{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=CYP1A2+%28caffeine%29",
    "query": {
      "intervention": "CYP1A2 (caffeine)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 11,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=CYP1A2+%28caffeine%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-22T15:12:10.308Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT01525628",
      "title": "Drug Drug Interaction Study Between BI 201335 and BI 207127 in Chronic Hepatitis C Infected Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hepatitis C, Chronic"
      ],
      "interventions": [
        {
          "name": "midazolam",
          "type": "DRUG"
        },
        {
          "name": "BI 201335",
          "type": "DRUG"
        },
        {
          "name": "tenofovir",
          "type": "DRUG"
        },
        {
          "name": "caffeine",
          "type": "DRUG"
        },
        {
          "name": "tolbutamide",
          "type": "DRUG"
        },
        {
          "name": "pegylated interferon",
          "type": "DRUG"
        },
        {
          "name": "BI 207127",
          "type": "DRUG"
        },
        {
          "name": "ribavirin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Boehringer Ingelheim",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 72,
      "start_date": "2012-04",
      "completion_date": "2014-10",
      "has_results": true,
      "last_update_posted_date": "2016-06-10",
      "last_synced_at": "2026-09-22T15:12:10.308Z",
      "location_count": 5,
      "location_summary": "La Mesa, California • Rockville, Maryland • Marlton, New Jersey + 2 more",
      "locations": [
        {
          "city": "La Mesa",
          "state": "California"
        },
        {
          "city": "Rockville",
          "state": "Maryland"
        },
        {
          "city": "Marlton",
          "state": "New Jersey"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01525628"
    },
    {
      "nct_id": "NCT02567682",
      "title": "Drug Interaction Study of GBT440 With Caffeine, S-warfarin, Omeprazole, and Midazolam in Healthy Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "GBT440",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Global Blood Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 24,
      "start_date": "2015-09",
      "completion_date": "2016-05",
      "has_results": false,
      "last_update_posted_date": "2017-04-12",
      "last_synced_at": "2026-09-22T15:12:10.308Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02567682"
    },
    {
      "nct_id": "NCT03131973",
      "title": "Effects of Concomitant Administration of BMS-986195 on Methotrexate, Caffeine, Montelukast, Flurbiprofen, Omeprazole, Midazolam, Digoxin, and Pravastatin",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Rheumatoid Arthritis"
      ],
      "interventions": [
        {
          "name": "BMS-986195",
          "type": "DRUG"
        },
        {
          "name": "Methotrexate",
          "type": "DRUG"
        },
        {
          "name": "Leucovorin",
          "type": "DRUG"
        },
        {
          "name": "Caffeine",
          "type": "DRUG"
        },
        {
          "name": "Montelukast",
          "type": "DRUG"
        },
        {
          "name": "Flurbiprofen",
          "type": "DRUG"
        },
        {
          "name": "Omeprazole",
          "type": "DRUG"
        },
        {
          "name": "Midazolam",
          "type": "DRUG"
        },
        {
          "name": "Digoxin",
          "type": "DRUG"
        },
        {
          "name": "Pravastatin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bristol-Myers Squibb",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 26,
      "start_date": "2017-05-13",
      "completion_date": "2017-11-10",
      "has_results": false,
      "last_update_posted_date": "2017-12-15",
      "last_synced_at": "2026-09-22T15:12:10.308Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03131973"
    },
    {
      "nct_id": "NCT00741468",
      "title": "Open-Label, Multiple-Dose, Non-Randomized Study to Assess Drug-Drug Interactions of Proellex® in Female Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Drug Interactions"
      ],
      "interventions": [
        {
          "name": "Proellex",
          "type": "DRUG"
        },
        {
          "name": "CYP1A2 probe",
          "type": "DRUG"
        },
        {
          "name": "CYP2C9 probe",
          "type": "DRUG"
        },
        {
          "name": "CYP2C19 probe",
          "type": "DRUG"
        },
        {
          "name": "CYP2D6 probe",
          "type": "DRUG"
        },
        {
          "name": "CYP3A4 probe",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Repros Therapeutics Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "48 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 48 Years · Female only"
      },
      "enrollment_count": 18,
      "start_date": "2008-07",
      "completion_date": "2008-10",
      "has_results": true,
      "last_update_posted_date": "2014-08-22",
      "last_synced_at": "2026-09-22T15:12:10.308Z",
      "location_count": 1,
      "location_summary": "Hackensack, New Jersey",
      "locations": [
        {
          "city": "Hackensack",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00741468"
    },
    {
      "nct_id": "NCT02434861",
      "title": "An Open Label, Single Dose, Three Part Study to Assess the Effects of Rolapitant (2 mg/mL IV Solution) on the Pharmacokinetics of Digoxin; Sulfasalazine; and the Cooperstown Cocktail (Midazolam, Omeprazole, Warfarin, Caffeine, and Dextromethorphan in Healthy Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Chemotherapy-induced Nausea and Vomiting"
      ],
      "interventions": [
        {
          "name": "Rolapitant",
          "type": "DRUG"
        },
        {
          "name": "Digoxin",
          "type": "DRUG"
        },
        {
          "name": "Sulfasalazine",
          "type": "DRUG"
        },
        {
          "name": "Cooperstown Cocktail",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Tesaro, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 102,
      "start_date": "2015-05",
      "completion_date": "2015-08",
      "has_results": false,
      "last_update_posted_date": "2015-08-25",
      "last_synced_at": "2026-09-22T15:12:10.308Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02434861"
    },
    {
      "nct_id": "NCT03432793",
      "title": "Drug-Drug Interaction (DDI) Study for TD-9855",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Drug Drug Interaction (DDI)"
      ],
      "interventions": [
        {
          "name": "TD-9855",
          "type": "DRUG"
        },
        {
          "name": "Fluvoxamine",
          "type": "DRUG"
        },
        {
          "name": "Itraconazole",
          "type": "DRUG"
        },
        {
          "name": "Caffeine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Theravance Biopharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "19 Years to 55 Years · Male only"
      },
      "enrollment_count": 41,
      "start_date": "2018-02-28",
      "completion_date": "2018-04-21",
      "has_results": false,
      "last_update_posted_date": "2021-01-14",
      "last_synced_at": "2026-09-22T15:12:10.308Z",
      "location_count": 1,
      "location_summary": "Lincoln, Nebraska",
      "locations": [
        {
          "city": "Lincoln",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03432793"
    },
    {
      "nct_id": "NCT03333824",
      "title": "Effects of AZD1775 on the PK Substrates for CYP3A, CYP2C19, CYP1A2 and on QT Interval in Patients With Advanced Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Solid Tumours"
      ],
      "interventions": [
        {
          "name": "CYP1A2 (caffeine)",
          "type": "DRUG"
        },
        {
          "name": "CYP2C19 (omeprazole)",
          "type": "DRUG"
        },
        {
          "name": "CYP3A (midazolam)",
          "type": "DRUG"
        },
        {
          "name": "Kytril (granisetron)",
          "type": "DRUG"
        },
        {
          "name": "Wee-1 kinase inhibitor AZD1775",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 33,
      "start_date": "2017-12-01",
      "completion_date": "2019-01-22",
      "has_results": false,
      "last_update_posted_date": "2019-03-25",
      "last_synced_at": "2026-09-22T15:12:10.308Z",
      "location_count": 7,
      "location_summary": "Bingham Farms, Michigan • Detroit, Michigan • Lebanon, New Hampshire + 4 more",
      "locations": [
        {
          "city": "Bingham Farms",
          "state": "Michigan"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03333824"
    },
    {
      "nct_id": "NCT06215430",
      "title": "A Study of Effect of Multiple Doses of LOXO-305 on the Pharmacokinetics of Single Oral Doses of CYP1A2, CYP2C9, CYP2C19 Substrates in Healthy Participants",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Caffeine Tablet",
          "type": "DRUG"
        },
        {
          "name": "Omeprazole capsule",
          "type": "DRUG"
        },
        {
          "name": "Warfarin tablet",
          "type": "DRUG"
        },
        {
          "name": "Pirtobrutinib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eli Lilly and Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 16,
      "start_date": "2021-01-11",
      "completion_date": "2021-04-15",
      "has_results": true,
      "last_update_posted_date": "2025-03-10",
      "last_synced_at": "2026-09-22T15:12:10.308Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06215430"
    },
    {
      "nct_id": "NCT01596647",
      "title": "Pharmacokinetic Drug-drug Interaction Study of Dovitinib (TKI258) in Patients With Advanced Solid Tumors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Advanced Solid Tumors, Excluding Breast Cancer"
      ],
      "interventions": [
        {
          "name": "caffeine",
          "type": "DRUG"
        },
        {
          "name": "diclofenac",
          "type": "DRUG"
        },
        {
          "name": "omeprazole",
          "type": "DRUG"
        },
        {
          "name": "midazolam",
          "type": "DRUG"
        },
        {
          "name": "TKI258",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 39,
      "start_date": "2012-05",
      "completion_date": "2014-07",
      "has_results": false,
      "last_update_posted_date": "2020-12-21",
      "last_synced_at": "2026-09-22T15:12:10.308Z",
      "location_count": 5,
      "location_summary": "Kansas City, Kansas • Detroit, Michigan • Minneapolis, Minnesota + 2 more",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Las Vegas",
          "state": "Nevada"
        },
        {
          "city": "New Brunswick",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01596647"
    },
    {
      "nct_id": "NCT02168205",
      "title": "Food Effect and CYP1A2 Induction Study in Healthy Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "Pomalidomide",
          "type": "DRUG"
        },
        {
          "name": "Caffeine",
          "type": "OTHER"
        },
        {
          "name": "Tobacco",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Celgene",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 55,
      "start_date": "2014-05-30",
      "completion_date": "2014-09-19",
      "has_results": false,
      "last_update_posted_date": "2018-11-15",
      "last_synced_at": "2026-09-22T15:12:10.308Z",
      "location_count": 1,
      "location_summary": "Daytona Beach, Florida",
      "locations": [
        {
          "city": "Daytona Beach",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02168205"
    }
  ]
}