Dipeptidyl Peptidase-4 Inhibition and Immune Function in HIV

2014-08-27 03:14:58 | BioPortfolio


We will test the safety of a new class of anti-diabetes compounds (DPPIV-inhibitors) in people living with HIV. Future trials will examine efficacy for treating diabetes and reducing cardiovascular disease risk in people living with HIV.


Human immunodeficiency virus (HIV)-infection and treatment with antiretroviral therapies are associated with several cardiometabolic risk factors; insulin resistance, diabetes, dyslipidemia, central adiposity, that increase risk for MI and stroke. A new class of drugs used to treat type 2 diabetes has been introduced; Dipeptidyl peptidase-IV (DPPIV)-inhibitors (Januvia®, Onglyza®, alogliptin). Dipeptidyl peptidase-IV (DPPIV)-inhibition could be a safe and effective therapy for HIV-associated insulin resistance and diabetes. However, no safety data exist. The research question is: If HIV+ adults with stable immunologic (CD4+ T-cell count >350 cells/μL) and virologic (plasma HIV RNA <50 copies/mL) function are given a DPPIV-inhibitor would their CD4+ T-cell count and plasma HIV RNA level increase, decrease, or stay the same? Theoretically, DPPIV-inhibition could enhance their immune system by increasing SDF-1α levels; a potent inhibitor of HIV-entry into T-cells, or harm the HIV+ immune system by inactivating CD26 on immune cells. We hypothesize that DPPIV-inhibition will not harm the immune system in HIV+ people. We propose a blinded randomized controlled pilot safety trial of an FDA-approved DPPIV-inhibitor in virologically- and immunologically-stable HIV+ men and women. We will monitor CD4+ T-cell count, plasma HIV RNA levels, immune activation markers, and safety outcomes (lipid/lipoprotein profiles, blood pressure, kidney and liver function) during 6 months of DPPIV-inhibitor exposure vs placebo in 20 HIV+ adults. If safety is confirmed, the efficacy of DPPIV-inhibition in HIV+ with insulin resistance will be tested in future trials that examine potential glucoregulatory and cardiovascular benefits.

Study Design

Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Safety Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator)




Sitagliptin, Placebo


Washington University School of Medicine
Saint Louis
United States




Washington University School of Medicine

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:14:58-0400

Clinical Trials [1921 Associated Clinical Trials listed on BioPortfolio]

Sitagliptin Dose Comparison Study in Patients With Type 2 Diabetes

A study to assess the safety and efficacy of sitagliptin 100mg compared to sitagliptin 200mg in patients with type 2 diabetes.

Treatment to Prevent Diabetes Mellitus

The purpose of this study is to determine whether treatment with the diabetes medication, Januvia (sitagliptin), with or without another diabetes medicine, pioglitazone, will improve insul...

Sitagliptin for Reducing Inflammation and Immune Activation

The purpose of the study is to evaluate whether sitagliptin (Januvia is the brand name for sitagliptin) reduces inflammation and immune activation markers in HIV-infected men and women whe...

Sitagliptin in Prevention of Type 2 Diabetes Mellitus

The hypothesis is, in subjects with persistent impaired glucose tolerance(IGT) , sitagliptin will decrease the conversion rate to diabetes as compared to a placebo in three years.

Clinical Study on Sitagliptin for Assessment of Glucose-lowering Effects

A clinical study determines the safety and efficacy of sitagliptin (MK0431) in patients with Type 2 diabetes mellitus who have inadequate glycemic control on diet/exercise therapy

PubMed Articles [4542 Associated PubMed Articles listed on BioPortfolio]

Efficacy and Safety of Sitagliptin in Hispanic/Latino Patients with Type 2 Diabetes: A Pooled Analysis from Ten Randomized, Placebo-Controlled Phase 3 Clinical Trials.

To assess the efficacy and safety profile of the dipeptidyl-peptidase-4 inhibitor sitagliptin in a population of self-identified Hispanic/Latino patients with type 2 diabetes.

Efficacy and safety of replacing sitagliptin with canagliflozin in real-world patients with type 2 diabetes uncontrolled with sitagliptin combined with metformin and/or gliclazide: The SITA-CANA Switch Study.

To analyze the efficacy and safety of replacing sitagliptin with canagliflozin in patients with type 2 diabetes (T2D) and poor metabolic control despite treatment with sitagliptin in combination with ...

Differences in kidney-specific DPP-4 inhibition by linagliptin and sitagliptin.

The two dipeptidyl peptidase (DPP)-4 inhibitors, linagliptin and sitagliptin, were shown to exert different binding kinetics in vitro. Twenty-four hours after oral dosing particularly in vivo inhibiti...

Altered T-cell Subsets and Transcription Factors in Latent Autoimmune Diabetes in Adults with Sitagliptin, a Dipeptidyl Peptidase-4 Inhibitor: A One-year Open-Label Randomized Controlled Trial.

Dipeptidyl Peptidase-4 Inhibitor was proved to improve glycemic control and βcell function in latent autoimmune diabetes in adults (LADA). The potential immune modulation mechanism is still unknown. ...

Effect of Food on the Pharmacokinetics of Ertugliflozin and Its Fixed-Dose Combinations Ertugliflozin/Sitagliptin and Ertugliflozin/Metformin.

Ertugliflozin, an inhibitor of sodium-glucose cotransporter 2, is approved in the United States and European Union for the treatment of type 2 diabetes in adults, both as monotherapy and as part of fi...

Medical and Biotech [MESH] Definitions

A pharmaceutical preparation of sitagliptin phosphate and metformin hydrochloride that is used in the treatment of TYPE 2 DIABETES.

A pyrazine-derived DIPEPTIDYL-PEPTIDASE IV INHIBITOR and HYPOGLYCEMIC AGENT that increases the levels of the INCRETIN hormones GLUCAGON-LIKE PEPTIDE-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP). It is used in the treatment of TYPE 2 DIABETES.

Urination of a large volume of urine with an increase in urinary frequency, commonly seen in diabetes (DIABETES MELLITUS; DIABETES INSIPIDUS).

The time period before the development of symptomatic diabetes. For example, certain risk factors can be observed in subjects who subsequently develop INSULIN RESISTANCE as in type 2 diabetes (DIABETES MELLITUS, TYPE 2).

A subclass of DIABETES MELLITUS that is not INSULIN-responsive or dependent (NIDDM). It is characterized initially by INSULIN RESISTANCE and HYPERINSULINEMIA; and eventually by GLUCOSE INTOLERANCE; HYPERGLYCEMIA; and overt diabetes. Type II diabetes mellitus is no longer considered a disease exclusively found in adults. Patients seldom develop KETOSIS but often exhibit OBESITY.

More From BioPortfolio on "Dipeptidyl Peptidase-4 Inhibition and Immune Function in HIV"

Quick Search


Searches Linking to this Trial