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A Study of Two Different Formulations of Pirtobrutinib (LOXO-305) In Healthy Participants

A Phase I, Open-Label, Randomized, 2-Way Crossover Study to Compare the PK of Pirtobrutinib (LOXO-305) Tablets

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06258174
Enrollment
28
Registered
2024-02-14
Start date
2021-09-28
Completion date
2021-12-22
Last updated
2025-01-13

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

Conditions

Healthy

Brief summary

The main purpose of this study is to compare two different formulations (mixtures) of pirtobrutinib (LOXO-305) in healthy participants. This study will compare how much of each formulation gets into the blood stream and how long it takes the body to remove it. Information about any side effects that may occur will be collected. The study will last up to 65 days.

Interventions

DRUGPirtobrutinib

Administered orally.

Sponsors

Loxo Oncology, Inc.
CollaboratorINDUSTRY
Eli Lilly and Company
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 55 Years
Healthy volunteers
Yes

Inclusion criteria

* Males and females of non-childbearing potential. * Within body mass index (BMI) range 18.0 to 32.0 kilograms per square meter (kg/m²). * Participants will be in good general health, based on medical history, physical examination findings, vital signs, 12 lead electrocardiogram (ECG), or clinical laboratory tests, as determined by the Investigator (or designee).

Exclusion criteria

* History or presence of any of the following, deemed clinically significant by the Investigator (or designee), and/or Sponsor: 1. liver disease 2. pancreatitis 3. peptic ulcer disease 4. intestinal malabsorption 5. cholecystectomy 6. gastric reduction surgery 7. history or presence of clinically significant cardiovascular disease. * Participants with out-of-range, at-rest vital signs. * Abnormal laboratory values determined to be clinically significant by the Investigator (or designee). * Clinically significant abnormality, as determined by the Investigator (or designee), from physical examination. * Participation in any other investigational study drug trial involving administration of any investigational drug in the past 30 days or 5 half-lives, whichever was longer, prior to Day 1. * Use or intention to use any prescription or over-the-counter medications within 14 days prior to Day 1 and through end of trial. * History or presence, upon clinical evaluation, of any illness that, in the opinion of the Investigator, would interfere with the ability to provide informed consent or comply with study instructions, or that might confound the interpretation of the study results, or put the participant at undue risk. * Donation of blood from 56 days prior to Screening, plasma or platelets from 4 weeks prior to Screening. * Receipt of blood products within 2 months prior to Check-in (Day -1). * Significant history or clinical manifestation of any metabolic, allergic, dermatological, hepatic, biliary, renal, hematological, pulmonary, cardiovascular (including any prior history of cardiomyopathy or cardiac failure), gastrointestinal (GI), neurological, or psychiatric disorder (as determined by the Investigator), or cancer within the past 5 years (except localized basal cell, squamous, or in situ cancer of the skin).

Design outcomes

Primary

MeasureTime frameDescription
Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Time 0 to 24 Hours Post-dose (AUC0-24) of PirtobrutinibPredose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdosePK: AUC0-24 of Pirtobrutinib
PK: Area Under the Concentration Versus Time Curve From Time Zero to the Last Measurable Concentration (AUC0-t) of PirtobrutinibPredose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdosePK: AUC0-t of Pirtobrutinib
PK: Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC0-inf) of PirtobrutinibPredose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdosePK: AUC0-inf of Pirtobrutinib
PK: Percentage Extrapolation for AUC0-inf (%AUCextrap) of PirtobrutinibPredose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdosePK: %AUCextrap of Pirtobrutinib
PK: Apparent Systemic Clearance (CL/F) of PirtobrutinibPredose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdosePK: CL/F of Pirtobrutinib
PK: Apparent Plasma Terminal Elimination Half-life (t1/2) of PirtobrutinibPredose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdosePK: t1/2 of Pirtobrutinib
PK: Maximum Observed Plasma Concentration (Cmax) of PirtobrutinibPredose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdosePK: Cmax of Pirtobrutinib
PK: Time to Maximum Observed Plasma Concentration (Tmax) of PirtobrutinibPredose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdosePK: Tmax of Pirtobrutinib
PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibPredose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdosePK: λZ of Pirtobrutinib
PK: Apparent Volume of Distribution During the Terminal Phase (Vz/F) of PirtobrutinibPredose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdosePK: Vz/F of Pirtobrutinib

Countries

United States

Participant flow

Recruitment details

Participants were randomized to 2 treatment sequences (R/T, T/R), with each sequence having 2 periods where participants were crossed over between the periods. A washout period of 7 days was maintained between doses of each treatment period.

Participants by arm

ArmCount
200 mg Pirtobrutinib (Sequence R/T)
Period 1: Participants received a reference formulation (R) of oral pirtobrutinib 200 mg on day 1. Period 2: Participants received a test formulation (T) of oral pirtobrutinib 200 mg on day 8. There was a washout period of 7 days between the doses of pirtobrutinib.
14
200 mg Pirtobrutinib (Sequence T/R)
Period 1: Participants received a test formulation (T) of oral pirtobrutinib 200 mg on day 1. Period 2: Participants received a reference formulation (R) of oral pirtobrutinib 200 mg on day 8. There was a washout period of 7 days between the doses of pirtobrutinib.
14
Total28

Baseline characteristics

Characteristic200 mg Pirtobrutinib (Sequence R/T)Total200 mg Pirtobrutinib (Sequence T/R)
Age, Continuous40.2 years
STANDARD_DEVIATION 6.86
36.9 years
STANDARD_DEVIATION 9.05
33.5 years
STANDARD_DEVIATION 9.94
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants5 Participants2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
11 Participants23 Participants12 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
2 Participants4 Participants2 Participants
Race (NIH/OMB)
Black or African American
5 Participants8 Participants3 Participants
Race (NIH/OMB)
More than one race
1 Participants2 Participants1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
6 Participants14 Participants8 Participants
Region of Enrollment
United States
14 Participants28 Participants14 Participants
Sex: Female, Male
Female
2 Participants3 Participants1 Participants
Sex: Female, Male
Male
12 Participants25 Participants13 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 280 / 28
other
Total, other adverse events
0 / 281 / 28
serious
Total, serious adverse events
0 / 280 / 28

Outcome results

Primary

Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Time 0 to 24 Hours Post-dose (AUC0-24) of Pirtobrutinib

PK: AUC0-24 of Pirtobrutinib

Time frame: Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose

Population: All randomized participants who received a dose of pirtobrutinib, had at least 1 quantifiable plasma concentration, and for whom at least 1 PK parameter was computed.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
200 mg Pirtobrutinib (Reference Formulation)Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Time 0 to 24 Hours Post-dose (AUC0-24) of Pirtobrutinib48800 hour*nanogram per milliliter (h*ng/mL)Geometric Coefficient of Variation 29.1
200 mg Pirtobrutinib (Test Formulation)Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Time 0 to 24 Hours Post-dose (AUC0-24) of Pirtobrutinib49700 hour*nanogram per milliliter (h*ng/mL)Geometric Coefficient of Variation 20.6
Primary

PK: Apparent Plasma Terminal Elimination Half-life (t1/2) of Pirtobrutinib

PK: t1/2 of Pirtobrutinib

Time frame: Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose

Population: All randomized participants who received a dose of pirtobrutinib, had at least 1 quantifiable plasma concentration, and for whom at least 1 PK parameter was computed.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Plasma Terminal Elimination Half-life (t1/2) of Pirtobrutinib18.9 hoursGeometric Coefficient of Variation 21.2
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Plasma Terminal Elimination Half-life (t1/2) of Pirtobrutinib19 hoursGeometric Coefficient of Variation 20.3
Primary

PK: Apparent Systemic Clearance (CL/F) of Pirtobrutinib

PK: CL/F of Pirtobrutinib

Time frame: Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose

Population: All randomized participants who received a dose of pirtobrutinib, had at least 1 quantifiable plasma concentration, and for whom at least 1 PK parameter was computed.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Systemic Clearance (CL/F) of Pirtobrutinib2.44 liter per hour (L/h)Geometric Coefficient of Variation 35.5
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Systemic Clearance (CL/F) of Pirtobrutinib2.36 liter per hour (L/h)Geometric Coefficient of Variation 24.4
Primary

PK: Apparent Terminal Elimination Rate Constant (λZ) of Pirtobrutinib

PK: λZ of Pirtobrutinib

Time frame: Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose

Population: All randomized participants who received a dose of pirtobrutinib, had at least 1 quantifiable plasma concentration, and for whom at least 1 PK parameter was computed.

ArmMeasureGroupValue (NUMBER)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 130.0324 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 30.0549 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 140.0198 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 60.0382 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 150.0409 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 10.0487 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 160.0457 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 70.0355 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 180.0305 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 190.0407 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 80.0335 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 200.0290 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 210.0293 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 20.0420 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 220.0408 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 90.0414 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 230.0340 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 40.0446 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 240.0269 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 100.0431 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 250.0372 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 110.0358 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 260.0359 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 170.0279 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 270.0370 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 120.0432 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 280.0360 1/hour (1/h)
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 50.0406 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 280.0368 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 30.0563 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 170.0284 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 200.0350 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 100.0437 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 10.0347 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 40.0386 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 50.0382 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 60.0389 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 70.0348 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 80.0341 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 90.0390 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 110.0321 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 120.0427 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 130.0382 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 140.0179 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 150.0371 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 160.0451 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 180.0299 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 190.0478 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 210.0342 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 220.0403 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 230.0322 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 240.0299 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 250.0379 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 260.0396 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 270.0369 1/hour (1/h)
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Terminal Elimination Rate Constant (λZ) of PirtobrutinibSubject 20.0374 1/hour (1/h)
Primary

PK: Apparent Volume of Distribution During the Terminal Phase (Vz/F) of Pirtobrutinib

PK: Vz/F of Pirtobrutinib

Time frame: Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose

Population: All randomized participants who received a dose of pirtobrutinib, had at least 1 quantifiable plasma concentration, and for whom at least 1 PK parameter was computed.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
200 mg Pirtobrutinib (Reference Formulation)PK: Apparent Volume of Distribution During the Terminal Phase (Vz/F) of Pirtobrutinib66.6 Liter (L)Geometric Coefficient of Variation 36.7
200 mg Pirtobrutinib (Test Formulation)PK: Apparent Volume of Distribution During the Terminal Phase (Vz/F) of Pirtobrutinib64.9 Liter (L)Geometric Coefficient of Variation 28.4
Primary

PK: Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC0-inf) of Pirtobrutinib

PK: AUC0-inf of Pirtobrutinib

Time frame: Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose

Population: All randomized participants who received a dose of pirtobrutinib, had at least 1 quantifiable plasma concentration, and for whom at least 1 PK parameter was computed.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
200 mg Pirtobrutinib (Reference Formulation)PK: Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC0-inf) of Pirtobrutinib82000 hour*nanogram per milliliter (h*ng/mL)Geometric Coefficient of Variation 35.5
200 mg Pirtobrutinib (Test Formulation)PK: Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC0-inf) of Pirtobrutinib84700 hour*nanogram per milliliter (h*ng/mL)Geometric Coefficient of Variation 24.4
Primary

PK: Area Under the Concentration Versus Time Curve From Time Zero to the Last Measurable Concentration (AUC0-t) of Pirtobrutinib

PK: AUC0-t of Pirtobrutinib

Time frame: Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose

Population: All randomized participants who received a dose of pirtobrutinib, had at least 1 quantifiable plasma concentration, and for whom at least 1 PK parameter was computed.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
200 mg Pirtobrutinib (Reference Formulation)PK: Area Under the Concentration Versus Time Curve From Time Zero to the Last Measurable Concentration (AUC0-t) of Pirtobrutinib81100 hour*nanogram per milliliter (h*ng/mL)Geometric Coefficient of Variation 36
200 mg Pirtobrutinib (Test Formulation)PK: Area Under the Concentration Versus Time Curve From Time Zero to the Last Measurable Concentration (AUC0-t) of Pirtobrutinib83600 hour*nanogram per milliliter (h*ng/mL)Geometric Coefficient of Variation 24.7
Primary

PK: Maximum Observed Plasma Concentration (Cmax) of Pirtobrutinib

PK: Cmax of Pirtobrutinib

Time frame: Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose

Population: All randomized participants who received a dose of pirtobrutinib, had at least 1 quantifiable plasma concentration, and for whom at least 1 PK parameter was computed.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
200 mg Pirtobrutinib (Reference Formulation)PK: Maximum Observed Plasma Concentration (Cmax) of Pirtobrutinib3960 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 23.3
200 mg Pirtobrutinib (Test Formulation)PK: Maximum Observed Plasma Concentration (Cmax) of Pirtobrutinib3980 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 24.2
Primary

PK: Percentage Extrapolation for AUC0-inf (%AUCextrap) of Pirtobrutinib

PK: %AUCextrap of Pirtobrutinib

Time frame: Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose

Population: All randomized participants who received a dose of pirtobrutinib, had at least 1 quantifiable plasma concentration, and for whom at least 1 PK parameter was computed.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
200 mg Pirtobrutinib (Reference Formulation)PK: Percentage Extrapolation for AUC0-inf (%AUCextrap) of Pirtobrutinib1.01 percentage of AUCextrapGeometric Coefficient of Variation 46.9
200 mg Pirtobrutinib (Test Formulation)PK: Percentage Extrapolation for AUC0-inf (%AUCextrap) of Pirtobrutinib1.12 percentage of AUCextrapGeometric Coefficient of Variation 36.7
Primary

PK: Time to Maximum Observed Plasma Concentration (Tmax) of Pirtobrutinib

PK: Tmax of Pirtobrutinib

Time frame: Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose

Population: Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24, 48, 72, 96, 120, 144, and 168 hours postdose

ArmMeasureValue (MEDIAN)
200 mg Pirtobrutinib (Reference Formulation)PK: Time to Maximum Observed Plasma Concentration (Tmax) of Pirtobrutinib2.50 hours
200 mg Pirtobrutinib (Test Formulation)PK: Time to Maximum Observed Plasma Concentration (Tmax) of Pirtobrutinib2.50 hours

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