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Type 1 DiabetesPhase 1/2DPP-ⅣLADANCT01159847

Protective Effects of Sitagliptin on β Cell Function in Patients With Adult-onset Latent Autoimmune Diabetes (LADA)

A Phase 1/2 study testing sitagliptin and Insulin in people with Type 1 Diabetes, run by European Foundation for the Study of Diabetes at 1 site in China.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The aim of this study is to investigate the protective effects of sitagliptin on β cell function in patients with adult-onset latent autoimmune diabetes (LADA) and its mechanisms. Read more about this study

Who is it for?
Ages 25 to 70 years
Conditions the study is for
Type 1 Diabetes
What is being tested?
sitagliptin and Insulin
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
30 participants
Where
1 siteChina
Study dates
Jan 2010to Dec 2012
Phase
Phase 1/2
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 25 to 70 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Diabetes diagnosed according to the report of WHO in 1999.
  • Age at onset between 25~70 years.
  • Disease duration of less than 3 year.
  • No ketoacidosis within the first 6 months after diagnosis of diabetes.
  • GADA positive twice within one month.
  • Fasting C-peptide (FCP) level of 0.2 nmol/L or more.

Who cannot join

  • Insulin requirements more than 0.8 units/kg/day.
  • Evidence of chronic infection or acute infection affected blood glucose control within 4 weeks prior to visit 1.
  • History of any malignancy.
  • Pregnancy, breastfeeding or planned pregnancy within two years.
  • Secondary diabetes.
  • Congestive heart failure requiring pharmacologic treatment.
  • Renal disease or renal dysfunction or diabetic nephropathy suggested by serum creatinine levels≥1.5 mg/dL (132μmol/L) for males and ≥1.4mg/dL (123μmol/L) for females or abnormal creatinine clearance at Visit 1.
  • Concurrent medical condition that may interfere with the interpretation of efficacy and safety data during the study.

Trial locations and contacts

1 site in 1 country.

China1 site
  • Diabetes Center, Institute of Metabolism and Endocrinology, Second Xiangya Hospital, Central South University

    Changsha, Hunan, 410011

Other trials in China

About this study

The aim of this study is to investigate the protective effects of sitagliptin on β cell function in patients with adult-onset latent autoimmune diabetes (LADA) and its mechanisms.

Read the detailed description

Adult-onset latent autoimmune diabetes (LADA), etiologically belongs to type 1 diabetes (T1D), is characterized by the presence of islet autoantibodies, such as islet cell antibody (ICA) and glutamic acid decarboxylase antibody (GADA), and is prone to develop β-cell failure. The goals of treatment for LADA are suppression of autoimmune β cell destruction, preservation of islet function and prevention of diabetic complications. Recently two classes of compounds have been approved by the FDA as type 2 diabetes (T2D) therapeutics: the glucagon-like peptide-1 (GLP-1) receptor agonist (incretin mimetic) exenatide (Byetta) and the dipeptidyl peptidase IV (DPP-IV) inhibitor sitagliptin (Januvia) and vildagliptin (Galvus). They have been shown to reduce HbA1c, fasting glucose and to improve β cell function in T2D patients, as a mono-therapy or in combination with metformin or thiazolidinediones. Besides, in vitro studies showed incretin-based therapy can stimulate β-cell proliferation and survival, increase β cell insulin content and inhibit apoptosis. Moreover, several short-term pilot studies suggest GLP-1 may also have the potential for treating T1D. Several findings suggest that Ex-4 may also act as a regulator of the immune response in addition to its potential effects on β cell proliferation. Therefore, we hypothesized DPP-IV inhibitors might provide therapeutic advantages in T1D though no study has been reported. Besides the β cell function, another important target is insulin sensitivity. As for DPP-IV inhibitor, clinical trials demonstrated their beneficial effects on insulin sensitivity in subjects with T2D and impaired fasting glucose (IFG) and in diabetic rat model. We'd like to further explore the possible effect of sitagliptin on insulin sensitivity in LADA patients by homeostasis model assessment for insulin resistance (HOMA-IR) index and euglycemic clamp technique. In addition, the systemic inflammation associated with a wide array of plasma proteins and pro-inflammatory cytokines (i.e., C reactive protein (CRP), tumor necrosis factor-α (TNF-α), interleukin-6) play an additional role in the pathogenesis of insulin resistance in diabetes. It will be of interest to investigate the adipokines and proinflammatory cytokines after the sitagliptin therapy in the study. Hence, we aim to explore the effects of sitagliptin plus insulin on β cell function, insulin sensitivity, pro-inflammatory cytokines and immune regulation including Teff and Treg frequency, and function in patients with LADA.

Conditions
Type 1 Diabetes
Being tested
sitagliptin, Insulin
Keywords
sitagliptin, LADA, C-Peptide, Flow Cytometry, ELISPOT
Medical subject headings
Diabetes Mellitus, Type 1

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

Study groups in NCT01159847
Study groupRoleWhat they receive
SitagliptinExperimentalPatients will receive insulin therapy with sitagliptin.
Receives: Drug: sitagliptin; Drug: Insulin
InsulinActive comparatorPatients will receive insulin therapy without sitagliptin.
Receives: Drug: Insulin

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. The effects of sitagliptin on β cell function and insulin sensitivity of LADA patients

    1. The assessment of the change of β cell function in patients with LADA treated with sitagliptin plus insulin by the standardized mixed meal stimulation test and insulin sensitivity by HOMA-IR.
    2. The assessment of the change of insulin sensitivity in LADA patients by sequential insulin infusion with the euglycemic glucose clamp technique.

    Measured: 2 years

Secondary outcomes (5)
  1. The possible immunomodulatory effects of sitagliptin on LADA patients

    The change of the frequency of pathogenic Teff (CD4+Th1, Th2, Th17 and CD8+) cells and CD4+CD25+Foxp3+Treg cells before and after sitagliptin treatment in LADA patients.

    Measured: 2 years

  2. The possible immunomodulatory effects of sitagliptin on LADA patients

    Effect of sitagliptin on cytokine production of Teff and Treg cells before and after sitagliptin treatment in LADA patients.

    Measured: 2 years

  3. The possible immunomodulatory effects of sitagliptin on LADA patients

    Effect of sitagliptin on Foxp3 mRNA expression of Treg cells and RORγT mRNA expression of Th17 cells before and after sitagliptin treatment in LADA patients.

    Measured: 2 years

  4. The possible immunomodulatory effects of sitagliptin on LADA patients

    The comparison of glutamic acid decarboxylase 65 (GAD65) reactive interferon-γ-Th1, IL-4-Th2, IL-17-Th17 and IL-10-Treg cells detected by enzyme-linked immunospot (ELISPOT) before and after sitagliptin treatment in LADA patients.

    Measured: 2 years

  5. The possible immunomodulatory effects of sitagliptin on LADA patients

    The change of the adiponectin, IL-6, IL-17 and CRP etc. before and after the sitagliptin treatment in LADA patients.

    Measured: 2 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 Jul 2010 (estimated)
  2. Study startJan 2010
  3. Primary completionJul 2012
  4. Study completionDec 2012

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1/2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
30 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01159847
Sponsor's protocol ID
EFSD DPP-Ⅳ LADA
Acronym
DPP-ⅣLADA
Status last verified
Jul 2018
First submitted
5 May 2010
Last updated
31 Jul 2018
Results posted
No
Data monitoring committee
Yes

Publications

  • Tuomi T, Groop LC, Zimmet PZ, Rowley MJ, Knowles W, Mackay IR. Antibodies to glutamic acid decarboxylase reveal latent autoimmune diabetes mellitus in adults with a non-insulin-dependent onset of disease. Diabetes. 1993 Feb;42(2):359-62. doi: 10.2337/diab.42.2.359.

    PubMed 8425674
  • Dupre J. Glycaemic effects of incretins in Type 1 diabetes mellitus: a concise review, with emphasis on studies in humans. Regul Pept. 2005 Jun 15;128(2):149-57. doi: 10.1016/j.regpep.2004.06.003.

    PubMed 15780434
  • Dupre J, Behme MT, Hramiak IM, McFarlane P, Williamson MP, Zabel P, McDonald TJ. Glucagon-like peptide I reduces postprandial glycemic excursions in IDDM. Diabetes. 1995 Jun;44(6):626-30. doi: 10.2337/diab.44.6.626.

    PubMed 7789625
  • Behme MT, Dupre J, McDonald TJ. Glucagon-like peptide 1 improved glycemic control in type 1 diabetes. BMC Endocr Disord. 2003 Apr 10;3(1):3. doi: 10.1186/1472-6823-3-3.

    PubMed 12697069
  • Creutzfeldt WO, Kleine N, Willms B, Orskov C, Holst JJ, Nauck MA. Glucagonostatic actions and reduction of fasting hyperglycemia by exogenous glucagon-like peptide I(7-36) amide in type I diabetic patients. Diabetes Care. 1996 Jun;19(6):580-6. doi: 10.2337/diacare.19.6.580.

    PubMed 8725855
  • Zhang J, Tokui Y, Yamagata K, Kozawa J, Sayama K, Iwahashi H, Okita K, Miuchi M, Konya H, Hamaguchi T, Namba M, Shimomura I, Miyagawa JI. Continuous stimulation of human glucagon-like peptide-1 (7-36) amide in a mouse model (NOD) delays onset of autoimmune type 1 diabetes. Diabetologia. 2007 Sep;50(9):1900-1909. doi: 10.1007/s00125-007-0737-6. Epub 2007 Jul 14.

    PubMed 17632702
  • Pospisilik JA, Martin J, Doty T, Ehses JA, Pamir N, Lynn FC, Piteau S, Demuth HU, McIntosh CH, Pederson RA. Dipeptidyl peptidase IV inhibitor treatment stimulates beta-cell survival and islet neogenesis in streptozotocin-induced diabetic rats. Diabetes. 2003 Mar;52(3):741-50. doi: 10.2337/diabetes.52.3.741.

    PubMed 12606516
  • Pospisilik JA, Ehses JA, Doty T, McIntosh CH, Demuth HU, Pederson RA. Dipeptidyl peptidase IV inhibition in animal models of diabetes. Adv Exp Med Biol. 2003;524:281-91. doi: 10.1007/0-306-47920-6_34. No abstract available.

    PubMed 12675250
  • Kim SJ, Nian C, Doudet DJ, McIntosh CH. Inhibition of dipeptidyl peptidase IV with sitagliptin (MK0431) prolongs islet graft survival in streptozotocin-induced diabetic mice. Diabetes. 2008 May;57(5):1331-9. doi: 10.2337/db07-1639. Epub 2008 Feb 25.

    PubMed 18299314
  • Flentke GR, Munoz E, Huber BT, Plaut AG, Kettner CA, Bachovchin WW. Inhibition of dipeptidyl aminopeptidase IV (DP-IV) by Xaa-boroPro dipeptides and use of these inhibitors to examine the role of DP-IV in T-cell function. Proc Natl Acad Sci U S A. 1991 Feb 15;88(4):1556-9. doi: 10.1073/pnas.88.4.1556.

    PubMed 1671716
  • Reinhold D, Bank U, Buhling F, Lendeckel U, Faust J, Neubert K, Ansorge S. Inhibitors of dipeptidyl peptidase IV induce secretion of transforming growth factor-beta 1 in PWM-stimulated PBMC and T cells. Immunology. 1997 Jul;91(3):354-60. doi: 10.1046/j.1365-2567.1997.d01-2258.x.

    PubMed 9301523
  • Kahne T, Neubert K, Faust J, Ansorge S. Early phosphorylation events induced by DPIV/CD26-specific inhibitors. Cell Immunol. 1998 Oct 10;189(1):60-6. doi: 10.1006/cimm.1998.1355.

    PubMed 9758695
  • Yang Z, Zhou Z, Huang G, Ling H, Yan X, Peng J, Li X. The CD4(+) regulatory T-cells is decreased in adults with latent autoimmune diabetes. Diabetes Res Clin Pract. 2007 Apr;76(1):126-31. doi: 10.1016/j.diabres.2006.08.013. Epub 2006 Sep 26.

    PubMed 17005288
  • Xue S, Wasserfall CH, Parker M, Brusko TM, McGrail S, McGrail K, Moore M, Campbell-Thompson M, Schatz DA, Atkinson MA, Haller MJ. Exendin-4 therapy in NOD mice with new-onset diabetes increases regulatory T cell frequency. Ann N Y Acad Sci. 2008 Dec;1150:152-6. doi: 10.1196/annals.1447.049.

    PubMed 19120286
  • Utzschneider KM, Tong J, Montgomery B, Udayasankar J, Gerchman F, Marcovina SM, Watson CE, Ligueros-Saylan MA, Foley JE, Holst JJ, Deacon CF, Kahn SE. The dipeptidyl peptidase-4 inhibitor vildagliptin improves beta-cell function and insulin sensitivity in subjects with impaired fasting glucose. Diabetes Care. 2008 Jan;31(1):108-13. doi: 10.2337/dc07-1441. Epub 2007 Oct 1.

    PubMed 17909087

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing sitagliptin and Insulin in people with Type 1 Diabetes, run by European Foundation for the Study of Diabetes at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 31 Jul 2018. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this combined phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

The effects of sitagliptin on β cell function and insulin sensitivity of LADA patients (time frame: 2 years). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT01159847, which also lists 28 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 31 Jul 2018.

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