A Study of LY3873862 in Participants With Sporadic or Familial Amyotrophic Lateral Sclerosis (ALS).

November 12, 2026 updated by: Eli Lilly and Company

A Phase 1b, Randomized, Placebo-Controlled, Participant and Investigator-Blinded, Multiple-Ascending Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Cytochrome P450 Interaction of Orally Administered LY3873862 in Participants With Sporadic or Familial Amyotrophic Lateral Sclerosis

The main purpose of this study in participants with Sporadic or Familial Amyotrophic Lateral Sclerosis (ALS) is to test the safety of different doses and to determine the amount of LY3873862 that gets into the bloodstream and how long it takes the body to get rid of it. For each participant, the study will last up to approximately 13 weeks and will include 6 clinic visits.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

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 (Estimated)

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.
32

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.
  • Name: Trial questions or participation questions: 1-877-CTLILLY (1-877-285-4559) or
  • Phone Number: 1-317-615-4559
  • Email: LillyTrials@Lilly.com

Study Contact Backup

Study Locations

  • Canada
      • Montreal, Canada, H3A 2B4
        • Montreal Neurological Institute and Hospital
        • Principal Investigator:
          • Angela Genge
        • Contact:
          • Phone Number: 514-449-8741
      • Toronto, Canada, M4N 3M5
        • Sunnybrook Health Sciences Centre
        • Principal Investigator:
          • Agessandro Abrahao
        • Contact:
          • Phone Number: (416) 480-6100 x687561
  • United States
    • California
      • San Francisco, California, United States, 94109
        • Sutter Health Research Institute- California Pacific Medical Center, Van Ness Campus
        • Principal Investigator:
          • Jonathan Katz
        • Contact:
          • Phone Number: (415) 600-3604
    • Colorado
      • Aurora, Colorado, United States, 80045
        • University of Colorado Anschutz
        • Principal Investigator:
          • Laura Foster
    • District of Columbia
      • Washington D.C., District of Columbia, United States, 20007
        • Georgetown University Medical Center
        • Principal Investigator:
          • Shakti Nayar
    • Illinois
      • Chicago, Illinois, United States, 60611
        • Northwestern University
        • Principal Investigator:
          • Senda Ajroud-Driss
        • Contact:
          • Phone Number: 312-503-0671
    • Massachusetts
      • Boston, Massachusetts, United States, 02114
        • Healey and AMG Center for ALS at Mass General Hospital
        • Principal Investigator:
          • Doreen Ho
        • Contact:
          • Phone Number: 617-724-3914

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:

  • Have a diagnosis of sporadic or familial Amyotrophic Lateral Sclerosis (ALS) (definite, probable, laboratory probable) made by physician experienced with management of ALS as defined by the World Federation of Neurology revised El Escorial criteria.
  • Have an ALS symptom onset as determined by the investigator within 24 months of screening.
  • Have a body mass index within the range 18 to 35 kilograms per square meter (kg/m²) (inclusive).
  • Are individuals assigned male at birth (AMAB) or assigned female at birth (AFAB), including both individuals of childbearing potential (IOCBP) and individuals not of childbearing potential (INOCBP). Contraceptive use by participants should be consistent with local regulations regarding the methods of contraception for those participating in clinical studies.
  • Are able to safely swallow solids or liquids, or both.

Exclusion Criteria:

  • Have a history or presence of medical illness that, in the judgment of the investigator, indicates a medical problem that would preclude study participation including, but not limited to cardiovascular, renal, hepatic, gastrointestinal, respiratory, hematological, endocrine, psychiatric, neurologic, convulsions, or any clinically significant laboratory abnormality.
  • Have a history of another neurodegenerative disease or significant dementia/severe cognitive problems at screening.
  • Have a slow vial capacity (SVC) less than (<) 50% predicted value (for sex, age, ethnic origin, and height) at screening.
  • Have significant hepatic abnormalities (aspartate aminotransferase (AST) or alanine aminotransferase (ALT) >2 times (×) upper limit of normal (ULN) or total bilirubin (TBL) >1.5× ULN, in asymptomatic individuals with a history of Gilbert's syndrome, use TBL of >2× ULN).
  • Have a significant renal impairment (estimated glomerular filtration rate less than 60 milliliters per minute per 1.73 square meters (eGFR<60 mL/min/1.73m²)).
  • If taking riluzole, must be on a stable dose for more than 30 days (prior to Day 1).
  • If taking intravenous or oral edaravone, must have completed 2 treatment cycles (prior to Day 1).
  • Are currently taking or plan to take tofersen for the duration of the study.
  • Show evidence of Human Immunodeficiency Virus (HIV) and/or positive human HIV antibodies.
  • Show evidence of hepatitis B and/or positive hepatitis B surface antigen.
  • Have a positive Hepatitis C Virus (HCV) antibody test. Participants with a positive HCV antibody test at screening can be included only if a confirmatory HCV Ribonucleic Acid (RNA) test is negative.
  • Have an abnormal blood pressure judged to be clinically significant by the investigator.
  • Have a history of clinically significant back pain, pathological conditions of the back, or back injury (for example, degenerative disease, spinal deformity, or spinal surgery), have a local infection at the intended site of the lumbar puncture (LP) that may predispose to complications or technical difficulty with LP.
  • Are taking or intend to take inhibitors or inducers of CYP1A2, CYP2C9, CYP2C19, CYP2D6, and CYP3A4 from 14 days prior to the first dose of any study intervention, or for 5 half lives (whichever is longer), until the final PK sample is collected.

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: Basic Science
  • 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.
Experimental: LY3873862 or Placebo (Cohort 1)

LY3873862 or placebo administered orally
Drug: Placebo

Administered orally

Drug: LY3873862

Administered orally
Experimental: LY3873862 or Placebo (Cohort 2)

LY3873862 or placebo administered orally with a CYP450 drug cocktail
Drug: Placebo

Administered orally

Drug: LY3873862

Administered orally

Drug: CYP450 Drug Cocktail

CYP450 Drug Cocktail (caffeine, midazolam, flurbiprofen, dextromethorphan and omeprazole) administered orally.
Experimental: LY3873862 or Placebo (Cohort 3)

LY3873862 or placebo administered orally with a CYP450 drug cocktail
Drug: Placebo

Administered orally

Drug: LY3873862

Administered orally

Drug: CYP450 Drug Cocktail

CYP450 Drug Cocktail (caffeine, midazolam, flurbiprofen, dextromethorphan and omeprazole) administered orally.

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
Number of Patients with One or More Treatment Emergent Adverse Events Considered by the Investigator to be Related to Study Drug Administration
Time Frame: Baseline, Day 28
Baseline, Day 28

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
Pharmacokinetics: Area Under the Concentration Versus Time Curve (AUC) of LY3873862
Time Frame: Baseline, Day 7
Baseline, Day 7
Pharmacokinetics: Maximum Concentration (Cmax) of LY3873862
Time Frame: Baseline, Day 7
Baseline, Day 7

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.
Eli Lilly and 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.
  • Study Director: Call 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon - Fri 8 AM - 8 PM Eastern time (UTC/GMT - 5 hours, EST), Eli Lilly and Company

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 (Estimated)

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 1, 2026

Primary Completion (Estimated)

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 1, 2027

Study Completion (Estimated)

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 1, 2027

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).
October 14, 2026

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.
October 14, 2026

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.
October 20, 2026

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 13, 2026

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 12, 2026

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, 2026

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.
  • 27886
  • J3X-MC-LYGD (Other Identifier: Eli Lilly and Company)

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

Yes

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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