- 1. The subject has documented T1D, as defined by the American Diabetes Association and World Health Organization (ADA/WHO) for at least six month prior to study enrolment 2. Documented evidence should exist within the patient history of T1D 3. The subject is between six and 15 years of age (inclusive) at the time of enrolment 4. The subject has been treated with an insulin pump for at least 3 months 5. The subject has an A1C value between 6.3 and 10% (both inclusive) based on analysis from the local laboratory. A1C testing must follow National Glycohemoglobin Standardization Program (NGSP) standards.