A First Time in Human Study in Healthy Volunteers to Investigate a New Medicine to Treat Malaria

GlaxoSmithKline (GSK)

Status and phase: Terminated; Phase 1

Conditions: Malaria

Treatments: Drug: GSK932121; Rosiglitazone; Rosuvastatin

Study type: Interventional

Funder types: Industry

Identifiers

NCT00811356

111319

Details and patient eligibility

About

The purpose of this study is to determine if the study drug (antimalarial medication) is safe when given to healthy subjects as a single dose or as repeated doses, to understand the effect of food on single doses of study drug and to determine if the study drug has an effect on other approved medications such as rosiglitazone and rosuvastatin.

Full description

Malaria is a type of parasitic infection, common in tropical and subtropical regions of the world, including parts of the Americas, Asia, and Africa. In recent years there has been a rapid spread of drug resistant malaria which makes it necessary to develop new antimalarial treatments. In animal studies, GSK932121 is shown to be able to kill the malaria parasite and is fully active against drug resistant malaria parasites. It is hoped that information collected on this study will lead to an improved treatment for malaria.

This is a first time in human fusion study which has 3 parts:

Part A - single dose escalation/ food effect: a study where the study drug is given once only- first at the lowest dose of in a group of participants and the dose increased only if the previous dose is found to be safe. It also looks at the effect of food on the study drug in the body Part B - repeat dose escalation: a study where the study drug will be given daily for up to 7 days - first at a lower dose in a group of participants and the dose increased for the next group only if the previous dose is found to be safe and Part B - drug-drug interaction: a study where the study drug will be given daily for up to 7 days at a dose determined to be safe in previous groups of participants and looking at the effect of the study drug on other specific approved medications (such as rosiglitazone--a diabetic medication and rosuvastatin--a cholesterol lowering medication) in the body.

Safety will be assessed by measurement of vital signs, cardiac monitoring, spirometry, collection of adverse event assessments, renal biomarkers and laboratory safety tests.

Enrollment: 12 patients

Sex: All

Ages: 18 to 50 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Male or female between 18 and 50 years of age, inclusive
• Females of non-childbearing potential (as pre-menopausal females with a documented tubal ligation or hysterectomy; or postmenopausal defined as 12 months of spontaneous amenorrhea
• Body weight > 50 kg and BMI within the range 19 - 31 kg/m2 (inclusive)
• QTcB or QTcF < 450 msec; or QTc < 480 msec in subjects with Bundle Branch Block

Exclusion criteria

• Positive pre-study drug/alcohol screen
• 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
• Participation in a clinical trial with an investigational product within 30 days or 5 half-lives of the investigational product (whichever is longer) prior to start of the new study
• Exposure to more than four new drugs or 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 5 half-lives (whichever is longer) prior to the first dose of study medication
• History of sensitivity to any of the study medications, or components thereof or a history of drug or other allergy that would be contraindicated
• 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.
• Unwillingness or inability to follow the procedures outlined in the protocol.
• History of sensitivity to heparin or history of heparin-induced thrombocytopenia if heparin is used to maintain the patency of an intravenous cannula.
• Asthma or a history of asthma
• Smoking or history or regular use of tobacco- or nicotine-containing products within 2 months prior to screening
• Consumption of red wine, seville oranges, grapefruit or grapefruit juice and/or pummelos, exotic citrus fruits, grapefruit hybrids or fruit juices from 7 days prior to the first dose of study medication.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Single Blind

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12 participants in 1 patient group

Single Dose, Repeat Dose, Drug-Drug Interaction

Experimental group

Description:

GSK932121 or placebo will be administered as a single dose with or without food in a dose escalation manner. Once the results from the single dose is obtained and reviewed, GSK932121 or placebo will be administered as a repeat dose. The results from each repeat dose level will be reviewed prior to determining the next repeat dose level. To better understand the effect of GSK932121 on rosiglitazone and rosuvastatin, a drug-drug interaction arm will also be investigated in this study. Rosiglitazone and rosuvastatin will be administered alone, then GSK932121 will be given as a repeat dose. Rosiglitazone and rosuvastatin will then be administered in combination with GSK932121.

Treatment:

Drug: GSK932121; Rosiglitazone; Rosuvastatin