Skip to content

A Study of the Effect of Food on Pirtobrutinib (LOXO-305) in Healthy Participants

A Phase I, Open-Label, Randomized, 2-Way Crossover Study to Investigate the Effect of Food on the Pharmacokinetics of a Single Oral Dose of Pirtobrutinib (LOXO-305) in Healthy Subjects

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06180980
Enrollment
20
Registered
2023-12-26
Start date
2021-01-04
Completion date
2021-03-08
Last updated
2025-03-07

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 conduct blood tests to measure how much pirtobrutinib (LOXO-305) is in the bloodstream and how the body handles and eliminates pirtobrutinib (LOXO-305) after meals and on an empty stomach. The study will also evaluate the safety and tolerability of pirtobrutinib (LOXO-305). Participants will stay in this study for up to 53 days (screening through follow-up call).

Interventions

DRUGPirtobrutinib

Administered orally.

Sponsors

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

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Must have Body mass index (BMI) within the range of 18.0 to 32.0 kilograms per square meter (kg/m²), inclusive at Screening * 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 15-night stay at the Clinical Research Unit (CRU) and follow-up phone call

Exclusion criteria

* History or presence of any diseases or conditions of clinical significance by the Investigator (or designee) and/or Sponsor * Positive serologic test for hepatitis B surface antigen (HBsAg), hepatitis B virus immunoglobulin M (HBV IgM) core antibody, hepatitis C virus (HCV) antibody, or human immunodeficiency virus (HIV) antibody at Screening. * Positive polymerase chain reaction (PCR) test for COVID-19 at Screening * 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) * Have previously received pirtobrutinib (LOXO-305) in any other study investigating pirtobrutinib (LOXO-305), within 30 days prior to Day 1

Design outcomes

Primary

MeasureTime frameDescription
Pharmacokinetics (PK): Area Under the Concentration-time Curve, From Time 0 to 24 Hours Post-dose (AUC0-24) of PirtobrutinibPre-dose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, and 24 hours post-dose on Days 1 and 8PK: AUC0-24 of pirtobrutinib was reported.
PK: Area Under the Concentration-time Curve, From Time 0 to the Last Measurable Concentration (AUC0-t) of PirtobrutinibPre-dose 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 post-dose on Days 1 and 8PK: AUC0-t of pirtobrutinib was reported.
PK: Area Under the Concentration-time Curve From Time 0 Extrapolated to Infinity (AUC0-inf) of PirtobrutinibPre-dose 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 post-dose on Days 1 and 8PK: AUC0-inf of pirtobrutinib was reported.
PK: Percentage Extrapolation for AUC0-inf (%AUCextrap) of PirtobrutinibPre-dose 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 post-dose on Days 1 and 8PK: %AUCextrap of pirtobrutinib was reported.
PK: Apparent Systemic Clearance (CL/F) of PirtobrutinibPre-dose 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 post-dose on Days 1 and 8PK: CL/F of pirtobrutinib was reported.
PK: Apparent Plasma Terminal Elimination Half-life (t½) of PirtobrutinibPre-dose 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 post-dose on Days 1 and 8PK: t½ of pirtobrutinib was reported.
PK: Maximum Observed Concentration (Cmax) of PirtobrutinibPre-dose 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 post-dose on Days 1 and 8PK: Cmax of pirtobrutinib was reported.
PK: Time to Maximum Observed Plasma Concentration (Tmax) of PirtobrutinibPre-dose 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 post-dose on Days 1 and 8PK: Tmax of pirtobrutinib was reported.
PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibPre-dose 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 post-dose on Days 1 and 8PK: Lambda Z of pirtobrutinib was reported.
PK: Apparent Volume of Distribution at the Terminal Phase (Vz/F) of PirtobrutinibPre-dose 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 post-dose on Days 1 and 8PK: Vz/F of pirtobrutinib was reported

Countries

United States

Participant flow

Participants by arm

ArmCount
200 mg Pirtobrutinib: Treatment AB
Participants received a single oral dose of 200 mg of pirtobrutinib administered in the morning on Day 1, under fasted conditions (Treatment A) followed by 200 mg pirtobrutinib administered orally in the morning on Day 8, under fed condition (Treatment B). A washout period of 7 days was maintained between Treatments A and B.
10
200 mg Pirtobrutinib: Treatment BA
Participants received a single oral dose of 200 mg pirtobrutinib administered in the morning on Day 1, under fed conditions (Treatment B) followed by 200 mg of pirtobrutinib administered orally in the morning on Day 8, under fasted conditions (Treatment A). A washout period of 7 days was maintained between Treatments A and B.
10
Total20

Baseline characteristics

Characteristic200 mg Pirtobrutinib: Treatment ABTotal200 mg Pirtobrutinib: Treatment BA
Age, Continuous35.9 years
STANDARD_DEVIATION 10.1
35.9 years
STANDARD_DEVIATION 10.33
35.9 years
STANDARD_DEVIATION 11.1
Ethnicity (NIH/OMB)
Hispanic or Latino
6 Participants13 Participants7 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
4 Participants7 Participants3 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
1 Participants1 Participants0 Participants
Race (NIH/OMB)
Black or African American
3 Participants5 Participants2 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 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
10 Participants20 Participants10 Participants
Sex: Female, Male
Female
2 Participants4 Participants2 Participants
Sex: Female, Male
Male
8 Participants16 Participants8 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 200 / 20
other
Total, other adverse events
2 / 202 / 20
serious
Total, serious adverse events
0 / 200 / 20

Outcome results

Primary

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

PK: AUC0-24 of pirtobrutinib was reported.

Time frame: Pre-dose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, and 24 hours post-dose on Days 1 and 8

Population: The PK Population was consisted of all participants who had received 1 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 (Fasted)Pharmacokinetics (PK): Area Under the Concentration-time Curve, From Time 0 to 24 Hours Post-dose (AUC0-24) of Pirtobrutinib51700 hour nanogram per milliliter (h*ng/mL)Geometric Coefficient of Variation 18.7
200 mg Pirtobrutinib (Fed)Pharmacokinetics (PK): Area Under the Concentration-time Curve, From Time 0 to 24 Hours Post-dose (AUC0-24) of Pirtobrutinib45500 hour nanogram per milliliter (h*ng/mL)Geometric Coefficient of Variation 42
Primary

PK: Apparent Plasma Terminal Elimination Half-life (t½) of Pirtobrutinib

PK: t½ of pirtobrutinib was reported.

Time frame: Pre-dose 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 post-dose on Days 1 and 8

Population: The PK Population was consisted of all participants who had received 1 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 (Fasted)PK: Apparent Plasma Terminal Elimination Half-life (t½) of Pirtobrutinib18.4 hourGeometric Coefficient of Variation 22.2
200 mg Pirtobrutinib (Fed)PK: Apparent Plasma Terminal Elimination Half-life (t½) of Pirtobrutinib19.2 hourGeometric Coefficient of Variation 25.4
Primary

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

PK: CL/F of pirtobrutinib was reported.

Time frame: Pre-dose 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 post-dose on Days 1 and 8

Population: The PK Population was consisted of all participants who had received 1 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 (Fasted)PK: Apparent Systemic Clearance (CL/F) of Pirtobrutinib2.35 liter per hour (L/h)Geometric Coefficient of Variation 25
200 mg Pirtobrutinib (Fed)PK: Apparent Systemic Clearance (CL/F) of Pirtobrutinib2.53 liter per hour (L/h)Geometric Coefficient of Variation 48.3
Primary

PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of Pirtobrutinib

PK: Lambda Z of pirtobrutinib was reported.

Time frame: Pre-dose 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 post-dose on Days 1 and 8

Population: The PK Population was consisted of all participants who had received 1 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 (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 190.0408 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 10.0199 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 20.0355 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 30.0308 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 40.0457 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 50.0473 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 60.0333 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 70.0394 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 80.0427 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 90.0404 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 100.0315 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 110.0554 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 120.0302 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 130.0331 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 140.0362 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 150.0382 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 160.0466 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 170.0392 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 180.0432 1/hour (1/h)
200 mg Pirtobrutinib (Fasted)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 200.0408 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 170.0440 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 190.0397 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 100.0365 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 10.0155 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 150.0396 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 20.0363 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 110.0513 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 30.0303 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 200.0360 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 40.0436 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 120.0344 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 50.0352 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 160.0381 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 60.0307 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 130.0265 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 70.0381 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 180.0418 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 80.0459 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 140.0383 1/hour (1/h)
200 mg Pirtobrutinib (Fed)PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of PirtobrutinibSubject 90.0395 1/hour (1/h)
Primary

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

PK: Vz/F of pirtobrutinib was reported

Time frame: Pre-dose 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 post-dose on Days 1 and 8

Population: The PK Population was consisted of all participants who had received 1 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 (Fasted)PK: Apparent Volume of Distribution at the Terminal Phase (Vz/F) of Pirtobrutinib62.5 literGeometric Coefficient of Variation 21.2
200 mg Pirtobrutinib (Fed)PK: Apparent Volume of Distribution at the Terminal Phase (Vz/F) of Pirtobrutinib70.1 literGeometric Coefficient of Variation 43.4
Primary

PK: Area Under the Concentration-time Curve From Time 0 Extrapolated to Infinity (AUC0-inf) of Pirtobrutinib

PK: AUC0-inf of pirtobrutinib was reported.

Time frame: Pre-dose 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 post-dose on Days 1 and 8

Population: The PK Population was consisted of all participants who had received 1 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 (Fasted)PK: Area Under the Concentration-time Curve From Time 0 Extrapolated to Infinity (AUC0-inf) of Pirtobrutinib85100 h*ng/mLGeometric Coefficient of Variation 25
200 mg Pirtobrutinib (Fed)PK: Area Under the Concentration-time Curve From Time 0 Extrapolated to Infinity (AUC0-inf) of Pirtobrutinib79000 h*ng/mLGeometric Coefficient of Variation 48.3
Primary

PK: Area Under the Concentration-time Curve, From Time 0 to the Last Measurable Concentration (AUC0-t) of Pirtobrutinib

PK: AUC0-t of pirtobrutinib was reported.

Time frame: Pre-dose 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 post-dose on Days 1 and 8

Population: The PK Population was consisted of all participants who had received 1 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 (Fasted)PK: Area Under the Concentration-time Curve, From Time 0 to the Last Measurable Concentration (AUC0-t) of Pirtobrutinib83900 h*ng/mLGeometric Coefficient of Variation 25.1
200 mg Pirtobrutinib (Fed)PK: Area Under the Concentration-time Curve, From Time 0 to the Last Measurable Concentration (AUC0-t) of Pirtobrutinib77800 h*ng/mLGeometric Coefficient of Variation 48.9
Primary

PK: Maximum Observed Concentration (Cmax) of Pirtobrutinib

PK: Cmax of pirtobrutinib was reported.

Time frame: Pre-dose 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 post-dose on Days 1 and 8

Population: The PK Population was consisted of all participants who had received 1 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 (Fasted)PK: Maximum Observed Concentration (Cmax) of Pirtobrutinib4200 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 18.6
200 mg Pirtobrutinib (Fed)PK: Maximum Observed Concentration (Cmax) of Pirtobrutinib3250 nanogram per milliliter (ng/mL)Geometric Coefficient of Variation 35.9
Primary

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

PK: %AUCextrap of pirtobrutinib was reported.

Time frame: Pre-dose 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 post-dose on Days 1 and 8

Population: The PK Population was consisted of all participants who had received 1 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 (Fasted)PK: Percentage Extrapolation for AUC0-inf (%AUCextrap) of Pirtobrutinib1.21 percentage of AUCextrapGeometric Coefficient of Variation 43.7
200 mg Pirtobrutinib (Fed)PK: Percentage Extrapolation for AUC0-inf (%AUCextrap) of Pirtobrutinib1.25 percentage of AUCextrapGeometric Coefficient of Variation 65.1
Primary

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

PK: Tmax of pirtobrutinib was reported.

Time frame: Pre-dose 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 post-dose on Days 1 and 8

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

ArmMeasureValue (MEDIAN)
200 mg Pirtobrutinib (Fasted)PK: Time to Maximum Observed Plasma Concentration (Tmax) of Pirtobrutinib3.00 hour
200 mg Pirtobrutinib (Fed)PK: Time to Maximum Observed Plasma Concentration (Tmax) of Pirtobrutinib4.00 hour

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