CClinicalTrials.gg
Enrolling by invitationNCT03206502Updated Aug 24, 2020

Embrace: Seizure Characterization

An interventional study of Embrace + Alert App in Epilepsy, sponsored by Empatica, Inc.. Enrolling by invitation. Open to participants aged 1 Year to 99 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-08-24.

Sponsored by Empatica, Inc. · Not applicable, Interventional, and Diagnostic

From the registry’s dates

  • Primary completion was expected by May 2026, 5 months ago, but the record still lists the study as enrolling by invitation.
Phase
Not applicable
Study type
Interventional
Enrollment
100,000
Allocation
Not applicable
Ages
1 Year to 99 Years
Sex
All
01

Study summary

The study is intended to characterize sleep, stress, and seizures in daily life with the Empatica Embrace watch and smartphone-based diary-alert system. The primary study objective is to collect and validate biometric signals from epilepsy patients using the Empatica Embrace watch and compare them to ictal events captured from human (patient and caregiver) reports.

Read the detailed description

Patients use the Embrace sensor with a smartphone app, "Alert". The sensor attempts to capture convulsive seizure events such as generalized tonic-clonic seizures (GTCS's), and to initiate an alert when such an event is captured. Patients can also enter seizures (captured or not, GTCS or not) into the "Mate" diary, and they can cancel or mark false alarms if Embrace triggered a false alarm.

02

Conditions studied

  • Epilepsy

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03

In context

Seizures

881 studies on the registry are indexed under Seizures; 143 are open to participants now.

This study's planned enrollment of 100,000 is above the median of 64 across 610 interventional studies indexed under Seizures.

Browse Seizures studies →

Lead sponsor

Empatica, Inc. is the lead sponsor of 5 studies on the registry; 2 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
1 Year to 99 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Participants must be between the ages of 1-99
  • Anyone (healthy or not) can participate
  • Adult participant must either be able to give consent or must have an acceptable surrogate capable of giving consent on their behalf.
  • Participants under age 18 must have an adult guardian give informed consent, and if capable, the patient must give informed assent.
  • Participants with GTCS must have a functioning smartphone (iOS or Android) that can be paired with the Embrace over a Bluetooth Low Energy connection and agree that it can be kept on or near their person.
  • Participants with GTCS (or their surrogate) must be able to identify one or more "designated frequent caregivers," who has a functioning phone, agrees to keep it regularly charged, agrees to receive alerts, and agrees to respond to alerts promptly to the best of their ability.
  • Participants must be fluent in the language of the consent forms (Currently limited to English but Spanish and other languages are planned).
  • Participants must reside in the United States.

Exclusion criteria

Exclusion Criteria:

  • Participants must not have broken or injured skin at the wrist or leg location where Embrace is worn, and they must be able to tolerate wearing Embrace snugly for long periods of time. Thus, they should not have allergies to the material composition of the Embrace watch, or discomfort wearing a wristwatch or leg-band device.
  • Participants should not be homeless.
  • Participants should not have active dependence on substances that are not currently prescribed by their doctor (e.g. alcohol, pain medications, illegal drugs) or be taking substances that they are not willing to disclose as a study participant.
  • Participants must not be pregnant or planning to become pregnant within six months at the time of screening.
05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
100,000 participants (estimated)

Study arms

  • Experimental
    Embrace+Alert App

    Participants are allowed to enter the trial (to use Embrace+Alert app) whether or not they have epilepsy. People without epilepsy may use Alert in this trial even though they are not expected to have seizures, as long as they are willing to mark false positives. Since many people with epilepsy live active lives and appear perfectly healthy outwardly, it is important that their active lifestyle data not trigger false alarms. Allowing healthy participants without epilepsy to contribute active lifestyle data helps us make the detection algorithm even stronger and better.

    Device: Embrace + Alert App

Interventions

  • DeviceEmbrace + Alert App

    Participants will wear an Embrace smartwatch to collect data, and will provide survey/diary information on the occurrence of seizures. The device sends data to the Alert app, which issues either true detections or false alarms when it detects a possible convulsive seizure. Participants are asked to either cancel (in real time) or mark (at a later time) all false alarms using the Alert app.

06

What researchers measure

Primary outcomes

  1. Sensitivity of the GTCS detection of the Embrace + Alert app

    The number of GTCS automatically detected by Embrace will be compared to the total recorded by the wearer+caregiver in a seizure diary. This fraction is the sensitivity.

    Time frame: The primary outcome is assessed continuously over the trial period (each new seizure is counted and summed for each person; the average time period is 6 months)

Secondary outcomes

  1. False alarm rate of the GTCS detection of the Embrace + Alert app

    The number of alerts elicited by Embrace+Alert app that do NOT correspond to convulsive seizures marked in the seizure diary are "false alarms". False alarms can also be explicitly marked by patients.

    Time frame: The secondary outcome is assessed continuously over the trial period (each false alarm is counted and summed for a running total within each person; the average time period is 6 months)

Other outcomes

  1. System Usability

    The System Usability Scale will be given to assess system usability

    Time frame: After one month of use.

07

Study locations

No study locations are listed for this record.

08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 24, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03206502
Lead sponsor
Empatica, Inc.
Responsible party
Sponsor
First posted
Jul 2, 2017
Start date
May 2016
Primary completion
May 2026 (estimated)
Completion
May 2026 (estimated)
Last update
Aug 24, 2020

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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No contact was published for this record. The registry link below has the sponsor’s details.

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