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ClinicalTrials.gov public records Last synced Oct 21, 2026, 9:42 AM EDT

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Showing 25–35 of 35 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Cytochrome P-450 Enzyme System Clear all
Completed Phase 1 Interventional

Open Label, Drug-Drug Interaction (DDI) Study of Dupilumab (REGN668/SAR231893) in Patients With Moderate to Severe Atopic Dermatitis (AD)

NCT02647086
View directory record Official record
Conditions
Atopic Dermatitis
Interventions
Dupilumab, Midazolam, Omeprazole, Warfarin, Caffeine, Metoprolol
Drug
Lead sponsor
Regeneron Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
5
States / cities
Little Rock, Arkansas • Centennial, Colorado • Minneapolis, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 22, 2016 · Synced Oct 21, 2026, 9:42 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Omnitram Pharmacokinetic and Analgesic Study Following CY2D6 Inhibition With Paroxetine In Healthy Volunteers

NCT03312777
View directory record Official record
Conditions
Pain
Interventions
Omnitram, Tramadol, Placebo
Drug
Lead sponsor
Syntrix Biosystems, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Dec 28, 2017 · Synced Oct 21, 2026, 9:42 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, 9:42 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, 9:42 AM EDT
Completed Phase 2 Interventional

Examination of Tamoxifen in Acute Mania in Patients With Bipolar I Disorder

NCT00026585
View directory record Official record
Conditions
Bipolar Disorder
Interventions
Tamoxifen
Drug
Lead sponsor
National Institute of Mental Health (NIMH)
NIH
Eligibility
18 Years to 65 Years · Male only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2007
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 21, 2026, 9:42 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, 9:42 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, 9:42 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, 9:42 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, 9:42 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, 9:42 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

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

NCT03358706
View directory record Official record
Conditions
Crohn Disease, Ulcerative Colitis
Interventions
Ustekinumab IV Infusion, Ustekinumab SC Injection, Midazolam 2 mg, Warfarin 10 mg, Vitamin K 10 mg, Omeprazole 20 mg, Dextromethorphan 30 mg, Caffeine 100 mg
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years to 75 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
3
States / cities
Cypress, California • Miami Springs, Florida • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 21, 2025 · Synced Oct 21, 2026, 9:42 AM EDT