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A Phase 1, Open-label Study of the Absorption, Metabolism, and Excretion of [14C]-DNL343 Following a Single Oral Dose in Healthy Male Participants

A Study of the Pharmacokinetics of [14C]-DNL343 Following a Single Oral Dose in Healthy Male Participants

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06281158
Enrollment
7
Registered
2024-02-28
Start date
2024-03-01
Completion date
2024-04-30
Last updated
2024-06-20

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

Conditions

Healthy Volunteers

Brief summary

This is a Phase 1, open-label, nonrandomized, single-dose study in healthy male participants to investigate the absorption, metabolism and excretion of DNL343.

Interventions

DRUG[14C]-DNL343

Single dose

Sponsors

Denali Therapeutics Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to 65 Years
Healthy volunteers
Yes

Inclusion criteria

* Males, aged between 18 to 65 years, inclusive * Body mass index between 18.0 and 32.0 kg/m2 * In good health * When engaging in sex with a woman of child bearing potential, both the male participant and his female partner must use highly effective contraception * History of a minimum of 1 bowel movement per day

Exclusion criteria

* History or clinical manifestation of any clinically significant metabolic, allergic, dermatological, hepatic, renal, hematological, pulmonary, cardiovascular, gastrointestinal, neurological, respiratory, endocrine, or psychiatric disorder * Have a history of malignancy, except fully resected basal cell carcinoma * History of significant hypersensitivity, intolerance, or allergy to any drug compound, food, or other substance * History of stomach or intestinal surgery or resection that would potentially alter absorption and/or excretion of orally administered drugs * Have previously completed or withdrawn from this study or any other study investigating DNL343 and have previously received DNL343

Design outcomes

Primary

MeasureTime frameDescription
Extent and rate of recovery of total radioactivity in urine and feces28 days
PK Parameter: AUC0-∞28 daysThe area under the concentration-time curve from time zero extrapolated to infinity (AUC0-∞) of DNL343 in plasma
PK Parameter: AUC0-tlast28 daysArea under the concentration-time curve from time zero to the last quantifiable time point (AUC0-tlast) of DNL343 in plasma
PK Parameter: Cmax28 daysMaximum observed concentration (Cmax) of DNL343 in plasma
PK Parameter: Tmax28 daysTime to maximum observed concentration (Tmax) of DNL343 in plasma
PK Parameter: t1/228 daysTerminal elimination half-life (t1/2) of DNL343 in plasma
Total radioactivity in plasma and whole blood28 days
Total radioactivity in blood-to-plasma ratio28 days

Secondary

MeasureTime frameDescription
PK Parameter: AUC0-tlast28 daysArea under the concentration-time curve from time zero to the last quantifiable time point (AUC0-tlast) of a DNL343 metabolite in plasma
PK Parameter: Cmax28 daysMaximum observed concentration (Cmax) of a DNL343 metabolite in plasma
PK Parameter: Tmax28 daysTime to maximum observed concentration (Tmax) of a DNL343 metabolite in plasma
PK Parameter: t1/228 daysTerminal elimination half-life (t1/2) of a DNL343 metabolite in plasma
DNL343 and a DNL343 metabolite recoveries in urine28 days
Incidence, severity, and seriousness of treatment-emergent adverse events (TEAEs)28 days
PK Parameter: AUC0-∞28 daysThe area under the concentration-time curve from time zero extrapolated to infinity (AUC0-∞) of a DNL343 metabolite in plasma

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026