- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT01970969
THE GIRAFFE Study: Genomic Risk Markers for Atrial Fibrillation Following Extended Cardiac Rhythm Monitoring (GIRAFFE)
16. april 2018 oppdatert av: Scripps Translational Science Institute
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.
Our primary hypothesis is that a risk score comprised of approximately 10 single nucleotide polymorphisms (SNPs) that are associated with atrial fibrillation at the Genome Wide Association Study (GWAS) level is associated with the development of atrial fibrillation among previously undiagnosed patients at high risk for atrial fibrillation.
A current example of these SNPs is shown in Table 1.
As a secondary hypothesis, we will test the association between atrial fibrillation diagnosed in this study with a subset of SNPs reported to be associated with atrial fibrillation and with fine-mapping SNPs.
We will also test the association between atrial fibrillation of less than and greater than 30 seconds and a panel of approximately 10 SNPs.
Studieoversikt
Status
Fullført
Studietype
Observasjonsmessig
Registrering (Faktiske)
928
Kontakter og plasseringer
Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.
Studiesteder
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California
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La Jolla, California, Forente stater, 92037
- Scripps Clinic
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Deltakelseskriterier
Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
18 år og eldre (Voksen, Eldre voksen)
Tar imot friske frivillige
Nei
Kjønn som er kvalifisert for studier
Alle
Prøvetakingsmetode
Ikke-sannsynlighetsprøve
Studiepopulasjon
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].
Beskrivelse
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.
Studieplan
Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.
Hvordan er studiet utformet?
Designdetaljer
Kohorter og intervensjoner
Gruppe / Kohort |
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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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Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
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Association between events of Atrial Fibrillation and 4-SNP risk score
Tidsramme: 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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Samarbeidspartnere og etterforskere
Det er her du vil finne personer og organisasjoner som er involvert i denne studien.
Samarbeidspartnere
Publikasjoner og nyttige lenker
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Studierekorddatoer
Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.
Studer hoveddatoer
Studiestart
1. september 2013
Primær fullføring (Faktiske)
1. desember 2016
Studiet fullført (Faktiske)
1. desember 2017
Datoer for studieregistrering
Først innsendt
8. oktober 2013
Først innsendt som oppfylte QC-kriteriene
22. oktober 2013
Først lagt ut (Anslag)
28. oktober 2013
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
17. april 2018
Siste oppdatering sendt inn som oppfylte QC-kriteriene
16. april 2018
Sist bekreftet
1. april 2018
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- 13-6159
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