NCT05643235 · Northwell Health
Implanted Loop Recorders for Detection and Management of Arrhythmia With Bruton Tyrosine Kinase Inhibitors
What this study is about
This study will enroll patients initiating Bruton Tyrosine Kinase (BTK) inhibitors without history of documented arrhythmia while on therapy using the Medtronic LINQ-2 insertable cardiac monitor (ILR). The incidence of new onset atrial fibrillation (AF) and other arrhythmia will be determined. Actions taken in response to device detected arrhythmia will be recorded.
View original scientific description
This study will enroll patients initiating Bruton Tyrosine Kinase (BTK) inhibitors without history of documented arrhythmia while on therapy using the Medtronic LINQ-2 insertable cardiac monitor (ILR). The incidence of new onset atrial fibrillation (AF) and other arrhythmia will be determined. Actions taken in response to device detected arrhythmia will be recorded.
Interventions
DEVICE
Medtronic LINQ-2 Insertable Cardiac Monitor (ILR)
Patients initiating BTK inhibitors will be offered the option of monitoring using the Medtronic Insertable Cardiac Monitor (ILR). The device will be implanted by a certified and credentialed electrophysiologist to enable monitoring to begin at least 24 hours prior to the first administration of the BTK inhibitor. Monitoring data will be collected prospectively until the patient withdraws consent, the device is removed, or up to 60 months
Primary outcome measures
Incidence of device detected atrial fibrillation (AF)
Time frame: at 18 months after start of BTK inhibitor
Incidence of AF lasting 6 or more minutes at 18 months: each arrhythmic episode detected by the patient's device will be reviewed to determine if it is 1) an actual AF episode, and 2) is at least 6 minutes in duration.
Long term Incidence of device detected AF
Time frame: up to 60 months after device implantation
Incidence of AF lasting 6 or more minutes up to 60 months: each arrhythmic episode detected by the patient's device will be reviewed to determine if it is 1) an actual AF episode, and 2) is at least 6 minutes in duration.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Willing to sign and date consent form,
- Willing to be remotely monitored
- Initiating BTK inhibitor for approved condition (i.e. CLL, Waldenstrom's, etc)
- Willing to have Medtronic cardiac monitor inserted to allow at minimum 24 hours continuous monitoring prior to initiating BTK inhibitor
Exclusion criteria
- Documented AF/VA in past 12 months
- Cerebral Vascular Accident (CVA) or Transient Ischemic Attack (TIA) in past year
- Has current implanted pulse generator, defibrillator, pacemaker, or resynchronization device
- heart surgery within past 90 days
- Myocardial Infarction within past 90 days
- Patient is taking an anti-arrhythmic or anticoagulant
- has concomitant condition that precludes safe participation in study (substance abuse, etc)
- Enrollment in separate study that could confound results of this study
Where
- New Hyde Park, New York
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Sep 18, 2025 · Source of record for eligibility and locations