{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=CYP2D6+Polymorphism",
    "query": {
      "condition": "CYP2D6 Polymorphism"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-27T05:35:46.471Z",
  "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": "NCT00900744",
      "title": "A Pilot Study of Varying Doses of Tamoxifen in the Setting of Genetic Polymorphisms of CYP2D6",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Tamoxifen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Icahn School of Medicine at Mount Sinai",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 121,
      "start_date": "2009-01",
      "completion_date": "2012-01",
      "has_results": false,
      "last_update_posted_date": "2017-08-25",
      "last_synced_at": "2026-06-27T05:35:46.471Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00900744"
    },
    {
      "nct_id": "NCT02664350",
      "title": "Precision Medicine Guided Treatment for Cancer Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pain",
        "CYP2D6 Polymorphism"
      ],
      "interventions": [
        {
          "name": "CYP2D6",
          "type": "GENETIC"
        },
        {
          "name": "Brief Pain Inventory-Short Form (BPI-SF)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "M.D. Anderson Symptom Inventory (MDASI)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "OPRM1",
          "type": "GENETIC"
        }
      ],
      "intervention_types": [
        "GENETIC",
        "BEHAVIORAL"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "18 Years to 120 Years"
      },
      "enrollment_count": 63,
      "start_date": "2016-04",
      "completion_date": "2019-01-10",
      "has_results": false,
      "last_update_posted_date": "2019-01-14",
      "last_synced_at": "2026-06-27T05:35:46.471Z",
      "location_count": 2,
      "location_summary": "Gainesville, Florida • Tampa, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02664350"
    },
    {
      "nct_id": "NCT02191358",
      "title": "YouScript IMPACT Registry",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Adverse Drug Events",
        "Adverse Drug Reactions",
        "Drug Interaction Potentiation",
        "Drug Metabolism, Poor, CYP2D6-RELATED",
        "Drug Metabolism, Poor, CYP2C19-RELATED",
        "Cytochrome P450 Enzyme Deficiency",
        "Cytochrome P450 CYP2D6 Enzyme Deficiency",
        "Cytochrome P450 CYP2C9 Enzyme Deficiency",
        "Cytochrome P450 CYP2C19 Enzyme Deficiency",
        "Cytochrome P450 CYP3A Enzyme Deficiency",
        "Poor Metabolizer Due to Cytochrome P450 CYP2C9 Variant",
        "Poor Metabolizer Due to Cytochrome P450 CYP2C19 Variant",
        "Poor Metabolizer Due to Cytochrome P450 CYP2D6 Variant"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Genelex Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 800,
      "start_date": "2014-10",
      "completion_date": "2015-08",
      "has_results": false,
      "last_update_posted_date": "2017-03-01",
      "last_synced_at": "2026-06-27T05:35:46.471Z",
      "location_count": 7,
      "location_summary": "Garden Grove, California • Denver, Colorado • Lexington, Kentucky + 3 more",
      "locations": [
        {
          "city": "Garden Grove",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Lexington",
          "state": "Kentucky"
        },
        {
          "city": "Towson",
          "state": "Maryland"
        },
        {
          "city": "Fall River",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02191358"
    },
    {
      "nct_id": "NCT03076021",
      "title": "Effects of Isotretinoin on CYP2D6 Activity",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "CYP2D6 Polymorphism"
      ],
      "interventions": [
        {
          "name": "Isotretinoin",
          "type": "DRUG"
        },
        {
          "name": "dextromethorphan",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 33,
      "start_date": "2016-07-26",
      "completion_date": "2023-11-27",
      "has_results": true,
      "last_update_posted_date": "2025-01-28",
      "last_synced_at": "2026-06-27T05:35:46.471Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03076021"
    },
    {
      "nct_id": "NCT02428660",
      "title": "Drug & Gene Interaction Risk Analysis With & Without Genetic Testing Among Patients Undergoing MTM",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "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",
        "Cytochrome P450 CYP2C9 Enzyme Deficiency",
        "Cytochrome P450 CYP2C19 Enzyme Deficiency",
        "Drug Metabolism, Poor, CYP2D6-RELATED",
        "Drug Metabolism, Poor, CYP2C19-RELATED",
        "CYP2D6 Polymorphism"
      ],
      "interventions": [
        {
          "name": "Pharmacogenetic testing",
          "type": "GENETIC"
        },
        {
          "name": "Software-based drug & gene interaction risk analysis",
          "type": "OTHER"
        },
        {
          "name": "MTM",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "GENETIC",
        "OTHER"
      ],
      "sponsor": "Genelex Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 341,
      "start_date": "2015-02",
      "completion_date": "2017-02",
      "has_results": false,
      "last_update_posted_date": "2017-02-23",
      "last_synced_at": "2026-06-27T05:35:46.471Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02428660"
    },
    {
      "nct_id": "NCT03117660",
      "title": "Effects of Retinoids on CYP2D6 Activity During Pregnancy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "CYP2D6 Polymorphism"
      ],
      "interventions": [
        {
          "name": "Vitamin A",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 82,
      "start_date": "2017-07-25",
      "completion_date": "2022-10-31",
      "has_results": false,
      "last_update_posted_date": "2022-11-04",
      "last_synced_at": "2026-06-27T05:35:46.471Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03117660"
    }
  ]
}