Clinical trials: Cytochrome P-450 Enzyme System
Hereditary Angioedema
An Open-label Drug-Drug Interaction Study to Evaluate the Effect of BCX7353 on Cytochrome P450 Enzyme Activity Using Probe Substrates
This is an open-label, single sequence study to evaluate the effect of BCX7353 on hepatic and intestinal cytochrome P450 enzymes using probe substrate drugs in healthy subjects.
- Trial name
- NCT02819102
- Testing
- BCX7353 and probes
- Where
- United Kingdom
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- BioCryst Pharmaceuticals
Hepatic Cirrhosis
Evaluation of the PK of NRL972 Following Pre- and co-Administration of Ursodeoxycholic Acid and Cloxacillin
A study in healthy volunteers to determine whether different drugs metabolised by the liver have any effects on how NRL972 is processed within the body.
- Trial name
- NCT00857480
- Testing
- NRL972
- Where
- Bulgaria
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Norgine
HIV Infections
An Open-Label Study in HIV+ Patients to Determine the Effects of Nevirapine (Viramune) on the Pharmacokinetics of Clarithromycin and Activity of Cytochrome 3A4.
To evaluate the potential pharmacokinetic interaction between nevirapine and clarithromycin, and to determine the effects of nevirapine on cytochrome P450 3A4 (CYP3A4) activity in vivo.
- Trial name
- NCT00002194
- Testing
- Erythromycin, Nevirapine, Clarithromycin
- Where
- United States
- Volunteers
- 36 people
- Sponsor
- Boehringer Ingelheim
Bipolar Disorder
Examination of Tamoxifen in Acute Mania in Patients With Bipolar I Disorder
The purpose of this study is to examine how the drug tamoxifen affects the brain in patients with bipolar I disorder. Bipolar Disorder (BD) is a severe, chronic, and often life-threatening illness for which safe and effective…
- Trial name
- NCT00026585
- Testing
- Tamoxifen
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- National Institute of Mental Health (NIMH)
Liver Cirrhosis
In Vivo Determination of Cytochrome P450 Activities in Patients With Liver Cirrhosis
Subjects will receive the "Basel phenotyping cocktail" capsule orally with 120-200ml tap water in fasted state. After intake peripheral venous blood samples will be drawn.
- Trial name
- CombiCapsLC (NCT03337945)
- Testing
- "Basel phenotyping cocktail" capsule
- Where
- Switzerland
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- University Hospital, Basel, Switzerland
Crohn's Disease
A Study to Investigate the Effect of GSK1605786 on Hepatic Cytochrome P450, and BCRP and OATP1B1 Transport in Healthy Adult Subjects
The purpose of this study is to test the effects of study drug (GSK1605786) on the blood levels of multiple commonly used drugs that are given to measure how your liver breaks down the study drug.
- Trial name
- NCT01489943
- Testing
- GSK1605786 500 mg, Midazolam 3 mg, Pioglitazone 15 mg
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- GlaxoSmithKline
Liver Cirrhosis
Predicting Response and Exposure Changes in Cirrhosis for Effectiveness
The goal of this clinical trial is to learn how liver cirrhosis affects the way the body processes drugs in adults with different stages of liver cirrhosis.
- Trial name
- PRECISE (NCT07750587)
- Testing
- Five-Drug CYP Probe Cocktail
- Volunteers
- 45 people
- Sponsor
- Academisch Medisch Centrum - Universiteit van Amsterdam (AMC-UvA)
Crohn Disease, Ulcerative Colitis
A Study to Evaluate the Effect of Ustekinumab on Cytochrome P450 Enzyme Activities Following Induction and Maintenance Dosing in Participants With Active Crohn's Disease or Ulcerative Colitis
The purpose of this study is to evaluate the potential effects of an intravenous (IV) induction and subcutaneous (SC) maintenance administration of ustekinumab on the pharmacokinetic (PK) of a cocktail of representative probe…
- Trial name
- NCT03358706
- Testing
- Ustekinumab IV Infusion, Ustekinumab SC Injection, Midazolam 2 mg
- Where
- 16 sites in United States, Belgium and 2 more
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- Janssen Research & Development, LLC
Colitis, Ulcerative, Crohn Disease
Phase 4, Vedolizumab-4002 Post-marketing, Disease-Drug-Drug Interaction Study
The purpose of this study is to evaluate in a step-wise approach the disease drug-drug interaction (DDI) potential for vedolizumab to indirectly affect the exposure of cytochrome P-450 (CYP) substrate drugs by modulating…
- Trial name
- NCT02760615
- Testing
- Caffeine, Losartan, Omeprazole
- Where
- 2 sites in United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Takeda
HIV Infections
Optimizing Antiretroviral Therapy in HIV-Infected Children and Adolescents
This was a feasibility study aimed at elevating protease inhibitors (PI) dosage as a part of active antiretroviral therapy (HAART).
- Trial name
- NCT00207948
- Testing
- Dose adjustment of Kaletra
- Where
- United States
- Volunteers
- 4 people
- Sponsor
- Children's National Research Institute
Rheumatoid Arthritis
Effects of Concomitant Administration of BMS-986195 on Methotrexate, Caffeine, Montelukast, Flurbiprofen, Omeprazole, Midazolam, Digoxin, and Pravastatin
Drug-drug interaction study in healthy men and women not of childbearing potential. Assess the effect of BMS-986195 on the pharmacokinetics of methotrexate, caffeine, montelukast, flurbiprofen, omeprazole, midazolam, digoxin, and…
- Trial name
- NCT03131973
- Testing
- BMS-986195, Methotrexate, Leucovorin
- Where
- United States
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- Bristol-Myers Squibb
Analgesia, CYP2D6 Polymorphism
Cytochrome P450's Pharmacogenomics in Chronic Pain Patients
The use of titrated drugs is at the base of a successful antalgic treatment in order to provide both an adequate relief and a satisfactory tolerability profile.
- Conditions
- Analgesia, CYP2D6 Polymorphism, Opioid Use, Chronic Pain
- Trial name
- FACIDOCRO (NCT03411759)
- Where
- Italy
- Volunteers
- 100 people
- Sponsor
- University of Bologna
Inflammation
Impact of Acute and Chronic Inflammation on Cytochromes P450 Activity Measured With Dried Blood Spot
Cytochromes P450, main enzymes of drug metabolism, play a prominent role in the first-pass metabolism of oral substances. Inter-individual variability in their activity due to genetic and environmental factors has been observed…
- Trial name
- NCT03262051
- Testing
- CYP phenotyping
- Where
- Switzerland
- Volunteers
- 106 people
- Sponsor
- University Hospital, Geneva
Anovulation, Disorder Due Cytochrome P450 CYP2D6 Variant
Influence of Pharmacogenetic Factors, Paroxetine and Clarithromycin on Pharmacokinetics of Clomiphene
Aim of the study is the clinical validation of the metabolism and the pharmakokinetic of Clomifen in correlation to CYP2D6 and inhibition of CYP3A4.
- Conditions
- Anovulation, Disorder Due Cytochrome P450 CYP2D6 Variant, Cytochrome P450 CYP3A Enzyme Deficiency
- Trial name
- NCT01289756
- Testing
- Clomiphene, clomiphene and paroxetine, clomiphene and clarithromycin
- Where
- Germany
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Robert Bosch Gesellschaft für Medizinische Forschung mbH (RBMF)
Healthy, HIV Infections
Influence of the MDR1 Genotype on Blood Levels of Indinavir and Saquinavir in Healthy Volunteers
This study will examine whether a particular type of gene (MDR1) in the body can affect blood levels of two protease inhibitors, indinavir and saquinavir, which are used to treat people with HIV.
- Trial name
- NCT00050180
- Testing
- Midazolam, Indinavir, Saquinavir
- Where
- United States
- Volunteers
- 81 people
- Sponsor
- National Institutes of Health Clinical Center (CC)
Amyotrophic Lateral Sclerosis, Cytochrome P-450 Enzyme System
A Study of LY3873862 in Participants With Sporadic or Familial Amyotrophic Lateral Sclerosis (ALS).
The main purpose of this study in participants with Sporadic or Familial Amyotrophic Lateral Sclerosis (ALS) is to test the safety of different doses and to determine the amount of LY3873862 that gets into the bloodstream and how…
- Trial name
- NCT07883590
- Testing
- LY3873862, CYP450 Drug Cocktail
- Where
- 4 sites in United States, Canada
- Volunteers
- 32 people
- Sponsor
- Eli Lilly and Company
Liver Cirrhosis
A Study to Compare How Different Substances (Caffeine, Warfarin, Omeprazole, Metoprolol, and Midazolam) Are Handled by the Body of Healthy People and People With Liver Cirrhosis
This study is open to healthy adults and adults with liver cirrhosis. The purpose of this study is to compare how different medicines are handled by the body in people with and without liver cirrhosis.
- Trial name
- NCT05741385
- Testing
- Caffeine, Warfarin sodium, Omeprazole
- Where
- Germany
- Volunteers
- 4 people
- Sponsor
- Boehringer Ingelheim
Sleep Apnea
Hepatic Drug Biotransformation in Children With Obstructive Sleep Apnea
The purpose of this research study is to determine the effect of chronic nighttime low oxygen saturations on selected body systems (liver) that break down drugs in children with obstructive sleep apnea syndrome (OSAS).
- Trial name
- NCT00310323
- Testing
- Dextromethorphan, Caffeine
- Where
- 2 sites in United States
- Volunteers
- 69 people
- Sponsor
- Virginia Commonwealth University
Cerebral Infarction
Comparison of Triflusal and Clopidogrel in Secondary Prevention of Stroke Based on the Genotyping
The purpose of this study is to compare the preventive effect of stroke between triflusal and clopidogrel in ischemic stroke patient based on the cytochrome P450 2C19 (CYP2C19) polymorphism.
- Trial name
- MAESTRO (NCT01174693)
- Testing
- Triflusal, Clopidogrel
- Where
- 18 sites in South Korea
- Volunteers
- 795 people
- Sponsor
- Gangnam Severance Hospital
Substance-Related Disorders
Role of CYP2B6, CYP3A4, and MDR1 in the Metabolic Clearance of Methadone
The purpose of this study is to determine to what extent CYP2B6, CYP3A4, and MDR1 polymorphisms affect the metabolism of methadone.
- Trial name
- NCT00504413
- Testing
- midazolam(drug), digoxin (drug), Bupropion (drug), Methadone (drug)
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Washington