A Study Exploring the PK/PD Relationship of QRL-101 in Adults With ALS

August 25, 2025 updated by: QurAlis Corporation

A Randomized, Placebo-Controlled, Double-Blind, Single-Dose, Phase 1 Study to Explore the PK/PD Relationship of QRL-101 in People Living With ALS

This Phase 1 randomized, placebo-controlled, double-blind study will evaluate the PK/PD relationship of single doses of QRL-101 in 12 ALS participants. The study will also assess safety and tolerability in participants receiving either QRL-101 or placebo.

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 is a randomized, placebo-controlled, double-blind, single-dose, single-site, Phase 1 study to explore the pharmacokinetics (PK) and pharmacodynamics (PD) of single doses of QRL-101 in participants with ALS. In addition, the safety and tolerability of QRL-101 will be evaluated. Single doses of QRL-101 or placebo will be administered as an oral liquid to approximately 12 participants with ALS. The study will explore the PK, PD, and PK/PD relationship among three dose levels of QRL-101 and placebo. The randomization will be 1:1:1:1 for the four study groups and will be conducted in 3 blocks (cohorts) of 4, where participants will be randomized 3:1 (QRL-101:placebo) for increasing dose levels of QRL-101.

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.
12

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 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 Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Netherlands
    • Netherlands
      • Utrecht, Netherlands, Netherlands, 9728 NZ
        • Universitair Medisch Centrum Utrecht

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

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

INCLUSION CRITERIA

  1. Age 18 to 80 years of age inclusive at the time of signing the informed consent.
  2. Diagnosis of ALS, by either Gold Coast Criteria or El Escorial Criteria (possible, probable laboratory supported, probable, or definite)
  3. Clinical chemistry laboratory values within acceptable range for the population, as per investigator judgment.
  4. Body mass index of 18 to 32 kg/m2 (inclusive).
  5. Willing and able to practice effective contraception.

EXCLUSION CRITERIA

  1. Currently enrolled in any other clinical trial involving a study drug, off-label drug or device use, or any other type of medical research judged not scientifically or medically compatible with this study.
  2. History or presence of medical illness including, but not limited to, any cardiovascular, hepatic, respiratory, hematological, endocrine, psychiatric, or neurological disease, convulsions, or any clinically significant laboratory abnormality that, in the judgment of the investigator, indicate a medical problem that would preclude study participation.
  3. Off-label use of drugs or devices that are being used or investigated as disease-modifying therapies in ALS
  4. Participated in another clinical study within 30 days, or 5 half-lives of the previous investigational product, whichever is greater, prior to the planned randomization date.
  5. Taking any prescription or nonprescription medicines that are cytochrome P450 3A4 inducers, inhibitors, or substrates within 30 days or 5 half-lives, whichever is greater, prior to the planned randomization date

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: Sequential 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.
Experimental: QRL-101
Single doses of QRL-101 will be orally administered. The dose levels may change subject to available nonclinical, clinical, safety, and PK data.
Drug: QRL-101
Single doses of QRL-101 will be orally administered. The dose levels may change subject to available nonclinical, clinical, safety, and PK data.
Experimental: Placebo
Single doses of comparator placebo will be orally administered. The dose levels may change subject to available nonclinical, clinical, safety, and PK data.
Other: Placebo
Single doses of compartor placebo will be orally administered. The dose levels may change subject to available nonclinical, clinical, safety, and PK data.

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
Time Frame
QRL-101 plasma concentration
Time Frame: Baseline through Follow up (Day 10)
Baseline through Follow up (Day 10)
PK/PD Relationship: Strength-Duration Time Constant (SDTC)
Time Frame: Baseline through Follow up (Day 10)
Baseline through Follow up (Day 10)

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
Safety and Tolerability: Adverse Events (AEs)
Time Frame: Baseline through Follow up (Day 10)
Baseline through Follow up (Day 10)
Safety and Tolerability: Serious Adverse Events (SAEs)
Time Frame: Baseline through Follow up (Day 10)
Baseline through Follow up (Day 10)
Plasma PK profile: Maximum concentration observed (Cmax)
Time Frame: Baseline through Follow up (Day 10)
Baseline through Follow up (Day 10)
Plasma PK profile: Time of maximum drug concentration (Tmax)
Time Frame: Baseline through Follow up (Day 10)
Baseline through Follow up (Day 10)
Plasma PK profile: Area under the concentration time curve from time 0 to 24 hours (AUC0-24hr)
Time Frame: Baseline through Follow up (Day 10)
Baseline through Follow up (Day 10)

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.
QurAlis Corporation

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.
November 11, 2024

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.
August 22, 2025

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.
August 22, 2025

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).
November 27, 2024

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.
November 27, 2024

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 3, 2024

Study Record Updates

Last Update Posted (Estimated)

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.
September 2, 2025

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.
August 25, 2025

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.
August 1, 2025

More Information

Terms related to this study

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.
  • QRL-101-04

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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