Efficacy and Tolerability of IRL790 in Parkinson's Disease Dyskinesia

March 17, 2022 updated by: Integrative Research Laboratories AB

A Randomized, Placebo-controlled, Phase IIa Study Evaluating the Efficacy and Tolerability of IRL790 in Parkinson's Disease Dyskinesia

Mesdopetam (IRL790) is an experimental small molecule compound with psychomotor stabilizing properties. The primary target is the dopamine D3 receptor, a target implicated in the generation of levodopa-induced dyskinesia, a side-effect frequently occurring with long-term levodopa treatment in patients with Parkinson's disease. In experimental animals mesdopetam potently reduced levodopa-induced involuntary movement without impairing the antiparkinsonian effect of levodopa.

The primary purpose of the trial is to investigate whether mesdopetam given as adjunctive treatment can reduce levodopa induced dyskinesia in patients with Parkinson's disease. The trial will also help to establish the most optimal dosing of the compound.

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

METHODOLOGY:

This is a multicentre study where 74 patients with Parkinson's disease exhibiting levodopa induced dyskinesia will be randomised to receive study drug or placebo. Thirty seven patients will be randomised to mesdopetam and 37 patients to placebo (1:1 randomisation).

Patients will be screened for eligibility according to inclusion/exclusion criteria within four weeks of initiation of study treatment (Screening visit).

An outpatient study with the patients taking the study drug for four weeks at home. Mesdopetam will be taken twice daily (b.i.d.) as adjunctive treatment to the patients' regular and stable antiparkinsonian medication.

The first two weeks of treatment will allow for per patient titration of study medication to the highest tolerated predefined dose, after which patients will continue on this highest tolerated dose for an additional two weeks.

Changes in disease state and dyskinesia will be measured using the Unified Parkinson's Disease Rating Scale (MDS-UPDRS) and Unified Dyskinesia Rating Scale (UDysRS); furthermore, patients will administer two 24-hour diaries on run-in and on the fourth week of dosing to assess daily movements.

Pharmacokinetic (PK) samples will be collected for the determination of concentrations of mesdopetam and its metabolites IRL902 and IRL872 in plasma. They will be collected before and after IMP administration at two visits.

A Follow-up Visit will be performed for all patients five to eight days after last administration of IMP.

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.
75

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

  • Sweden
      • Göteborg, Sweden
        • Sahlgrenska University Hospital
      • Linköping, Sweden
        • University Hospital
      • Lund, Sweden
        • University Hospital
      • Stockholm, Sweden
        • Karolinska University Hospital
  • United Kingdom
      • Bristol, United Kingdom
        • Bristol Brain Centre, Southmead Hospital
      • Bury, United Kingdom
        • Fairfield General Hospital (Pennine Acute NHS Trust)
      • Dundee, United Kingdom
        • Ninewells Hospital
      • Lincoln, United Kingdom
        • Lincoln County Hospital
      • London, United Kingdom
        • Charing Cross Hospital, Imperial College Healthcare NHS Trust
      • London, United Kingdom
        • The National Hospital of Neurology and Neurosurgery (UCL)
      • Luton, United Kingdom
        • Luton and Dunstable University Hospital NHS Foundation Trust
      • North Shields, United Kingdom
        • North Tyneside General Hospital
      • Nottingham, United Kingdom
        • Qeens' Medical Centre
      • Oxford, United Kingdom
        • John Radcliffe Hospital
      • Peterborough, United Kingdom
        • Peterborough City Hospital
      • Plymouth, United Kingdom, PL6 8DH
        • Plymouth Hospitals NHS Trust - Derriford Hospital
      • Romford, United Kingdom
        • Queens's Hospital
      • Stoke-on-Trent, United Kingdom
        • Royal Stoke University Hospital
      • Torquay, United Kingdom
        • Torbay Hospital
      • Truro, United Kingdom
        • Royal Cornwall Hospital

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

14 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  1. Male or female ≥18 and ≤79 years of age.
  2. Signed a current Ethics Committee approved informed consent form.
  3. Parkinson's disease, per UK Parkinson's Disease Society (UKPDS) Brain Bank Clinical Diagnostic Criteria.
  4. Waking day dyskinesia of ≥25% determined as a score of ≥2 as per Question 4.1 of the MDS-UPDRS.
  5. On a stable regimen of antiparkinson medications for at least 30 days prior to screening, including a levodopa preparation administered not less than three times daily and willing to continue the same doses and regimens during study participation. Rescue medication such as Madopar dispersable and Apomorphine injections are allowed.
  6. Taking a maximum of eight regular levodopa intakes per day, excluding bedtime and night time levodopa.
  7. Any other current and allowed prescription/non-prescription medications and/or nutritional supplements taken regularly must have been at a stable dose and regimen for at least 30 days prior to screening and the patient must be willing to continue the same doses and regimens during study participation (this criterion does not apply to medications that are being taken pre-study only on an as-needed basis).
  8. Patient must be willing and able to avoid direct exposure to sunlight from day 1 to day 28.
  9. Able to complete at least one valid 24-hour patient diary at Visit 1.

Exclusion Criteria:

  1. History of neurosurgical intervention related to Parkinson's disease (e.g. deep brain stimulation).
  2. Treatment with pump delivered antiparkinsonian therapy (i.e. subcutaneous apomorphine or levodopa/carbidopa intestinal infusion).
  3. History of seizures within two years prior to screening.
  4. History of stroke or transient ischemic attack (TIA) within two years prior to screening.
  5. History of cancer within five years prior to screening, with the following exceptions: adequately treated non-melanomatous skin cancers, localised bladder cancer, non-metastatic prostate cancer or in situ cervical cancer.
  6. Presence of cognitive impairment, as evidenced by a Mini-Mental Status Examination (MMSE) score of less than 24 during screening.
  7. A Hoehn and Yahr score of five when "off" as per Question 3.18 of the MDS-UPDRS, assessed during screening.
  8. Any history of a significant heart condition or cardiac arrhythmias within the past 5 years, any repolarisation deficits or any other clinically significant abnormal ECG as judged by the Investigator
  9. Severe or ongoing unstable medical condition including a history of poorly controlled diabetes; obesity associated with metabolic syndrome; uncontrolled hypertension; cerebrovascular disease, or any form of clinically significant cardiac disease; clinically significant symptomatic orthostatic hypotension; clinically significant hepatic disease, renal failure or abnormal renal function.
  10. Any history of a neurological other than Parkinson's disease or a psychiatric disorder, including history of DSM IV diagnosed major depression or psychosis. Patients with illusions or hallucinations with no loss of insight will be eligible. Patients with mild depression who are well controlled on a stable dose of an antidepressant medication for at least 4 weeks before screening will be eligible.
  11. Enrolment in any other clinical study involving medication, medical devices or surgical procedures, current or within three months prior to screening visit, or previous participation in the present study. Patients enrolled in non-interventional clinical trials will be eligible.
  12. Drug and/or alcohol abuse.
  13. History of severe drug allergy or hypersensitivity.
  14. If female, is pregnant or lactating, or has a positive pregnancy test result pre-dose.
  15. Patients unwilling to use two forms of contraception 90 days for men and 30 days for women after last IMP dose
  16. Any planned major surgery within the duration of the study.
  17. Any other condition or symptoms preventing the patient from entering the study, according to the Investigator's judgement.

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: Quadruple

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.
Experimental: Mesdopetam (IRL790)
Capsule 2.5 mg, oral administration
Drug: Mesdopetam (IRL790)
Mesdopetam (IRL790) capsule
Other Names:
  • IRL790
Placebo Comparator: Placebo
Identical capsule, oral administration
Drug: Mesdopetam (IRL790)
Mesdopetam (IRL790) capsule
Other Names:
  • IRL790

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
Unified Dyskinesia Rating Scale (UDysRS)
Time Frame: Baseline and 4 weeks
The change from baseline to day 28 of treatment (Visit 4) in the sum of the items comprising the Unified Dyskinesia Rating Scale (UDysRS). The Unified Dyskinesia Rating Scale (UDysRS) is administered to assess dyskinesia. The scoring range is 0-104, where higher score means more dyskinesia.
Baseline and 4 weeks

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
Unified Parkinson's Disease Rating Scale (MDS-UPDRS) Part IV, Question 4.1 and 4.2
Time Frame: Baseline and 4 weeks
Change in MDS-UPDRS sum score of questions 4.1 (Time spent with dyskinesias) and 4.2 (Functional impact of dyskinesias) in part IV from baseline to visit 4. Minimum score is 0 and maximum score is 8. A higher score means more dyskinesia.
Baseline and 4 weeks
Unified Parkinson's Disease Rating Scale (MDS-UPDRS), Part II and III
Time Frame: Baseline and 4 weeks
Change in MDS-UPDRS sum score of parts II+III (Motor aspects of Experiences of Daily living + Motor Examination) from baseline to visit 4. Minimum value is 0 and maximum value is 124. Higher score mean a worse outcome.
Baseline and 4 weeks

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Change in Daily Hours Spent in ON-time With Troublesome Dyskinesia as Assessed by 24-hour Patient Diaries
Time Frame: Run-in and 4 weeks

Change in ON-time with troublesome dyskinesia as assessed by patient completed 24-hour diaries, from run-in to visit 4. This is a self administered diary where patients assess their motor state every half hour during 24 hours.

The different motor states assessed: ON, ON with troublesome dyskinesia, OFF and asleep.
Run-in and 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.
Integrative Research Laboratories AB

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.
The Clinical Trial Company

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: Camille Carroll, MD, Plymouth University Peninsula Schools of Medicine and Dentistry

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 (Actual)

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.
April 12, 2018

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.
June 12, 2019

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.
June 12, 2019

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).
December 5, 2017

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.
December 5, 2017

First Posted (Actual)

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.
December 11, 2017

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.
March 31, 2022

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.
March 17, 2022

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.
March 1, 2022

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.
  • IRL790C003

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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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