EtOH Interaction Study
A Study to Investigate Potential Interactions Between GSK598809 and Ethanol in Healthy Subjects
This study will investigate the possible effects of alcohol in combination with GSK598809 on the central nervous system in 20 healthy male and female volunteers, between 18 and 65 years of age.
During 4 separate study periods subjects will receive the following treatment combinations: Alcohol + GSK598809, alcohol + placebo drug, placebo infusion + GSK598809, and placebo infusion + placebo drug. A placebo is a pill or liquid infusion which contains no drug or alcohol; it is a dummy version. Therefore it is administered in the same way that either the study drug or ethanol is depending on which placebo it is. All study drugs are administered in a random order and both the doctor and the participant are not aware of the treatment combination. However treatment combinations will be available at the end of the study or in case of an emergency. GSK598809 is administered orally and alcohol is administered per infusion. The duration of the infusion is 5 hours, during which approximately 75 grams of alcohol is infused, which is comparable to less than one bottle of wine.
調査の概要
詳細な説明
This is a blinded, randomised, placebo-controlled, double-dummy, four-period crossover study to investigate the psychomotor and cognitive effects of GSK598809 alone and in combination with ethanol in healthy subjects.
A sufficient number of subjects, approximately 20 healthy (18 to 65 years) male and female subjects will be enrolled. Occasional smokers who are non-daily smokers may be enrolled in the study, but will not be permitted to smoke whilst in the unit.
Subjects will be screened by medical history, physical examination and routine laboratory tests within three weeks before the start of the study. Within three weeks or on Day -1 they will have a training session to get familiar with the pharmacodynamic tests.
There will be four crossover sessions. All study occasions/sessions will be performed in the same way. The duration of each treatment session is 5 study days. Subjects will report to the clinic during the evening of Day -1 in a fasted condition and will remain in the clinic for two overnight stays. A short study introduction will be given followed by admission procedures. Dinner will be served after the collection of blood samples for laboratory safety tests.
On morning of study day 1, approximately 08:00hrs two intravenous cannulae (one cannula for blood sampling and another cannula for infusion of the ethanol/placebo) will be inserted. Before the start of the infusion a light breakfast will be given. The alcohol infusion will start in the morning, between approximately 09:30hr and 10:00hr and will take place for five hours, followed by a three-hour infusion-free washout period. GSK598809 or matching placebo will be administered orally 30 minutes after the start of the alcohol infusion. A standardised lunch will be given at approximately 3.5 hours post dose and dinner approximately 9 hours post dose.
Subjects will be discharged after the completion of study assessments and AE review on Day 2 and if deemed appropriate by the investigator or designee. Study Days: 3 and 4 will be outpatient visits for collection of pharmacokinetic samples and AE review.
During each session, a range of central nervous system (CNS) functions will be tested frequently, using a validated CNS-battery, CHDR Neurocart. In addition, pharmacokinetic measurements will be taken for plasma levels of GSK598809 and GSK685249 (GSK598809 metabolite). Pharmacokinetic measures will also be taken for breath alcohol and blood alcohol levels.
There will be a washout period of at least five days between treatment sessions. The follow up visit will take place approximately 7 days post final treatment.
研究の種類
入学 (実際)
段階
- フェーズ 1
連絡先と場所
研究場所
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Leiden、オランダ、2333 CL
- GSK Investigational Site
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参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Generally healthy.
- Occasional non-daily smokers.
- Willing to use appropriate contraception method.
- Weight more than 50 kg.
- BMI within the range 18 - 30 kg/m2.
Exclusion Criteria:
- Pregnant or breast feeding female.
- Daily smoker.
- Asthma or a history of asthma.
- Abuse of drugs or alcohol.
- Psychiatric illness.
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：処理
- 割り当て：ランダム化
- 介入モデル：クロスオーバー割り当て
- マスキング：ダブル
武器と介入
参加者グループ / アーム |
介入・治療 |
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プラセボコンパレーター：Placebo to match GSK598809
Placebo to match GSK598809.
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Two 175 mg doses of GSK598809 will be given.
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プラセボコンパレーター：Placebo to match ethanol infusion
Glucose solution to be given in the same way as ethanol.
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A constant ethanol level of 0.6 g·L-1 for five hours will be given to the subjects intravenously.
This level shows significant CNS effects, without causing too many inadvertent events.
Furthermore this level is considered safe as it is just above the legal driving limit in the Netherlands (i.e.
0.5 g·L-1) and these levels are routinely achieved during social drinking.
Moreover, this level leaves enough room for CNS-impairment without compromising safety, in case of a (supra-) addictive drug-alcohol interaction.
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
時間枠 |
|---|---|
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Safety and tolerability: Vital sign measurement, 12 lead ECG and telemetry, safety laboratory sampling including prolactin and lipid measurements, Barnes Akathesia Scale (BAS), Simpson-Angus Scale (SAS) and Abnormal Involuntary Movement Scale (AIMS).
時間枠：Screening: BAS, SAS and AIMS (as training only), 12 lead ECG, vital signs and clinical labs. All will be measured throughout dosing day (Day 1), day 2, 3: vital signs, day 4: vital signs, clinical labs, follow up: clinical labs, vital signs, 12 lead ECG
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Screening: BAS, SAS and AIMS (as training only), 12 lead ECG, vital signs and clinical labs. All will be measured throughout dosing day (Day 1), day 2, 3: vital signs, day 4: vital signs, clinical labs, follow up: clinical labs, vital signs, 12 lead ECG
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Pharmacokinetics: breath ethanol concentrations, blood ethanol concentrations, main pharmacokinetic parameters of GSK598809 and its metabolite (GSK685249) AUC∞, Cmax, Tmax and t½.
時間枠：All will be measured throughout day 1, PK blood sampling for GSK598809 and GSK685249 will also be collected on Day 2, 3 and 4.
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All will be measured throughout day 1, PK blood sampling for GSK598809 and GSK685249 will also be collected on Day 2, 3 and 4.
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Pharmacodynamic: saccadic eye movements, smooth pursuit eye movements, body sway, adaptive tracking, Visual Verbal Learning Test (VVLT).
時間枠：Saccadic eye movement, smooth pursuit eye movements, body sway and adaptive tracking measured at set intervals between 1.5hrs pre dose to 7.5hrs post dose. VVLT administered between 0.5hrs post dose to 3.5hrs post dose.
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Saccadic eye movement, smooth pursuit eye movements, body sway and adaptive tracking measured at set intervals between 1.5hrs pre dose to 7.5hrs post dose. VVLT administered between 0.5hrs post dose to 3.5hrs post dose.
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二次結果の測定
結果測定 |
時間枠 |
|---|---|
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Pharmacodynamic/biomarker endpoints: saccadic eye movements, visual analogue scales (VAS B&L) according to Bond & Lader, Visual Analogue Scales for 'alcohol effects' (VAS 'Alcohol Effects').
時間枠：Saccadic eye movements at time points as given above. VAS B&L and VAS 'Alcohol Effects' at following time points: -1.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5, 7.5 hrs post dose.
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Saccadic eye movements at time points as given above. VAS B&L and VAS 'Alcohol Effects' at following time points: -1.5, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5, 6.5, 7.5 hrs post dose.
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協力者と研究者
スポンサー
出版物と役立つリンク
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (実際)
研究の完了 (実際)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (見積もり)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
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