- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT00791869
Pharmacogenetics of Bupropion Metabolism
Panoramica dello studio
Stato
Condizioni
Descrizione dettagliata
Bupropion is widely used in the treatment of depression and for smoking cessation. It's most abundant metabolite, hydroxybupropion, may be responsible for most of the therapeutic effect of bupropion under conditions of long term dosing. Because the primary enzyme involved in metabolism of bupropion to hydroxybupropion is the liver enzyme CYP2B6, we propose to study the effect of different CYP2B6 genotypes on the metabolism of bupropion. These data will guide the use of genotypes as a surrogate for measuring drug blood levels in studying genetic determinants of outcomes for bupropion treatment.
A minimum of Forty-four subjects with 4 different CYP2B6 genotypes will participate in a 7-day study in which they take bupropion as outpatients for 6 days (to achieve steady state drug levels) and then come to the San Francisco General Hospital (SFGH) Clinical Research Center for a 1-day admission during which multiple blood and urine samples will be collected for pharmacokinetic analysis.
Tipo di studio
Iscrizione (Effettivo)
Contatti e Sedi
Luoghi di studio
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California
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San Francisco, California, Stati Uniti, 94110
- San Francisco General Hospital-Clinical Research Ward
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Metodo di campionamento
Popolazione di studio
Descrizione
Inclusion Criteria:
- Age: 18 - 65 years
- Gender: Either
- Ethnic/Racial Group: Any
- Smoking Status: Both smokers and non-smokers are eligible
- CYP2B6 genotype: CYP2B6 *1/*1 (11 subjects); *4, *5 and *6 alleles (11 each) [44 subjects total] Up to 15 additional subjects may be studied with genotypes that do not fall into one of the primary groups.
Exclusion Criteria:
- Medical: Exclude most any chronic illness requiring regular medication.
- Cardiac: History of angina or other serious heart disease; ECG abnormalities on screening.
- Hypertension: screening visit BP of 150/95 or more after 5 min rest
- Respiratory: Asthma - acceptable if in remission, otherwise exclude.
- Systemic: "Morbidly Obese" Exclude if BMI > 35
- Diabetes: By history
- Chronic Active Hepatitis: By history; elevated Liver Function Tests
- Cancers: By history
- Pregnancy/breastfeeding: By history; positive urine pregnancy test
- Seizures: individuals with a history of seizures will be excluded (risk factor for bupropion-induced seizures)
- Eating Disorders: individuals with a history of eating disorders will be excluded (risk factor for bupropion-induced seizures)
- Head Trauma: individuals with a history of head trauma will be excluded (risk factor for bupropion-induced seizures)
- Other tobacco users (pipe, cigar, chewing tobacco, snuff users
- Medications/Supplements: General Exclusion = "any regular oral and/or prescription drug use"; current use of oral contraceptives or other female hormones.
- Drug/alcohol use: no alcohol abuse by history, no regular recreational drug use, any intravenous drug abuse, recent history of Treatment program
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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Area under the plasma concentration versus time curve (AUC) for bupropion
Lasso di tempo: 0, 4, 8, 12, 16,24 hours from steady state
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Subjects took bupropion daily for 7 days as outpatients prior to the study day to allow them to reach steady state concentrations of bupropion and its metabolites.
The time frame shown is measured from 08:00 on the morning of inpatient admission.
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0, 4, 8, 12, 16,24 hours from steady state
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Collaboratori e investigatori
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Studia le date principali
Inizio studio
Completamento primario (Effettivo)
Completamento dello studio (Effettivo)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Stima)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Altri numeri di identificazione dello studio
- H133-31868
- U01DA020830 (Sovvenzione/contratto NIH degli Stati Uniti)
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .