Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 21, 2026, 4:02 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 35 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Cytochrome P-450 Enzyme System Clear all
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Study of ALXN1840 on the Metabolism of a CYP2B6 Substrate in Healthy Participants

NCT04526210
View directory record Official record
Conditions
Wilson Disease
Interventions
ALXN1840, Bupropion Hydrochloride
Drug
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Aug 31, 2023 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 2 Interventional

The Effect of Thyroid Hormone on Drug Elimination in Cancer Patients

NCT00080574
View directory record Official record
Conditions
Thyroid Cancer
Interventions
Skin Biopsy
Procedure
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
Not listed
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2008 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 4 Interventional

Influence of the MDR1 Genotype on Blood Levels of Indinavir and Saquinavir in Healthy Volunteers

NCT00050180
View directory record Official record
Conditions
Healthy, HIV Infections
Interventions
Midazolam, Indinavir, Saquinavir
Drug
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 60 Years
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 21, 2026, 4:02 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Role of CYP2B6, CYP3A4, and MDR1 in the Metabolic Clearance of Methadone

NCT00504413
View directory record Official record
Conditions
Substance-Related Disorders
Interventions
midazolam(drug), digoxin (drug), Bupropion (drug), Methadone (drug)
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 40 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2011
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 13, 2010 · Synced Oct 21, 2026, 4:02 AM EDT
Withdrawn Not applicable Interventional

Pharmacodynamic Study on Efficacy of Clopidogrel With St. John's Wort

NCT01330589
View directory record Official record
Conditions
Acute Coronary Syndrome
Interventions
Placebo, St. Johns Wort
Drug
Lead sponsor
Lancaster General Hospital
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Lancaster, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 5, 2017 · Synced Oct 21, 2026, 4:02 AM EDT
Not yet recruiting Early Phase 1 Interventional

Immune Checkpoint Inhibitor (ICI)-Drug-Drug Interaction (DDI) Study

NCT07389525
View directory record Official record
Conditions
Gastrointestinal Neoplasms, Genitourinary Cancer, Thoracic Cancer, Sarcoma, Melanoma
Interventions
ICI Therapy
Drug
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jul 15, 2026 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 2 Interventional Results available

A Study to Assess the Effects of Nemolizumab on Cytochrome P450 Substrates in Participants With Moderate-to-Severe Atopic Dermatitis

NCT04562116
View directory record Official record
Conditions
Atopic Dermatitis
Interventions
Nemolizumab, CYP 450 Substrates
Drug
Lead sponsor
Galderma R&D
Industry
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
5
States / cities
North Hollywood, California • Hallandale, Florida • Miami, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 5, 2024 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Phase 1 Study of ALXN1840 on the Metabolism of a CYP2C9 Substrate in Healthy Participants.

NCT04526197
View directory record Official record
Conditions
Wilson Disease
Interventions
ALXN1840, Celecoxib
Drug
Lead sponsor
Alexion Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Aug 21, 2023 · Synced Oct 21, 2026, 4:02 AM EDT
Withdrawn Phase 4 Interventional Accepts healthy volunteers

Phase 4, Vedolizumab-4002 Post-marketing, Disease-Drug-Drug Interaction Study

NCT02760615
View directory record Official record
Conditions
Colitis, Ulcerative, Crohn Disease
Interventions
Caffeine, Losartan, Omeprazole, Dextromethorphan, Midazolam, Vedolizumab
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 55 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
2
States / cities
Cypress, California • Miami, Florida
Source: ClinicalTrials.gov public record
Updated Oct 27, 2020 · Synced Oct 21, 2026, 4:02 AM EDT
Withdrawn Phase 2 Interventional

A Study to Learn About the Medicine Called Nirmatrelvir Used in Combination With Ritonavir in People With Weakened Immune Systems or at Increased Risk for Poor Outcomes Who Are Hospitalized Due to Severe COVID-19

NCT05545319
View directory record Official record
Conditions
Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), Coronavirus Disease 2019 (COVID-19), Immunocompromised, Hospitalization, Child, Hospitalized
Interventions
Nirmatrelvir, Ritonavir, Placebo for nirmatrelvir
Drug
Lead sponsor
Pfizer
Industry
Eligibility
12 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
2
States / cities
Cooperstown, New York • New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 1, 2023 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 1 Interventional

A Study Evaluating Potential Disease-Mediated Drug-Drug Interaction in Adult Participants With Active Eosinophilic Esophagitis Receiving Cendakimab

NCT05175352
View directory record Official record
Conditions
Eosinophilic Esophagitis
Interventions
Cendakimab, CYP substrates
Drug
Lead sponsor
Celgene
Industry
Eligibility
18 Years to 75 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
12
States / cities
Tucson, Arizona • Los Angeles, California • San Diego, California + 9 more
Source: ClinicalTrials.gov public record
Updated Dec 20, 2024 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Evaluate the Effects of a Cytochrome P450 2C19 Inhibitor on the Pharmacokinetics of Miricorilant

NCT05712265
View directory record Official record
Conditions
Antipsychotic Induced Weight Gain, Non-alcoholic Steatohepatitis (NASH)
Interventions
Miricorilant, Fluvoxamine
Drug
Lead sponsor
Corcept Therapeutics
Industry
Eligibility
18 Years to 60 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Mar 22, 2023 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of GSK376501 on CYP450 Activity in Healthy Adult Subjects

NCT00615212
View directory record Official record
Conditions
Diabetes Mellitus, Type 2
Interventions
GSK376501, Midazolam, Rosiglitazone, Flurbiprofen
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 55 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Sep 11, 2017 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Investigate Safety, Tolerability, and Pharmacokinetics (PK) of VH4524184 and the Potential for Changes in Cytochrome P450 3A (CYP3A) Activity

NCT05631704
View directory record Official record
Conditions
HIV Infections
Interventions
VH4524184, Midazolam, Placebo
Drug
Lead sponsor
ViiV Healthcare
Industry
Eligibility
18 Years to 50 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 29, 2025 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

CYP19A1 (Cytochrome P450 Family 19 Subfamily A Member 1) Gene and Pharmacogenetics of Response to Testosterone Therapy

NCT01378299
View directory record Official record
Conditions
Hypogonadism
Interventions
Testosterone Cypionate
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
40 Years to 75 Years · Male only
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2017
U.S. locations
2
States / cities
Albuquerque, New Mexico • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 5, 2019 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Investigate the Effect of GSK1605786 on Hepatic Cytochrome P450, and BCRP and OATP1B1 Transport in Healthy Adult Subjects

NCT01489943
View directory record Official record
Conditions
Crohn's Disease
Interventions
GSK1605786 500 mg, Midazolam 3 mg, Pioglitazone 15 mg, Omeprazole 40 mg, Rosuvastatin 10 mg
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 55 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jul 25, 2017 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 1 Interventional

An Open-Label Study in HIV+ Patients to Determine the Effects of Nevirapine (Viramune) on the Pharmacokinetics of Clarithromycin and Activity of Cytochrome 3A4.

NCT00002194
View directory record Official record
Conditions
HIV Infections
Interventions
Erythromycin, Nevirapine, Clarithromycin
Drug
Lead sponsor
Boehringer Ingelheim
Industry
Eligibility
18 Years to 65 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jun 24, 2005 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 1 Interventional

A Study to Evaluate the Effect of Intravenous (IV) Infusions of Risankizumab on Pharmacokinetics of Cytochome P450 Substrates in Adult Participants With Moderately to Severely Active Ulcerative Colitis or Crohn's Disease

NCT04254783
View directory record Official record
Conditions
Ulcerative Colitis (UC), Crohn's Disease
Interventions
Risankizumab, Cytochrome P450 (CYP) Substrates
Drug
Lead sponsor
AbbVie
Industry
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
4
States / cities
Coronado, California • DeLand, Florida • Margate, Florida + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 1, 2024 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Effect of Genetics on Metabolism of Efavirenz

NCT00245986
View directory record Official record
Conditions
Metabolism
Interventions
Blood draw
Procedure
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 55 Years
Enrollment
350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 1 Interventional

Drug-drug Interaction Trial With Tralokinumab in Moderate to Severe Atopic Dermatitis - ECZTRA 4

NCT03556592
View directory record Official record
Conditions
Atopic Dermatitis
Interventions
Tralokinumab, Caffeine, Warfarin, Omeprazole, Metoprolol, Midazolam Hydrochloride
Drug
Lead sponsor
LEO Pharma
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
9
States / cities
Little Rock, Arkansas • Rogers, Arkansas • San Diego, California + 5 more
Source: ClinicalTrials.gov public record
Updated Feb 24, 2025 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Concomitant Administration of BMS-986195 on Methotrexate, Caffeine, Montelukast, Flurbiprofen, Omeprazole, Midazolam, Digoxin, and Pravastatin

NCT03131973
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
BMS-986195, Methotrexate, Leucovorin, Caffeine, Montelukast, Flurbiprofen, Omeprazole, Midazolam, Digoxin, Pravastatin
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 50 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Dec 15, 2017 · Synced Oct 21, 2026, 4:02 AM EDT
Completed No phase listed Observational

The Impact of Cytochrome P450 Abnormalities in Patients With Delirium.

NCT03829670
View directory record Official record
Conditions
Delirium, Cytochrome P-450 Enzyme System
Interventions
Cytochrome P450 test
Diagnostic Test
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 99 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Park Ridge, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 4, 2024 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Early Phase 1 Interventional

Study to Investigate the Effect of Rocatinlimab (AMG 451) on the Pharmacokinetics of Multiple Cytochrome P450 (CYP450) Substrates in Participants With Moderate to Severe Atopic Dermatitis

NCT05891119
View directory record Official record
Conditions
Atopic Dermatitis
Interventions
Caffeine, Metoprolol, Midazolam, Warfarin, Vitamin K, Omeprazole, Rocatinlimab
Dietary Supplement · Drug
Lead sponsor
Amgen
Industry
Eligibility
18 Years to 65 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
7
States / cities
North Hollywood, California • DeLand, Florida • Hialeah, Florida + 4 more
Source: ClinicalTrials.gov public record
Updated Dec 23, 2025 · Synced Oct 21, 2026, 4:02 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug Interaction Study With Atazanavir Administered With and Without Ritonavir and a Cytochrome P450 Substrate Rosiglitazone

NCT00362726
View directory record Official record
Conditions
HIV Infections
Interventions
Rosiglitazone maleate, Atazanavir Sulphate, Atazanavir Sulphate + Rosiglitazone maleate, Atazanavir Sulphate + Ritonavir, Atazanavir Sulphate + Ritonavir + Rosiglitazone maleate
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years to 50 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Hamilton, New Jersey
Source: ClinicalTrials.gov public record
Updated Apr 8, 2011 · Synced Oct 21, 2026, 4:02 AM EDT