Beat to Beat A Study in Paediatric, Adolescent and Young Adult Patients Who Are Undergoing or Have Undergone Cancer Therapy to Evaluate the Agreement Between QTc Measured Using 12 Lead Electrocardiogram (ECG) and a Wearable Device ECG

The app together with the wearable device will record a V1 (Left wrist) or V2 (left ankle) ECG reading. These measurements will be conducted on Day 1 and Day 4.

The 12 lead ECG will measure corrected QT interval by recording RR and QT intervals on Day 1 and Day 4. This will be performed within the same episode of care as the wearable device ECG recording. There is no need to perform both at exactly the same time point, but within a 15 minute window.