Liraglutide and Insulin Therapy in Patients With Type 2 Diabetes
Liraglutide and Insulin Therapy in Patients With Type 2 Diabetes
Insulin therapy is frequently needed to achieve adequate glycaemic control in type 2
 diabetes. Although insulin is an effective treatment modality, this is often at the expense
 of significant weight gain. Weight gain is obviously undesirable in an already overweight
 population, but may also deter further optimization of insulin therapy. Large
 inter-individual differences exist in the level of weight gain after initiation of insulin
 therapy, but no clear predictive factors have prospectively been identified thus far.

 Liraglutide (Victoza®), a human glucagon-like peptide-1 (GLP-1) analogue, improves glycaemic
 control and reduces weight. We hypothesize that in patients who show (excessive) weight gain
 after introducing insulin therapy, adding liraglutide is effective in reversing body weight
 while preserving glycaemic control.
Patients with type 2 diabetes mellitus on short-term (≤ 12 months) insulin therapy with
 concomitant documented weight gain of ≥ 4 % body weight will be selected and treated with
 liraglutide 1.8 mg sc q.d. for 26 weeks and compared to patients receiving standard care
 (continuation of insulin therapy without liraglutide) in an open-label, randomized study.
 After 26 weeks, patients receiving standard care will subsequently be treated with
 liraglutide for 26 weeks. The group on active liraglutide treatment will continue for an
 additional 26 weeks. In this way all patients can benefit from liraglutide.

 All subjects will continue insulin therapy and oral hypoglycaemic agents (SU derivatives and
 metformin allowed) treatment. With respect to safety in order to avoid hypoglycaemic events,
 total insulin dose will be decreased by 20% when starting liraglutide. Within the first weeks
 after start of study medication patients will perform frequently self-measured capillary
 blood glucose profiles and will be instructed to adjust insulin dose if necessary. Initially,
 insulin dose will be adjusted weekly by telephone consultation. Thereafter, patients will
 perform blood glucose profiles prior to every outpatient visit. A liraglutide-insulin
 titration algorithm will be used to adjust insulin dose. Every 4-6 weeks patients will visit
 the hospital to assess body weight, to adjust insulin dose and to check for adverse events.
Inclusion Criteria:

 -  Patients with type 2 diabetes mellitus on short-term insulin therapy (≤ 12 months);
 all types of insulin allowed

 -  Documented insulin-associated weight gain ≥ 3.0 kg from the start of insulin therapy
 until inclusion

 -  Age 18-75 years

 -  BMI ≥ 25 kg/m2

 -  Stable glycaemic control mirrored by HbA1c ≥ 6.5 and ≤ 8.5 %

 Exclusion Criteria:

 -  Inability to provide informed consent

 -  Type 1 diabetes mellitus, MODY diabetes, or LADA diabetes (presence of anti-GAD)

 -  Presence of any medical condition that might interfere with the current study
 protocol.

 -  Inflammatory bowel disease (e.g. M. Crohn, ulcerative colitis)

 -  Recurrent hypoglycaemic events

 -  Diabetic gastroparesis

 -  Heart failure (LVEF ≤ 30%)

 -  Use of TZDs (glitazones), DDP-IV (dipeptidylpeptidase-inhibitor)

 -  Use of medication associated with impaired glucose metabolism including
 corticosteroids

 -  Pregnancy or breast-feeding (contraception of at least 3 months before inclusion is
 required for fertile women)

 -  Pre-existing thyroid disease

 -  Liver disease (aspartate aminotransferase or alanine aminotransferase level of more
 than three times the upper limit of normal range)

 -  Renal disease (creatinine > 130 µmol/l or MDRD-GFR <30 ml/min/1.73m2)