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A Study to Determine the Safety, Pharmacokinetics, and Pharmacodynamics of DNL343 in Participants With Amyotrophic Lateral Sclerosis

A Phase 1b, Multicenter, Randomized, Placebo-Controlled, Double-Blind Study, Followed by an Open-Label Extension, to Determine the Safety, Pharmacokinetics, and Pharmacodynamics of DNL343 in Participants With Amyotrophic Lateral Sclerosis

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05006352
Enrollment
29
Registered
2021-08-16
Start date
2021-08-11
Completion date
2024-06-05
Last updated
2024-09-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Amyotrophic Lateral Sclerosis

Keywords

ALS

Brief summary

This is a Phase 1b, multicenter, randomized, placebo-controlled, double-blind study of 28 days, followed by an 18-month open-label extension, designed to evaluate the safety, pharmacokinetics (PK), and pharmacodynamics (PD) of DNL343 in participants with amyotrophic lateral sclerosis (ALS)

Detailed description

This clinical trial information was submitted voluntarily under the applicable law and, therefore, certain submission deadlines may not apply. (That is, clinical trial information for this applicable clinical trial was submitted under section 402(j)(4)(A) of the Public Health Service Act and 42 CFR 11.60 and is not subject to the deadlines established by sections 402(j)(2) and (3) of the Public Health Service Act or 42 CFR 11.24 and 11.44.).

Interventions

DRUGDNL343

Oral repeating dose

DRUGPlacebo

Oral repeating dose

Sponsors

Denali Therapeutics Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * Diagnosis of sporadic or familial ALS * ≤ 4 years since ALS symptom onset * Stable doses of approved ALS treatments (riluzole and/or edaravone) for at least 2 months prior to screening * Participants must be able to swallow the study intervention * Vital capacity \>50% predicted at screening * Women must have been surgically sterilized, be postmenopausal, or for participants of childbearing potential, must not be pregnant, and both the participant and the male partner must use highly effective contraception * Men, and sex partner if a woman of childbearing potential, must use highly effective contraception Key

Exclusion criteria

* Any history of unstable or poorly controlled psychiatric, endocrine, pulmonary, cardiovascular, gastrointestinal, hepatic, pancreatic, renal, metabolic, hematologic, immunologic, or allergic disease, or other major disorders * Positive serum pregnancy test or currently lactating or breastfeeding * History of malignancy within 5 years * History of clinically significant neurologic disorders other than ALS

Design outcomes

Primary

MeasureTime frame
Incidence of treatment-emergent adverse events (TEAEs) throughout the double-blind period28 Days

Secondary

MeasureTime frame
PK parameter: Maximum concentration (Cmax) of DNL343 in plasma19 months
PK parameter: Time to reach maximum concentration (tmax) of DNL343 in plasma19 months
PK parameter: Trough concentration (Ctrough) of DNL343 in plasma19 months
PK parameter: Area under the concentration-time curve from time zero to 24 hours (AUC24) of DNL343 in plasma19 months
Cerebrospinal fluid-to-plasma concentration ratio of DNL343 following multiple oral doses19 months

Countries

Netherlands, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 9, 2026