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HealthyPhase 1NCT04991766

A Study of [¹⁴C]-LY3484356 in Healthy Female Participants

A Phase 1 study testing [¹⁴C]-LY3484356, LY3484356 and [¹⁴C]-LY3484356 (IV) in people with Healthy, run by Eli Lilly and Company at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The main purpose of this study is to measure how much of the study drug gets into the bloodstream and how long it takes the body to get rid of it. This study has two parts. It will involve a single dose of 14C radiolabeled LY3484356. Read more about this study

Who is it for?
Ages 18 to 65 years, women onlyHealthy volunteers can take part
Conditions the study is for
Healthy
What is being tested?
[¹⁴C]-LY3484356, LY3484356 and [¹⁴C]-LY3484356 (IV)
Could I receive a placebo?
No, everyone receives an active treatment
How many people
16 participants
Where
1 siteUnited States
Study dates
13 Aug 2021to 2 Apr 2022
Phase
Phase 1
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 65 years
  • Women only
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Female participants of nonchildbearing potential. This includes females who are not pregnant, non-lactating and either: Infertile due to surgical sterilization or alternate medical cause/congenital or postmenopausal.
  • Body mass index (BMI) within the range of 18.0 to 35.0 kilograms per meter squared (kg/m²)

Who cannot join

  • Significant history or clinical manifestation of any metabolic, allergic, dermatological, hepatic, renal, hematological, pulmonary, cardiovascular, gastrointestinal, neurological, respiratory, endocrine, or psychiatric disorders
  • Have evidence of human immunodeficiency virus (HIV) infection and/or positive human HIV antibodies
  • Have known allergies to LY3484356, related compounds or any components of the formulation as appropriate, or history of significant atopy

Trial locations and contacts

1 site in 1 country.

United States1 site
  • LabCorp CRU, Inc.

    Madison, Wisconsin, 53704

Other trials in United States

About this study

Official title: An Open-label, Two-part Study of the Disposition and Absolute Bioavailability of [¹⁴C]-LY3484356 in Healthy Females of Non-Childbearing Potential

The main purpose of this study is to measure how much of the study drug gets into the bloodstream and how long it takes the body to get rid of it. This study has two parts. It will involve a single dose of 14C radiolabeled LY3484356. This means that a radioactive substance C14 will be incorporated into the study drug, to investigate the study drug and its breakdown products, to find out how much of these pass from blood into urine, feces and expired air. The study will last about 4 weeks. Screening is required within 28 days prior to the start of the study and follow up is required approximately 7 days after discharge.

Conditions
Healthy
Being tested
[¹⁴C]-LY3484356, LY3484356, [¹⁴C]-LY3484356 (IV)
Keywords
Metabolism, Absolute Bioavailability, Disposition

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • [¹⁴C]-LY3484356Drug

    Administered orally.

  • LY3484356Drug

    Administered orally.

  • [¹⁴C]-LY3484356 (IV)Drug

    Administered IV.

Study groups in NCT04991766
Study groupRoleWhat they receive
[¹⁴C]-LY3484356 (Part 1)ExperimentalParticipants received a single oral dose of 400 mg Carbon 14 labelled [¹⁴C]-LY3484356 following an overnight fast of at least 10 hours on Day 1.
Receives: Drug: [¹⁴C]-LY3484356
LY3484356 + [¹⁴C]-LY3484356 (Part 2)ExperimentalParticipants received a single oral dose of 400 mg LY3484356 following an overnight fast of at least 10 hours on Day 1, followed 4 hours later by a single dose of less than 100 microgram (μg) [¹⁴C]-LY3484356 (actual ranged from 44.55 to 45.95 μg), as an intravenous (IV) infusion on day 1.
Receives: Drug: LY3484356; Drug: [¹⁴C]-LY3484356 (IV)

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Part 1: Pharmacokinetics (PK): Fecal Excretion of LY3484356 Radioactivity Over Time Expressed as a Percentage of the Total Radioactive Dose Administered

    The percentage of the total radioactive dose administered that was excreted in feces = (amount of radioactive dose recovered in feces / total radioactive dose administered) * 100.

    Measured: Predose, 24, 48, 72, 96, 120, 144, 168,192, 216, 240, 264, 288 and 312 hours post dose

  2. Part 1: PK: Urinary Excretion of LY3484356 Radioactivity Over Time Expressed as a Percentage of the Total Radioactive Dose Administered

    The percentage of the total radioactive dose administered that was excreted in urine = (amount of radioactive dose recovered in urine / total radioactive dose administered) * 100.

    Measured: Predose, 24, 48 ,72, 96, 120, 144, 168, 192, 216, 240, 264, 288 and 312 hours post dose

  3. Part 2: Pharmacokinetics (PK): Percent Absolute Bioavailability (F%) of LY3484356

    PK: Bioavailability is defined as the percentage of a drug which enters the circulation when introduced into the body and so is able to have an active effect. Percent absolute bioavailability, calculated for plasma LY3484356 as "F %= [AUC (0-∞), LY3484356] × [Dose, [14C]-LY3484356] / [AUC (0-∞), [14C]-LY3484356] × [Dose, LY3484356] ×100%'' Higher percent indicates better absorption of drug into the body.

    Measured: Predose, 5 minutes(min), 15 min, 20 min, 30 min, 45 min, and 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, and 192 hours postdose

Secondary outcomes (11)
  1. Part 1: PK: Total Radioactivity Recovered in Urine, Feces

    Relative abundance was expressed and calculated as the percentage of administered dose excreted in urine/Feces=[(percentage of radioactivity in peak)/100]*(percentage of dose in sample).

    Measured: Predose, 24, 48, 96, 120, 144, 168, 192, 216, 240, 264, 288, 312, 336, 360, 384, 408, 432, 456 and 480 hours post dose

  2. Part 1: Total Radioactivity Recovered in Expired Air

    Radioactivity is expressed in becquerels (Bq), the International System of Unit (SI) representing one nuclear disintegration per second. For practical measurement, total radioactivity recovered in expired air is reported in disintegrations per minute (dpm). The conversion factor is: 1 Bq = 60 dpm.

    Measured: predose, 8, and 24 hours postdose

  3. Part 1: PK: Total Number of Metabolites of LY3484356 in Plasma, Urine and Feces

    Total number of metabolites of LY3484356 is reported. The value is an absolute number without any measure of central tendency.

    Measured: Plasma:Predose,24,48,72,96,120,144,168,192,216,240,264 and 288 hours(h) post dose;Urine:-12 to 0h Predose,0 to 6,6-12,and 12-24,48,72,96,120,144,168,192,216,240 and 264 hours post dose;Feces:Predose,24,48,72,96,120,144, 168,192,216,240 and 264 h post dose

  4. Part 1: PK: Area Under the Concentration-Time Curve From Time Zero to Infinity (AUC [0-∞]) for LY3484356 in Plasma

    PK: AUC [0-∞] of LY3484356 in Plasma.

    Measured: Part 1: Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8,10, 12, 24, 48, 72, 96,120, 144, 168, 192, 216, 240, and 264 hours post-dose

  5. Part 1: PK: Area Under the Concentration-Time Curve From Time Zero to Infinity (AUC [0-∞]) for Total Radioactivity in Plasma

    PK: AUC [0-∞] of Plasma Total Radioactivity.

    Total radioactivity is reported as nanogram* hours equivalents per milliliter (ng*h Eq/mL).

    Measured: Part 1: Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8,10, 12, 24, 48, 72, 96,120, 144, 168, 192, 216, 240, and 264 hours post-dose

  6. Part 1: PK: Maximum Concentration (Cmax) for LY3484356 in Plasma

    PK: Cmax for LY3484356 in plasma.

    Measured: Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8,10, 12, 24, 48, 72, 96,120, 144, 168, 192, 216, 240, and 264 hours post-dose

  7. Part 1: PK: Maximum Concentration (Cmax) for Total Radioactivity in Plasma

    PK: Cmax for total radioactivity in plasma. The Cmax of total radioactivity are reported as nanogram equivalents per milliliter (ng Eq/mL).

    Measured: Predose, 0.5, 1, 1.5, 2, 3, 4, 6, 8,10, 12, 24, 48, 72, 96,120, 144, 168, 192, 216, 240, and 264 hours post-dose

  8. Part 2: PK: Area Under the Concentration-Time Curve From Time Zero to Infinity (AUC [0-∞]) for [¹⁴C]-LY3484356 and LY3484356 in Plasma

    PK: AUC [0-∞] of Total Radioactivity.

    Total radioactivity is reported as hours*nanogram equivalents per milliliter (h*ng Eq/mL).

    Measured: Predose, 5 minutes(min), 15 min, 20 min, 30 min, 45 min, and 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, and 192 hours postdose

  9. Part 2: PK: Area Under the Concentration-Time Curve From Time Zero to Infinity (AUC [0-∞]) for Total Radioactivity in Plasma

    PK: AUC [0-∞] of Total Radioactivity in Plasma.

    Measured: Predose, 5 minutes(min), 15 min, 20 min, 30 min, 45 min, and 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, and 192 hours postdose

  10. Part 2: PK: Maximum Concentration (Cmax) for [¹⁴C]-LY3484356 and LY3484356 in Plasma

    PK: Cmax of LY3484356 and [¹⁴C]-LY3484356 in plasma.

    Measured: Predose, 5 minutes(min), 15 min, 20 min, 30 min, 45 min, and 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, and 192 hours postdose

  11. Part 2: PK: Maximum Concentration (Cmax) for Total Radioactivity in Plasma

    PK: Cmax of total radioactivity in plasma.

    Measured: Predose, 5 minutes(min), 15 min, 20 min, 30 min, 45 min, and 1, 2, 3, 4, 6, 8, 10, 12, 24, 48, 72, 96, 120, 144, 168, and 192 hours postdose

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted5 Aug 2021
  2. Study start13 Aug 2021
  3. Primary completion2 Apr 2022
  4. Study completion2 Apr 2022

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Basic science
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
16 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04991766
Sponsor's protocol ID
18205
Other IDs
J2J-MC-JZLE
Status last verified
15 Nov 2025
First submitted
2 Aug 2021
Last updated
5 Dec 2025
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing [¹⁴C]-LY3484356, LY3484356 and [¹⁴C]-LY3484356 (IV) in people with Healthy, run by Eli Lilly and Company at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 5 Dec 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 5 Dec 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Part 1: Pharmacokinetics (PK): Fecal Excretion of LY3484356 Radioactivity Over Time Expressed as a Percentage of the Total Radioactive Dose Administered (time frame: Predose, 24, 48, 72, 96, 120, 144, 168,192, 216, 240, 264, 288 and 312 hours post dose). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Dec 2025.

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