Clinical trials: Cytochrome P450 Enzyme Deficiency
Metabolism
Effect of Genetics on Metabolism of Efavirenz
This study will evaluate the effects of genetics on metabolism of the anti-HIV medicine efavirenz (Sustiva) and will see if Efavirenz interacts with bupropion (Zyban or Wellbutrin), a drug commonly used to treat depression and to…
- Trial name
- NCT00245986
- Testing
- Blood draw
- Where
- United States
- Volunteers
- 350 people, healthy volunteers welcome
- Sponsor
- National Institutes of Health Clinical Center (CC)
Atrial Fibrillation, Venous Thromboses
Pharmacogenetic Dosage Algorithm for Acenocoumarol
The use of coumarins has been a challenge for doctors because of its narrow therapeutic range and they show great inter and intra-individual variability in the dose necessary to achieve an international normalized ratio (INR)…
- Conditions
- Atrial Fibrillation, Venous Thromboses, Cardiac Valve Disease
- Trial name
- NCT03015025
- Testing
- Acenocoumarol
- Where
- Spain
- Volunteers
- 340 people
- Sponsor
- Instituto de Investigación Hospital Universitario La Paz
Drug Intolerance, Cytochrome P450 CYP2D6 Enzyme Deficiency
Evaluation of Pupillometry for cyp2d6 Phenotyping in Children Treated With Tramadol
Pupillometry will be performed before administration of tramadol, at T0 and then 1 to twice per hour in children having received tramadol as a pain killer as part of his/her routine care.
- Conditions
- Drug Intolerance, Cytochrome P450 CYP2D6 Enzyme Deficiency, Drug Effect
- Trial name
- PUPICYP (NCT03052218)
- Testing
- Pupillometry
- Where
- Switzerland
- Volunteers
- 50 people
- Sponsor
- University Hospital, Geneva
HIV Infections
A Study to Investigate Safety, Tolerability, and Pharmacokinetics (PK) of VH4524184 and the Potential for Changes in Cytochrome P450 3A (CYP3A) Activity
This study is designed to investigate the safety, tolerability and PK of VH4524184 (GSK4524184) and the potential of VH4524184 to inhibit or induce CYP3A activity in healthy participants.
- Trial name
- NCT05631704
- Testing
- VH4524184, Midazolam
- Where
- United States
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- ViiV Healthcare
Adverse Drug Events, Adverse Drug Reactions
YouScript IMPACT Registry
This multicenter observational study aims to investigate the benefits of providing pharmacogenetic testing with the YouScript Personalized Prescribing System which includes a clinical decision support tool and individualized…
- Conditions
- Adverse Drug Events, Adverse Drug Reactions, Drug Interaction Potentiation, Drug Metabolism, Poor, CYP2D6-RELATED
- Trial name
- IMPACT (NCT02191358)
- Where
- 7 sites in United States
- Volunteers
- 800 people
- Sponsor
- Genelex Corporation
HIV Infection
Differences in Blood Levels of Nevirapine in HIV-infected Patients in Uganda and the United States
This study will determine whether blood levels of the anti-HIV medicine nevirapine are different in HIV-infected patients in the United States from patients in Uganda.
- Trial name
- NCT00054743
- Testing
- Blood draw
- Where
- 2 sites in United States, Uganda
- Volunteers
- 24 people
- Sponsor
- National Institutes of Health Clinical Center (CC)
Breast Cancer, Endocrine Therapy
Relationship Between Body Composition, Food Consumption, and Micro and Macronutrients With Gene Expression in Breast Cancer
The protocol involves measurement of 25 hidroxy vitamin D, gene expression of cytochrome and vitamin D receptor , endoxifen, tamoxifen, exemestane, and other metobolites related to nutrition and endocrine metabolism.
- Conditions
- Breast Cancer, Endocrine Therapy, Endocrine Therapy Adverse Reaction, Vitamin D Deficiency
- Trial name
- NUTRIBREAST (NCT04389424)
- Testing
- Tamoxifen, Exemestane, Anastrozole
- Where
- Mexico
- Volunteers
- 300 people
- Sponsor
- Instituto Jalisciense de Cancerologia
Adverse Drug Events, Adverse Drug Reactions
Pharmacogenetic Testing Among Home Health Patients
Patients meeting eligibility criteria will be randomized into two groups, one receiving pharmacogenetic testing and the other not receiving pharmacogenetic testing.
- Conditions
- Adverse Drug Events, Adverse Drug Reactions, Drug Interaction Potentiation, Drug Metabolism, Poor, CYP2D6-RELATED
- Trial name
- NCT02378220
- Testing
- Pharmacogenetic testing
- Where
- United States
- Volunteers
- 110 people
- Sponsor
- Genelex Corporation
Cytochrome P450 CYP2D6 Enzyme Deficiency, Poor Metabolizer Due to Cytochrome P450 CYP2D6 Variant
Drug & Gene Interaction Risk Analysis With & Without Genetic Testing Among Patients Undergoing MTM
This randomized controlled trial will evaluate whether the use of pharmacogenetic testing through a Medication Therapy Management (MTM) program has a beneficial impact on drug therapy problems.
- Conditions
- Cytochrome P450 CYP2D6 Enzyme Deficiency, Poor Metabolizer Due to Cytochrome P450 CYP2D6 Variant, Ultrarapid Metabolizer Due to Cytochrome P450 CYP2D6 Variant, Extensive Metabolizer Due to Cytochrome P450 CYP2D6 Variant
- Trial name
- NCT02428660
- Testing
- Pharmacogenetic testing, Software-based drug & gene interaction risk analysis, MTM
- Where
- United States
- Volunteers
- 341 people
- Sponsor
- Genelex Corporation
Atrial Fibrillation, Cardiac Thrombus
VKORC1 and CYP2C9 Gene Polymorphisms and Warfarin Management
The investigators aimed to use pharmacogenetic information in clinical practise which may lead to rapid, efficient, and safe warfarin dosing in this observational prospective study.
- Conditions
- Atrial Fibrillation, Cardiac Thrombus, Deep Vein Thrombosis, Pulmonary Embolism
- Trial name
- NCT00970892
- Testing
- Warfarin dose titration
- Where
- Turkey (Türkiye)
- Volunteers
- 500 people
- Sponsor
- Ankara University
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
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)
Lewy Body Disease
A Genetic and Perfusion Study of Response to Cognitive Enhancers in Lewy Body Disease
Lewy body spectrum disorders are a common group of neurodegenerative diseases that cause memory loss, behavioural and motor disabilities that impair quality of life.
- Trial name
- NCT01944436
- Testing
- Cholinesterase Inhibitors (Rivastigmine, Aricept, Galantamine)
- Where
- Canada
- Volunteers
- 57 people
- Sponsor
- Sunnybrook Health Sciences Centre
Human Immunodeficiency Virus Type 1 (HIV-1) Infection
Drug-Drug Interaction Study of Vesatolimod in Adults With HIV-1 Who Have Very Low or Undetectable Virus Levels
The goal of this clinical study is to learn more about the impact of cobicistat (COBI) (P-glycoprotein (P-gp), breast cancer resistance protein (BCRP), and strong cytochrome P450 enzyme [CYP]3A inhibitor), voriconazole (VOR)…
- Trial name
- NCT05458102
- Testing
- Vesatolimod, Cobicistat, Voriconazole
- Where
- 5 sites in United States
- Volunteers
- 18 people
- Sponsor
- Gilead Sciences
Pain, Other Surgical Procedures
Influence of Genotype of CYP2C9 on Clinical Efficacy and Pharmacokinetics of Piroxicam After Lower Third Molar Surgery
Pharmacogenetics is an area of Pharmacology that studies the contribution of genetic factors to individual responses to drugs. This branch of science involves the variability in pharmacodynamics and pharmacokinetics through the…
- Conditions
- Pain, Other Surgical Procedures, Impacted Third Molar Tooth, Cytochrome P450 CYP2C9 Enzyme Deficiency
- Trial name
- NCT02450487
- Testing
- Piroxicam
- Volunteers
- 105 people, healthy volunteers welcome
- Sponsor
- University of Sao Paulo
HIV Infections
Drug Interaction Study With Atazanavir Administered With and Without Ritonavir and a Cytochrome P450 Substrate Rosiglitazone
The purpose of this clinical research study is to assess the effect of Atazanavir 400 mg QD and Atazanavir/Ritonavir 300/100 mg QD at steady state on the single dose pharmacokinetics of RGZ in healthy subjects.
- Trial name
- NCT00362726
- Testing
- Rosiglitazone maleate, Atazanavir Sulphate, Atazanavir Sulphate + Rosiglitazone maleate
- Where
- United States
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- Bristol-Myers Squibb
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
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
Cytochrome P450 CYP3A Enzyme Deficiency
Physiological Study of the Human CYP3A Activity (PiSA)
Investigator-initiated physiological study to characterize the function of a major drug metabolizing enzyme using a microdosed phenotyping probe to avoid unwanted, concentration-dependent effects.
- Trial name
- PiSA (NCT03204578)
- Testing
- AB (Midazolam OD formulation/Dormicum), BA (Dormicum/Midazolam OD formulation)
- Where
- Switzerland
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University Hospital, Basel, Switzerland