Infections, Bacterial
Conditions
Keywords
GSK1322322, repeat dose, healthy subjects, elderly, drug-drug interaction, probe, midazolam, double-blind
Brief summary
This study will be the first repeat dose administration of GSK1322322 to investigate safety, tolerability, and pharmacokinetics in healthy subjects as well as elderly volunteer subjects. The study will also include a P450 probe drug (midazolam) to evaluate the effect of GSK1322322 to inhibit or induce CYP3A4 substrates.
Interventions
DRUGGSK1322322/placebo
GSK1322322/placebo escalating doses from 500mg to 1500mg
DRUGGSK1322322/placebo and midazolam
GSK1322322/placebo and 5mg midazolam
Sponsors
GlaxoSmithKline
Study design
Allocation
RANDOMIZED
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* The subject is healthy. * Male or female between 18 and 65 years of age inclusive, at the time of signing the informed consent (except for elderly cohort-Part B, see #8 below).. * A female is eligible to enter and participate in this study if she is of non-childbearing potential * Male subjects must agree to use one of the contraception methods in the protocol * Body weight greater than or equal to 50 kg and body mass index between 18.5-29.9 kg/m2 inclusive * Capable of giving written informed consent * QTcB less than 450 msec; or QTc less than 480 msec in subjects with Bundle Branch Block on Screening ECG * Part B/Cohort E Elderly cohort: The subject is greater than 65 years of age.
Exclusion criteria
* The subject has a positive pre-study drug/alcohol screen. * A positive pre-study Hepatitis B surface antigen or positive Hepatitis C antibody result within 3 months of screening. * A positive test for HIV antibody. * History of regular alcohol consumption within 6 months of the study defined in the protocol * 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. * 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, 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. * 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 human chorionic gonadotropin test at screening or prior to dosing. * Lactating females. * Subjects who have asthma or a history of asthma within the past 6 months. * History of smoking or history of regular use of tobacco- or nicotine-containing products within 3 months prior to screening. * Consumption of red wine, seville oranges, grapefruit or grapefruit juice, pummelos, satsuma, ugli, tangerine, and tangelo, exotic citrus fruits, grapefruit hybrids or fruit juices from 7 days prior to the first dose of study medication. * For probe cohort in Part A: any condition or symptom contraindicated for administration of midazolam including acute narrow-angle or open-angle glaucoma.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| GSK1322322 safety parameters, adverse events , absolute values and changes over time of clinical lab testing, vital signs, electrocardiogram | 6 weeks |
| GSK1322322 pharmacokinetic parameters following single dose administration on Day 1 and following repeat administration where applicable on Day 7 and Day 12. | 15 days |
Secondary
| Measure | Time frame |
|---|---|
| PK for midazolam with and without GSK1322322 | 15 days |
| Blood PK for GSK1322322 | 15 days |
| Urine PK for GSK1322322 | 15 days |
| GSK1322322 Age Effect on PK Blood and Urine | 15 days |
Countries
Australia
Outcome results
None listed