- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04474223
Surveillance and Treatment to Prevent Fetal Atrioventricular Block Likely to Occur Quickly (STOP BLOQ)
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Fetal complete (3°) atrioventricular block (AVB), identified in the 2nd trimester in an otherwise normally developing heart, is almost universally associated with maternal anti-Ro autoantibodies, which transcytose the placenta via the trophoblastic IgG receptor, FcγRn. The burden of 3° AVB is considerable: perinatal mortality of 18% exceeds that for all non-cardiac congenital anomalies combined, and almost all survivors require lifelong cardiac pacing with its associated complications. It has been speculated that full expression of conduction disease occurs by sequential fetal progression from normal rhythm (NR) to 1° AVB [prolonged AV interval assessed by echocardiogram (echo)], to 2° AVB (irregular cardiac rhythm or bradycardia), culminating in 3° AVB. Fetal heart rate and rhythm monitoring (FHRM) suggests a time interval of ~12 hours for the transition from NR to 3° AVB, albeit the culprit biologic processes (inflammation leading to fibrosis) likely initiate prior to clinical detection. Anecdotal evidence suggests this transition period, marked by an irregular rhythm and/or bradycardia, may be the only window of opportunity for anti-inflammatory treatment to restore NR.
A barrier to preventing progression to 3° AVB is the absence of a technique to accurately surveil for the precipitate transition from NR to 3° AVB. Surveillance limited to weekly echos (current standard of care) may be too infrequent to detect this transition period when treatment is most likely to be effective. We have now obviated this obstacle and shown that ambulatory FHRM by the mother at home with confirmation of abnormal findings by echo is not only feasible but may afford rapid treatment restoring NR. Combining results from studies comprising 275 anti-Ro+ pregnancies, 87% completed monitoring with a false positive rate of 5%. In 4 cases of 2° AVB identified by FHRM and treated <12h, AVB reversed. Remarkably, no cases of 2° or 3° AVB were missed, suggesting mothers can recognize abnormal FHRM, reducing or precluding the need for weekly echos.
The proposed project combines the expertise of fetal cardiologist Bettina F. Cuneo, MD, initiator and PI of the FHRM program, and rheumatologist Jill P. Buyon, MD, founder/director of the largest extant registry of anti-Ro-mediated AVB, whose research on the pathogenesis supports a fetal inflammatory component associated with high-titer antibodies. Participants will be referred from 35 sites in 3 sequential Steps: 1) Screening for high titer anti-Ro60 or Ro52 centrally in Dr. Buyon's lab; 2) Surveillance by FHRM 3x daily and weekly echo; 3) Treatment of 2° AVB identified by FHRM confirmed by echo. Feasibility of FHRM supported by weekly echo of high-autoantibody-titer mothers will be leveraged to address the efficacy of expeditious (<12 h after detection) treatment of 2° AVB as well as the incidence/outcome of AV interval prolongation and extra-nodal disease.
Study Type
Enrollment (Estimated)
Phase
- Phase 3
Contacts and Locations
Study Contact
- Name: Mala Masson
- Phone Number: 212-263-0372
- Email: mala.masson@nyulangone.org
Study Contact Backup
- Name: Jill Buyon, MD
- Phone Number: 212-263-0756
- Email: Jill.Buyon@nyulangone.org,
Study Locations
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Alberta
-
Edmonton, Alberta, Canada, AB T6G 2B7
- Not yet recruiting
- Stollery Children's Hospital
-
Principal Investigator:
- Lisa Hornberger, MD
-
Contact:
- Lisa Hornberger, MD
- Email: Lisa.Hornberger@albertahealthservices.ca
-
-
-
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Arizona
-
Phoenix, Arizona, United States, 85016
- Recruiting
- Phoenix Children's Hospital/Dignity Health
-
Contact:
- Christopher Lindblade, MD
- Email: clindblade@phoenixchildrens.com
-
Principal Investigator:
- Christopher Lindblade, MD
-
-
California
-
Los Angeles, California, United States, 90095
- Recruiting
- University of California - Los Angeles (UCLA)
-
Contact:
- Gary Satou, MD
- Email: GSatou@mednet.ucla.edu
-
Contact:
- Mark Sklansky, MD
- Email: MSklansky@mednet.ucla.edu
-
Principal Investigator:
- Gary Satou, MD
-
Sub-Investigator:
- Mark Sklansky, MD
-
Sub-Investigator:
- D Krakow, MD
-
Palo Alto, California, United States, 94305
- Recruiting
- Stanford University
-
Contact:
- Theresa Tacy, MD
- Email: tatacy@stanford.edu
-
Principal Investigator:
- Theresa Tacy, MD
-
Contact:
- Michelle Kaplinski, MD
- Email: mkaplinsk@stanford.edu
-
Sub-Investigator:
- Michelle Kaplinski, MD
-
San Francisco, California, United States, 94143
- Recruiting
- University of California-San Francisco
-
Contact:
- Anita Mood-Grady, MD
- Email: Anita.Grady@ucsf.edu
-
Principal Investigator:
- Anita Mood-Grady, MD
-
-
Colorado
-
Aurora, Colorado, United States, 80204
- Recruiting
- University of Colorado, Denver (UCD)
-
Principal Investigator:
- Bettina Cuneo, MD
-
Contact:
- Bettina Cuneo, MD
- Phone Number: 720-777-1030
- Email: Bettina.Cuneo@childrenscolorado.org
-
-
Connecticut
-
New Haven, Connecticut, United States, 06510
- Recruiting
- Yale University School of Medicine
-
Contact:
- Joshua Copel, MD
- Email: joshua.copel@yale.edu
-
Principal Investigator:
- Joshua Copel, MD
-
-
District of Columbia
-
Washington, District of Columbia, United States, 20010
- Recruiting
- Children's National Medical Center/George Washington University
-
Contact:
- Anita Krishnan, MD
- Email: AKrishna@childrensnational.org
-
Contact:
- Mary Donofrio, MD
- Email: MDonofri@childrensnational.org
-
Principal Investigator:
- Anita Krishnan, MD
-
Sub-Investigator:
- Mary Donofrio, MD
-
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Kentucky
-
Lexington, Kentucky, United States, 40536
- Recruiting
- University of Kentucky / Kentucky Children's Hospital
-
Contact:
- Kristopher Cumbermack, MD
- Email: KCumbermack@uky.edu
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Principal Investigator:
- Kristopher Cumbermack, MD
-
Louisville, Kentucky, United States, 40202
- Not yet recruiting
- University of Louisville / Norton Children's Hospital
-
Contact:
- Jyothi Matta, MBBS
- Email: Jyothi.Matta@louisville.edu
-
Contact:
- Brian Holland, MD
- Email: brian.holland@louisville.edu
-
Principal Investigator:
- Jyothi Matta, MBBS
-
Sub-Investigator:
- Brian Holland, MD
-
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Michigan
-
Ann Arbor, Michigan, United States, 48109
- Recruiting
- University of Michigan / C. S. Mott Children's Hospital
-
Contact:
- Sonal Owens, MD
- Email: sthakkar@med.umich.edu
-
Principal Investigator:
- Sonal Owens, MD
-
Sub-Investigator:
- Jimmy Lu, MD
-
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Minnesota
-
Minneapolis, Minnesota, United States, 55404
- Recruiting
- Children's Hospital of Minnesota
-
Contact:
- Lisa Howley, MD
- Email: lhowley@chc-pa.org
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Principal Investigator:
- Lisa Howley, MD
-
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New Mexico
-
Rio Rancho, New Mexico, United States, 87124
- Recruiting
- Perinatal Associates of New Mexico
-
Contact:
- Gary Joffe, MD
- Email: gjoffe@panm.com
-
Principal Investigator:
- Gary Joffe, MD
-
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New York
-
New York, New York, United States, 10016
- Recruiting
- NYU Langone Health
-
Contact:
- Colin Phoon, MD
- Email: Colin.Phoon@nyulangone.org
-
Principal Investigator:
- Jill Buyon, MD
-
Sub-Investigator:
- Colin Phoon, MD
-
New York, New York, United States, 10032
- Recruiting
- Columbia University Medical Center
-
Principal Investigator:
- Stephanie Levasseur, MD
-
Contact:
- Stephanie Levasseur, MD
- Email: sl2363@cumc.columbia.edu
-
New York, New York, United States, 10029
- Recruiting
- Mount Sinai
-
Contact:
- Erin Paul, MD
- Email: Erin.Paul@mssm.edu
-
Principal Investigator:
- Erin Paul, MD
-
-
Ohio
-
Cleveland, Ohio, United States, 44195
- Recruiting
- Cleveland Clinic Lerner College of Medicine
-
Contact:
- Rukmini Komarlu, MD
- Email: komarlr@ccf.org
-
Principal Investigator:
- Rukmini Komarlu, MD
-
Cleveland, Ohio, United States, 44106
- Recruiting
- UH Rainbow Babies / Children's Hospital
-
Contact:
- James Strainic, MD
- Email: James.Strainic@UHhospitals.org
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Principal Investigator:
- James Strainic, MD
-
-
Tennessee
-
Nashville, Tennessee, United States, 37232
- Recruiting
- Vanderbilt University Medical Center
-
Contact:
- Stacy Stratemann-Killen, MD
- Email: stacy.stratemann@vumc.org
-
Principal Investigator:
- Stacy Stratemann-Killen, MD
-
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Texas
-
Houston, Texas, United States, 77030
- Recruiting
- Baylor College of Medicine
-
Contact:
- Tam Doan, MD
- Email: tam.doan@bcm.edu
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Principal Investigator:
- Tam Doan, MD
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Sub-Investigator:
- Shreya Sheth, MD
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Utah
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Salt Lake City, Utah, United States, 84102
- Recruiting
- University of Utah Health
-
Contact:
- Whitnee Hogan, MD
- Email: whitnee.hogan@hsc.utah.edu
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Principal Investigator:
- Whitnee Hogan, MD
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Vermont
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Burlington, Vermont, United States, 05401
- Recruiting
- University of Vermont Children's Hospital
-
Contact:
- Caitlin Haxel, MD
- Email: caitlin.haxel@uvmhealth.org
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Principal Investigator:
- Caitlin Haxel, MD
-
-
Virginia
-
Norfolk, Virginia, United States, 23507
- Recruiting
- Eastern Virginia Medical School (EVMS)
-
Sub-Investigator:
- Alfred Abuhamad, MD
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Contact:
- Elena Sinkovskaya, MD
- Email: sinkove@evms.edu
-
Contact:
- Alfred Abuhamad, MD
- Email: abuhamaz@evms.edu
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Principal Investigator:
- Elena Sinkovskaya, MD
-
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Washington
-
Seattle, Washington, United States, 98105
- Not yet recruiting
- Seattle Children's Hospital
-
Contact:
- Bhawna Arya, MD
- Email: Bhawna.Arya@seattlechildrens.org
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Principal Investigator:
- Bhawna Arya, MD
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- Provision of signed and dated informed consent form
- Stated willingness to comply with all study procedures and availability for the duration of the study
- Be <18 weeks pregnant at the time of enrollment
- Titer of anti-Ro 52 or 60 antibodies ≥1,000 EU
- Any positive titer of anti-Ro if a history of a previously affected child
- Ability to take oral medication and be willing to adhere to the dexamethasone and IVIG protocols.
- Ability to perform Doppler fetal heart rate and rhythm monitoring in the ambulatory setting,
- Ability to send an audiotext message by cell phone therefore the participant will be informed that they need a phone with texting capabilities. Located within 6 hours drive of the participating pediatric cardiology site
- Be ≥18 years of age
Exclusion Criteria:
- Multi-fetal pregnancy
- Known allergic reactions to components of IVIG, or dexamethasone or maternal IgA deficiency
- Fetal conduction system disease already present in the current pregnancy
- Any women who in the opinion of the investigator cannot understand the consent form or be able to perform thrice daily home monitoring or recognize an abnormal fetal heart rate or rhythm
- Women prisoners
- Treatment with >20 mg/prednisone q day or with any dose of fluorinated steroids at enrollment
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Mothers with Fetuses Who Have 2° AVB or AV interval > 170ms
|
In mother in whom 2° AVB or AV interval >170 ms has been diagnosed in the fetus: Dexamethasone 8 mg po/day for 10 days. Then dexamethasone 4 mg po/ day through 28 weeks 6 days gestational age (GA); then 3 mg/day from 29 wks 0 days to 29 wks 6 days GA; then 2 mg/day until delivery In a mother in whom 2° AVB has been diagnosed in the fetus: One dose of IVIG [1g/kg of maternal weight (max dose 70 g)] at diagnosis of 2° AVB (within 12 hours of detection by mother via home monitoring and within 6 hours of confirmation by echocardiogram). A fetal AV interval > 170 ms will not be treated with maternal IVIG, only dexamethasone. |
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Percentage of 2° AVB subjects with NR (1:1 AV conduction) at birth
Time Frame: up to 25 weeks post-enrollment
|
The presence of NR (normal rhythm) will be determined by electrocardiogram (ECG)
|
up to 25 weeks post-enrollment
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Percentage of 2° AVB subjects who maintain NR at age 1 year.
Time Frame: 1 year post-birth
|
The presence of NR will be determined by ECG
|
1 year post-birth
|
Percentage of AV interval > 170 msec subjects with NR at birth
Time Frame: At birth
|
AV intervals will be determined by EKG
|
At birth
|
Incidences of isolated extra-nodal cardiac disease
Time Frame: up to 1 year post-birth
|
Extra-nodal cardiac disease includes: Endocardial fibroelastosis, dilated cardiomyopathy, and AV valve insufficiency.
Isolated exta-nodal cardiac disease will be determined by echocardiogram.
|
up to 1 year post-birth
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Jill Buyon, MD, NYU Langone Health
- Principal Investigator: Bettina Cuneo, MD, University of Colorado, Denver
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Estimated)
Study Completion (Estimated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Pathologic Processes
- Heart Diseases
- Cardiovascular Diseases
- Arrhythmias, Cardiac
- Cardiac Conduction System Disease
- Heart Block
- Atrioventricular Block
- Physiological Effects of Drugs
- Autonomic Agents
- Peripheral Nervous System Agents
- Anti-Inflammatory Agents
- Antineoplastic Agents
- Antiemetics
- Gastrointestinal Agents
- Glucocorticoids
- Hormones
- Hormones, Hormone Substitutes, and Hormone Antagonists
- Antineoplastic Agents, Hormonal
- Dexamethasone
Other Study ID Numbers
- 20-00363
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
IPD Sharing Time Frame
IPD Sharing Access Criteria
IPD Sharing Supporting Information Type
- STUDY_PROTOCOL
- SAP
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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