonged PR interval on resting ECG (>200msec) [33], chronic kidney disease [34], hypertrophic cardiomyopathy [35], congenital heart disease [36], chronic obstructive pulmonary disease [37, 38], sleep apnea [39-41], thyroid disease [42, 43], family history of atrial fibrillation [44], diabetes [45] or excess alcohol consumption (Male > 14 drinks/week, Female >7 drinks/week)[46].
Beschrijving
Inclusion Criteria:
- Symptoms of high clinical suspicion for atrial fibrillation prompting referral for ambulatory cardiac rhythm monitoring for potential atrial fibrillation.
AND
- At high risk for atrial fibrillation, defined as any one of the following: ischemic stroke with no defined etiology (In prior 6 months) [3, 4, 6, 7], hypertension [33], increased body mass index (BMI >30kg/m2) [33], heart failure [33], clinically significant murmur [33], prolonged PR interval on resting ECG [33], chronic kidney disease [34], hypertrophic cardiomyopathy [35], congenital heart disease [36], chronic obstructive pulmonary disease [37, 38], sleep apnea [39-41], thyroid disease [42, 43], family history of atrial fibrillation [44], diabetes [45] or excess alcohol consumption (Male > 14 drinks/week, Female >7 drinks/week)[46].
- Age 40 years or older
- Capable of providing informed consent
- Capable of wearing a Zio Patch for up to 14 days
- Capable of providing a blood sample
Exclusion Criteria:
- Previously documented atrial fibrillation or atrial flutter.
- Prior cardiac surgery (coronary artery bypass grafting, valve replacement or repair, pericardial stripping, etc) within the past 30 days.
- Hyperthyroidism.
- Have known skin allergies, conditions, or sensitivities (e.g. allergy to adhesives, psoriasis) as the Zio Patch should not be used on patients with known skin allergies, conditions, or sensitivities.
- Are receiving pacing therapy.
- Are anticipated to receive or require external cardiac defibrillation during the monitoring period.
- Are anticipated to have exposure to high frequency surgical equipment during the monitoring period.
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
Aantal groepen / cohorten
Cohorten en interventies
Groep / CohortGroep / Cohort |
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Cardiac arrhythmia symptoms
All subjects enrolled in the study will have an iRhythm Zio patch placed and a blood sample obtained.
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Wat meet het onderzoek?
Primaire uitkomstmaten
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
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Association between events of Atrial Fibrillation and 4-SNP risk score
Tijdsspanne: One time
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SNP effect sizes and frequencies were determined from the literature and the International HapMap Project database as indicated in Table 1.
Expected occurrences of atrial fibrillation in the two groups were calculated using reference to previous studies as outlined above [7, 8, 33].
We expect 80 atrial fibrillation events in a 650 high-risk patients [48, 49].
Using these event rates and an alpha error of 5%, the power to detect an association between a 10-SNPs risk score and atrial fibrillation is >90%.
The power to detect association between a 4-SNP risk score and atrial fibrillation is >80%.
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One time
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Medewerkers en onderzoekers
Sponsor
Sponsor
Medewerkers
Medewerkers
Publicaties en nuttige links
Studie record data
Bestudeer belangrijke data
Studie start
Studie start
Primaire voltooiing (Werkelijk)
Primaire voltooiing
Studie voltooiing (Werkelijk)
Studie voltooiing
Studieregistratiedata
Eerst ingediend
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Eerst geplaatst
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update geplaatst
Laatste update ingediend die voldeed aan QC-criteria
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
Andere studie-ID-nummers
- 13-6159
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