{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Sodium+4-Phenylbutyrate",
    "query": {
      "intervention": "Sodium 4-Phenylbutyrate"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 40,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Sodium+4-Phenylbutyrate&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-29T11:31:04.128Z",
  "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": "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": "2026-09-29T11:31:04.128Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00004871"
    },
    {
      "nct_id": "NCT04516096",
      "title": "A Compassionate Use Protocol of AMX0035 for Treatment of Patients With Amyotrophic Lateral Sclerosis (ALS)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Amyotrophic Lateral Sclerosis"
      ],
      "interventions": [
        {
          "name": "AMX0035",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Amylyx Pharmaceuticals Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 28,
      "start_date": "2020-11-22",
      "completion_date": "2023-01-31",
      "has_results": false,
      "last_update_posted_date": "2023-04-07",
      "last_synced_at": "2026-09-29T11:31:04.128Z",
      "location_count": 5,
      "location_summary": "San Francisco, California • Boston, Massachusetts • Worcester, Massachusetts + 2 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Worcester",
          "state": "Massachusetts"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04516096"
    },
    {
      "nct_id": "NCT00528268",
      "title": "Study to Evaluate Sodium Phenylbutyrate in Pre-symptomatic Infants With Spinal Muscular Atrophy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Spinal Muscular Atrophy"
      ],
      "interventions": [
        {
          "name": "Sodium phenylbutyrate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Day",
        "maximum_age": "6 Months",
        "sex": "ALL",
        "summary": "1 Day to 6 Months"
      },
      "enrollment_count": 22,
      "start_date": "2007-07",
      "completion_date": "2013-12",
      "has_results": true,
      "last_update_posted_date": "2025-02-28",
      "last_synced_at": "2026-09-29T11:31:04.128Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00528268"
    },
    {
      "nct_id": "NCT00005934",
      "title": "5-Azacytidine and Phenylbutyrate to Treat Severe Thalassemia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Beta Thalassemia"
      ],
      "interventions": [
        {
          "name": "5-Azacytidine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 24,
      "start_date": "2000-06",
      "completion_date": "2003-06",
      "has_results": false,
      "last_update_posted_date": "2008-03-04",
      "last_synced_at": "2026-09-29T11:31:04.128Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00005934"
    },
    {
      "nct_id": "NCT05676034",
      "title": "AMX0035 in Adult Patients With Wolfram Syndrome",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Wolfram Syndrome"
      ],
      "interventions": [
        {
          "name": "AMX0035",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Amylyx Pharmaceuticals Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "17 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "17 Years and older"
      },
      "enrollment_count": 12,
      "start_date": "2023-03-03",
      "completion_date": "2028-05-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-14",
      "last_synced_at": "2026-09-29T11:31:04.128Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05676034"
    },
    {
      "nct_id": "NCT00002796",
      "title": "Phase I-II Study of Fluorouracil in Combination With Phenylbutyrate in Advanced Colorectal Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Mucinous Adenocarcinoma of the Colon",
        "Mucinous Adenocarcinoma of the Rectum",
        "Recurrent Colon Cancer",
        "Recurrent Rectal Cancer",
        "Signet Ring Adenocarcinoma of the Colon",
        "Signet Ring Adenocarcinoma of the Rectum",
        "Stage IVA Colon Cancer",
        "Stage IVA Rectal Cancer",
        "Stage IVB Colon Cancer",
        "Stage IVB Rectal Cancer"
      ],
      "interventions": [
        {
          "name": "fluorouracil",
          "type": "DRUG"
        },
        {
          "name": "sodium phenylbutyrate",
          "type": "DRUG"
        },
        {
          "name": "indomethacin",
          "type": "DRUG"
        },
        {
          "name": "recombinant interferon gamma",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 46,
      "start_date": "1997-05",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-02-01",
      "last_synced_at": "2026-09-29T11:31:04.128Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00002796"
    },
    {
      "nct_id": "NCT02246218",
      "title": "A Study of the Safety, Efficacy and Pharmacokinetics of Glycerol Phenylbutyrate in Pediatric Subjects Under 2 Years of Age With Urea Cycle Disorders",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Urea Cycle Disorder"
      ],
      "interventions": [
        {
          "name": "RAVICTI",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Amgen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Day",
        "maximum_age": "2 Years",
        "sex": "ALL",
        "summary": "1 Day to 2 Years"
      },
      "enrollment_count": 27,
      "start_date": "2014-12-31",
      "completion_date": "2017-07-17",
      "has_results": true,
      "last_update_posted_date": "2024-07-01",
      "last_synced_at": "2026-09-29T11:31:04.128Z",
      "location_count": 16,
      "location_summary": "Los Angeles, California • Palo Alto, California • Washington D.C., District of Columbia + 13 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Decatur",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02246218"
    },
    {
      "nct_id": "NCT02111200",
      "title": "Comparative Efficacy of Phenylbutyrate (PBA) vs. Benzoate in Urea Cycle Disorders",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Urea Cycle Disorders, Inborn"
      ],
      "interventions": [
        {
          "name": "Sodium Benzoate",
          "type": "DRUG"
        },
        {
          "name": "Sodium Phenylbutyrate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Baylor College of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 7,
      "start_date": "2014-09",
      "completion_date": "2015-10",
      "has_results": true,
      "last_update_posted_date": "2018-01-09",
      "last_synced_at": "2026-09-29T11:31:04.128Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02111200"
    },
    {
      "nct_id": "NCT03127514",
      "title": "AMX0035 in Patients With Amyotrophic Lateral Sclerosis (ALS)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Amyotrophic Lateral Sclerosis",
        "Motor Neuron Disease",
        "Neuromuscular Diseases",
        "Neurodegenerative Diseases",
        "Spinal Cord Diseases",
        "TDP-43 Proteinopathies",
        "Nervous System Diseases",
        "Central Nervous System Diseases"
      ],
      "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": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 137,
      "start_date": "2017-06-22",
      "completion_date": "2019-11-24",
      "has_results": true,
      "last_update_posted_date": "2024-05-16",
      "last_synced_at": "2026-09-29T11:31:04.128Z",
      "location_count": 25,
      "location_summary": "Phoenix, Arizona • Orange, California • San Francisco, California + 21 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03127514"
    },
    {
      "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": "2026-09-29T11:31:04.128Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00005639"
    }
  ]
}