A Research Trial of Aralast NP in New Onset Diabetes (RETAIN) - Part II (RETAIN)
Aralast NP (alpha-1 antitrypsin, AAT), an alpha-1 proteinase inhibitor (human), was the drug to be tested in this clinical trial. Aralast NP is an anti-inflammatory drug that affects the cells that are thought to be involved in the development of type 1 diabetes mellitus (T1DM, T1D). This study, known as RETAIN, was planned as a two-part trial to investigate the effect of Aralast NP on preserving beta cell function and to determine if the intervention would slow the progression of type 1 diabetes.
Part I of this trial (NCT 01183468) was an open-label, safety and dose level study consisting of two groups. After completion of Part I, including a satisfactory safety review, enrollment in Part II was to begin. Part II was designed as a two-arm, double-blind, placebo-controlled clinical trial, and participants were to be randomly assigned to either the Aralast NP treatment or placebo group.
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
|Official Title:||Effect of Intravenous Alpha-1 Antitrypsin on Preserving Beta-cell Function in New-onset Type 1 Diabetes Mellitus (ITN041AI)- Part II|
- Mixed-Meal Tolerance Test (MMTT)-Stimulated 2-hour C-peptide Area Under the Curve (AUC) [ Time Frame: Week 52 ]
- MMTT-Stimulated Peak and 4-hour C-peptide AUC [ Time Frame: Weeks 52 and 104 ]
- MMTT-Stimulated 2-hour C-Peptide AUC Assessed Over Time [ Time Frame: Weeks 0, 14, 26, 52, and 104 ]
- Insulin Use in Units Per Kilogram Body Weight Per Day [ Time Frame: Weeks 52 and 104 ]
- Hypoglycemic Events Occurring from Randomization to End of Trial [ Time Frame: Throughout the Study ]
- Glycosylated Hemoglobin (HbA1c) Levels [ Time Frame: Weeks 52 and 104 ]
- Emergence of Anti-Alpha 1-Antitrypsin (AAT) Antibodies [ Time Frame: Throughout the Study ]
- Frequency and Severity of All Adverse Events (AEs) [ Time Frame: Throughout the study ]
- Changes in D-dimer Levels Indicating Alteration in Coagulant/Anticoagulant Balance [ Time Frame: Throughout the study ]
- Pharmacokinetic Parameters of Aralast NP [ Time Frame: Throughout the study ]
|Study Start Date:||October 2010|
|Study Completion Date:||August 2014|
|Primary Completion Date:||August 2014 (Final data collection date for primary outcome measure)|
Experimental: Aralast NP
Participants will receive Aralast NP (90mg/kg) intravenously once a week for 12 weeks.
Drug: Aralast NP
Participants will receive IV infusions of Aralast NP (90mg/kg) once a week for 12 weeks.
Placebo Comparator: Placebo
Participants will receive placebo intravenously once a week for 12 weeks.
Participants will receive IV infusions of placebo once a week for 12 weeks.
Other Name: Placebo for Aralast NP
T1D is an autoimmune disease. This means that your immune system (the part of your body that helps fight infections) mistakenly attacks the cells that produce insulin (beta cells in the pancreas). As beta cells are destroyed by your immune cells, your ability to produce insulin is decreased. Insulin helps keep blood glucose levels normal.
Individuals with T1D who have the ability to produce some of their own insulin (even though they still need to take insulin) may be able to achieve better glucose control than people who produce no insulin at all. Better glucose control has been shown to reduce the long-term complications of diabetes. Previous research has shown that giving medicines to affect the immune system soon after type 1 diabetes is diagnosed may stop, delay or decrease the destruction of beta cells, resulting in better glucose control.
In mouse models of disease, alpha-1 proteinase inhibitors have been shown to reverse new-onset diabetes and induce a state of self-tolerance. The RETAIN clinical trial was intended to investigate the effect of Aralast NP on preserving beta cell function and slowing the progression of T1D.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01183455
|United States, California|
|University of California San Diego|
|La Jolla, California, United States, 92093|
|United States, Colorado|
|Barbara Davis Center|
|Aurora, Colorado, United States, 80045|
|United States, Connecticut|
|New Haven, Connecticut, United States, 06511|
|United States, Georgia|
|Atlanta Diabetes Associates|
|Atlanta, Georgia, United States, 30309|
|Atlanta, Georgia, United States, 30322|
|United States, Iowa|
|University of Iowa|
|Iowa City, Iowa, United States, 52242|
|United States, Maryland|
|University of Maryland Medical Center|
|Baltimore, Maryland, United States, 21201|
|Calvert Memorial Hospital|
|Prince Frederick, Maryland, United States, 20678|
|United States, Massachusetts|
|Massachusetts General Hospital|
|Boston, Massachusetts, United States, 02114|
|Joslin Diabetes Center|
|Boston, Massachusetts, United States, 02215|
|University of Massachusetts Medical School|
|Worchester, Massachusetts, United States, 01655|
|United States, New York|
|New York, New York, United States, 10027|
|United States, Ohio|
|Nationwide Children's Hospital|
|Columbus, Ohio, United States, 43205|
|United States, Pennsylvania|
|The Children's Hospital of Philadelphia|
|Philadephia, Pennsylvania, United States, 19104|
|United States, Texas|
|Cetero Research San Antonio|
|San Antonio, Texas, United States, 78229|
|Study Chair:||Gordon Weir, MD||Joslin Diabetes Center|