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Diabetes Discoveries & Practice Blog

Islet Transplantation Improves Quality of Life for People with Hard-to-control Type 1 Diabetes

Faded blue background with title, “Islet Transplantation in Type 1 Diabetes”. Image of Pancreas with pancreatic islets emphasized and an arrow pointing to a normal islet microscopic image on the left side. The normal islet features the beta, alpha and delta cells as well as the blood vessels in blue, light red, purple and dark red colors, respectively. Next to this image is another microscopic image of type 1 diabetes in an islet cell. This image shows the beta cells destroyed in a gray color.

NIH-funded study finds consistent, dramatic improvements among clinical trial participants.

According to a study published online March 21 in Diabetes Care, quality of life for people with type 1 diabetes who had frequent severe hypoglycemia improved consistently and dramatically following transplantation of insulin-producing pancreatic islets. Islet recipients reported better overall health status after transplant, despite the need for lifelong treatment with immune-suppressing drugs. These improvements were observed even among transplant recipients who still required insulin therapy to manage their diabetes.

Previously reported clinical outcomes show that islet transplantation prevents severe hypoglycemia and improves blood glucose awareness and control. All 48 study participants in the current Phase 3 trial received at least one islet transplant. Researchers found that, 1 year after the first transplant:

  • 42 participants (88%) were free of severe hypoglycemic events and had established near-normal blood glucose control and restored awareness of hypoglycemia.
  • Approximately half of the transplant recipients needed to continue taking insulin to control their blood glucose levels.

According to study authors, the elimination of severe hypoglycemia and the associated fears accounted for these improvements, appearing to outweigh concerns about the need to continue insulin injections.

Islet transplantation is an investigational therapy in the United States. While promising for people whose type 1 diabetes cannot be controlled with standard treatments, the procedure is not appropriate for most people with type 1 diabetes due to its associated risks.


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