Atrial FibrillationBEAT-AFibNCT04404465
Health eHeart BEAT-AFib - Health eHeart Biomarkers of Early Atrial Transformation in Atrial Fibrillation
An observational study of Atrial Fibrillation, run by University of California, San Francisco at 1 site in United States.
Trial summary
Atrial fibrillation (also known as AFib or AF) is the most common abnormal heart rhythm and results in an irregular beating of the heart. Currently, there is no way of identifying patients at most risk for the development or progression of AFib or those that will best respond to treatment. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Atrial Fibrillation
- How many people
- 3,000 participants
- Where
- 1 siteUnited States
- Study dates
- 15 Sep 2020to 15 Sep 2040
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Subjects with a diagnosis of AF (i.e. new onset AF, paroxysmal AF, persistent AF, Permanent AF), those undergoing AF ablation or DCCV, those with a PAC greater or equal to 5% PAC burden, those undergoing SVT ablation, subjects with high risk of AF and healthy volunteers at least 18 years of age or older who have been seen at UCSF, who meet the inclusion and exclusion criteria will be eligible for participation in this study.
Who may be able to join
- At least 18 years of age or older
- English speaking
- Able to consent
- ANY one of the following criteria:
- Patients undergoing ablation for AF.
- A history of non-valvular AF or AFL (not due to a reversible cause) documented on ECG or ambulatory monitoring within 1 year of enrollment and not on chronic anti-arrhythmic drugs (AAD).
Show all 17Show fewer
- A history of newly diagnosed persistent AF with documented normal sinus rhythm within 6 months of enrollment and undergoing cardioversion fot AF.
- Two or more of the following criteria if no history of AF:
- Age > 65 years of age
- A diagnosis of hypertension
- A diagnosis of diabetes
- A diagnosis of sleep apnea
- A BMI ≥ 30
- Stable HF with preserved or reduced ejection fraction (NYHA Class I, II or III)
- CKD not requiring dialysis
- More than 5% PAC burden on ambulatory ECG monitoring (e.g. Holter, Ziopatch, Lifewatch, etc.)
- Patients undergoing EP study or ablation for SVT with no history of AF and not meeting any of the above criteria (a-c).
Who cannot join
- Life expectancy < 1 year
- Reversible causes of AF (e.g., post-operative AF, cardiac surgery, pulmonary embolism, untreated hyperthyroidism)
- Pregnant at the time of enrollment
- Unwilling/unable to perform follow-up using digital follow-up
- CKD requiring dialysis
- Presence of a condition or abnormality that, in the opinion of the Investigator, would compromise the safety of the patient or the quality of the data
Show all 11Show fewer
- Patients undergoing active treatment for cancer or diagnosed with cancer requiring treatment in the last 2 years
- Severe Valvular Disease (eg. Rheumatic Heart Disease, Severe Mitral Valve Regurgitation, severe tricuspid regurgitation, severe aortic stenosis, or valve replacements)
- History of organ transplant
- History of any significant congenital heart defect
- Existing Pacemakers and ICDs if not undergoing an ablation
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site
University of California, San Francisco
San Francisco, California, 94143
About this study
Atrial fibrillation (also known as AFib or AF) is the most common abnormal heart rhythm and results in an irregular beating of the heart. Currently, there is no way of identifying patients at most risk for the development or progression of AFib or those that will best respond to treatment. The purpose of this study is to improve our understanding of AFib and to find new ways of identifying those patients most at risk for developing AFib, have progressive AFib or be less responsive to treatment. For this reason, the investigators are studying imaging, blood, and digital markers that may contribute to AFib
Subjects will receive mobile devices (uch as an AliveCor Kardia and a VivaLnk Wearable ECG patch or similar devices) for remote electrocardiographic (ECG) monitoring. Additionally, subjects will use features using a smartphone research app (on the Eureka Research Platform) to monitor other important things such as activity, sleep, heart rate and others as they are developed. All subjects will receive serial blood draws and saliva sample collections once a year. Subjects will also undergo annual imaging in the form of an echocardiogram (Echo). Evaluations will be taken at baseline and once a year for three years from the baseline visit. Additionally, electronic surveys will be administered periodically (eVisits occurring every 3-6 months) using the mobile app.
Read the detailed description
This is a single center, longitudinal, observational cohort study. 3000 subjects are planned to be enrolled. Each subject will be consented, enrolled and assigned to a group based on AF diagnosis (AF Group, AF Risk Group and Control Group). All subjects will be given mobile devices (such as an AliveCor Kardia and a VivaLnk Wearable ECG patch or similar devices) for remote ECG monitoring. Additionally, sleep and activity can be monitored through a smartphone app (on the Eureka Research Platform). All subjects will receive serial blood draws and saliva sample collections to collect serum, plasma, whole blood, DNA and RNA in order to observe/identify any changes in blood-borne AF markers. Subjects will also undergo serial imaging in the form of an Echo to observe/identify markers and/or changes in cardiovascular structure and functioning. Evaluations will be taken at baseline and once a year for three years from their baseline visit. Additionally, electronic surveys will be administered periodically (eVisits occurring every 3-6 months) using the mobile app to observe any changes in participant reported symptoms.
Any participant who receives an AF ablation as part of clinical care will additionally receive one in-person follow-up three months post-ablation procedure and an electronic survey one month post-ablation procedure to observe changes in symptoms after ablation.
Subjects will be followed for at least 3 years. The total duration of the study is expected to be at least 10 years. It is expected that it will take 3-4 years for subject recruitment and at least 3 years for subject follow-up (3 yearly in-person visits), but anticipate the digital follow-up to go beyond that (at least 10 years of digital follow-up)
- Conditions
- Atrial Fibrillation
- Medical subject headings
- Atrial Fibrillation
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| Control Group | Participants undergoing electrophysiologic (EP) study or ablation for supraventricular tachycardia (SVT) with no history of AF and does not meet criteria of At Risk Group or AF Group | |
| At Risk Group | Participants with no prior diagnosis of AF and have: 1. two or more of the following criteria: * Age >65 years of age * A diagnosis of hypertension * A diagnosis of diabetes * A diagnosis of sleep apnea * A body mass index (BMI) ≥30 * Stable heart failure (HF) with preserved or reduced ejection fraction (New York Heart Association Class I, II or III) * Chronic kidney disease (CKD) not requiring dialysis AND/ OR 2. More than 5% premature atrial complex (PAC) burden on ambulatory ECG monitoring (e.g. holter, ZioPatch, Lifewatch, etc.) | |
| AF Group | Participants who have a history of non-valvular AF or Atrial Flutter (AFL) documented on ECG or ambulatory monitoring within 1 year of enrollment |
What is being measured
The primary outcome is the main question the study is designed to answer.
Incident AF [At Risk Group]
Incident AF is defined as the development of a new onset AF in subjects who do not have a previous AF diagnosis. This will be evaluated by detection of arrhythmias by use of ambulatory ECG monitoring (using an VivaLnk Wearable ECG patch and an AliveCor Kardia) and will be diagnosed by an automated algorithm that detects irregularly irregular rhythms. A random 50% of events will be overread by a cardiologist.
Measured: 10 years
Progression of AF [AF Group]
Progression of AF is defined as increase in AF burden which is the amount of time spent in AF over the course of one month as determined by use of ambulatory ECG monitoring (using an VivaLnk Wearable ECG patch and an AliveCor Kardia) and will be diagnosed by an automated algorithm that detects irregularly irregular rhythms. A random 50% of events will be overread by a cardiologist.
Measured: 10 years
Secondary outcomes (2)
Recurrence of AF after treatment with direct current cardioversion (DCCV) or AF ablation [AF Group]
Recurrence of AF will be evaluated by use of ambulatory ECG monitoring (using an VivaLnk Wearable ECG patch and an AliveCor Kardia) and will be diagnosed by an automated algorithm that detects irregularly irregular rhythms. A random 50% of events will be overread by a cardiologist.
Measured: 10 years
Symptom Burden [AF Group]
Symptom Burden will be scored by use of the University of Toronto Atrial Fibrillation Symptom Severity Scale (AFSS) which includes seven questions for subjects to report severity of symptoms (i.e. palpitations, chest pain/discomfort, shortness of breath at rest/physical activity, exercise intolerance, fatigue at rest, and lightheadedness/dizziness) on a Likert scale from 0 (subject did not have this symptom) to 5 (symptom bothers subject a great deal). Total Symptom Burden score is a sum of these seven questions and can range from 0 to 35 with a higher score indicating greater burden.
Measured: 10 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 May 2020
- Study start15 Sep 2020
- Primary completion15 Sep 2030 (estimated)
- Study completion15 Sep 2040 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (10)Papers the sponsor has linked to this study.
- Other trials for Atrial FibrillationStudies of the same condition, open and under way.
- More trials run by University of California, San FranciscoThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 3,000 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of California, San Francisco
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Jeffrey E Olgin, MD, Principal investigator, University of California, San FranciscoEdward P Gerstenfeld, MD, Principal investigator, University of California, San FranciscoMark J Pletcher, MD, Principal investigator, University of California, San FranciscoGregory Marcus, MD, Principal investigator, University of California, San Francisco
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04404465
- Sponsor's protocol ID
- BEAT-AFib
- Acronym
- BEAT-AFib
- Status last verified
- Jul 2026
- First submitted
- 15 May 2020
- Last updated
- 15 Jul 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
January CT, Wann LS, Calkins H, Chen LY, Cigarroa JE, Cleveland JC Jr, Ellinor PT, Ezekowitz MD, Field ME, Furie KL, Heidenreich PA, Murray KT, Shea JB, Tracy CM, Yancy CW. 2019 AHA/ACC/HRS Focused Update of the 2014 AHA/ACC/HRS Guideline for the Management of Patients With Atrial Fibrillation: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Rhythm Society. J Am Coll Cardiol. 2019 Jul 9;74(1):104-132. doi: 10.1016/j.jacc.2019.01.011. Epub 2019 Jan 28. No abstract available.
PubMed 30703431Staerk L, Wang B, Preis SR, Larson MG, Lubitz SA, Ellinor PT, McManus DD, Ko D, Weng LC, Lunetta KL, Frost L, Benjamin EJ, Trinquart L. Lifetime risk of atrial fibrillation according to optimal, borderline, or elevated levels of risk factors: cohort study based on longitudinal data from the Framingham Heart Study. BMJ. 2018 Apr 26;361:k1453. doi: 10.1136/bmj.k1453.
PubMed 29699974Sivalokanathan S, Zghaib T, Greenland GV, Vasquez N, Kudchadkar SM, Kontari E, Lu DY, Dolores-Cerna K, van der Geest RJ, Kamel IR, Olgin JE, Abraham TP, Nazarian S, Zimmerman SL, Abraham MR. Hypertrophic Cardiomyopathy Patients With Paroxysmal Atrial Fibrillation Have a High Burden of Left Atrial Fibrosis by Cardiac Magnetic Resonance Imaging. JACC Clin Electrophysiol. 2019 Mar;5(3):364-375. doi: 10.1016/j.jacep.2018.10.016. Epub 2018 Dec 26.
PubMed 30898240Rahmutula D, Zhang H, Wilson EE, Olgin JE. Absence of natriuretic peptide clearance receptor attenuates TGF-beta1-induced selective atrial fibrosis and atrial fibrillation. Cardiovasc Res. 2019 Feb 1;115(2):357-372. doi: 10.1093/cvr/cvy224.
PubMed 30239604Rahmutula D, Marcus GM, Wilson EE, Ding CH, Xiao Y, Paquet AC, Barbeau R, Barczak AJ, Erle DJ, Olgin JE. Molecular basis of selective atrial fibrosis due to overexpression of transforming growth factor-beta1. Cardiovasc Res. 2013 Sep 1;99(4):769-79. doi: 10.1093/cvr/cvt074. Epub 2013 Apr 23.
PubMed 23612580Kim AM, Olgin JE. Microfibrosis and complex fractionated atrial electrograms. Heart Rhythm. 2009 Jun;6(6):811-2. doi: 10.1016/j.hrthm.2009.03.006. Epub 2009 Mar 3. No abstract available.
PubMed 19467509Everett TH 4th, Olgin JE. Atrial fibrosis and the mechanisms of atrial fibrillation. Heart Rhythm. 2007 Mar;4(3 Suppl):S24-7. doi: 10.1016/j.hrthm.2006.12.040. Epub 2006 Dec 28.
PubMed 17336879Marcus GM, Yang Y, Varosy PD, Ordovas K, Tseng ZH, Badhwar N, Lee BK, Lee RJ, Scheinman MM, Olgin JE. Regional left atrial voltage in patients with atrial fibrillation. Heart Rhythm. 2007 Feb;4(2):138-44. doi: 10.1016/j.hrthm.2006.10.017. Epub 2006 Oct 20.
PubMed 17275746Lee KW, Everett TH 4th, Rahmutula D, Guerra JM, Wilson E, Ding C, Olgin JE. Pirfenidone prevents the development of a vulnerable substrate for atrial fibrillation in a canine model of heart failure. Circulation. 2006 Oct 17;114(16):1703-12. doi: 10.1161/CIRCULATIONAHA.106.624320. Epub 2006 Oct 9.
PubMed 17030685Verheule S, Sato T, Everett T 4th, Engle SK, Otten D, Rubart-von der Lohe M, Nakajima HO, Nakajima H, Field LJ, Olgin JE. Increased vulnerability to atrial fibrillation in transgenic mice with selective atrial fibrosis caused by overexpression of TGF-beta1. Circ Res. 2004 Jun 11;94(11):1458-65. doi: 10.1161/01.RES.0000129579.59664.9d. Epub 2004 Apr 29.
PubMed 15117823
Study at a glance
From the registry record, last updated by the sponsor on 15 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Health eHeart BEAT-AFib - Health eHeart Biomarkers of Early Atrial Transformation in Atrial Fibrillation
- ClinicalTrials.gov ID
- NCT04404465
- Acronym / sponsor ID
- BEAT-AFib / BEAT-AFib
- Conditions
- Atrial Fibrillation
- Study type
- Observational
- Recruitment status
- Enrolling by invitation
- Enrolment
- 3,000 participants (estimated)
- Lead sponsor
- University of California, San FranciscoUniversity, hospital or other
- Study start
- 15 Sep 2020 (actual)
- Primary completion
- 15 Sep 2030 (estimated)
- Study completion
- 15 Sep 2040 (estimated)
- First posted
- 27 May 2020 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Atrial fibrillation (also known as AFib or AF) is the most common abnormal heart rhythm and results in an irregular beating of the heart. Currently, there is no way of identifying patients at most risk for the development or progression of AFib or those that will best respond to treatment. The purpose of this study is to improve our understanding of AFib and to find new ways of identifying those patients most at risk for developing AFib, have progressive AFib or be less responsive to treatment. For this reason, the investigators are studying imaging, blood, and digital markers that may contribute to AFib
Subjects will receive mobile devices (uch as an AliveCor Kardia and a VivaLnk Wearable ECG patch or similar devices) for remote electrocardiographic (ECG) monitoring. Additionally, subjects will use features using a smartphone research app (on the Eureka Research Platform) to monitor other important things such as activity, sleep, heart rate and others as they are developed. All subjects will receive serial blood draws and saliva sample collections once a year. Subjects will also undergo annual imaging in the form of an echocardiogram (Echo). Evaluations will be taken at baseline and once a year for three years from the baseline visit. Additionally, electronic surveys will be administered periodically (eVisits occurring every 3-6 months) using the mobile app.
Detailed description
This is a single center, longitudinal, observational cohort study. 3000 subjects are planned to be enrolled. Each subject will be consented, enrolled and assigned to a group based on AF diagnosis (AF Group, AF Risk Group and Control Group). All subjects will be given mobile devices (such as an AliveCor Kardia and a VivaLnk Wearable ECG patch or similar devices) for remote ECG monitoring. Additionally, sleep and activity can be monitored through a smartphone app (on the Eureka Research Platform). All subjects will receive serial blood draws and saliva sample collections to collect serum, plasma, whole blood, DNA and RNA in order to observe/identify any changes in blood-borne AF markers. Subjects will also undergo serial imaging in the form of an Echo to observe/identify markers and/or changes in cardiovascular structure and functioning. Evaluations will be taken at baseline and once a year for three years from their baseline visit. Additionally, electronic surveys will be administered periodically (eVisits occurring every 3-6 months) using the mobile app to observe any changes in participant reported symptoms.
Any participant who receives an AF ablation as part of clinical care will additionally receive one in-person follow-up three months post-ablation procedure and an electronic survey one month post-ablation procedure to observe changes in symptoms after ablation.
Subjects will be followed for at least 3 years. The total duration of the study is expected to be at least 10 years. It is expected that it will take 3-4 years for subject recruitment and at least 3 years for subject follow-up (3 yearly in-person visits), but anticipate the digital follow-up to go beyond that (at least 10 years of digital follow-up)
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Control Group | – | –Participants undergoing electrophysiologic (EP) study or ablation for supraventricular tachycardia (SVT) with no history of AF and does not meet criteria of At Risk Group or AF Group |
| At Risk Group | – | –Participants with no prior diagnosis of AF and have: 1. two or more of the following criteria: * Age >65 years of age * A diagnosis of hypertension * A diagnosis of diabetes * A diagnosis of sleep apnea * A body mass index (BMI) ≥30 * Stable heart failure (HF) with preserved or reduced ejection fraction (New York Heart Association Class I, II or III) * Chronic kidney disease (CKD) not requiring dialysis AND/ OR 2. More than 5% premature atrial complex (PAC) burden on ambulatory ECG monitoring (e.g. holter, ZioPatch, Lifewatch, etc.) |
| AF Group | – | –Participants who have a history of non-valvular AF or Atrial Flutter (AFL) documented on ECG or ambulatory monitoring within 1 year of enrollment |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Subjects with a diagnosis of AF (i.e. new onset AF, paroxysmal AF, persistent AF, Permanent AF), those undergoing AF ablation or DCCV, those with a PAC greater or equal to 5% PAC burden, those undergoing SVT ablation, subjects with high risk of AF and healthy volunteers at least 18 years of age or older who have been seen at UCSF, who meet the inclusion and exclusion criteria will be eligible for participation in this study.
Key inclusion criteria (17 listed)
- At least 18 years of age or older
- English speaking
- Able to consent
- ANY one of the following criteria:
Key exclusion criteria (11 listed)
- Life expectancy < 1 year
- Reversible causes of AF (e.g., post-operative AF, cardiac surgery, pulmonary embolism, untreated hyperthyroidism)
- Pregnant at the time of enrollment
- Unwilling/unable to perform follow-up using digital follow-up
- CKD requiring dialysis
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Incident AF [At Risk Group]
Time frame: 10 years
Incident AF is defined as the development of a new onset AF in subjects who do not have a previous AF diagnosis. This will be evaluated by detection of arrhythmias by use of ambulatory ECG monitoring (using an VivaLnk Wearable ECG patch and an AliveCor Kardia) and will be diagnosed by an automated algorithm that detects irregularly irregular rhythms. A random 50% of events will be overread by a cardiologist.
Progression of AF [AF Group]
Time frame: 10 years
Progression of AF is defined as increase in AF burden which is the amount of time spent in AF over the course of one month as determined by use of ambulatory ECG monitoring (using an VivaLnk Wearable ECG patch and an AliveCor Kardia) and will be diagnosed by an automated algorithm that detects irregularly irregular rhythms. A random 50% of events will be overread by a cardiologist.
2 secondary outcomes
Recurrence of AF after treatment with direct current cardioversion (DCCV) or AF ablation [AF Group]
Time frame: 10 years
Symptom Burden [AF Group]
Time frame: 10 years
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 15 Jul 2026.
- Background: PubMed 30703431January CT, Wann LS, Calkins H, Chen LY, Cigarroa JE, Cleveland JC Jr, Ellinor PT, Ezekowitz MD, Field ME, Furie KL, Heidenreich PA, Murray KT, Shea JB, Tracy CM, Yancy CW. 2019 AHA/ACC/HRS Focused Update of the 2014 AHA/ACC/HRS Guideline for the Management of Patients With Atrial Fibrillation: A Report of the American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines and the Heart Rhythm Society. J Am Coll Cardiol. 2019 Jul 9;74(1):104-132. doi: 10.1016/j.jacc.2019.01.011. Epub 2019 Jan 28. No abstract available.
- Background: PubMed 29699974Staerk L, Wang B, Preis SR, Larson MG, Lubitz SA, Ellinor PT, McManus DD, Ko D, Weng LC, Lunetta KL, Frost L, Benjamin EJ, Trinquart L. Lifetime risk of atrial fibrillation according to optimal, borderline, or elevated levels of risk factors: cohort study based on longitudinal data from the Framingham Heart Study. BMJ. 2018 Apr 26;361:k1453. doi: 10.1136/bmj.k1453.
- Background: PubMed 30898240Sivalokanathan S, Zghaib T, Greenland GV, Vasquez N, Kudchadkar SM, Kontari E, Lu DY, Dolores-Cerna K, van der Geest RJ, Kamel IR, Olgin JE, Abraham TP, Nazarian S, Zimmerman SL, Abraham MR. Hypertrophic Cardiomyopathy Patients With Paroxysmal Atrial Fibrillation Have a High Burden of Left Atrial Fibrosis by Cardiac Magnetic Resonance Imaging. JACC Clin Electrophysiol. 2019 Mar;5(3):364-375. doi: 10.1016/j.jacep.2018.10.016. Epub 2018 Dec 26.
- Background: PubMed 30239604Rahmutula D, Zhang H, Wilson EE, Olgin JE. Absence of natriuretic peptide clearance receptor attenuates TGF-beta1-induced selective atrial fibrosis and atrial fibrillation. Cardiovasc Res. 2019 Feb 1;115(2):357-372. doi: 10.1093/cvr/cvy224.
- Background: PubMed 23612580Rahmutula D, Marcus GM, Wilson EE, Ding CH, Xiao Y, Paquet AC, Barbeau R, Barczak AJ, Erle DJ, Olgin JE. Molecular basis of selective atrial fibrosis due to overexpression of transforming growth factor-beta1. Cardiovasc Res. 2013 Sep 1;99(4):769-79. doi: 10.1093/cvr/cvt074. Epub 2013 Apr 23.
- Background: PubMed 19467509Kim AM, Olgin JE. Microfibrosis and complex fractionated atrial electrograms. Heart Rhythm. 2009 Jun;6(6):811-2. doi: 10.1016/j.hrthm.2009.03.006. Epub 2009 Mar 3. No abstract available.
- Background: PubMed 17336879Everett TH 4th, Olgin JE. Atrial fibrosis and the mechanisms of atrial fibrillation. Heart Rhythm. 2007 Mar;4(3 Suppl):S24-7. doi: 10.1016/j.hrthm.2006.12.040. Epub 2006 Dec 28.
- Background: PubMed 17275746Marcus GM, Yang Y, Varosy PD, Ordovas K, Tseng ZH, Badhwar N, Lee BK, Lee RJ, Scheinman MM, Olgin JE. Regional left atrial voltage in patients with atrial fibrillation. Heart Rhythm. 2007 Feb;4(2):138-44. doi: 10.1016/j.hrthm.2006.10.017. Epub 2006 Oct 20.
- Background: PubMed 17030685Lee KW, Everett TH 4th, Rahmutula D, Guerra JM, Wilson E, Ding C, Olgin JE. Pirfenidone prevents the development of a vulnerable substrate for atrial fibrillation in a canine model of heart failure. Circulation. 2006 Oct 17;114(16):1703-12. doi: 10.1161/CIRCULATIONAHA.106.624320. Epub 2006 Oct 9.
- Background: PubMed 15117823Verheule S, Sato T, Everett T 4th, Engle SK, Otten D, Rubart-von der Lohe M, Nakajima HO, Nakajima H, Field LJ, Olgin JE. Increased vulnerability to atrial fibrillation in transgenic mice with selective atrial fibrosis caused by overexpression of TGF-beta1. Circ Res. 2004 Jun 11;94(11):1458-65. doi: 10.1161/01.RES.0000129579.59664.9d. Epub 2004 Apr 29.
- Individual participant dataSharing planned: No
Related trials for Atrial Fibrillation
Active, not recruiting
Horizon 360 Protocol for the Treatment of Paroxysmal Atrial Fibrillation With the Sphere-360™ Catheter and Affera™ Mapping and Ablation System (Horizon 360)
Paroxysmal AF
Active, not recruitingObservational study
Concomitant Left Atrial Appendage Closure and Pulsed Field Ablation-Asia
Concomitant Procedures, Atrial Fibrillation
Active, not recruiting
CONVERGE Post-Approval Study (PAS)
Chronic Atrial Fibrillation
Recruiting
Early Closure of Left Atrial Appendage for Patients With Atrial Fibrillation and Ischemic Stroke Despite Anticoagulation Therapy
Ischemic Stroke, Atrial Fibrillation
RecruitingPhase 2
Safety in Adult Participants With Atrial Fibrillation Who Are Treated With Anticoagulation
Atrial Fibrillation (AF)
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
Jeffrey E Olgin, MD principal investigator
University of California, San Francisco
Edward P Gerstenfeld, MD principal investigator
University of California, San Francisco
Mark J Pletcher, MD principal investigator
University of California, San Francisco
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Atrial Fibrillation, run by University of California, San Francisco at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 17 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: enrolling by invitation, as of the sponsor's last update on 15 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Incident AF [At Risk Group] (time frame: 10 years). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04404465, which also lists 10 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 15 Jul 2026.