A Randomized Study to Assess the Relative Bioavailability of New Formulations of GSK1265744 Long Acting Parental (LAP) in Healthy Adult Subjects

NCT01754116 | Completed Phase 1

• 1 other identifier: 116815
• Study Type: interventional
• Target: 43
• Locations: 1 country
• Sites: 1

Brief Summary

This is a single-center, randomized, open-label, 3 parallel treatment study in healthy adult subjects to assess the relative bioavailability of new formulations of GSK1265744 LAP 400 mg intra muscular compared to the current GSK1265744 LAP 400 mg nanomilled formulation. This study will evaluate LAP formulations of GSK1265744 with different particle sizes. Following a 14 day lead in period with oral GSK1265744, forty-five subjects will receive 400 mg of one of three GSK1265744 formulations which vary in particle size from 200 nm to 5 um by intramuscular injection. Samples for determination of GSK1265744 concentrations will be collected for 12 weeks post-injection. Safety will be evaluated by adverse event recording and laboratory values at frequent intervals throughout the trial. A subgroup of 12 subjects will receive a 3 mg dose of oral midazolam at baseline on Day-29 and then again on the last day of the oral GSK1265744 lead in period to evaluate the effect of GSK1265744 on CYP3A enzymes. The subjects will undergo follow-up evaluations for a minimum of 12 weeks.

Conditions

Infection, Human Immunodeficiency Virus

Keywords

healthy subjects; GSK1265744 LAP; integrase inhibitor; HIV-1 infection; long acting retroviral; relative bioavailability

Outcome Measures

Primary Outcomes (3)

• Plasma GSK1265744 area under the concentration-time curve for 12 weeks (AUC 0-wk12)

  To evaluate the relative bioavailability of two new formulations of GSK1265744 400 mg LAP given intramuscularly compared to the current formulation (200 nm particle size) the pharmacokinetic (PK) parameters will include AUC 0 - 12

  Treatment Period: Day 1 pre-dose and 4 hour (h) post dose, 48 h (Day 3), 96 h (Day 5), 144 h (Day 7), Week 2, Week 3, Week 4, Week 6, Week 8, Week 12

• Plasma GSK1265744 last observed quantifiable concentration at week 12 (Cwk12)

  To evaluate the relative bioavailability of two new formulations of GSK1265744 400 mg LAP given intramuscularly compared to the current formulation (200 nm particle size) the PK parameters will include Cwk12

  Week 12

• Plasma GSK1265744 maximum observed concentration (Cmax)

  To evaluate the relative bioavailability of two new formulations of GSK1265744 400 mg LAP given intramuscularly compared to the current formulation (200 nm particle size) the PK parameters will include the maximum observed concentration

  Treatment period: Day 1 (pre-dose) and 4 hour (h) post dose, 48 h (Day 3), 96 h (Day 5), 144 h (Day 7), Week 2, Week 3, Week 4, Week 6, Week 8, Week 12, Week 14 (follow-up)

Secondary Outcomes (22)

• Plasma GSK1265744 AUC(0-infinity) following the long acting parenteral (LAP) dosing

  Day 1 (pre-dose) and 4 hour (h) post dose, 48 h (Day 3), 96 h (Day 5), 144 h (Day 7), Week 2, Week 3, Week 4, Week 6, Week 8, Week12 and Week 14 (follow-up)

• Plasma GSK1265744 AUC(0-wk4) and AUC(0-wk8) following the LAP dosing

  Day 1 (pre-dose) and 4 hour (h) post dose, 48 h (Day 3), 96 h (Day 5), 144 h (Day 7), Week 2, Week 3, Week 4, Week 6, Week 8

• Plasma GSK1265744 Cwk4 and Cwk8 following the LAP dosing

  Week 4 and Week 8

• Plasma GSK1265744 terminal phase half-life (t½) and time of occurrence of Cmax (tmax) following the LAP dosing

  Day 1 (pre-dose) and 4 hour (h) post dose, 48 h (Day 3), 96 h (Day 5), 144 h (Day 7), Week 2, Week 3, Week 4, Week 6, Week 8, Week12 and Week 14 (Follow-up)

• Plasma GSK1265744 apparent clearance (CL/F) following oral dosing

  Day 1 (pre-dose) and 4 hour (h) post dose, 48 h (Day 3), 96 h (Day 5), 144 h (Day 7), Week 2, Week 3, Week 4, Week 6, Week 8, Week12 and Week 14 (Follow-up)

Study Arms (5)

Lead In Period GSK1265744 30 mg + midazolam 3mg

EXPERIMENTAL

During the lead-in period, a group of 12 subjects will receive a midazolam probe (on Day -29 and Day -14) to examine the potential of GSK265744 to inhibit or induce cytochrome P450 (CYP)3A activity. On Day -28, subjects will begin a 14 day oral dose of GSK265744 30 mg. to be taken once daily from Day-28 to Day -14. Subjects will begin a wash out period from Day -14 to Day -1 and be randomized to GSK1265744 LAP on Day 1

Drug: Midazolam 3 mg oral + GSK1265744 30mg oral

Lead in Period GSK1265744 30mg

EXPERIMENTAL

On Day -28, subjects will begin a 14 day oral dose lead-in period. Subjects will be dispensed a 14 day supply of 30mg oral GSK1265744 to be taken once daily from Day-28 to Day -15. Subjects will begin a wash out period from Day -14 to Day -1 and be randomized to GSK1265744 LAP on Day 1

Drug: GSK1265744 30 mg oral

Treatment A

EXPERIMENTAL

Approximately 15 subjects will be enrolled and randomized on Day 1 to receive a single dose of 400 mg GSK1265744 (Nanomilled 200 nm) LAP intramuscular suspension injection

Drug: GSK1265744 400 mg (200 nm)

Treatment B

EXPERIMENTAL

Approximately 15 subjects will be enrolled and randomized on Day 1 to receive a single dose of 400mg GSK1265744 (Nanomilled 1 micro m) LAP intramuscular suspension injection

Drug: GSK1265744 400 mg (1 micro m)

Treatment C

EXPERIMENTAL

Approximately 15 subjects will be enrolled and randomized on Day 1 to receive a single dose of 400 mg GSK1265744 (Dry milling and homogenization 5 micro m) LAP intramuscular suspension injection

Drug: GSK1265744 400 mg (5 micro m)

Interventions

GSK1265744 30 mg oral DRUG

GSK1265744B 30 mg Tablet taken orally, once a day in the morning with or without a meal

Lead in Period GSK1265744 30mg

Midazolam 3 mg oral + GSK1265744 30mg oral DRUG

Midazolam Syrup 3mg each mL Oral/single dose administer by oral syringe on Day -29 and Day -14

Lead In Period GSK1265744 30 mg + midazolam 3mg

GSK1265744 400 mg (200 nm) DRUG

A single dose of GSK1265744 400 mg Intra Muscular (IM) injection (Nanomilled 200 nm)

Treatment A

GSK1265744 400 mg (1 micro m) DRUG

A single dose of GSK1265744 400 mg IM injection (Nanomilled 1 micrometer)

Treatment B

GSK1265744 400 mg (5 micro m) DRUG

A single dose of GSK1265744 400 mg IM injection (Dry milling and homogenization 5 micrometer)

Treatment C

Eligibility Criteria

• Age: 18 Years - 65 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Male or female between 18 and 65 years of age inclusive, at the time of signing the informed consent.
• Healthy as determined by a responsible and experienced physician, based on a medical evaluation including medical history, physical examination, laboratory tests and cardiac monitoring.
• A female subject is eligible to participate if she is of: non-childbearing potential. Female subjects of child bearing potential must agree to use contraception for at least 6 months after the final dose of study drug and should understand that drug concentrations may be measurable for up to one year after final dose.
• Male subjects with female partners of child-bearing potential must agree to use one of the required contraception methods noted in the protocol.
• Body weight \>=50 Kilograms (kg) for men and \>=45 kg for women and body mass index (BMI) within the range 18.5-31.0 kg/m\^2 (inclusive).
• Alanine aminotransferase (ALT), alkaline phosphatase and bilirubin \<= 1.5xupper limit of normal (ULN) (isolated bilirubin \>1.5xULN is acceptable if bilirubin is fractionated and direct bilirubin \<35%).
• Single QTcB \<450 msec.

You may not qualify if:

• A positive pre-study Hepatitis B surface antigen or positive Hepatitis C antibody result within 3 months of screening
• Current or chronic history of liver disease, or known hepatic or biliary abnormalities (with the exception of Gilbert's syndrome or asymptomatic gallstones).
• A positive pre-study drug/alcohol screen.
• A positive test for Human Immunodeficiency Virus (HIV) antibody.
• History of regular alcohol consumption within 6 months of the study defined as:
• An average weekly intake of \>14 drinks for males or \>7 drinks for females. One drink is equivalent to 12 grams (g) of alcohol: 12 ounces (360 milliliters \[mL\]) of beer, 5 ounces (150 mL) of wine or 1.5 ounces (45 mL) of 80 proof distilled spirits.
• History or regular use of tobacco-or nicotine-containing products within 3 months prior to screening.
• The subject has participated in a clinical trial and has received an investigational product within the following time period prior to the first dosing day in the current study: 30 days, 5 half-lives or twice the duration of the biological effect of the investigational product (whichever is longer).
• Exposure to more than four new chemical entities within 12 months prior to the first dosing day.
• Unable to refrain from the use of prescription or non-prescription drugs, including vitamins, herbal and dietary supplements (including St John's Wort) within 7 days (or 14 days if the drug is a potential enzyme inducer) or 5 half-lives (whichever is longer) prior to the first dose of study medication, unless in the opinion of the Investigator and GSK Medical Monitor the medication will not interfere with the study procedures or compromise subject safety.
• History of sensitivity to any of the study medications, including midazolam and flumazenil, or components thereof or a history of drug or other allergy that, in the opinion of the investigator or GSK Medical Monitor, contraindicates their participation.
• History or presence of allergy or intolerance to the study drugs or their components or drugs of their class.
• Where participation in the study would result in donation of blood or blood products in excess of 500 mL within a 56 day period.
• Pregnant females as determined by positive serum or urine hCG test at screening or prior to dosing.
• Lactating females.

Sponsors & Collaborators

• ViiV Healthcare: lead
• GlaxoSmithKline: collaborator

Study Sites (1)

GSK Investigational Site

Overland Park, Kansas, 66211, United States

Location

MeSH Terms

Conditions

Infections; Acquired Immunodeficiency Syndrome

Interventions

cabotegravir; Midazolam

Condition Hierarchy (Ancestors)

HIV Infections; Blood-Borne Infections; Communicable Diseases; Sexually Transmitted Diseases, Viral; Sexually Transmitted Diseases; Lentivirus Infections; Retroviridae Infections; RNA Virus Infections; Virus Diseases; Slow Virus Diseases; Genital Diseases; Urogenital Diseases; Immunologic Deficiency Syndromes; Immune System Diseases

Intervention Hierarchy (Ancestors)

Benzodiazepines; Benzazepines; Heterocyclic Compounds, 2-Ring; Heterocyclic Compounds, Fused-Ring; Heterocyclic Compounds

Study Officials

• GSK Clinical Trials

  ViiV Healthcare

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: PARALLEL
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: December 17, 2012
• First Posted: December 21, 2012
• Study Start: January 1, 2013
• Primary Completion: April 1, 2014
• Study Completion: April 1, 2014
• Last Updated: April 21, 2014

Record last verified: 2014-04

Locations

US (1)