Safety and Efficacy of GRT6005 in Pain Due to Diabetic Polyneuropathy

July 13, 2021 updated by: Tris Pharma, Inc.

A Randomized 4-week Phase IIa Trial Evaluating the Efficacy, Safety, and Tolerability of GRT6005, a New Centrally Acting Analgesic, in Subjects With Pain Due to Diabetic Polyneuropathy.

The purpose of this trial is to investigate the efficacy and safety of GRT6005 in patients with painful diabetic neuropathy.

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.

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.
189

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

  • Bulgaria
      • Sofia, Bulgaria, 1431
        • Site 4502
  • Germany
      • Aschaffenburg, Germany, 63739
        • Site 4112
      • Bad Oeynhausen, Germany, 32545
        • Site 4109
      • Berlin, Germany, 10117
        • Site 4101
      • Berlin, Germany, 13125
        • Site 4110
      • Dresden, Germany, 01307
        • Site 4111
      • Hamburg, Germany, 20253
        • Site 4107
      • Hamburg, Germany, 22587
        • Site 4117
      • Hannover, Germany, 30159
        • Site 4108
      • Hannover, Germany, 30167
        • Site 4104
      • Heidelberg, Germany, 69120
        • Site 4115
      • Kiel, Germany, 24119
        • Site 4106
      • Lübeck, Germany, 23562
        • Site 4102
      • Mainz, Germany, 55116
        • Site 4103
      • Münster, Germany, 48145
        • Site 4105
      • Schwerin, Germany, 19055
        • Site 4113
      • Wangen, Germany, 88239
        • Site 4116
  • Romania
      • Bucuresti, Romania, 010496
        • Site 4405
      • Bucuresti, Romania, 011025
        • Site 4402
      • Sibiu, Romania, 550166
        • Site 4407
      • Timisoara, Romania, 300594
        • Site 4406
      • Târgu-Mureş, Romania, 540139
        • Site 4401

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

18 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Men and women, 18 to 75 years old.
  • Type 1 or type 2 diabetes.
  • Painful DPN symptoms and signs for at least 3 months.
  • Blood glucose controlled with medication.
  • Glycosylated hemoglobin not greater than 9.5 or 11%, country dependent.
  • Prior analgesic medication.
  • Average score of 4 or greater on the 11 point NRS during the last 3 days prior to randomization.

Exclusion Criteria:

  • Impaired liver, cardiac or renal function.
  • Breastfeeding and pregnancy.
  • History of substance abuse, alcohol or medication.
  • Chronic gastrointestinal disease.
  • History of seizures and or epilepsy.
  • History or presence of malignancy.
  • Presence of painful medical conditions that are not due to diabetic neuropathy, e.g. rheumatoid arthritis.
  • Allergies to opioids, acetaminophen or excipients of the medications.

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: Parallel Assignment
  • 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: 25 µg GRT6005
Participants allocated to this treatment arm will receive a daily dose of 25 µg GRT6005 per day
Drug: GRT6005
25µg/day once daily
Drug: GRT6005
75 µg/day once daily
Drug: GRT6005
200 µg/day once daily
Active Comparator: 75 µg GRT6005
Participants allocated to this treatment arm will receive a daily dose of 75 µg GRT6005 per day
Drug: GRT6005
25µg/day once daily
Drug: GRT6005
75 µg/day once daily
Drug: GRT6005
200 µg/day once daily
Active Comparator: 200 µg GRT6005
Participants allocated to this treatment arm will receive a daily dose of 200 µg GRT6005 per day
Drug: GRT6005
25µg/day once daily
Drug: GRT6005
75 µg/day once daily
Drug: GRT6005
200 µg/day once daily
Placebo Comparator: Matching Placebo
Participants allocated to this treatment arm will receive a dose of matched placebo once a day.
Drug: Matching Placebo
Once daily

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
Change in mean daily pain intensity score
Time Frame: Baseline to Week 4

Participants will be selected based on their medical history and clinical examination.

Efficacy of the treatment (i.e., reduction of pain) will be evaluated with the 11-point numeric rating scale (NRS), where 0 represents no pain and 10 represents "pain as bad as you can imagine".
Baseline to Week 4

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
Time Frame
Response measured in percentage change of pain intensity from baseline
Time Frame: End of 4 Weeks
End of 4 Weeks
Changes in Quantitative Sensory Testing from baseline
Time Frame: Baseline, week 1 and week 4
Baseline, week 1 and week 4
Neuropathic Pain Scale, changes from baseline
Time Frame: End of 4 weeks
End of 4 weeks
Short Form of the Brief Pain Inventory, changes from baseline
Time Frame: End of 4 weeks
End of 4 weeks
Leeds Sleep Evaluation Questionnaire
Time Frame: End of treatment
End of treatment
Quality of Life Index -Short-Form-12®, from baseline
Time Frame: End of treatment
End of treatment
Patient's Global Impression of Change
Time Frame: End of treatment
End of treatment
Quality of Life EuroQoL-5 Dimension score, change from baseline
Time Frame: End of 4 weeks
End of 4 weeks
Rescue medication use
Time Frame: End of 4 weeks
End of 4 weeks
Clinical Opioid Withdrawal Scale
Time Frame: End of 4 weeks
End of 4 weeks
Plasma concentration
Time Frame: End of 4 weeks
End of 4 weeks

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.
Tris Pharma, Inc.

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Forest Laboratories

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Thomas Forst, Prof. Dr., ikfe GmbH, Institut for Klinische Forschung und Entwicklung, Parcusstr. 8, 55116 Mainz, Germany

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.
May 1, 2011

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.
January 1, 2012

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.
January 1, 2012

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).
May 2, 2011

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.
May 3, 2011

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.
May 4, 2011

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.
July 15, 2021

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.
July 13, 2021

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.
July 1, 2021

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.
  • 430409
  • 2010-022557-42 (EudraCT Number)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

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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