Study in Healthy Volunteers to Investigate the Effects of Ketoconazole on the Pharmacokinetics of NKTR-118

An Open-label, 1-sequence, 3-period, 3-treatment, Crossover Study to Assess the Effects of Ketoconazole on the Pharmacokinetics of NKTR-118 in Healthy Subjects

Study in healthy volunteers to investigate the effects of Ketoconazole on the Pharmacokinetics of NKTR-118

Study Overview

• Status: Completed
• Conditions: Healthy Volunteers; Bioavailability; Drug- Drug Interactions
• Intervention / Treatment: Drug: NKTR-118; Drug: Ketoconazole

Detailed Description

An Open-label, 1-sequence, 3-period, 3-treatment, Crossover Study to Assess the Effects of Ketoconazole on the Pharmacokinetics of NKTR-118 in Healthy Subjects

• Study Type: Interventional
• Enrollment (Actual): 22
• Phase: Phase 1

Contacts and Locations

Study Locations

• United States
  • Kansas
    • Overland Park, Kansas, United States
      • Research 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

Inclusion Criteria:

• Provision of signed and dated, written informed consent prior to any study specific procedures.
• Male and female (nonchildbearing potential, nonlactating)healthy volunteers aged 18 to 55 years inclusive, with suitable veins for cannulation or repeated venipuncture.
• Female volunteers must have a negative pregnancy test at screening and at admission, must not be lactating, and must be of nonchildbearing potential.
• Male volunteers should be willing to use barrier contraception ie, condoms, from the first day of dosing until 3 months after dosing with the IP. The female partner should use contraception during this period.
• Volunteers must have a BMI between 18 and 30 kg/m2, inclusive, and weigh at least 50 kg.

Exclusion Criteria:

• Any clinically significant disease or disorder (eg, cardiovascular, pulmonary, gastrointestinal, liver, renal, neurological, musculoskeletal, endocrine, metabolic, malignant, psychiatric, or major physical impairment), as judged by the Investigator.
• Any clinically significant illness, medical/surgical procedure or trauma within 4 weeks of the first administration of IP.
• Any clinically significant abnormalities in clinical chemistry, hematology, or urinalysis results as judged by the Investigator.
• Significant orthostatic reaction at enrollment as judged by the Investigator.
• Abnormal vital signs, after 10 minutes supine rest as defined in protocol.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: Non-Randomized
• Interventional Model: Crossover Assignment
• Masking: None (Open Label)

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Part 1 - A; Single dose NKTR-118 25 mg on Day 1 only	Drug: NKTR-118; Oral 25 mg
Active Comparator: Part 1 - B; Ketoconazole 400 mg once daily on Days 4 to 8	Drug: Ketoconazole; Oral 400 mg
Active Comparator: Part 1- C; Ketoconazole 400 mg plus NKTR-118 25 mg on Day 7	Drug: NKTR-118; Oral 25 mg; Drug: Ketoconazole; Oral 400 mg

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Description of the pharmacokinetic(PK) profile for NKTR 118 after co administration of Ketaconazole in terms of maximum observed plasma concentration (Cmax), time to Cmax (tmax), apparent terminal half-life (t1/2?z).	Predose and at 0:15, 0:30, 1, 1:30, 2, 3, 4, 5, 6, 8, 10, 12, 16, 24, 36, 48, and 72 hours Day 1 and 7
Description of the PK profile for NKTR 118 in terms of apparent terminal rate constant (?z), area under the plasma concentration-time curve from time zero to the time of the last quantifiable concentration [AUC(0-t)].	Predose and at 0:15, 0:30, 1, 1:30, 2, 3, 4, 5, 6, 8, 10, 12, 16, 24, 36, 48, and 72 hours Day 1 and 7
Description of the PK profile for NKTR 118 in terms of area under the plasma concentration-time curve from time zero to 24 hours postdose [AUC(0 24)], area under the plasma concentration-time curve from time zero extrapolated to infinity (AUC	Predose and at 0:15, 0:30, 1, 1:30, 2, 3, 4, 5, 6, 8, 10, 12, 16, 24, 36, 48, and 72 hours Day 1 and 7
Description of the PK profile for NKTR 118 in terms of apparent oral clearance from plasma (CL/F), and apparent volume of distribution during the terminal phase (Vz/F)	Predose and at 0:15, 0:30, 1, 1:30, 2, 3, 4, 5, 6, 8, 10, 12, 16, 24, 36, 48, and 72 hours Day 1 and 7

Secondary Outcome Measures

Outcome Measure	Time Frame
Description of the safety profile in terms of adverse events, clinical laboratory assessments , vital signs (blood pressure and pulse rate), physical examinations, electrocardiograms, and Columbia-Suicide Severity Rating scale	From baseline day 1 through to Follow-u (Maximum 21 days)

Collaborators and Investigators

• Sponsor: AstraZeneca
• Investigators: Principal Investigator: David Matthews, MD, Quintiles, Inc Kansas Overland Park US.

Publications and helpful links

Helpful Links

• D3820C00012 Clinical Study Report Synopsis

Study record dates

Study Major Dates

• Study Start: February 1, 2012
• Primary Completion (Actual): April 1, 2012
• Study Completion (Actual): April 1, 2012

Study Registration Dates

• First Submitted: January 26, 2012
• First Submitted That Met QC Criteria: January 26, 2012
• First Posted (Estimate): January 30, 2012

Study Record Updates

• Last Update Posted (Estimate): October 15, 2014
• Last Update Submitted That Met QC Criteria: October 13, 2014
• Last Verified: October 1, 2014

More Information

Terms related to this study

• Keywords: Pharmacokinetics; Phase 1; Drug-drug interaction; NKTR-118; Healthy male and female volunteers
• Additional Relevant MeSH Terms: Physiological Effects of Drugs; Molecular Mechanisms of Pharmacological Action; Anti-Infective Agents; Peripheral Nervous System Agents; Enzyme Inhibitors; Sensory System Agents; Hormones, Hormone Substitutes, and Hormone Antagonists; Narcotic Antagonists; Cytochrome P-450 CYP3A Inhibitors; Cytochrome P-450 Enzyme Inhibitors; Hormone Antagonists; Antifungal Agents; Steroid Synthesis Inhibitors; 14-alpha Demethylase Inhibitors; Ketoconazole; Naloxegol
• Other Study ID Numbers: D3820C00012