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Completed

NCT Number: NCT06165146

A Study of the Effects of Pirtobrutinib (LOXO-305) on Repaglinide (CYP2C8 Substrate) in Healthy Participants

The main purpose of this study is to evaluate the effect of pirtobrutinib (LOXO-305) on single oral dose of repaglinide (CYP2C8 substrate) when administered as multiple doses by conducting the blood tests to measure how much pirtobrutinib (LOXO-305) is in the bloodstream and how the body handles and eliminates pirtobrutinib (LOXO-305) in adult healthy participants. The study will also evaluate the safety and tolerability of pirtobrutinib (LOXO-305). The study is conducted in two periods. Participants will stay in this study for up to 54 days.

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Key information

Conditions

Healthy

Age range

18 year–55 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

Covance Clinical Research Unit

Daytona Beach, Florida, 32117, United States

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Must have Body mass index (BMI) within the range of 18.0 to 32.0 kilograms per square meter (kg/m²), 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 16-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
  • 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)

Treatment and study plan

repaglinide

Drug

Administered orally.

Pirtobrutinib

Drug

Administered orally.

Other names: LOXO-305, LY3527727

Primary outcomes

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

    Time frame: Period 1, Day 1 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose); Period 2, Day 12 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose)

    PK: AUC(0-t) of repaglinide was reported.

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

    Time frame: Period 1, Day 1 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose); Period 2, Day 12 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose)

    PK: AUC(0-inf) of repaglinide was reported.

  3. PK: Percentage of AUC0-inf Extrapolated (AUC%Extrap) of Repaglinide

    Time frame: Period 1, Day 1 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose); Period 2, Day 12 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose)

    PK: AUC-inf (%extrap) of repaglinide was reported.

  4. PK: Maximum Observed Concentration (Cmax) of Repaglinide

    Time frame: Period 1, Day 1 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose); Period 2, Day 12 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose)

    PK: Cmax of repaglinide was reported.

  5. PK: Time to Reach Maximum Observed Plasma Concentration (Tmax) of Repaglinide

    Time frame: Period 1, Day 1 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose); Period 2, Day 12 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose)

    PK: Tmax of repaglinide was reported.

  6. PK: Apparent Terminal Elimination Rate Constant (Lambda Z) of Repaglinide

    Time frame: Period 1, Day 1 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose); Period 2, Day 12 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose)

    PK: Lambda Z of repaglinide was reported.

  7. PK: Apparent Systemic Clearance (CL/F) of Repaglinide

    Time frame: Period 1, Day 1 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose); Period 2, Day 12 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose)

    PK: CL/F of repaglinide was reported.

  8. PK: Apparent Plasma Terminal Elimination Half-life (t½) of Repaglinide

    Time frame: Period 1, Day 1 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose); Period 2, Day 12 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose)

    PK: t½ of repaglinide was reported.

  9. PK: Apparent Volume of Distribution (Vz/F) of Repaglinide

    Time frame: Period 1, Day 1 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose); Period 2, Day 12 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16 and 24 hours post-dose)

    PK: Vz/F of repaglinide was reported.

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

    Time frame: Period 2, Day 12 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24, 42, 78 and 100 hours post-dose)

    PK: AUC0-t of pirtobrutinib was reported.

  11. PK: Area Under the Concentration-time Curve During a Dosing Interval (AUCtau) of Pirtobrutinib

    Time frame: Period 2, Day 12 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24, 42, 78 and 100 hours post-dose)

    PK: AUCtau of pirtobrutinib was reported.

  12. PK: Maximum Observed Concentration (Cmax) of Pirtobrutinib

    Time frame: Period 2, Day 12 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24, 42, 78 and 100 hours post-dose)

    PK: Cmax of pirtobrutinib was reported.

  13. PK: Concentration Observed at the End of the Dosing Interval (Ctrough) of Pirtobrutinib

    Time frame: Period 2: 24-hour post-dose on Day 12

    PK: Ctrough of pirtobrutinib was reported.

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

    Time frame: Period 2, Day 12 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24, 42, 78 and 100 hours post-dose)

    PK: Tmax of pirtobrutinib was reported.

  15. PK: Apparent Systemic Clearance (CL/F) at Steady State of Pirtobrutinib

    Time frame: Period 2, Day 12 (Pre-dose, 0.17, 0.33, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 24, 42, 78 and 100 hours post-dose)

    PK: CL/F at steady state of pirtobrutinib was reported.

Sponsors and collaborators

Lead sponsor

Eli Lilly and Company

Industry

Collaborators

  • Loxo Oncology, Inc.

Registry information

Official study title

A Phase I, Open-label, Fixed-sequence, Drug Interaction Study to Investigate the Effect of Multiple Oral Doses of Pirtobrutinib (LOXO-305) on the Pharmacokinetics of Repaglinide (CYP2C8 Substrate) in Healthy Subjects

Important dates

Study start
2020
Primary completion
2020
Study completion
2020
First posted
Dec 11, 2023
Registry last updated
Mar 17, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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