{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Phenylbutyrate&page=3",
    "query": {
      "intervention": "Phenylbutyrate",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 52,
    "total_pages": 6,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Phenylbutyrate&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Phenylbutyrate&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-08T21:52:45.422Z",
  "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": "NCT00947297",
      "title": "Study of the Safety of HPN (Hyperion)-100 for the Long-Term Treatment of Urea Cycle Disorders (Treat UCD)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Urea Cycle Disorders"
      ],
      "interventions": [
        {
          "name": "HPN-100",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Amgen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "6 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2009-11",
      "completion_date": "2011-11",
      "has_results": true,
      "last_update_posted_date": "2024-07-10",
      "last_synced_at": "2026-10-08T21:52:45.422Z",
      "location_count": 21,
      "location_summary": "Long Beach, California • Los Angeles, California • Stanford, California + 18 more",
      "locations": [
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00947297"
    },
    {
      "nct_id": "NCT03335488",
      "title": "Study of Glycerol Phenylbutyrate & Sodium Phenylbutyrate in Phenylbutyrate Naïve Patients With Urea Cycle Disorders (UCDs)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Urea Cycle Disorder"
      ],
      "interventions": [
        {
          "name": "RAVICTI",
          "type": "DRUG"
        },
        {
          "name": "NaPBA",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Amgen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "Up to 99 Years"
      },
      "enrollment_count": 16,
      "start_date": "2018-02-20",
      "completion_date": "2022-12-20",
      "has_results": true,
      "last_update_posted_date": "2024-07-01",
      "last_synced_at": "2026-10-08T21:52:45.422Z",
      "location_count": 6,
      "location_summary": "Gainesville, Florida • New York, New York • Cleveland, Ohio + 3 more",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03335488"
    },
    {
      "nct_id": "NCT00005639",
      "title": "Azacitidine Plus Phenylbutyrate in Treating Patients With Advanced or Metastatic Solid Tumors That Have Not Responded to Previous Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Lymphoma",
        "Small Intestine Cancer",
        "Unspecified Adult Solid Tumor, Protocol Specific"
      ],
      "interventions": [
        {
          "name": "Azacitidine Injection",
          "type": "DRUG"
        },
        {
          "name": "sodium phenylbutyrate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins",
      "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": 34,
      "start_date": "2000-03",
      "completion_date": "2005-07",
      "has_results": false,
      "last_update_posted_date": "2019-01-11",
      "last_synced_at": "2026-10-08T21:52:45.422Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00005639"
    },
    {
      "nct_id": "NCT06122662",
      "title": "AMX0035 and Progressive Supranuclear Palsy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Progressive Supranuclear Palsy",
        "PSP",
        "Neurodegenerative Diseases",
        "Atypical Parkinsonism"
      ],
      "interventions": [
        {
          "name": "AMX0035",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Amylyx Pharmaceuticals Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 139,
      "start_date": "2023-12-21",
      "completion_date": "2025-10-21",
      "has_results": false,
      "last_update_posted_date": "2026-04-30",
      "last_synced_at": "2026-10-08T21:52:45.422Z",
      "location_count": 35,
      "location_summary": "Scottsdale, Arizona • Little Rock, Arkansas • Fountain Valley, California + 31 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06122662"
    },
    {
      "nct_id": "NCT00439218",
      "title": "Clinical Trial of Sodium Phenylbutyrate in Children With Spinal Muscular Atrophy Type I",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Spinal Muscular Atrophy Type I"
      ],
      "interventions": [
        {
          "name": "sodium phenylbutyrate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Westat",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Months",
        "maximum_age": "48 Months",
        "sex": "ALL",
        "summary": "2 Months to 48 Months"
      },
      "enrollment_count": 5,
      "start_date": "2008-01",
      "completion_date": "2009-05",
      "has_results": true,
      "last_update_posted_date": "2010-11-09",
      "last_synced_at": "2026-10-08T21:52:45.422Z",
      "location_count": 5,
      "location_summary": "Stanford, California • Boston, Massachusetts • New York, New York + 2 more",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00439218"
    },
    {
      "nct_id": "NCT00004871",
      "title": "Azacitidine Plus Phenylbutyrate in Treating Patients With Acute Myeloid Leukemia or Myelodysplastic Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Leukemia",
        "Myelodysplastic Syndromes",
        "Myelodysplastic/Myeloproliferative Diseases"
      ],
      "interventions": [
        {
          "name": "azacitidine",
          "type": "DRUG"
        },
        {
          "name": "sodium phenylbutyrate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": null,
      "start_date": "2000-05",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2010-03-10",
      "last_synced_at": "2026-10-08T21:52:45.422Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00004871"
    },
    {
      "nct_id": "NCT04041232",
      "title": "PBA Use for Treatment of ATF6-/- Patients",
      "overall_status": "SUSPENDED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "ACHROMATOPSIA 7",
        "Achromatopsia"
      ],
      "interventions": [
        {
          "name": "PBA",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2,
      "start_date": "2025-04-08",
      "completion_date": "2027-08",
      "has_results": false,
      "last_update_posted_date": "2026-09-11",
      "last_synced_at": "2026-10-08T21:52:45.422Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04041232"
    },
    {
      "nct_id": "NCT06773026",
      "title": "Study of Sodium Phenylbutyrate (ACER-001) for the Treatment of Pediatric and Adults Patients With Medium Chain Acyl-CoA Dehydrogenase Deficiency (MCADD)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Medium-chain Acyl-CoA Dehydrogenase Deficiency"
      ],
      "interventions": [
        {
          "name": "Sodium phenylbutyrate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Jerry Vockley, MD, PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "4 Years and older"
      },
      "enrollment_count": 24,
      "start_date": "2025-06-30",
      "completion_date": "2027-07",
      "has_results": false,
      "last_update_posted_date": "2026-06-08",
      "last_synced_at": "2026-10-08T21:52:45.422Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06773026"
    },
    {
      "nct_id": "NCT00387530",
      "title": "Phenylbutyrate and Valganciclovir in Treating Patients With Relapsed or Refractory Epstein-Barr Virus-Positive Cancer",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Gastric Cancer",
        "Head and Neck Cancer",
        "Lymphoma",
        "Lymphoproliferative Disorder"
      ],
      "interventions": [
        {
          "name": "oral sodium phenylbutyrate",
          "type": "DRUG"
        },
        {
          "name": "valganciclovir",
          "type": "DRUG"
        },
        {
          "name": "polymerase chain reaction",
          "type": "GENETIC"
        },
        {
          "name": "protein expression analysis",
          "type": "GENETIC"
        },
        {
          "name": "biopsy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "GENETIC",
        "PROCEDURE"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2006-05",
      "completion_date": "2008-01",
      "has_results": false,
      "last_update_posted_date": "2019-08-02",
      "last_synced_at": "2026-10-08T21:52:45.422Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00387530"
    },
    {
      "nct_id": "NCT04421677",
      "title": "Safety and Tolerability of Phenylbutyrate in Inclusion Body Myositis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Inclusion Body Myositis",
        "Sporadic Inclusion Body Myositis"
      ],
      "interventions": [
        {
          "name": "Phenylbutyrate Oral Tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Kansas Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2020-08-20",
      "completion_date": "2022-01-20",
      "has_results": false,
      "last_update_posted_date": "2024-09-19",
      "last_synced_at": "2026-10-08T21:52:45.422Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04421677"
    }
  ]
}