A Study to Investigate the Glucose Lowering Effects of Dextromethorphan Alone or in Combination With Sitagliptin in Subjects With Type 2 Diabetes Mellitus (T2DM) After an Oral Glucose Tolerance Test (DXM2)

November 6, 2017 updated by: Profil Institut für Stoffwechselforschung GmbH

A Phase IIa, Dose-finding, Double-blind, Placebo-controlled, Double-dummy, Randomized, Eightfold Cross-over Study to Investigate the Glucose Lowering Effects of Dextromethorphan Alone or in Combination With Sitagliptin in Subjects With Type 2 Diabetes Mellitus (T2DM) After an Oral Glucose Tolerance Test

The study has a randomized, double-blind, placebo-controlled, double dummy and eight-way cross-over design. Males with T2DM on a stable metformin monotherapy will be screened for participation in the study. Eligible subjects will be randomized to receive DXM 30 mg, DXM 60 mg, DXM 90 mg alone or in combination with sitagliptin 100 mg, sitagliptin 100 mg alone, or placebo (for DXM and sitagliptin) on in total eight treatment days. An OGTT will be started 1 hour after study drug administration and blood glucose will be measured over the next 4 hours. There will be a 3 to 14-day washout period between doses.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This study is performed to determine the optimal dose of DXM that, compared to placebo, decreases glucose excursions following an OGTT. Doses of 30 mg, 60 mg and 90 mg DXM were chosen. Since DXM 60 mg was effective in the previous study in increasing insulin secretion, this dose will be kept. A lower dose (30 mg) will be given to see whether effects on insulin secretion are present also at lower doses and then translate into a BG lowering action. A higher dose (90 mg) will be added to see whether this way an effect on glucose excursion reduction occurs following an OGTT, (like previously demonstrated with 270 mg DXM) that can be related to an increase of insulin secretion.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
34

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • 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

  • Germany
      • Neuss, Germany, 41460
        • Profil Institut für Stoffwechselforschung GmbH

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

45 years to 70 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  1. Signed and dated written informed consent obtained before any study-related activities
  2. Male subjects with a diagnosis of type 2 diabetes mellitus according to ADA criteria at least 4 months prior to screening
  3. Medical history without major pathology (with the exception of type 2 diabetes)
  4. On a stable regimen of metformin monotherapy for at least 3 months
  5. Aged between 45 and 70 years of age, both inclusive
  6. Body mass index (BMI) between 25 and 35kg/m2, both inclusive

Exclusion Criteria:

  1. Subjects with type 1 diabetes, MODY or secondary forms of diabetes such as due to pancreatitis
  2. History of pancreatitis
  3. Current or previous treatment with insulin therapy
  4. Treatment with any hypoglycemic medication other than metformin within the three months prior to screening
  5. Mean QTc> 450 msec

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
  • Masking: DOUBLE

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
ACTIVE_COMPARATOR: Sitagliptin
Placebo dextromethorphan + sitagliptin 100 mg
Drug: Sitagliptin
EXPERIMENTAL: Dextromethorphan 30 mg + sitagliptin
Dextromethorphan 30 mg + sitagliptin 100 mg
Drug: Sitagliptin
Drug: Dextromethorphan
EXPERIMENTAL: Dextromethorphan 60 mg + sitagliptin
Dextromethorphan 60 mg + sitagliptin 100 mg
Drug: Sitagliptin
Drug: Dextromethorphan
EXPERIMENTAL: Dextromethorphan 90 mg + sitagliptin
Dextromethorphan 90 mg + sitagliptin 100 mg
Drug: Sitagliptin
Drug: Dextromethorphan
EXPERIMENTAL: Dextromethorphan 30 mg + placebo
Dextromethorphan 30 mg + placebo (sitagliptin)
Drug: Dextromethorphan
EXPERIMENTAL: Dextromethorphan 60 mg + placebo
Dextromethorphan 60 mg + placebo (sitagliptin)
Drug: Dextromethorphan
EXPERIMENTAL: Dextromethorphan 90 mg + placebo
Dextromethorphan 90 mg + placebo (sitagliptin)
Drug: Dextromethorphan
PLACEBO_COMPARATOR: Placebo
Placebo (dextromethorphan)+ placebo (sitagliptin)
Drug: Placebo

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
lowest dose of DXM
Time Frame: up to 4 hours after study drug administration
To find the lowest dose of DXM that, compared to placebo, exerts BG lowering effects related to an OGTT
up to 4 hours after study drug administration

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
additive BG lowering effects
Time Frame: up to 4 hours after study drug administration
To demonstrate whether the administration of DXM on top of sitagliptin exerts additive BG lowering effects related to an OGTT as compared to sitagliptin alone and DXM alone
up to 4 hours after study drug administration

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Profil Institut für Stoffwechselforschung GmbH

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 1, 2013

Primary Completion (ACTUAL)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 1, 2014

Study Completion (ACTUAL)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
April 1, 2014

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 28, 2013

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 2, 2013

First Posted (ESTIMATE)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 5, 2013

Study Record Updates

Last Update Posted (ACTUAL)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 7, 2017

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 6, 2017

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2017

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 00/0648-DXM2

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