A Study of Effects of Itraconazole and Rifampin on Selpercatinib (LY3527723) in Healthy Participants

Phase 1

Completed

• Conditions: Healthy
• Interventions: Drug: Selpercatinib; Drug: Itraconazole; Drug: Rifampin

• Registration Number: NCT05338489
• Lead Sponsor: Eli Lilly and Company

Brief Summary

The main purpose of this study is to assess the effect of itraconazole and rifampin on how fast selpercatinib gets into the blood stream and how long it takes the body to remove it when administered in healthy participants. Information about safety and tolerability will be collected. The study is conducted in two parts and it will last up to 54 days (part 1) and 59 days (part 2), respectively, inclusive of screening period.

Detailed Description

Not available

Study Timeline

• Study Start: 2018-05-11
• Primary Completion: 2018-07-28
• Study Completion: 2018-08-22
• Study First Submitted: 2022-04-19
• Study First Submitted QC: 2022-04-19
• Study First Posted: 2022-04-21
• Status Verified: 2025-08
• Results First Submitted: 2025-08-29
• Results First Submitted QC: 2025-08-29
• Last Update Submitted: 2025-08-29
• Results First Posted: 2025-09-19
• Last Update Posted: 2025-09-19

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 24

Inclusion Criteria

• Female participants of non-childbearing potential who are agreeable to take birth control measures until study completion
• Body mass index (BMI) ≥ 18.0 and ≤ 32.0 kilograms per meter squared (kg/m²) and had a minimum weight of at least 50 kg at screening
• Have normal blood pressure, pulse rate, electrocardiogram (ECG), and blood and urine laboratory test results that are acceptable for the study

Exclusion Criteria

• Are currently participating in or completed a clinical trial within the last 30 days or any other type of medical research judged to be incompatible with this study
• Have previously participated or withdrawn from this study
• Have or used to have health problems or laboratory test results or ECG readings that, in the opinion of the doctor, could make it unsafe to participate, or could interfere with understanding the results of the study
• Had blood loss of more than 500 milliliters (mL) within the previous 30 days of study screening
• Require treatment with inducers or inhibitors of cytochrome P450 (CYP) CYP3A within 14 days before the first dose of study drug through the end of Period 2

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SEQUENTIAL

Arm && Interventions

Group	Intervention	Description
Part 1 - 160 mg Selpercatinib + 200 mg Itraconazole	Selpercatinib	Participants received a single oral dose of 160 milligrams (mg) selpercatinib on Day 1 of Period 1. In Period 2, participants received an oral dose of 200 mg itraconazole administered once daily (QD) for 11 consecutive days (Days -4 to 7) with a single oral dose of 160 mg selpercatinib co-administered on Day 1 of Period 2. There was a washout period of at least 7 days between the dose of selpercatinib in Period 1 and the first dose of itraconazole in Period 2.
Part 1 - 160 mg Selpercatinib + 200 mg Itraconazole	Itraconazole	Participants received a single oral dose of 160 milligrams (mg) selpercatinib on Day 1 of Period 1. In Period 2, participants received an oral dose of 200 mg itraconazole administered once daily (QD) for 11 consecutive days (Days -4 to 7) with a single oral dose of 160 mg selpercatinib co-administered on Day 1 of Period 2. There was a washout period of at least 7 days between the dose of selpercatinib in Period 1 and the first dose of itraconazole in Period 2.
Part 2 - 160 mg Selpercatinib + 600 mg Rifampin	Selpercatinib	Participants received a single oral dose of 160 mg selpercatinib on Day 1 of Period 1. In Period 2, participants received an oral dose of 600 mg rifampin administered QD for 16 consecutive days (Days 1 to 16) with a single oral dose of 160 mg selpercatinib co-administered on Day 1 and Day 10 of Period 2. There was a washout period of at least 7 days between the dose of selpercatinib in Period 1 and the first dose of rifampin and selpercatinib in Period 2.
Part 2 - 160 mg Selpercatinib + 600 mg Rifampin	Rifampin	Participants received a single oral dose of 160 mg selpercatinib on Day 1 of Period 1. In Period 2, participants received an oral dose of 600 mg rifampin administered QD for 16 consecutive days (Days 1 to 16) with a single oral dose of 160 mg selpercatinib co-administered on Day 1 and Day 10 of Period 2. There was a washout period of at least 7 days between the dose of selpercatinib in Period 1 and the first dose of rifampin and selpercatinib in Period 2.

Primary Outcome Measures

Name	Time	Method
Pharmacokinetics (PK): Area Under the Concentration-time Curve, From Time 0 to the Last Observed Non-zero Concentration (AUC0-t) of Selpercatinib	(contd.) Part 2, Period 2: (Day 1) pre-dose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours post dose; (Day 10) 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, 168 hours post dose.	PK: AUC0-t of Selpercatinib was reported.; Outcome measure timeframe: Parts 1 and 2, Period 1: (Day 1) 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, 168 hours post dose.; Part 1, Period 2; (Day 1) 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, 168 hours post dose. (contd.)
PK: Area Under the Concentration-time Curve From Time 0 Extrapolated to Infinity (AUC0-inf) of Selpercatinib	(contd.) Part 2, Period 2: (Day 1) pre-dose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours post dose; (Day 10) 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, 168 hours post dose.	PK: AUC0-inf of Selpercatinib was reported.; Outcome measure timeframe: Parts 1 and 2, Period 1: (Day 1) 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, 168 hours post dose.; Part 1, Period 2; (Day 1) 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, 168 hours post dose. (contd.)
PK: Percentage of AUC0-inf Extrapolated (AUC%Extrap) of Selpercatinib	(contd.) Part 2, Period 2: (Day 1) pre-dose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours post dose; (Day 10) 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, 168 hours post dose.	PK: AUC%extrap of Selpercatinib was reported.; Outcome measure timeframe: Parts 1 and 2, Period 1: (Day 1) 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, 168 hours post dose.; Part 1, Period 2; (Day 1) 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, 168 hours post dose. (contd.)
PK: Maximum Observed Concentration (Cmax) of Selpercatinib	(contd.) Part 2, Period 2: (Day 1) pre-dose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours post dose; (Day 10) 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, 168 hours post dose.	PK: Maximum observed concentration (Cmax) of Selpercatinib was reported.; Outcome measure timeframe: Parts 1 and 2, Period 1: (Day 1) 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, 168 hours post dose.; Part 1, Period 2; (Day 1) 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, 168 hours post dose.
PK: Apparent First-order Terminal Elimination Rate Constant (Kel) of Selpercatinib	(contd.) Part 2, Period 2: (Day 1) pre-dose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours post dose; (Day 10) 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, 168 hours post dose.	PK: Kel of Selpercatinib was reported.; Outcome measure timeframe: Parts 1 and 2, Period 1: (Day 1) 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, 168 hours post dose.; Part 1, Period 2; (Day 1) 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, 168 hours post dose. (contd.)
PK: Apparent Total Plasma Clearance After Oral (Extravascular) Administration (CL/F) of Selpercatinib	(contd.) Part 2, Period 2: (Day 1) pre-dose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours post dose; (Day 10) 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, 168 hours post dose.	PK: CL/F of Selpercatinib was reported.; Outcome measure timeframe: Parts 1 and 2, Period 1: (Day 1) 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, 168 hours post dose.; Part 1, Period 2; (Day 1) 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, 168 hours post dose. (contd.)
PK: Apparent First-order Terminal Elimination Half-life (t½) of Selpercatinib	(contd.) Part 2, Period 2: (Day 1) pre-dose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours post dose; (Day 10) 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, 168 hours post dose.	PK: t½ of Selpercatinib was reported.; Outcome measure timeframe: Parts 1 and 2, Period 1: (Day 1) 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, 168 hours post dose.; Part 1, Period 2; (Day 1) 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, 168 hours post dose. (contd.)
Part 2 - PK: Area Under the Concentration-Time Curve From Time 0 to 24 Hours (AUC0-24) of Selpercatinib Post Dose Day 1	Part 2, Periods 1 and 2: (Day 1) pre-dose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours post dose.	PK: AUC0-24 of Selpercatinib in Part 2 was reported.
PK: Time to Reach Cmax (Tmax) of Selpercatinib	(contd.) Part 2, Period 2: (Day 1) pre-dose, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 24 hours post dose; (Day 10) 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, 168 hours post dose.	PK: Tmax of Selpercatinib was reported.; Outcome measure timeframe: Parts 1 and 2, Period 1: (Day 1) 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, 168 hours post dose.; Part 1, Period 2; (Day 1) 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, 168 hours post dose. (contd.)

Trial Locations

Locations (1)

Celerion; 🇺🇸 Tempe, Arizona, United States