Conventional Lead Opposed to Novel ECG (CLONE)
CLONE
CLONE
Sponsor study identifier
observational
40
1 country
2
Study Start
February 18, 2026
Actual (reported)Primary Completion
March 24, 2026
Actual (reported)Study Completion
August 1, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
To blindly assess, beat-by-beat, standard ECG intervals (QRS intervals, PQ intervals, and P wave durations) of paired standard lead v4 with paired HeartWatch signals over 20 to 30 seconds of noise-free data.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
August 1, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
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Some registry-reported names shown below are not yet linked in this graph.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
February 18, 2026
Actual (reported)March 24, 2026
Actual (reported)May 27, 2026
Actual (reported)June 3, 2026
Actual (reported)August 1, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Standard ECG and HeartWatch interval duration assessment in standard position
The three co-primary efficacy endpoints for this study are beat-by-beat QRS intervals, PQ intervals, and P wave durations in continuous ECG (HeartWatch vs. lead v4 of a standard 12-lead ECG) in a supine position with the HeartWatch in the standard location.
The data for this outcome will be collected for each participant in their testing visit. All data is then assessed within two weeks of the data collection testing visit.
ECG interval assessment with the heart watch and the 12 Lead ECG in non traditional positions.
The data for this outcome will be collected for each participant in their testing visit. All data is then assessed within two weeks of the data collection from their testing visit.
12 Lead ECG and Kardia signal duration analysis from supine and standing positions
The data for this outcome will be collected for each participant in their testing visit. All data is then assessed within two weeks of the data collection from their testing visit.
Device related adverse events.
Adverse events will be collected and assessed from all data collection visits immediately following every data collection visit. All adverse events will be followed until resolved or for up to 30 days after the event.
Volunteers undergoing a conventional 12-lead ECG who agree to wear a HeartWatch and use a Kardia mobile device during that ECG recording.
A Health-Canada and FDA-approved 12-lead ECG system (GE Healthcare, MAC 5500 or equivalent) will be used to collect the 10-sec digital rhythm strips in the noted supine and standing positions. A total of twenty-four (24) recordings, four from each of position, will be collected from each consenting participant: * Supine with HeartWatch in the recommended position * Standing with HeartWatch in the recommended position * Supine with HeartWatch in a one inch (2.5 cm) externally rotated position * Supine with HeartWatch in a one inch (2.5 cm) internally rotated position * Supine while collecting a 30-sec Kardia recording * Standing while collecting a 30-sec Kardia recording
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Volunteers undergoing a conventional 12-lead ECG who agree to wear a HeartWatch and use a Kardia mobile device during that ECG recording.
University of Calgary
Calgary, Alberta, T2N 1N4, Canada
University of Calgary
Calgary, Alberta, T2N 4N1, Canada
40 participants (actual enrollment reported by the registry).
First Submitted
May 27, 2026
First Posted
June 3, 2026
Study Start
February 18, 2026
Actual (reported)BDx 7 Day ECG Patch: Electrode Adhesion Clinical Study
Contact the study team to confirm eligibility.
Primary Completion
March 24, 2026
Actual (reported)Study Completion
August 1, 2027
EstimatedPlanned date reported by the registry; this milestone is not confirmed as achieved.
Last Updated
September 17, 2026
Record last verified: 2026-09
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Source: ClinicalTrials.gov.
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