Randomized Study of Yohimbine Treatment for Type 2 Diabetes Patients Carrying a Specific Genetic Risk Variant (YOH1)

January 7, 2015 updated by: Anders Rosengren, MD PhD
The investigators have recently discovered a genetic variant in an adrenergic receptor that leads to increased risk for type 2 diabetes. The investigators have also seen that blockers of that receptor improves impaired insulin secretion in animals. The investigators will now test the blocker in patients with type 2 diabetes with or without the risk variant in an effort to make diabetes treatment more individualized.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

We have recently discovered a genetic variant in an adrenergic receptor that leads to increased risk for type 2 diabetes. We have also seen that blockers of that receptor improves impaired insulin secretion in animals. We will now test the blocker in patients with type 2 diabetes with or without the risk variant in an effort to make diabetes treatment more individualized. Patients will receive two different doses of the blocker and the effect will be measured with oral glucose tolerance tests. The study is a randomized placebo-controlled study.

Study Type

Interventional

Enrollment (Actual)

50

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Sweden
    • Skane
      • Malmo, Skane, Sweden, 20502
        • Skanes Universitetssjukhus

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • type 2 diabetes
  • informed consent
  • age 18-70, for females only postmenopausal

Exclusion Criteria:

  • heart disease
  • anxiety disorder
  • antidiabetic treatment other than metformin
  • adrenergic blockers
  • ulcus
  • allergy to any component in the capsules

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Placebo first then yohimbine
placebo first, then yohimbine
Drug: Yohimbine
Yohimbine capsule
Active Comparator: Yohimbine first then placebo
Drug: Yohimbine
Yohimbine capsule

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Insulin Secretion
Time Frame: 30 minutes after oral glucose
insulin secretion will be measured (nMole) in response to an oral glucose tolerance test. Patients will receive the capsules 1 h before the glucose test, and the insulin levels 30 minutes after the oral glucose will be used as a primary outcome measure. The insulin levels at the highest tolerated dose of yohimbine will be used.
30 minutes after oral glucose

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Glucose
Time Frame: 30 minutes after oral glucose
Plasma glucose will be measure (mMole) in response to an oral glucose tolerance test. Patients will receive the capsules 1 h before the glucose test, and the glucose levels 30 minutes after the oral glucose will be used as a secondary outcome measure. The glucose levels at the highest tolerated dose of yohimbine will be used.
30 minutes after oral glucose

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Anders Rosengren, MD PhD

Collaborators

Lund University
Region Skane

Investigators

  • Principal Investigator: Anders Rosengren, MD PhD, Region Skane

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

May 1, 2012

Primary Completion (Actual)

October 1, 2014

Study Completion (Actual)

October 1, 2014

Study Registration Dates

First Submitted

May 3, 2012

First Submitted That Met QC Criteria

May 4, 2012

First Posted (Estimate)

May 8, 2012

Study Record Updates

Last Update Posted (Estimate)

January 9, 2015

Last Update Submitted That Met QC Criteria

January 7, 2015

Last Verified

January 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2010-018604-85

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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