Drug-drug Interaction Study of Ganaplacide and Lumefantrine With Itraconazole

A Phase I, Open-label, Fixed Sequence, Two-period, Crossover, Drug-drug Interaction Study to Investigate the Interaction Potential of Itraconazole on the Pharmacokinetics of Ganaplacide and Lumefantrine Combination in Healthy Participants

The study will assess the effect of multiple doses of itraconazole, a strong CYP3A4/5 inhibitor, on the PK of ganaplacide and lumefantrine in healthy participants. This study will provide data that is relevant for advice regarding possible concomitant medications that are inhibitors of CYP3A4/5 in future clinical studies with ganaplacide and lumefantrine and for potential future labeling considerations

Study Overview

• Status: Completed
• Conditions: Malaria
• Intervention / Treatment: Drug: Ganaplacide; Combination product: Lumefantrine; Drug: Itraconazole

Detailed Description

This is an open-label, fixed sequence, 2-period, crossover, drug-drug interaction (DDI) study, to evaluate the effect of multiple doses of itraconazole on the single dose PK of ganaplacide and lumefantrine in healthy participants.

The study will consist of a screening period of up to 28 days, 2 Baseline evaluations (on Day -1 of each treatment period), and 2 treatment periods which are separated by a washout period. Participants who meet the eligibility criteria at Screening will be admitted to the study site for First Baseline evaluations on Day -1 of Period 1. Baseline safety assessments will be performed prior to first dosing of study treatment in each period.

Participants enrolled will receive a single oral dose of ganaplacide and lumefantrine combination on Day 1 of Period 1. In Period 2, participants will receive itraconazole once daily (q.d.) on Days 1 to 18 and a single dose of ganaplacide and lumefantrine combination on Day 5, approximately 2 hours after the itraconazole dose. There will be 336 hours of sequential blood sampling for PK assessment starting after ganaplacide and lumefantrine dosing in each treatment period. Between the 2 treatment periods, there will be an additional washout period of at least 14 days, beginning from the last PK sample collection in Period 1 and continuing until the first dose of study treatment in Period 2.

Each dose of ganaplacide and lumefantrine combination will be administered after at least 10 hours of overnight fasting and will be followed by at least 4 hours of fasting post dose. In Period 2, itraconazole will be administered after at least 10 hours of overnight fasting and followed by at least 1 hour of fasting post dose (except on Day 5 when ganaplacide and lumefantrine will be administered approximately 2 hours after itraconazole dosing and participants will continue fasting for at least 4 hours post ganaplacide and lumefantrine dosing).

Safety assessments (including physical examinations, electrocardiograms (ECGs), vital signs, clinical laboratory evaluations [hematology, chemistry, coagulation, and urinalysis], and adverse event [AE] and serious adverse event [SAE] monitoring) will be performed during the study.

The Study Completion evaluations will occur on Day 19 of Period 2, followed by a post study safety contact (e.g. follow-up telephone call, email) approximately 30 days after the last dose of study treatment. In the case of early termination, Study Completion evaluations will be conducted prior to discharge from the study.

• Study Type: Interventional
• Enrollment (Actual): 19
• Phase: Phase 1

Contacts and Locations

Study Locations

• United Kingdom
  • Northern Ireland
    • Belfast, Northern Ireland, United Kingdom, BT9 6AD
      • Novartis Investigative Site

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 55 years (ADULT)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Key Inclusion Criteria:

• Signed informed consent must be obtained prior to participation in the study.
• Healthy male and non-childbearing potential female participants 18 to 55 years of age inclusive, at Screening.
• In good health as determined by medical history, physical examination, vital signs, ECG, and clinical laboratory tests at Screening.
• Must weigh at least 50 kg with a body mass index (BMI) within the range of 18 to 29.9 kg/m2 inclusive, at Screening.

Key Exclusion Criteria:

• Use of other investigational drugs within 5 half-lives or 30 days prior to first dosing of study treatment, whichever is longer.
• Known family history or known presence of long QT syndrome.
• Known history or current clinically significant arrhythmias.
• History or presence of malignancy of any organ system (other than treated localized basal cell or squamous cell carcinoma of the skin or in situ cervical cancer), treated or untreated, within 5 years of Screening, regardless of whether there is evidence of local recurrence or metastases.
• History or presence of duodenal ulcer, ulcerative colitis, or Crohn's disease.
• Presence of active or uncontrolled thyroid disease.
• Has had cholecystectomy (gallbladder removed).

Other protocol-defined inclusion/exclusion criteria may apply.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: TREATMENT
• Allocation: NA
• Interventional Model: SEQUENTIAL
• Masking: NONE

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

EXPERIMENTAL: Group 1; Each participant will receive a single oral dose of ganaplacide and lumefantrine combination on Day 1 of Period 1. In Period 2, participants will receive itraconazole q.d. on Days 1 to 18 and a single dose of ganaplacide and lumefantrine combination on Day 5, approximately 2 hours after the itraconazole dose

Drug: Ganaplacide; Treatment A/Period 1: 400 mg (4 x 100 mg tablets) at Hour 0 on Day 1 Treatment B/Period 2: 400 mg (4 x 100 mg tablets) at Hour 0, approximately 2 hours after itraconazole dosing, on Day 5.; Other Names: KAF156; Combination product: Lumefantrine; Treatment A/Period 1: 480 mg (2 x 240 mg sachets) at Hour 0 on Day 1 Treatment B/Period 2: 480 mg (2 x 240 mg sachets) at Hour 0, approximately 2 hours after itraconazole dosing, on Day 5.; Other Names: LUM566; Drug: Itraconazole; 200 mg (20 mL of 10 mg/mL oral solution) q.d. on Days 1 to 18

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Observed maximum plasma concentration (Cmax) for Ganaplacide and Lumefantrine	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. Cmax will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)
Area under the serum concentration-time curve from time zero to the time of last quantifiable concentration (AUClast) for Ganaplacide and Lumefantrine	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. AUClast will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)
Area under the concentration-time curve from time zero (pre-dose) extrapolated to infinite time (AUCinf) for Ganaplacide and Lumefantrine	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. AUCinf will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)
Area under the concentration-time curve from time zero (pre-dose) to the 24-hour time point (AUC^0-24) for Ganaplacide and Lumefantrine	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. AUC^0-24 will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)
Time of maximum observed drug concentration occurrence (Tmax) for Ganaplacide and Lumefantrine	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. Tmax will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)
Apparent total body clearance of drug from plasma following extravascular administration (CL/F) for Ganaplacide and Lumefantrine	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. CL/F will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)
Apparent volume of distribution during terminal elimination phase following extravascular administration (Vz/F) for Ganaplacide and Lumefantrine	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. Vz/F will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)
Terminal elimination half-life (T^1/2) for Ganaplacide and Lumefantrine	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. T^1/2 will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Observed maximum plasma concentration (Cmax) for Ganaplacide metabolites (RHF218 and GOU089)	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. Cmax will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)
Area under the serum concentration-time curve from time zero to the time of last quantifiable concentration (AUClast) for Ganaplacide metabolites (RHF218 and GOU089)	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. AUClast will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)
Area under the concentration-time curve from time zero (pre-dose) extrapolated to infinite time (AUCinf) for Ganaplacide metabolites (RHF218 and GOU089)	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. AUCinf will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)
Area under the concentration-time curve from time zero (pre-dose) to the 24-hour time point (AUC0-24) for Ganaplacide metabolites (RHF218 and GOU089)	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. AUC^0-24 will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)
Time of maximum observed drug concentration occurrence (Tmax) for Ganaplacide metabolites (RHF218 and GOU089)	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. Tmax will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)
Terminal elimination half-life (T^1/2) for Ganaplacide metabolites (RHF218 and GOU089)	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. T^1/2 will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)
Metabolite to Parent Ratio (MR) for Ganaplacide metabolites (RHF218 and GOU089)	Venous whole blood samples will be collected for activity-based pharmacokinetics characterization. MR will be listed and summarized using descriptive statistics.	0 (pre-dose), 0.5, 1, 3, 6, 8, 12, 24, 48, 72, 96, 120, 144, 168, 240, and 336 hours (post dose)

Collaborators and Investigators

• Sponsor: Novartis Pharmaceuticals
• Collaborators: Medicines for Malaria Venture

Study record dates

Study Major Dates

• Study Start (ACTUAL): November 18, 2021
• Primary Completion (ACTUAL): May 13, 2022
• Study Completion (ACTUAL): May 14, 2022

Study Registration Dates

• First Submitted: October 6, 2021
• First Submitted That Met QC Criteria: October 6, 2021
• First Posted (ACTUAL): October 20, 2021

Study Record Updates

• Last Update Posted (ACTUAL): October 28, 2022
• Last Update Submitted That Met QC Criteria: October 27, 2022
• Last Verified: October 1, 2022

More Information

Terms related to this study

• Keywords: PK; Pharmacokinetic; lumefantrine; Cytochrome P450; safety and tolerability; CYP; Drug-drug interaction; DDI; itraconazole; healthy participants; ganaplacide
• Additional Relevant MeSH Terms: Infections; Vector Borne Diseases; Parasitic Diseases; Protozoan Infections; Malaria; Physiological Effects of Drugs; Molecular Mechanisms of Pharmacological Action; Anti-Infective Agents; Enzyme Inhibitors; Hormones, Hormone Substitutes, and Hormone Antagonists; Cytochrome P-450 CYP3A Inhibitors; Cytochrome P-450 Enzyme Inhibitors; Hormone Antagonists; Antifungal Agents; Steroid Synthesis Inhibitors; Antiprotozoal Agents; Antiparasitic Agents; Antimalarials; 14-alpha Demethylase Inhibitors; Itraconazole; Lumefantrine
• Other Study ID Numbers: CKAF156A2105; 2021-000924-36 (EUDRACT_NUMBER)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No