The Lira Pump Trial

Inclusion Criteria: * Type 1 diabetes ≥ 1 year * BMI \> 25 kg/m2 * Insulin pump ≥ 1 year * HbA1c \> 58 mmol/mol * Use of carbohydrate counting and the insulin pump bolus calculator Exclusion Criteria: * Gastroparesis * Impaired renal function (eGFR \< 60 ml/min/1.73m2) * Liver disease with ALAT \> 2.5 times the upper limit of the reference interval * Acute or chronic pancreatitis or history of chronic pancreatitis or idiopathic acute pancreatitis * Inflammatory bowel disease * History of cancer (except basal cell skin cancer) which in the investigators opinion could interfere with the results of the trial, or cancer during the past 5 years * Thyroid adenoma * Subjects with personal or family history of MTC or MEN2 * Use of anti-diabetic medicine (other than insulin), corticosteroids or other drugs affecting glucose metabolism during the study period or within 30 days prior to study start * Known or suspected alcohol or drug abuse * Other concomitant medical or psychological condition that according to the investigator's assessment makes the patient unsuitable for study participation * Females of childbearing potential who are pregnant, breast-feeding or intend to become pregnant or are not using adequate contraceptive methods. * Simultaneous participation in any other clinical intervention trial * Known or suspected hypersensitivity to Liraglutide * Inability to understand the patient information and to give informed consent * Acute treatment required proliferative retinopathy or maculopathy (macular oedema) * Any Cardiac disorder which in the investigators opinion could interfere with the safety and results of the trial.