HealthyPhase 1NCT06215430

A Study of Effect of Multiple Doses of LOXO-305 on the Pharmacokinetics of Single Oral Doses of CYP1A2, CYP2C9, CYP2C19 Substrates in Healthy Participants

A Phase 1 study testing Caffeine Tablet, Omeprazole capsule and Warfarin tablet 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

Who is it for?: Ages 18 to 55 yearsHealthy volunteers can take part
Conditions the study is for: Healthy
What is being tested?: Caffeine Tablet, Omeprazole capsule and Warfarin tablet
Type of treatment: Pill or oral medicine
Could I receive a placebo?: No, everyone receives an active treatment
How many people: 16 participants
Where: 1 siteUnited States
Study dates: 11 Jan 2021to 15 Apr 2021
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 55 years
All sexes
Healthy volunteers accepted
Adult

Who may be able to join

Must have Body mass index (BMI) within the range of 18.0 to 32.0 kilograms per square meter (kg/m^2), inclusive.
Male and female participants in good health, determined by no clinically significant findings from medical history, 12-lead Electrocardiogram (ECG), vital sign measurements, or clinical laboratory evaluations as assessed by the investigator.
Female participants of non-childbearing potential and male participants who follow standard contraceptive methods.
Must have comply with all study procedures, including the 23-night stay at the Clinical Research Unit (CRU) and follow-up phone call.

Who cannot join

History or presence of any diseases or conditions of clinical significance by the Investigator (or designee) and/or Sponsor.
Known ongoing alcohol and/or drug abuse within 2 years prior to Screening.
History of significant hypersensitivity, intolerance, or allergy to any drug compound, food, or other substance, unless approved by the Investigator (or designee).

Trial locations and contacts

1 site in 1 country.

United States1 site

Covance Clinical Research Unit
Dallas, Texas, 75247

Other trials in United States

About this study

Official title: A Phase I, Open-label, Fixed-sequence, Drug Interaction Study to Investigate the Effect of Multiple Oral Doses of LOXO-305 on CYP1A2, CYP2C9, and CYP2C19 Substrates Using a Probe Drug Cocktail in Healthy Subjects

The main purpose of this study is to evaluate the effect of LOXO-305 on single oral dose of caffeine cytochrome P450 1A2 (CYP1A2) substrate, S-warfarin (CYP2C9 substrate), and omeprazole (CYP2C19 substrate) when administered as multiple doses by collecting the blood samples and conducting the blood tests to measure how much LOXO-305 is in the bloodstream and how the body handles and eliminates LOXO-305 in adult healthy participants. The study will also evaluate the safety and tolerability of LOXO-305. The study will be conducted in two periods. Participants will stay in this study for up to 67 days, including screening.

Conditions: Healthy
Being tested: Caffeine Tablet, Omeprazole capsule, Warfarin tablet, Pirtobrutinib

What participants receive

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

Caffeine TabletDrug
Administered orally.
Omeprazole capsuleDrug
Administered orally.
Warfarin tabletDrug
Administered orally.
PirtobrutinibDrug
Also called LOXO-305, LY3527727
Administered orally.

Study groups in NCT06215430
Study group	Role	What they receive
Period 1: Probe Drug Cocktail	Experimental	Participants received 200 milligrams (mg) caffeine tablet, 40 mg omeprazole capsule, and 10 mg warfarin tablet as a single dose of probe drug cocktail, along with 10 mg vitamin K tablet on Day 1. Receives: Drug: Caffeine Tablet; Drug: Omeprazole capsule; Drug: Warfarin tablet
Period 2: Pirtobrutinib + Probe Drug Cocktail	Experimental	Participants received oral dose of 200 mg Pirtobrutinib once daily (QD) from Day 6 to Day 19. On Day 15, Pirtobrutinib was co-administered with 200 mg caffeine tablet, 40 mg omeprazole capsule, and 10 mg warfarin tablet as a single dose of probe drug cocktail, along with 10 mg vitamin K tablet. There was a 5-day washout period between the probe drug cocktail on Day 1 (Period 1) and the first dose of Pirtobrutinib on Day 6 (Period 2). Receives: Drug: Caffeine Tablet; Drug: Omeprazole capsule; Drug: Warfarin tablet; Drug: Pirtobrutinib

What is being measured

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

Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Caffeine
Area under the concentration time curve (AUC) from hour 0 to 24 hours post-dose (AUC0-24) of caffeine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Paraxanthine
AUC0-24 of Paraxanthine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Omeprazole
AUC0-24 of Omeprazole was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Warfarin
AUC(0-24) of Warfarin was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Pirtobrutinib
AUC0-24 of Pirtobrutinib was reported.
Measured: Period 2, Day 15 (0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours Post dose)
Area Under the Concentration-time Curve (AUC), From Hour 0 to the Last Measurable Concentration (AUC0-t): Caffeine
AUC from hour 0 to the last measurable concentration (AUC0-t) of caffeine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Area Under the Concentration-time Curve (AUC), From Hour 0 to the Last Measurable Concentration (AUC0-t): Paraxanthine
AUC0-t of Paraxanthine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Area Under the Concentration Time Curve (AUC) From Hour 0 to the Last Measurable Concentration (AUC0-t): Omeprazole
AUC0-t of Omeprazole was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
Area Under the Concentration Time Curve (AUC) From Hour 0 to the Last Measurable Concentration (AUC0-t): Warfarin
AUC0-t of Warfarin was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
Area Under the Concentration Time Curve (AUC) From Hour 0 to the Last Measurable Concentration (AUC0-t): Pirtobrutinib
AUC0-t of Pirtobrutinib was reported.
Measured: Period 2, Day 15 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, and 192 hours postdose)
Area Under the Concentration Time Curve (AUC) From Hour 0 Extrapolated to Infinity (AUC0-inf): Caffeine
AUC from hour 0 extrapolated to infinity (AUC0-inf) of Caffeine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Area Under the Concentration Time Curve (AUC) From Hour 0 Extrapolated to Infinity (AUC0-inf): Paraxanthine
AUC0-inf of Paraxanthine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Area Under the Concentration Time Curve (AUC) From Hour 0 Extrapolated to Infinity (AUC0-inf): Omeprazole
AUC0-inf of omeprazole was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
Area Under the Concentration Time Curve (AUC) From Hour 0 Extrapolated to Infinity (AUC0-inf): Warfarin
AUC0-inf of Warfarin was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
Percentage Extrapolation for AUC0-inf (%AUCextrap): Caffeine
AUC0-inf (%AUCextrap) of caffeine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Percentage Extrapolation for AUC0-inf (%AUCextrap): Paraxanthine
AUC0-inf (%AUCextrap) of Paraxanthine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Percentage Extrapolation for AUC0-inf (%AUCextrap): Omeprazole
%AUCextrap of omeprazole was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
Percentage Extrapolation for AUC0-inf (%AUCextrap): Warfarin
%AUCextrap of Warfarin was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
Apparent Systemic Clearance (CL/F): Caffeine
CL/F for caffeine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Apparent Systemic Clearance (CL/F): Omeprazole
CL/F of omeprazole was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
Apparent Systemic Clearance (CL/F): Warfarin
CL/F of warfarin was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
Apparent Systemic Clearance (CL/F): Pirtobrutinib
CL/F of Pirtobrutinib was reported.
Measured: Period 2, Day 15 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, and 192 hours postdose)
Maximum Observed Plasma Concentration (Cmax): Caffeine
Cmax of caffeine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Maximum Observed Plasma Concentration (Cmax): Paraxanthine
Cmax of Paraxanthine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Maximum Observed Plasma Concentration (Cmax): Omeprazole
Cmax of omeprazole was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
Maximum Observed Plasma Concentration (Cmax): Warfarin
Cmax of warfarin was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
Maximum Observed Plasma Concentration (Cmax): Pirtobrutinib
Cmax of Pirtobrutinib was reported.
Measured: Period 2, Day 15 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, and 192 hours postdose)
Time to Maximum Observed Plasma Concentration (Tmax): Caffeine
Tmax of caffeine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Time to Maximum Observed Plasma Concentration (Tmax): Paraxanthine
Tmax of Paraxanthine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Time to Maximum Observed Plasma Concentration (Tmax): Omeprazole
Tmax of omeprazole was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
Time to Maximum Observed Plasma Concentration (Tmax): Warfarin
Tmax of warfarin was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
Time to Maximum Observed Plasma Concentration (Tmax): Pirtobrutinib
Tmax of Pirtobrutinib was reported.
Measured: Period 2, Day 15 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, and 192 hours postdose)
Apparent Terminal Elimination Rate Constant (λZ): Caffeine
λZ of caffeine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Apparent Terminal Elimination Rate Constant (λZ): Paraxanthine
λZ of Paraxanthine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Apparent Terminal Elimination Rate Constant (λZ): Omeprazole
λZ of omeprazole was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
Apparent Terminal Elimination Rate Constant (λZ): Warfarin
λZ of warfarin was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
Apparent Volume of Distribution at Terminal Phase (Vz/F): Caffeine
Vz/F of caffeine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Apparent Volume of Distribution at Terminal Phase (Vz/F): Omeprazole
Vz/F of omeprazole was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
Apparent Volume of Distribution at Terminal Phase (Vz/F): Warfarin
Vz/F of Warfarin was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
Metabolite to Parent Drug AUC Ratio (MRAUC): AUC Ratio of Paraxanthine to Caffeine
AUC Ratio of paraxanthine (Metabolite) to caffeine (Parent drug) was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Mean Residence Time (MRT): Caffeine
MRT of caffeine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Mean Residence Time (MRT): Paraxanthine
MRT of Paraxanthine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Mean Residence Time (MRT): Omeprazole
MRT of omeprazole was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
Mean Residence Time (MRT): Warfarin
MRT of warfarin was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
Apparent Terminal Elimination Half-Life (t1/2): Caffeine
t1/2 of caffeine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Apparent Terminal Elimination Half-Life (t1/2): Paraxanthine
t1/2 of Paraxanthine was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Apparent Terminal Elimination Half-Life (t1/2): Omeprazole
t1/2 of omeprazole was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
Apparent Terminal Elimination Half-Life (t1/2): Warfarin
t1/2 of warfarin was reported.
Measured: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)

Timeline

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

11 Jan 202115 Apr 2021

First posted22 Jan 2024
Study start11 Jan 2021
Primary completion15 Apr 2021
Study completion15 Apr 2021

Resources

Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
Other trials for HealthyStudies of the same condition, open and under way.
More trials run by Eli Lilly and CompanyThe sponsor's other registered studies.
What the trial phases meanHow a treatment moves from first tests in people to approval.

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: Sequential
Masking: None (open label)
Enrolment: 16 participants (actual)

IDs, dates and publications

ClinicalTrials.gov ID: NCT06215430
Sponsor's protocol ID: LOXO-BTK-20010
Other IDs: J2N-OX-JZNE
Status last verified: Feb 2025
First submitted: 15 Dec 2023
Last updated: 10 Mar 2025
Results posted: Yes, on ClinicalTrials.gov
Data monitoring committee: No
FDA-regulated drug: Yes
FDA-regulated device: No
Individual data sharing: No

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Study at a glance

From the registry record, last updated by the sponsor on 10 Mar 2025. Recruitment status is as the sponsor reported it: confirm with the study team.

Official title: A Phase I, Open-label, Fixed-sequence, Drug Interaction Study to Investigate the Effect of Multiple Oral Doses of LOXO-305 on CYP1A2, CYP2C9, and CYP2C19 Substrates Using a Probe Drug Cocktail in Healthy Subjects
ClinicalTrials.gov ID: NCT06215430
Acronym / sponsor ID: LOXO-BTK-20010
Conditions: Healthy
Phase: Phase 1
Study type: Interventional
Recruitment status: Completed
Enrolment: 16 participants (actual)
Lead sponsor: Eli Lilly and CompanyIndustry (pharma, biotech, devices)
Collaborators: Loxo Oncology, Inc.
Study start: 11 Jan 2021 (actual)
Primary completion: 15 Apr 2021 (actual)
Study completion: 15 Apr 2021 (actual)
First posted: 22 Jan 2024 (actual)
Results: Posted 10 Mar 2025

Clinical summary

The research question as the sponsor registered it. This describes what the study plans to test, not what it found.

Study design

Primary purpose: Basic science
Allocation: Non-randomised
Intervention model: Sequential
Masking: None (open label)
Number of arms: 2

Arm	Type	Receives
Period 1: Probe Drug Cocktail	Experimental	Drug: Caffeine Tablet, Drug: Omeprazole capsule, Drug: Warfarin tabletParticipants received 200 milligrams (mg) caffeine tablet, 40 mg omeprazole capsule, and 10 mg warfarin tablet as a single dose of probe drug cocktail, along with 10 mg vitamin K tablet on Day 1.
Period 2: Pirtobrutinib + Probe Drug Cocktail	Experimental	Drug: Caffeine Tablet, Drug: Omeprazole capsule, Drug: Warfarin tablet, Drug: PirtobrutinibParticipants received oral dose of 200 mg Pirtobrutinib once daily (QD) from Day 6 to Day 19. On Day 15, Pirtobrutinib was co-administered with 200 mg caffeine tablet, 40 mg omeprazole capsule, and 10 mg warfarin tablet as a single dose of probe drug cocktail, along with 10 mg vitamin K tablet. There was a 5-day washout period between the probe drug cocktail on Day 1 (Period 1) and the first dose of Pirtobrutinib on Day 6 (Period 2).

Who may qualify

Ages: 18 to 55 years
Sex: All
Healthy volunteers: Accepted
Age groups: Adult

Key inclusion criteria (4 listed)

Must have Body mass index (BMI) within the range of 18.0 to 32.0 kilograms per square meter (kg/m^2), inclusive.
Male and female participants in good health, determined by no clinically significant findings from medical history, 12-lead Electrocardiogram (ECG), vital sign measurements, or clinical laboratory evaluations as assessed by the investigator.
Female participants of non-childbearing potential and male participants who follow standard contraceptive methods.
Must have comply with all study procedures, including the 23-night stay at the Clinical Research Unit (CRU) and follow-up phone call.

Key exclusion criteria (3 listed)

History or presence of any diseases or conditions of clinical significance by the Investigator (or designee) and/or Sponsor.
Known ongoing alcohol and/or drug abuse within 2 years prior to Screening.
History of significant hypersensitivity, intolerance, or allergy to any drug compound, food, or other substance, unless approved by the Investigator (or designee).

Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.

Interventions

Intervention	Type	Arms
Caffeine TabletAdministered orally.	Drug	Period 1: Probe Drug Cocktail, Period 2: Pirtobrutinib + Probe Drug Cocktail
Omeprazole capsuleAdministered orally.	Drug	Period 1: Probe Drug Cocktail, Period 2: Pirtobrutinib + Probe Drug Cocktail
Warfarin tabletAdministered orally.	Drug	Period 1: Probe Drug Cocktail, Period 2: Pirtobrutinib + Probe Drug Cocktail
PirtobrutinibAlso: LOXO-305, LY3527727Administered orally.	Drug	Period 2: Pirtobrutinib + Probe Drug Cocktail

Primary outcome

Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Caffeine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Area under the concentration time curve (AUC) from hour 0 to 24 hours post-dose (AUC0-24) of caffeine was reported.
Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Paraxanthine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
AUC0-24 of Paraxanthine was reported.
Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Omeprazole
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
AUC0-24 of Omeprazole was reported.
Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Warfarin
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
AUC(0-24) of Warfarin was reported.
Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Pirtobrutinib
Time frame: Period 2, Day 15 (0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours Post dose)
AUC0-24 of Pirtobrutinib was reported.
Area Under the Concentration-time Curve (AUC), From Hour 0 to the Last Measurable Concentration (AUC0-t): Caffeine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
AUC from hour 0 to the last measurable concentration (AUC0-t) of caffeine was reported.
Area Under the Concentration-time Curve (AUC), From Hour 0 to the Last Measurable Concentration (AUC0-t): Paraxanthine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
AUC0-t of Paraxanthine was reported.
Area Under the Concentration Time Curve (AUC) From Hour 0 to the Last Measurable Concentration (AUC0-t): Omeprazole
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
AUC0-t of Omeprazole was reported.
Area Under the Concentration Time Curve (AUC) From Hour 0 to the Last Measurable Concentration (AUC0-t): Warfarin
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
AUC0-t of Warfarin was reported.
Area Under the Concentration Time Curve (AUC) From Hour 0 to the Last Measurable Concentration (AUC0-t): Pirtobrutinib
Time frame: Period 2, Day 15 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, and 192 hours postdose)
AUC0-t of Pirtobrutinib was reported.
Area Under the Concentration Time Curve (AUC) From Hour 0 Extrapolated to Infinity (AUC0-inf): Caffeine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
AUC from hour 0 extrapolated to infinity (AUC0-inf) of Caffeine was reported.
Area Under the Concentration Time Curve (AUC) From Hour 0 Extrapolated to Infinity (AUC0-inf): Paraxanthine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
AUC0-inf of Paraxanthine was reported.
Area Under the Concentration Time Curve (AUC) From Hour 0 Extrapolated to Infinity (AUC0-inf): Omeprazole
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
AUC0-inf of omeprazole was reported.
Area Under the Concentration Time Curve (AUC) From Hour 0 Extrapolated to Infinity (AUC0-inf): Warfarin
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
AUC0-inf of Warfarin was reported.
Percentage Extrapolation for AUC0-inf (%AUCextrap): Caffeine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
AUC0-inf (%AUCextrap) of caffeine was reported.
Percentage Extrapolation for AUC0-inf (%AUCextrap): Paraxanthine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
AUC0-inf (%AUCextrap) of Paraxanthine was reported.
Percentage Extrapolation for AUC0-inf (%AUCextrap): Omeprazole
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
%AUCextrap of omeprazole was reported.
Percentage Extrapolation for AUC0-inf (%AUCextrap): Warfarin
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
%AUCextrap of Warfarin was reported.
Apparent Systemic Clearance (CL/F): Caffeine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
CL/F for caffeine was reported.
Apparent Systemic Clearance (CL/F): Omeprazole
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
CL/F of omeprazole was reported.
Apparent Systemic Clearance (CL/F): Warfarin
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
CL/F of warfarin was reported.
Apparent Systemic Clearance (CL/F): Pirtobrutinib
Time frame: Period 2, Day 15 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, and 192 hours postdose)
CL/F of Pirtobrutinib was reported.
Maximum Observed Plasma Concentration (Cmax): Caffeine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Cmax of caffeine was reported.
Maximum Observed Plasma Concentration (Cmax): Paraxanthine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Cmax of Paraxanthine was reported.
Maximum Observed Plasma Concentration (Cmax): Omeprazole
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
Cmax of omeprazole was reported.
Maximum Observed Plasma Concentration (Cmax): Warfarin
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
Cmax of warfarin was reported.
Maximum Observed Plasma Concentration (Cmax): Pirtobrutinib
Time frame: Period 2, Day 15 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, and 192 hours postdose)
Cmax of Pirtobrutinib was reported.
Time to Maximum Observed Plasma Concentration (Tmax): Caffeine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Tmax of caffeine was reported.
Time to Maximum Observed Plasma Concentration (Tmax): Paraxanthine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Tmax of Paraxanthine was reported.
Time to Maximum Observed Plasma Concentration (Tmax): Omeprazole
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
Tmax of omeprazole was reported.
Time to Maximum Observed Plasma Concentration (Tmax): Warfarin
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
Tmax of warfarin was reported.
Time to Maximum Observed Plasma Concentration (Tmax): Pirtobrutinib
Time frame: Period 2, Day 15 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, and 192 hours postdose)
Tmax of Pirtobrutinib was reported.
Apparent Terminal Elimination Rate Constant (λZ): Caffeine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
λZ of caffeine was reported.
Apparent Terminal Elimination Rate Constant (λZ): Paraxanthine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
λZ of Paraxanthine was reported.
Apparent Terminal Elimination Rate Constant (λZ): Omeprazole
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
λZ of omeprazole was reported.
Apparent Terminal Elimination Rate Constant (λZ): Warfarin
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
λZ of warfarin was reported.
Apparent Volume of Distribution at Terminal Phase (Vz/F): Caffeine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
Vz/F of caffeine was reported.
Apparent Volume of Distribution at Terminal Phase (Vz/F): Omeprazole
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
Vz/F of omeprazole was reported.
Apparent Volume of Distribution at Terminal Phase (Vz/F): Warfarin
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
Vz/F of Warfarin was reported.
Metabolite to Parent Drug AUC Ratio (MRAUC): AUC Ratio of Paraxanthine to Caffeine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
AUC Ratio of paraxanthine (Metabolite) to caffeine (Parent drug) was reported.
Mean Residence Time (MRT): Caffeine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
MRT of caffeine was reported.
Mean Residence Time (MRT): Paraxanthine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
MRT of Paraxanthine was reported.
Mean Residence Time (MRT): Omeprazole
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
MRT of omeprazole was reported.
Mean Residence Time (MRT): Warfarin
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
MRT of warfarin was reported.
Apparent Terminal Elimination Half-Life (t1/2): Caffeine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
t1/2 of caffeine was reported.
Apparent Terminal Elimination Half-Life (t1/2): Paraxanthine
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)
t1/2 of Paraxanthine was reported.
Apparent Terminal Elimination Half-Life (t1/2): Omeprazole
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48 hours postdose)
t1/2 of omeprazole was reported.
Apparent Terminal Elimination Half-Life (t1/2): Warfarin
Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120 hours postdose)
t1/2 of warfarin was reported.

Results and safety

Results posted to the registry on 10 Mar 2025, as reported by the sponsor. Figures are copied from the record, not re-analysed. Full results on ClinicalTrials.gov.

Participant flow

Group	Started	Completed
Period 1: Probe Drug Cocktail	16	16
Period 2: Pirtobrutinib + Probe Drug Cocktail	0	0

Primary outcome: Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Caffeine

Time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose). Geometric mean (Geometric Coefficient of Variation). Unit: hour*nanogram per milliliter (h*ng/mL)

Measure	Period 1: Probe Drug Cocktail n = 16	Period 2: Pirtobrutinib + Probe Drug Cocktail n = 16
Value	39100 (31.8)	37400 (31.8)

Population analysed: All participants who received a dose of study drug, had at least 1 quantifiable plasma concentration, and for whom at least 1 PK parameter could be computed.

Primary outcome: Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Paraxanthine

Measure	Period 1: Probe Drug Cocktail n = 16	Period 2: Pirtobrutinib + Probe Drug Cocktail n = 4
Value	20600 (12.1)	18600 (17.7)

Population analysed: All participants who received a dose of study drug, had at least 1 quantifiable plasma concentration, and for whom at least 1 PK parameter could be computed. Here 'overall number of participants analyzed' signifies participants with available data for this outcome measure.

Primary outcome: Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Omeprazole

Measure	Period 1: Probe Drug Cocktail n = 16	Period 2: Pirtobrutinib + Probe Drug Cocktail n = 16
Value	2000 (100.9)	3120 (61.6)

Population analysed: All participants who received a dose of study drug, had at least 1 quantifiable plasma concentration, and for whom at least 1 PK parameter could be computed.

Primary outcome: Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Warfarin

Measure	Period 1: Probe Drug Cocktail n = 16	Period 2: Pirtobrutinib + Probe Drug Cocktail n = 16
Value	7320 (19.7)	7880 (18.3)

Population analysed: All participants who received a dose of study drug, had at least 1 quantifiable plasma concentration, and for whom at least 1 PK parameter could be computed.

Adverse events

Time frame: From Baseline up to End of Study i.e. 30 days.. Other adverse events reported at 5% frequency or more

Group	Serious adverse events	Other adverse events	Deaths
Probe Drug Cocktail	0 of 16 (0%)	3 of 16 (18.8%)	0 of 16
Pirtobrutinib 200 mg QD	0 of 16 (0%)	8 of 16 (50%)	0 of 16
Pirtobrutinib 200 mg QD + Probe Drug Cocktail	0 of 16 (0%)	1 of 16 (6.3%)	0 of 16

Loading the posted results from ClinicalTrials.gov…

Research links

Official record on ClinicalTrials.govLast updated by the sponsor 10 Mar 2025.
Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
Individual participant dataSharing planned: No

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Referral and contact

AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.

Renee Ward, MD, PhD study director

Loxo Oncology, Inc.

1 site in 1 country: see every site and its status.

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Caffeine Tablet, Omeprazole capsule and Warfarin tablet 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 4 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 10 Mar 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 10 Mar 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?

Area Under the Concentration Time Curve (AUC) From Hour 0 to 24 Hours Post-Dose (AUC0-24): Caffeine (time frame: Period 1, Day 1 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose); Period 2, Day 15 (Predose and 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours postdose)). The study lists 48 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06215430.

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 10 Mar 2025.