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NCT06181006

A Study to Evaluate Pirtobrutinib (LOXO-305) in Healthy Adult Participants

Completed Phase 1 Results posted Last updated 14 January 2025
What this trial tests

Phase 1 trial testing Pirtobrutinib in Healthy in 24 participants. Completed in 1 December 2020.

Timeline
14 August 2020
Primary endpoint
1 December 2020
1 December 2020

Quick facts

Lead sponsorEli Lilly and Company
PhasePhase 1
StatusCompleted
Study typeINTERVENTIONAL
Allocationnon randomized
Designparallel
Maskingnone
Primary purposebasic science
Enrollment24
Start date14 August 2020
Primary completion1 December 2020
Estimated completion1 December 2020
Sites1 location across United States

Drugs / interventions tested

Conditions studied

Sponsor

Eli Lilly and Company — full company profile →

Who can join

Adults 18 to 55, any sex, with Healthy. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Number of Participants With One or More Treatment Emergent Adverse Events (TEAEs) and Serious Adverse Event(s) (SAEs) Primary · Baseline up to 46 days

TEAE is defined as an adverse event (AE) which starts on or after the first administration of study drug. A serious adverse event is defined as any AE occurring at any dose that results in any of the following outcomes: death; a life-threatening adverse drug experience; inpatient hospitalization or prolongation of existing hospitalization; a persistent or significant disability/incapacity; a congenital anomaly/birth defect; an important medical event that may require medical or surgical intervention to prevent any of the above outcomes.

TEAEs
GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib1
Cohort 2: 600 mg Pirtobrutinib0
Cohort 3: 800 mg Pirtobrutinib0
Cohort 4: 900 mg Pirtobrutinib3
SAEs
GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib0
Cohort 2: 600 mg Pirtobrutinib0
Cohort 3: 800 mg Pirtobrutinib0
Cohort 4: 900 mg Pirtobrutinib0
Pharmacokinetics (PK): Area Under the Concentration Versus Time Curve From Time Zero to 24 Hours Post-dose (AUC0-24) of Pirtobrutinib Secondary · Day 1 (predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 7, 9, 12, 24 hours post-dose)

PK: AUC0-24 of Pirtobrutinib.

GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib84100± 27.2
Cohort 2: 600 mg Pirtobrutinib135000± 81.8
Cohort 3: 800 mg Pirtobrutinib200000± 22.6
Cohort 4: 900 mg Pirtobrutinib225000± 22.3
PK: Area Under the Concentration Versus Time Curve From Hour Zero to the Last Measurable Concentration (AUC0-t) of Pirtobrutinib Secondary · Day 1 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 7, 9, 12, 24, 48, 72, 96, 120, 144, and 168 hours post-dose)

PK: AUC0-t of Pirtobrutinib.

GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib143000± 29.8
Cohort 2: 600 mg Pirtobrutinib259000± 101
Cohort 3: 800 mg Pirtobrutinib379000± 16.9
Cohort 4: 900 mg Pirtobrutinib490000± 26.8
PK: Area Under the Concentration Versus Time Curve From Time Zero to Infinity (AUC0-inf) of Pirtobrutinib Secondary · Day 1 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 7, 9, 12, 24, 48, 72, 96, 120, 144, and 168 hours post-dose)

PK: AUC0-inf of Pirtobrutinib.

GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib144000± 30.1
Cohort 2: 600 mg Pirtobrutinib260000± 100
Cohort 3: 800 mg Pirtobrutinib382000± 16.9
Cohort 4: 900 mg Pirtobrutinib492000± 26.9
PK: Percentage Extrapolation for AUC0-inf (%AUCextrap) of Pirtobrutinib Secondary · Day 1 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 7, 9, 12, 24, 48, 72, 96, 120, 144, and 168 hours post-dose)

PK: %AUCextrap of pirtobrutinib.

GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib0.869± 39.9
Cohort 2: 600 mg Pirtobrutinib0.504± 61.2
Cohort 3: 800 mg Pirtobrutinib0.474± 113
Cohort 4: 900 mg Pirtobrutinib0.458± 48.1
PK: Maximum Observed Plasma Concentration (Cmax) of Pirtobrutinib Secondary · Day 1 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 7, 9, 12, 24, 48, 72, 96, 120, 144, and 168 hours post-dose)

PK: Cmax of Pirtobrutinib.

GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib6600± 28.7
Cohort 2: 600 mg Pirtobrutinib9050± 65.9
Cohort 3: 800 mg Pirtobrutinib13700± 32.8
Cohort 4: 900 mg Pirtobrutinib13000± 27.1
PK: Time to Maximum Observed Plasma Concentration (Tmax) of Pirtobrutinib Secondary · Day 1 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 7, 9, 12, 24, 48, 72, 96, 120, 144, and 168 hours post-dose)

PK: Tmax of Pirtobrutinib.

GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib3.251.50 – 7.00
Cohort 2: 600 mg Pirtobrutinib2.752.00 – 4.00
Cohort 3: 800 mg Pirtobrutinib3.002.50 – 7.00
Cohort 4: 900 mg Pirtobrutinib4.012.50 – 9.00
PK: Apparent Terminal Elimination Rate Constant (λZ) of Pirtobrutinib (Cohort 1) Secondary · Day 1 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 7, 9, 12, 24, 48, 72, 96, 120, 144, and 168 hours post-dose)

PK: λZ of Pirtobrutinib.

Subject 1
GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib0.0367
Subject 2
GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib0.0423
Subject 3
GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib0.0242
Subject 4
GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib0.0477
Subject 5
GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib0.0285
Subject 6
GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib0.0469
PK: Apparent Terminal Elimination Rate Constant (λZ) of Pirtobrutinib (Cohort 2) Secondary · Day 1 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 7, 9, 12, 24, 48, 72, 96, 120, 144, and 168 hours post-dose)

PK: λZ of Pirtobrutinib.

Subject 1
GroupValue95% CI
Cohort 2: 600 mg Pirtobrutinib0.0322
Subject 2
GroupValue95% CI
Cohort 2: 600 mg Pirtobrutinib0.0317
Subject 3
GroupValue95% CI
Cohort 2: 600 mg Pirtobrutinib0.0381
Subject 4
GroupValue95% CI
Cohort 2: 600 mg Pirtobrutinib0.0327
Subject 5
GroupValue95% CI
Cohort 2: 600 mg Pirtobrutinib0.0353
Subject 6
GroupValue95% CI
Cohort 2: 600 mg Pirtobrutinib0.0368
PK: Apparent Terminal Elimination Rate Constant (λZ) of Pirtobrutinib (Cohort 3) Secondary · Day 1 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 7, 9, 12, 24, 48, 72, 96, 120, 144, and 168 hours post-dose)

PK: λZ of Pirtobrutinib.

Subject 1
GroupValue95% CI
Cohort 3: 800 mg Pirtobrutinib0.0279
Subject 2
GroupValue95% CI
Cohort 3: 800 mg Pirtobrutinib0.0263
Subject 3
GroupValue95% CI
Cohort 3: 800 mg Pirtobrutinib0.0339
Subject 4
GroupValue95% CI
Cohort 3: 800 mg Pirtobrutinib0.0339
Subject 5
GroupValue95% CI
Cohort 3: 800 mg Pirtobrutinib0.0295
Subject 6
GroupValue95% CI
Cohort 3: 800 mg Pirtobrutinib0.0410
PK: Apparent Terminal Elimination Rate Constant (λZ) of Pirtobrutinib (Cohort 4) Secondary · Day 1 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 7, 9, 12, 24, 48, 72, 96, 120, 144, and 168 hours post-dose)

PK: λZ of Pirtobrutinib.

Subject 1
GroupValue95% CI
Cohort 4: 900 mg Pirtobrutinib0.0291
Subject 2
GroupValue95% CI
Cohort 4: 900 mg Pirtobrutinib0.0367
Subject 3
GroupValue95% CI
Cohort 4: 900 mg Pirtobrutinib0.0330
Subject 4
GroupValue95% CI
Cohort 4: 900 mg Pirtobrutinib0.0313
Subject 5
GroupValue95% CI
Cohort 4: 900 mg Pirtobrutinib0.0320
Subject 6
GroupValue95% CI
Cohort 4: 900 mg Pirtobrutinib0.0396
PK: Apparent Systemic Clearance (CL/F) of Pirtobrutinib Secondary · Day 1 (Predose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 7, 9, 12, 24, 48, 72, 96, 120, 144, and 168 hours post-dose)

PK: CL/F of Pirtobrutinib.

GroupValue95% CI
Cohort 1: 300 mg Pirtobrutinib2.08± 30.1
Cohort 2: 600 mg Pirtobrutinib2.31± 100
Cohort 3: 800 mg Pirtobrutinib2.10± 16.9
Cohort 4: 900 mg Pirtobrutinib1.83± 26.9

Adverse events — posted to ClinicalTrials.gov

Time frame: Upto 46 days. Reporting threshold: 0%. Adverse-event reports describe events observed during the trial — not all are caused by the drug.

Cohort 1: 300 mg Pirtobrutinib
Serious: 0/6 (0%)
Deaths: 0/6
Cohort 2: 600 mg Pirtobrutinib
Serious: 0/6 (0%)
Deaths: 0/6
Cohort 3: 800 mg Pirtobrutinib
Serious: 0/6 (0%)
Deaths: 0/6
Cohort 4: 900 mg Pirtobrutinib
Serious: 0/6 (0%)
Deaths: 0/6
Other adverse events (2 terms — click to expand)

ReactionSystemCohort 1: 300 mg Pirtobrut…Cohort 2: 600 mg Pirtobrut…Cohort 3: 800 mg Pirtobrut…Cohort 4: 900 mg Pirtobrut…
HeadacheNervous system disorders
PetechiaeSkin and subcutaneous tissue disorders

Data from ClinicalTrials.gov NCT06181006 adverse events section.

Sponsor's own description

The main purpose of this study is to assess the safety and tolerability of pirtobrutinib and to look at the amount of the study drug, pirtobrutinib, that gets into the blood stream and how long it takes the body to get rid of it when given in healthy adult participants. For each participant, the total duration of the study will be 46 days, including screening.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.

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