ClinicalTrials.gg
CompletedNCT03381547Willow 2Updated Jul 7, 2026Results posted

A 3-Way Crossover Study to Evaluate the Pharmacokinetics in Participants After Dosing With Pegilodecakin (LY3500518)

A Phase 1 interventional study of Pegilodecakin in Healthy Adult Subjects, sponsored by Eli Lilly and Company. Completed at 1 site in United States. Open to participants aged 18 Years to 55 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-07-07.

Sponsored by Eli Lilly and Company · Phase 1, Interventional, and Basic science

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Phase
Phase 1
Study type
Interventional
Enrollment
12
Allocation
Randomized
Ages
18 Years to 55 Years
Sex
All
01

Study summary

To evaluate the pharmacokinetics of different dose levels and dose formulations of pegilodecakin in healthy adult participants.

Read the detailed description

An open label, randomized, single dose, 3-way crossover study to evaluate the pharmacokinetics of different dose levels and dose formulations of pegilodecakin in healthy adult participants.

02

Conditions studied

  • Healthy Adult Subjects
03

In context

Lead sponsor

Eli Lilly and Company is the lead sponsor of 2,108 studies on the registry; 153 are open to participants now.

Of its 536 completed or terminated interventional studies of FDA-regulated products, 358 (67%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 55 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Male or female between 18 and 55 years of age, inclusive
  2. Must have a (BMI) between 19 and 32 (kg/m2) at study Screening
  3. Must be negative by HIV 1/0/2 testing
  4. Must be (HBV) surface antigen negative
  5. Must be (HCV) antibody negative
  6. Females must have a negative serum pregnancy test
  7. Females of must agree to utilize protocol recommended highly effective methods from Screening throughout the duration of study dosing and for 30 days following the last dose of study drug.
  8. Must refrain from blood donation from 30 days prior to Day 0 through completion of the study and continuing for at least 30 days from date of last dose of study drug

Exclusion criteria

Exclusion Criteria:

  1. Pregnant or lactating subjects
  2. Have previously participated in an trial involving administration of any investigational compound within 30 days prior to the study dosing
  3. Have poor venous access and are unable to donate blood
  4. Have been vaccinated within 90 days of study dosing
  5. Current alcohol or substance abuse judged by the Investigator to interfere with subject compliance
  6. Have history of significant drug sensitivity or drug allergy.
Terms in these criteria, in plain language(7)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 1
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
12 participants (actual)

Study arms

  • Experimental
    Pegilodecakin: Treatment A

    Participants received AM0010 (pegilodecakin) subcutaneous (SQ) doses of 0.8 mg at 4 mg/mL administered as 0.2 mL injections for body weight ≤80 kg and SQ doses of 1.6 mg at 4 mg/mL administered as 0.4 mL injections for body weight \>80 kg.

    Biological: Pegilodecakin

  • Experimental
    Pegilodecakin: Treatment B

    Participants received AM0010 (pegilodecakin) SQ doses of 0.4 mg at 4 mg/mL administered as 0.1 mL injections for body weight ≤80 kg and SQ doses of 0.8 mg at 4 mg/mL administered as 0.2 mL injections for body weight \>80 kg.

    Biological: Pegilodecakin

  • Experimental
    Pegilodecakin: Treatment C

    Participants received AM0010 (pegilodecakin) SQ doses of 0.4 mg at 2 mg/mL administered as 0.2 mL injections for body weight ≤80 kg and SQ doses of 0.8 mg at 2 mg/mL administered as 0.4 mL injections for body weight \>80 kg.

    Biological: Pegilodecakin

Interventions

  • BiologicalPegilodecakin

    Pegilodecakin alone administered SQ

    Also known as: LY3500518, AM0010

06

What researchers measure

Primary outcomes

  1. Pharmacokinetics (PK): Maximum Drug Concentration (Cmax) of Pegilodecakin

    Maximal serum concentration (Cmax) of pegilodecakin is reported.

    Time frame: Period 1: Days 1-4 and Day 8 [Predose, 2, 4, 8, 12, 16, 24, 36, 48, 72, and 168 hours post-dose (Day 8 predose)]; Period 2: Days 8-11 and Day 15 [same as Days 1-4 and Day 8 (Day 15 predose)]; Period 3: Days 15-18 and Day 22 [same as Days 1-4 and Day 8]

  2. PK: Time of Maximum Concentration (Tmax) of Pegilodecakin

    Time of maximum serum concentration (Tmax) of Pegilodecakin is reported.

    Time frame: Period 1: Days 1-4 and Day 8 [Predose, 2, 4, 8, 12, 16, 24, 36, 48, 72, and 168 hours post-dose (Day 8 predose)]; Period 2: Days 8-11 and Day 15 [same as Days 1-4 and Day 8 (Day 15 predose)]; Period 3: Days 15-18 and Day 22 [same as Days 1-4 and Day 8]

  3. PK: Area Under the Concentration-Versus-Time Curve (AUC) of Pegilodecakin

    AUC from time 0 to the time of the last quantifiable concentration \[AUC(0-tlast)\], AUC from time 0 to 72 hours \[AUC(0-72)\] and AUC from time 0 to infinity \[AUC(0-inf)\] of pegilodecakin is reported.

    Time frame: Period 1: Days 1-4 and Day 8 [Predose, 2, 4, 8, 12, 16, 24, 36, 48, 72, and 168 hours post-dose (Day 8 predose)]; Period 2: Days 8-11 and Day 15 [same as Days 1-4 and Day 8 (Day 15 predose)]; Period 3: Days 15-18 and Day 22 [same as Days 1-4 and Day 8]

  4. PK: Apparent Total Body Clearance of (CL/F) of Pegilodecakin

    Apparent total body clearance ((CL/F) is the volume of serum from which the drug is completely removed in a given time period.

    Time frame: Period 1: Days 1-4 and Day 8 [Predose, 2, 4, 8, 12, 16, 24, 36, 48, 72, and 168 hours post-dose (Day 8 predose)]; Period 2: Days 8-11 and Day 15 [same as Days 1-4 and Day 8 (Day 15 predose)]; Period 3: Days 15-18 and Day 22 [same as Days 1-4 and Day 8]

07

Results

Posted Jul 7, 2026

Participant flow

Period 1
Participant flow — Period 1
MilestoneSequence ABCSequence BACSequence CBA
Started444
Received at least 1 dose of study drug444
Completed444
Not completed000
Period 2
Participant flow — Period 2
MilestoneSequence ABCSequence BACSequence CBA
Started444
Completed444
Not completed000
Period 3
Participant flow — Period 3
MilestoneSequence ABCSequence BACSequence CBA
Started444
Completed444
Not completed000

Outcome measures

PrimaryPharmacokinetics (PK): Maximum Drug Concentration (Cmax) of Pegilodecakin

Maximal serum concentration (Cmax) of pegilodecakin is reported.

Time frame:
Period 1: Days 1-4 and Day 8 [Predose, 2, 4, 8, 12, 16, 24, 36, 48, 72, and 168 hours post-dose (Day 8 predose)]; Period 2: Days 8-11 and Day 15 [same as Days 1-4 and Day 8 (Day 15 predose)]; Period 3: Days 15-18 and Day 22 [same as Days 1-4 and Day 8]
Reported as:
Geometric mean · picogram per milliliter (pg/mL)
Pharmacokinetics (PK): Maximum Drug Concentration (Cmax) of Pegilodecakin
picogram per milliliter (pg/mL)Pegilodecakin: Treatment APegilodecakin: Treatment BPegilodecakin: Treatment C
Body Weight ≤80 kg8590 ± 513820 ± 544130 ± 81
Body Weight >80 kg18500 ± 975970 ± 7011200 ± 25
PrimaryPK: Time of Maximum Concentration (Tmax) of Pegilodecakin

Time of maximum serum concentration (Tmax) of Pegilodecakin is reported.

Time frame:
Period 1: Days 1-4 and Day 8 [Predose, 2, 4, 8, 12, 16, 24, 36, 48, 72, and 168 hours post-dose (Day 8 predose)]; Period 2: Days 8-11 and Day 15 [same as Days 1-4 and Day 8 (Day 15 predose)]; Period 3: Days 15-18 and Day 22 [same as Days 1-4 and Day 8]
Reported as:
Median · hours (h)
PK: Time of Maximum Concentration (Tmax) of Pegilodecakin
hours (h)Pegilodecakin: Treatment APegilodecakin: Treatment BPegilodecakin: Treatment C
Body Weight ≤80 kg16.00 (8.00 to 24.00)8.00 (4.00 to 12.00)12.00 (8.00 to 16.00)
Body Weight >80 kg12.00 (12.00 to 12.02)12.00 (8.00 to 24.00)12.00 (12.00 to 12.00)
PrimaryPK: Area Under the Concentration-Versus-Time Curve (AUC) of Pegilodecakin

AUC from time 0 to the time of the last quantifiable concentration \[AUC(0-tlast)\], AUC from time 0 to 72 hours \[AUC(0-72)\] and AUC from time 0 to infinity \[AUC(0-inf)\] of pegilodecakin is reported.

Time frame:
Period 1: Days 1-4 and Day 8 [Predose, 2, 4, 8, 12, 16, 24, 36, 48, 72, and 168 hours post-dose (Day 8 predose)]; Period 2: Days 8-11 and Day 15 [same as Days 1-4 and Day 8 (Day 15 predose)]; Period 3: Days 15-18 and Day 22 [same as Days 1-4 and Day 8]
Reported as:
Geometric mean · hour*picogram per milliliter (h*pg/mL)
PK: Area Under the Concentration-Versus-Time Curve (AUC) of Pegilodecakin
hour*picogram per milliliter (h*pg/mL)Pegilodecakin: Treatment APegilodecakin: Treatment BPegilodecakin: Treatment C
Body Weight ≤80 kg: AUC(0-tlast)334000 ± 54119000 ± 67149000 ± 90
Body Weight >80 kg: AUC(0-tlast)593000 ± 73187000 ± 51342000 ± 24
Body Weight ≤80 kg: AUC(0-72)306000 ± 51117000 ± 63139000 ± 83
Body Weight >80 kg: AUC(0-72)514000 ± 81176000 ± 43298000 ± 28
Body Weight ≤80 kg: AUC(0-inf)362000 ± 51134000 ± 65162000 ± 86
Body Weight >80 kg: AUC(0-inf)606000 ± 70259000 ± 13349000 ± 23
PrimaryPK: Apparent Total Body Clearance of (CL/F) of Pegilodecakin

Apparent total body clearance ((CL/F) is the volume of serum from which the drug is completely removed in a given time period.

Time frame:
Period 1: Days 1-4 and Day 8 [Predose, 2, 4, 8, 12, 16, 24, 36, 48, 72, and 168 hours post-dose (Day 8 predose)]; Period 2: Days 8-11 and Day 15 [same as Days 1-4 and Day 8 (Day 15 predose)]; Period 3: Days 15-18 and Day 22 [same as Days 1-4 and Day 8]
Reported as:
Geometric mean · Liter/hour (L/h)
PK: Apparent Total Body Clearance of (CL/F) of Pegilodecakin
Liter/hour (L/h)Pegilodecakin: Treatment APegilodecakin: Treatment BPegilodecakin: Treatment C
Body Weight ≤80 kg2.21 ± 512.98 ± 652.47 ± 86
Body Weight >80 kg2.64 ± 703.08 ± 132.29 ± 23

Adverse events

Collected over Up To 22 Days. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Pegilodecakin: Treatment A0/12 (0%)0/12 (0%)10/12 (83.3%)
Pegilodecakin: Treatment B0/12 (0%)0/12 (0%)10/12 (83.3%)
Pegilodecakin: Treatment C0/12 (0%)0/12 (0%)11/12 (91.7%)
Most frequent other events
Showing 10 of 22
Most frequent other events
EventPegilodecakin: Treatment APegilodecakin: Treatment BPegilodecakin: Treatment C
Injection site reaction left upper quadrant erythemaGeneral disorders1/120/127/12
Injection site reaction right upper quadrant erythemaGeneral disorders3/127/120/12
Injection site reaction right lower quadrant erythemaGeneral disorders4/123/124/12
Injection site reaction left upper quadrant pruritusGeneral disorders1/120/123/12
Injection site reaction right lower quadrant pruritusGeneral disorders1/122/122/12
Injection site reaction right upper quadrant pruritusGeneral disorders0/122/121/12
Eye irritationEye disorders0/121/120/12
Abdominal bloatingGastrointestinal disorders0/120/121/12
Decreased frequency of bowel movementsGastrointestinal disorders0/120/121/12
NauseaGastrointestinal disorders1/120/121/12

Baseline characteristics

All randomized participants.

Age, Continuous
Age, Continuous(years)Sequence ABCSequence BACSequence CBATotal
Mean41.0 ± 9.0633.8 ± 7.6328.8 ± 9.5734.5 ± 9.53
Sex: Female, Male
Sex: Female, Male(Participants)Sequence ABCSequence BACSequence CBATotal
Female1247
Male3205
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Sequence ABCSequence BACSequence CBATotal
Hispanic or Latino2226
Not Hispanic or Latino2226
Unknown or Not Reported0000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Sequence ABCSequence BACSequence CBATotal
American Indian or Alaska Native0000
Asian0000
Native Hawaiian or Other Pacific Islander0000
Black or African American0101
White43411
More than one race0000
Unknown or Not Reported0000
Region of Enrollment
Region of Enrollment(Participants)Sequence ABCSequence BACSequence CBATotal
United States44412
08

Study locations

1 site
  • PPD Development
    Austin, Texas 78744, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Dec 2017 to primary completion in Feb 2018, 1 month.

Results were first posted in Jul 2026, 8 years 4 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 18, 2017
First posted
Dec 22, 2017
StartActual
Dec 18, 2017
Primary completionActual
Feb 13, 2018
CompletionActual
Feb 13, 2018
Results first posted
Jul 7, 2026
Last update
Jul 7, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jul 7, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT03381547
Collaborators
ARMO BioSciences
Responsible party
Sponsor
First posted
Dec 22, 2017
Start date
Dec 18, 2017
Primary completion
Feb 13, 2018
Completion
Feb 13, 2018
Results posted
Jul 7, 2026
Last update
Jul 7, 2026

Study contacts

Call 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon - Fri 9 AM - 5 PM Eastern time (UTC/GMT - 5 hours, EST)
study director · Eli Lilly and Company

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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Studies of the drug tested here: Pegilodecakin

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