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DRN 767 (Regulatory T cells in Type 1 diabetes patients treated with IL-2)

Adaptive study of IL-2 dose on regulatory T cells in type 1 diabetes (DILT1D)

Portfolio Eligibility
Automatically eligible
ISRCTN 27852285
MREC N° 13/EE/0020
UKCRN ID 13846
Research Summary
Type 1 diabetes is the most common severe chronic autoimmune disease worldwide and is caused by the autoimmune (loss of self tolerance) mediated destruction of the insulin producing pancreatic beta cells thus leading to insulin deficiency and development of hyperglycaemia. Currently, medical management of type 1 diabetes focuses on intensive insulin replacement therapy to limit complications (retinopathy, nephropathy, neuropathy); nevertheless clinical outcomes remain sub optimal. There are intensive efforts to design novel immunotherapies that can arrest the autoimmune process and thereby preserve residual insulin production leading to fewer complications and better clinical outcomes. The vast majority of genes that contribute to susceptibility to type 1 diabetes have been found to encode proteins involved in immune regulation and function. In particular, several susceptibility proteins are involved in the interleukin 2 (IL-2) pathway that regulates T cell activation and tolerance to self antigens. Aldesleukin (Proleukin) is a human recombinant IL-2 product produced by recombinant DNA technology using genetically engineered E. coli stain containing an analogue of the human interleukin-2 gene. There is substantial nonclinical, preclinical and clinical data that ultra low dose IL-2 (aldesleukin) therapy can arrest the autoimmune mediated destruction of pancreatic beta cells by induction of functional T regulatory cells. However, prior to embarking on large proof of concept trials in type 1 diabetes it is essential that the optimum dose of IL-2 is determined. The objective of this study is to establish in patients with type 1 diabetes the optimal dose of IL-2 to administer in order to increase T regulatory cell response.
Study Type Interventional
Design Type Treatment
Disease(s) Other
Phase Experimental Medicine
Current Status Closed - follow-up complete
Closure Date 5/15/2014
Global Sample Size 40
Global Recruitment to Date
Geographical Scope Single Centre
Lead Country England
Study Website
Main Inclusion Criteria
• Type 1 diabetes
• 18-50 years of age
• Duration of diabetes less than 24 months from diagnosis
• One positive auto-antibody (anti-islet cell, anti-GAD, anti-IA2,
Main Exclusion Criteria
• Hypersensitivity to aldesleukin or any of the excipients
• History of severe cardiac disease
• History of malignancy within the past 5 years (with the exception of localized carcinoma of the skin that had been resected for cure or cervical carcinoma in situ
• History or concurrent use of immunosuppressive agents or steroids.
• History of unstable diabetes with recurrent hypoglycaemia
• Active Autoimmune, Hyper or hypothyroidism
• Active clinical infection
• Major preexisting organ dysfunction
• Previous organ allograft
• Females who are pregnant, lactating or intend to get pregnant during the study
• Male who intend to father a pregnancy during the study
• Donation of more than 500 ml of blood within 2 months prior to aldesleukin administration
• Participation in a previous therapeutic clinical trial within 2 months prior to aldesleukin administration
• Abnormal ECG
• Abnormal full blood count, chronic renal failure, and/or impaired liver function
• Positive HBsAg or HepC serology or HIV test
• Any medical history or clinically relevant abnormality that is deemed by the principal investigator and/or medical monitor to make the patient ineligible for inclusion because of a safety concern.
Chief Investigator(s)
Dr Frank Waldron-Lynch
Further details, please contact
Dr Frank Waldron-Lynch

University of Cambridge

Addenbrookes Hospital
Hills Road

Tel: 01223 762327
Funder(s) Wellcome Trust
Juvenile Diabetes Research Foundation Limited (JDRF)
NIHR Cambridge Biomedical Research Centre
Sponsor(s) Cambridge University Hospitals NHS Foundation Trust
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