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A Pilot Study to Evaluate the Efficacy of an Ultralong-acting Insulin in Feline Diabetes

Status: Suspended

Species: Cat

Veterinary Speciality: Endocrinology/Metabolism, Internal Medicine


The purpose of this study is to determine how well a new form of long acting insulin regulates blood sugar (glucose) in cats with diabetes that are currently receiving standard twice per day insulin. The hope is that this new formulation will provide control over the blood glucose for one week.

Inclusion Criteria

Diabetic cats that are currently receiving insulin and their disease is stable.

Participation is limited to those clients that can travel to Grafton, MA for all required visits.

Exclusion Criteria

Diabetic cats not expected to live more than six month

History of diabetic ketoacidosis within the past two months

Patients with stage 3 or 4 IRIS renal disease

Heart failure

Cats receiving a daily insulin dose > 4units/kg

Use of corticosteroids or progestagens within the previous 2 months

ALT >4X the upper limit of normal

Intact females

Cats weighing less than 2kg (4.4 lbs)

Client Benefits

The potential benefit from enrolling in this clinical trial includes the ability for your cat to receive insulin once per week and have greater regulation of blood glucose compared to twice per day insulin. This may result in overall improvements in health if the blood glucose is more consistently regulated.

There are no costs associated with participation in this study, and should complications occur that are the direct result of the study, these will be covered. Health conditions unrelated to the study (i.e., bladder infection) will not be covered. Upon completion of the study on Day 14 (or beyond), you will receive a credit of $500 at the Foster Hospital for Small Animals that can be used for future treatment of your cat.

Sample or Data Requirements

If your cat is enrolled in the study, a number of blood tests will be performed (several of these are standard for cats with diabetes) prior to enrolling into the study to determine eligibility, then after enrollment for the study duration.  During the study, your cat will have 3mls (just over ½ tsp) of blood drawn weekly to monitor insulin concentrations and to check a blood glucose level. The study is a minimum of 2-3 weeks with one week of glucose monitoring to evaluate your cat’s current insulin regimen, followed by a switch to the new insulin, administered at Tufts, and a further week of glucose monitoring. Should you decide to stay in the study, your cat will receive an insulin injection once weekly at Tufts, for up to 3 more weeks. If your cat is doing well then the final study visit will take place 1 week after the fourth injection.  Each weekly visit will take between to 1 and 1.5 hours to complete. Lastly, we will ask you to keep a diary monitoring your pet’s health status.

Contact Info

For questions regarding the clinical trial please email the clinical trials technician, Diane Welsh at:

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