Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of ISIS 443139 in Participants With Early Manifest Huntington's Disease

May 30, 2019 updated by: Ionis Pharmaceuticals, Inc.

A Randomized, Double-blind, Placebo-controlled Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of Multiple Ascending Doses of Intrathecally Administered ISIS 443139 in Patients With Early Manifest Huntington's Disease

This study tested the safety, tolerability, pharmacokinetics and pharmacodynamics of multiple ascending doses of ISIS 443139 administered intrathecally to adult participants with early manifest Huntington's Disease.

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.
46

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
  • Phase 1

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

  • Canada
    • British Columbia
      • Vancouver, British Columbia, Canada, V6T 2B5
        • University of British Columbia
  • Germany
      • Berlin, Germany, 10117
        • Charité University Berlin
      • Bochum, Germany, 44791
        • Ruhr-University of Bochum
      • Ulm, Germany, 89081
        • Ulm University Hospital
  • United Kingdom
      • Birmingham, United Kingdom, B15 2TH
        • University Hospitals Birmingham
      • Cambridge, United Kingdom, CB2 0PY
        • Cambridge University Hospital
      • Cardiff, United Kingdom, CF14 4XN
        • University Hospital of Wales
      • London, United Kingdom, WC1N 3BG
        • University College London
      • Manchester, United Kingdom, M13 9WL
        • University of Manchester, St. Mary's 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

21 years to 61 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Key Inclusion Criteria:

  • Diagnosed with early manifest Huntington's disease
  • Male or female, aged 25 to 65 years, inclusive, at the time of informed consent
  • Able and willing to meet all study requirements, including travel to Study Center and participation in all procedures and measurements at study visits
  • Have a trial partner who is reliable, competent and at least 18 years of age, is willing to accompany the participant to select trial visits and to be available to the Study Center by phone if needed
  • Able to tolerate MRI scans, blood draws and lumbar punctures
  • Reside within 4 hours travel of the Study Center

Key Exclusion Criteria:

  • Clinically significant medical condition, such as severe chorea, active suicidal ideation or any other conditions which would make the participant unsuitable for inclusion or could interfere with the participant participating in or completing the study
  • Recent treatment with another investigational drug, biological agent, or device
  • Prior treatment with an antisense oligonucleotide [including small interfering ribonucleic acid (siRNA)]
  • Any history of gene therapy or cell transplantation or any other experimental brain surgery
  • Presence of an implanted shunt for the drainage of cerebrospinal fluid (CSF) or an implanted central nervous system (CNS) catheter
  • History of post-lumbar-puncture headache of moderate or severe intensity and/or blood patch
  • Malignancy within 5 years of Screening, except for basal or squamous cell carcinoma of the skin or carcinoma in situ of the cervix that has been successfully treated
  • Hospitalization for any major medical or surgical procedure involving general anesthesia within 12 weeks of Screening or planned during the study

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: ISIS 443139 10 mg
Participants received ISIS 443139, 10 milligrams (mg), by intrathecal injection, on Study Days 1, 29, 57, and 85.
Drug: ISIS 443139 10 mg
ISIS 443139, 10 mg, was administered by intrathecal injection, on Study Days 1, 29, 57, and 85.
Other Names:
  • IONIS HTTRx
Experimental: ISIS 443139 30 mg
Participants received ISIS 443139, 30 mg, by intrathecal injection, on Study Days 1, 29, 57, and 85.
Drug: ISIS 443139 30 mg
ISIS 443139, 30 mg, was administered by intrathecal injection, on Study Days 1, 29, 57, and 85.
Other Names:
  • IONIS HTTRx
Experimental: ISIS 443139 60 mg
Participants received ISIS 443139, 60 mg, by intrathecal injection, on Study Days 1, 29, 57, and 85.
Drug: ISIS 443139 60 mg
ISIS 443139, 60 mg, was administered by intrathecal injection, on Study Days 1, 29, 57, and 85.
Other Names:
  • IONIS HTTRx
Experimental: ISIS 443139 90 mg
Participants received ISIS 443139, 90 mg, by intrathecal injection, on Study Days 1, 29, 57, and 85.
Drug: ISIS 443139 90 mg
ISIS 443139, 90 mg, was administered by intrathecal injection, on Study Days 1, 29, 57, and 85.
Other Names:
  • IONIS HTTRx
Experimental: ISIS 443139 120 mg
Participants received ISIS 443139, 120 mg, by intrathecal injection, on Study Days 1, 29, 57, and 85.
Drug: ISIS 443139 120 mg
ISIS 443139, 120 mg, was administered by intrathecal injection, on Study Days 1, 29, 57, and 85.
Other Names:
  • IONIS HTTRx
Placebo Comparator: Placebo
Participants received placebo, by intrathecal injection, on Study Days 1, 29, 57, and 85.
Other: Placebo
Placebo was administered by intrathecal injection, on Study Days 1, 29, 57, and 85.

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
Number of Participants With Treatment-related Adverse Events (TEAEs)
Time Frame: Up to approximately 28 weeks
An adverse event (AE) was any unfavorable and unintended sign (including an abnormal laboratory finding, for example), symptom, or disease temporally associated with the study or use of investigational drug product, whether or not the AE was considered related to the investigational drug product. An AE was to be regarded as a TEAE if it was present prior to receiving the first dose of Study Drug and subsequently worsened or was not present prior to receiving the first dose of Study Drug but subsequently appeared.
Up to approximately 28 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
Time Frame
Observed Cerebrospinal Fluid (CSF) Concentration for ISIS 443139
Time Frame: Days 1, 29, 57, 85, and 113 or 141
Days 1, 29, 57, 85, and 113 or 141

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
Maximum Plasma Concentration (Cmax) for ISIS 443139
Time Frame: Days 1 and 85
Days 1 and 85
Time to Maximum Plasma Concentration (Tmax) for ISIS 443139
Time Frame: Days 1 and 85
Days 1 and 85
Change From Baseline in CSF Mutant Huntingtin (fM) Protein Concentration
Time Frame: Baseline to Final Assessment (Day 85 or 113)
Baseline was defined as the last non-missing measure prior to the first dose.
Baseline to Final Assessment (Day 85 or 113)
Change From Baseline in CSF Neurofilament Light Chain Concentration
Time Frame: Baseline to Final Assessment (Day 85 or 113)
Baseline was defined as the last non-missing measure prior to the first dose.
Baseline to Final Assessment (Day 85 or 113)
Ventricular Volume as Assessed by Structural Magnetic Resonance Imaging (MRI)
Time Frame: Screening, Days 113, and 197
Screening, Days 113, and 197
Huntington's Disease (HD) Cognitive Assessment Battery Composite Score
Time Frame: Baseline to Days 84, 141, and 197
The HD Cognitive Battery was developed as a means of measuring cognitive dysfunction in late premanifest and early manifest HD patients. The 6 tests that comprise the battery were selected based on test sensitivity, practice effects, reliability, domain coverage, feasibility for use in clinical trials, and tolerability. A composite cognitive score was calculated by the average z-score of the 6 individual tests. A positive change from baseline indicated improvement in cognitive function; a negative change indicated worsening. Baseline was defined as the last non-missing measure prior to the first dose.
Baseline to Days 84, 141, and 197

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.
Ionis Pharmaceuticals, Inc.

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

Helpful Links

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.
August 6, 2015

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.
November 8, 2017

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.
November 8, 2017

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 1, 2015

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.
August 5, 2015

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.
August 10, 2015

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.
May 31, 2019

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.
May 30, 2019

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.
May 1, 2019

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.
  • ISIS 443139-CS1
  • 2015-000381-66 (EudraCT Number)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

product manufactured in and exported from the U.S.

Yes

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.

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings