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Current or Recent History of Atrial FibrillationPhase 2GENETIC-AFNCT01970501

Genetically Targeted Therapy for the Prevention of Symptomatic Atrial Fibrillation in Patients With Heart Failure

A Phase 2 study testing bucindolol hydrochloride and metoprolol succinate in people with Current or Recent History of Atrial Fibrillation, run by ARCA Biopharma, Inc. at 97 sites in 6 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

This study is being done to compare the effects of bucindolol hydrochloride (bucindolol) to metoprolol succinate (Toprol-XL) on the recurrence of symptomatic atrial fibrillation/atrial flutter in patients with heart failure who have a specific genotype for the beta-1 adrenergic receptor. Read more about this study

Who is it for?
Ages 18 to 85 years
What is being tested?
bucindolol hydrochloride and metoprolol succinate
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
267 participants
Where
97 sitesin 6 countries
Study dates
Apr 2014to 28 Dec 2017
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

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 to 85 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Must weigh at least 40 kg
  • Possess the β1389 Arg/Arg genotype
  • Left Ventricular Ejection Fraction (LVEF) < 0.50 assessed within 12 months prior to Screening
  • At least one episode of symptomatic paroxysmal or persistent AF within 180 days of Screening
  • Clinically appropriate for electrical cardioversion (ECV) if AF/AFL is present after study drug initiation
  • Receiving appropriate anticoagulation therapy prior to Randomization

Who cannot join

  • NYHA Class IV symptoms at the time of Randomization
  • Significant fluid overload at Randomization
  • Permanent AF at Screening
  • More than two previous ECV within 6 months of Randomization or if the most recent ECV failed to produce SR
  • Presence of an LVAD, or likely to requirement LVAD placement within 6 months of Randomization
  • History of a successful atrioventricular (AV) node ablation
  • History of an AF/AFL ablation within 30 days of Randomization
  • Evidence of an appropriate firing of an implanted cardioverter-defibrillator (ICD) device for ventricular tachycardia (VT) or ventricular fibrillation (VF) within 90 days of Randomization

Trial locations and contacts

97 sites in 6 countries.

97 sites in 6 countries

United States48 sites
  • ARCA Clinical Research Site #173

    Akron, Ohio, 44304

  • ARCA Clinical Research Site # 179

    Albany, New York, 12205

  • ARCA Clinical Research Site #157

    Anchorage, Alaska, 99508

  • ARCA Clinical Research Site #351

    Athens, Georgia, 30606

  • ARCA Clinical Research Site #389

    Atlanta, Georgia, 30322

  • ARCA Clinical Research Site #153

    Aurora, Colorado, 80045

  • ARCA Clinical Research Site #398

    Baltimore, Maryland, 21287

  • ARCA Clinical Site #391

    Charlottesville, Virginia, 22908

  • ARCA Clinical Research Site #392

    Cincinnati, Ohio, 45219

  • ARCA Clinical Research Site #322

    Cleveland, Ohio, 44106

  • ARCA Clinical Research Site #151

    Columbus, Ohio, 43210

  • ARCA Clinical Research Site #387

    Dallas, Texas, 75230

  • ARCA Clinical Research Site #380

    Denver, Colorado, 80120

  • ARCA Clinical Research Site #181

    Durham, North Carolina, 27705

  • ARCA Clinical Research Site #381

    East Palo Alto, California, 94303

  • ARCA Clinical Research Site #161

    Elmer, New Jersey, 08318

  • ARCA Clinical Research Site #386

    Falls Church, Virginia, 22042

  • ARCA Clinical Site #393

    Germantown, Tennessee, 38138

  • ARCA Clinical Research Site #349

    Greensboro, North Carolina, 27401

  • ARCA Clinical Research Site #303

    Hammond, Indiana, 46320

  • ARCA Clinical Research Site # 189

    Hershey, Pennsylvania, 17033

  • ARCA Clinical Research Site #202

    Hillsborough, New Jersey, 08844

  • ARCA Clinical Research Site #388

    Iowa City, Iowa, 52242

  • ARCA Clinical Research Site #198

    Jackson, Tennessee, 38305

  • ARCA Clinical Research Site #109

    Lancaster, Pennsylvania, 17603

  • ARCA Clinical Research Site #152

    Lincoln, Nebraska, 68506

  • ARCA Clinical Research Site #186

    Loma Linda, California, 92357

  • ARCA Clinical Research Site #200

    Manassas, Virginia, 20109

  • ARCA Clinical Research Site #195

    Miami, Florida, 33136

  • ARCA Clinical Research Site #156

    Minneapolis, Minnesota, 55417

  • ARCA Clinical Site #396

    New Orleans, Louisiana, 70121

  • ARCA Clinical Research Site #397

    New York, New York, 10029

  • ARCA Research Site #131

    Norfolk, Virginia, 23507

  • ARCA Clinical Research Site #342

    Oakbrook Terrace, Illinois, 60181

  • ARCA Clinical Research Site #399

    Oklahoma City, Oklahoma, 73135

  • ARCA Clinical Research Site #320

    Pasadena, California, 91105

  • ARCA Clinical Research Site #133

    Philadelphia, Pennsylvania, 19104

  • ARCA Clinical Research Site #383

    Phoenix, Arizona, 85004

  • ARCA Clinical Research Site #385

    Phoenix, Arizona, 85018

  • ARCA Clinical Research Site #115

    Portland, Oregon, 97201

  • ARCA Clinical Research Site #196

    Puyallup, Washington, 98372

  • ARCA Clinical Research Site #174

    Saint Paul, Minnesota, 55102

  • ARCA Clinical Research Site #379

    Salt Lake City, Utah, 84132

  • ARCA Clinical Research Site #108

    St Louis, Missouri, 63110

  • ARCA Clinical Research Site #201

    St Louis, Missouri, 63128

  • ARCA Clinical Research Site #390

    Stanford, California, 94305

  • ARCA Clinical Research Site #184

    Tampa, Florida, 33606

  • ARCA Clinical Research Site #127

    Ypsilanti, Michigan, 48197

Other trials in United States

Canada18 sites
  • ARCA Clinical Research Site #612

    Calgary, Alberta, T2N 4Z6

  • ARCA Clinical Research Site #611

    Cambridge, Ontario, N1R 6V6

  • ARCA Clinical Research Site #621

    Cambridge, Ontario, N1R 7R1

  • ARCA Clinical Research Site #601

    Hamilton, Ontario, L8L 2X2

  • ARCA Clinical Research Site #609

    London, Ontario, N6A 5A5

  • ARCA Clinical Research Site #614

    Montreal, Quebec, H1T 1C8

  • ARCA Clinical Research Site #607

    Montreal, Quebec, H2W 1T8

  • ARCA Clinical Research Site #603

    Montreal, Quebec, H3G 1A3

  • ARCA Clinical Research Site #623

    Newmarket, Ontario, L3Y 2P6

  • ARCA Clinical Research Site #618

    Oshawa, Ontario, L1H 1B9

  • ARCA Clinical Research Site #613

    Ottawa, Ontario, K1Y 4W7

  • ARCA Clinical Research Site #615

    Québec, G1V 4G5

  • ARCA Clinical Research Site #625

    Saint-Jérôme, Quebec, J7Z 5T3

  • ARCA Clinical Research Site #602

    Sherbrooke, Quebec, J1H 5N4

  • ARCA Clinical Research Site #619

    Toronto, Ontario, M4N 3M5

  • ARCA Clinical Research Site #626

    Trois-Rivières, Quebec, G8Z 3R9

  • ARCA Clinical Research Site #624

    Vancouver, British Columbia, V6E 1M7

  • ARCA Clinical Research Site #616

    Waterloo, Ontario, N2J 1C4

Other trials in Canada

Hungary9 sites
  • ARCA Clinical Research Site #726

    Budapest, 1096

  • ARCA Clinical Research Site #727

    Budapest, 1122

  • ARCA Clinical Research Site #728

    Budapest, 1134

  • ARCA Clinical Research Site #729

    Budapest, 1145

  • ARCA Clinical Research Site #733

    Debrecen, 4032

  • ARCA Clinical Research Site #732

    Kaposvár, 7400

  • ARCA Clinical Research Site #730

    Pécs, 7624

  • ARCA Clinical Research Site #731

    Szeged, 6725

  • ARCA Clinical Research Site #734

    Szolnok, 5000

Other trials in Hungary

Netherlands9 sites
  • ARCA Clinical Research Site #781

    Capelle aan den IJssel, 2906 ZC

  • ARCA Clinical Research Site #779

    Gorinchem, 4204 AA

  • ARCA Clinical Research Site #776

    Groningen, 9713 GZ

  • ARCA Clinical Research Site #780

    Helmond, 5707 HA

  • ARCA Clinical Research Site #782

    Leiderdorp, 2334 CK

  • ARCA Clinical Research Site #786

    Roosendaal, 4708 AE

  • ARCA Clinical Research Site #777

    Sneek, 8601 ZK

  • ARCA Clinical Research Site #783

    Stadskanaal, 9501 HE

  • ARCA Clinical Research Site #784

    Tiel, 4002 WP

Other trials in Netherlands

Poland8 sites
  • ARCA Clinical Research Site #752

    Bialystok, 15-276

  • ARCA Clinical Research Site #757

    Gdansk, 80-952

  • ARCA Clinical Research Site #753

    Krakow, 31-501

  • ARCA Clinical Research Site #755

    Lodz, 91-347

  • ARCA Clinical Research Site #751

    Lodz, 92-213

  • ARCA Clinical Research Site #758

    Lublin, 20-954

  • ARCA Clinical Research Site #754

    Warsaw, 02-097

  • ARCA Clinical Research Site #756

    Wroclaw, 50-981

Other trials in Poland

Serbia5 sites
  • ARCA Clinical Research Site #807

    Belgrade, 11000

  • ARCA Clinical Research Site #806

    Belgrade, 11080

  • ARCA Clinical Research Site #801

    Kragujevac, 34000

  • ARCA Clinical Research Site #804

    Niš, 18000

  • ARCA Clinical Research Site #805

    Niš, 18000

Other trials in Serbia

About this study

Official title: GENETIC-AF - A Genotype-Directed Comparative Effectiveness Trial of Bucindolol and Toprol-XL for Prevention of Symptomatic Atrial Fibrillation/Atrial Flutter in Patients With Heart Failure

This study is being done to compare the effects of bucindolol hydrochloride (bucindolol) to metoprolol succinate (Toprol-XL) on the recurrence of symptomatic atrial fibrillation/atrial flutter in patients with heart failure who have a specific genotype for the beta-1 adrenergic receptor.

Read the detailed description

The goal of the GENETIC-AF trial is to demonstrate the superiority of pharmacogenetically targeted bucindolol compared to metoprolol for the prevention of symptomatic atrial fibrillation or atrial flutter in a genotype-defined population with heart failure and/or reduced left ventricular ejection fraction at high risk of atrial fibrillation/atrial flutter recurrence.

Being tested
bucindolol hydrochloride, metoprolol succinate, Placebo oral capsule
Keywords
atrial fibrillation, atrial flutter, heart failure, reduced left ventricle ejection fraction, electrical cardioversion, GENETIC-AF, Medtronic, bucindolol, pharmacogenetic, ARCA, Toprol, Toprol-XL, Metoprolol, Metoprolol succinate
Medical subject headings
Atrial Fibrillation, Atrial Flutter, Heart Failure

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • bucindolol hydrochlorideDrug

    Also called bucindolol

  • metoprolol succinateDrug

    Also called Toprol-XL, metoprolol

  • Placebo oral capsuleOther

    Also called placebo

Study groups in NCT01970501
Study groupRoleWhat they receive
bucindolol hydrochlorideExperimentalbucindolol hydrochloride (bucindolol) Participants were randomized (1:1) to blinded treatment with bucindolol or metoprolol and titrated weekly to target doses of 50 mg twice daily (BID; < 75 kg) or 100 mg BID (≥ 75 kg) for bucindolol or 200 mg once daily (QD) for metoprolol. 84% of bucindolol participants attained target dose and 72% of metoprolol participants attained target dose. The lowest starting dose of bucindolol was 6.25 mg BID with weekly dose titrations to the weight-based target dose or to the maximum tolerated dose. The starting dose assigned was based on the patient's beta-blocker treatment prior to randomization. Capsules for titration were available in the following dosage strengths to be taken twice daily (with or without food): 6.25mg, 12.5mg, 25mg, 50mg, and 100mg.
Receives: Drug: bucindolol hydrochloride
metoprolol succinateActive comparatormetoprolol succinate (Toprol-XL) Participants were randomized (1:1) to blinded treatment with bucindolol or metoprolol and titrated weekly to target doses of 50 mg twice daily (BID; < 75 kg) or 100 mg BID (≥ 75 kg) for bucindolol or 200 mg once daily (QD) for metoprolol. 84% of bucindolol participants attained target dose and 72% of metoprolol participants attained target dose. The lowest starting dose of metoprolol was 25 mg QD with weekly dose titrations to the target dose or to the maximum tolerated dose. The starting dose assigned was based upon the patient's beta-blocker treatment prior to randomization. Capsules for titration were available in the following dosage strengths to be taken twice daily (with or without food): 25mg, 50mg, 100mg, 200mg and/or matching placebo oral capsule to maintain blinded dosing.
Receives: Drug: metoprolol succinate; Other: Placebo oral capsule

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Time to First Event of Symptomatic Atrial Fibrillation/Atrial Flutter (AF/AFL) or All Cause Mortality (ACM) During the 24-week Follow-up Period After Establishment of Stable Sinus Rhythm (SR) on Study Drug [End of Treatment Week 24].

    Time-to-event is calculated as the date of the event minus the date of initiation of efficacy follow-up, with 1 added in order to include both the start date and end date of the interval. Cox's proportional hazards model will be used to calculate estimated hazard ratios and 95% confidence intervals. The calculations will be performed with the SAS PHREG procedure, with the stratification variables specified in the STRATA statement and the treatment group comparator and any covariates being examined specified in the MODEL statement. For the primary endpoint, the appropriateness of assuming proportional hazards will be explored by the graphing of log (-log(survival function)) over follow-up for each treatment group.

    Measured: end of treatment week 24

Secondary outcomes (3)
  1. Time to First Event of Symptomatic or Asymptomatic AF/AFL or ACM During the 24-week Follow-up Period After Establishment of Stable SR on Study Drug [End of Treatment Week 24]

    Number of days on study medication before participant experienced symptomatic or asymptomatic atrial fibrillation, atrial flutter, or all-cause mortality during the 24 week follow up period.

    Measured: end of treatment week 24

  2. Number of Patients With Adequate Ventricular Rate Control During the 24-week Follow-up Period

    Number of patients with adequate ventricular rate control following the start of medication during the 24-week Follow-up Period

    Measured: end of treatment week 24

  3. Total Number of Hospitalization Days Per Patient (All-cause) During the Total Study Period (24 Weeks)

    Total number of hospitalization days per patient (all-cause) following the start of study medication during the Total Study Period (24 weeks). Hospitalization was defined by a hospital admission (note that same day admit and discharge equates to 0 days duration), ER visits were not counted as events.

    Measured: 24 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted28 Oct 2013 (estimated)
  2. Study startApr 2014
  3. Primary completion28 Dec 2017
  4. Study completion28 Dec 2017

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Quadruple blind
Who is masked
Participant, Care provider, Investigator, Outcomes assessor
Enrolment
267 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01970501
Sponsor's protocol ID
BUC-CLIN-303
Acronym
GENETIC-AF
Status last verified
Sep 2022
First submitted
23 Oct 2013
Last updated
26 Sep 2022
Data monitoring committee
Yes
Individual data sharing
No

Publications

  • Liggett SB, Mialet-Perez J, Thaneemit-Chen S, Weber SA, Greene SM, Hodne D, Nelson B, Morrison J, Domanski MJ, Wagoner LE, Abraham WT, Anderson JL, Carlquist JF, Krause-Steinrauf HJ, Lazzeroni LC, Port JD, Lavori PW, Bristow MR. A polymorphism within a conserved beta(1)-adrenergic receptor motif alters cardiac function and beta-blocker response in human heart failure. Proc Natl Acad Sci U S A. 2006 Jul 25;103(30):11288-93. doi: 10.1073/pnas.0509937103. Epub 2006 Jul 14.

    PubMed 16844790
  • O'Connor CM, Fiuzat M, Carson PE, Anand IS, Plehn JF, Gottlieb SS, Silver MA, Lindenfeld J, Miller AB, White M, Walsh R, Nelson P, Medway A, Davis G, Robertson AD, Port JD, Carr J, Murphy GA, Lazzeroni LC, Abraham WT, Liggett SB, Bristow MR. Combinatorial pharmacogenetic interactions of bucindolol and beta1, alpha2C adrenergic receptor polymorphisms. PLoS One. 2012;7(10):e44324. doi: 10.1371/journal.pone.0044324. Epub 2012 Oct 10.

    PubMed 23071495
  • Aleong RG, Sauer WH, Davis G, Murphy GA, Port JD, Anand IS, Fiuzat M, O'Connor CM, Abraham WT, Liggett SB, Bristow MR. Prevention of atrial fibrillation by bucindolol is dependent on the beta(1)389 Arg/Gly adrenergic receptor polymorphism. JACC Heart Fail. 2013 Aug;1(4):338-344. doi: 10.1016/j.jchf.2013.04.002.

    PubMed 24159564
  • Kao DP, Davis G, Aleong R, O'Connor CM, Fiuzat M, Carson PE, Anand IS, Plehn JF, Gottlieb SS, Silver MA, Lindenfeld J, Miller AB, White M, Murphy GA, Sauer W, Bristow MR. Effect of bucindolol on heart failure outcomes and heart rate response in patients with reduced ejection fraction heart failure and atrial fibrillation. Eur J Heart Fail. 2013 Mar;15(3):324-33. doi: 10.1093/eurjhf/hfs181. Epub 2012 Dec 7.

    PubMed 23223178
  • Carroll IA, Piccini JP, Steinberg BA, Tzou WS, Richards JC, DeMets DL, Bristow MR. Symptoms Burden as a Clinical Outcomes Assessment in Heart Failure Patients With Atrial Fibrillation. JACC Heart Fail. 2025 Apr;13(4):573-585. doi: 10.1016/j.jchf.2024.08.023. Epub 2024 Nov 20.

    PubMed 39570238
  • Piccini JP, Dufton C, Carroll IA, Healey JS, Abraham WT, Khaykin Y, Aleong R, Krueger SK, Sauer WH, Wilton SB, Rienstra M, van Veldhuisen DJ, Anand IS, White M, Camm AJ, Ziegler PD, Marshall D, Bristow MR, Connolly SJ; Genotype-Directed Comparative Effectiveness Trial of Bucindolol and Toprol-XL for Prevention of Atrial Fibrillation/Atrial Flutter in Patients with Heart Failure Trial Investigators*. Bucindolol Decreases Atrial Fibrillation Burden in Patients With Heart Failure and the ADRB1 Arg389Arg Genotype. Circ Arrhythm Electrophysiol. 2021 Aug;14(8):e009591. doi: 10.1161/CIRCEP.120.009591. Epub 2021 Jul 16.

    PubMed 34270905
  • Piccini JP, Connolly SJ, Abraham WT, Healey JS, Steinberg BA, Al-Khalidi HR, Dignacco P, van Veldhuisen DJ, Sauer WH, White M, Wilton SB, Anand IS, Dufton C, Marshall DA, Aleong RG, Davis GW, Clark RL, Emery LL, Bristow MR. A genotype-directed comparative effectiveness trial of Bucindolol and metoprolol succinate for prevention of symptomatic atrial fibrillation/atrial flutter in patients with heart failure: Rationale and design of the GENETIC-AF trial. Am Heart J. 2018 May;199:51-58. doi: 10.1016/j.ahj.2017.12.001. Epub 2017 Dec 6.

    PubMed 29754666

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing bucindolol hydrochloride and metoprolol succinate in people with Current or Recent History of Atrial Fibrillation, run by ARCA Biopharma, Inc. at 97 sites in 6 countries.

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 6 inclusion and 8 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: finished, as of the sponsor's last update on 26 Sep 2022. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 97 sites in United States, Canada, Hungary, Netherlands, Poland and 1 more country. 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.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 15 Sep 2022). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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?

Time to First Event of Symptomatic Atrial Fibrillation/Atrial Flutter (AF/AFL) or All Cause Mortality (ACM) During the 24-week Follow-up Period After Establishment of Stable Sinus Rhythm (SR) on Study Drug [End of Treatment Week 24]. (time frame: end of treatment week 24). 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 NCT01970501, which also lists 7 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 26 Sep 2022.

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