{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Mast+Cell+Disorder",
    "query": {
      "condition": "Mast Cell Disorder"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 94,
    "total_pages": 10,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Mast+Cell+Disorder&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T05:38:27.197Z",
  "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": "NCT00050193",
      "title": "Cause and Natural Course of Pediatric-Onset Mastocytosis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Mastocytosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "Up to 21 Years"
      },
      "enrollment_count": 103,
      "start_date": "2002-11-22",
      "completion_date": "2014-03-10",
      "has_results": false,
      "last_update_posted_date": "2019-12-17",
      "last_synced_at": "2026-05-22T05:38:27.197Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00050193"
    },
    {
      "nct_id": "NCT04681105",
      "title": "Flotetuzumab for the Treatment of Relapsed or Refractory Advanced CD123-Positive Hematological Malignancies",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Recurrent Acute Leukemia",
        "Recurrent B Acute Lymphoblastic Leukemia",
        "Recurrent Blastic Plasmacytoid Dendritic Cell Neoplasm",
        "Recurrent Chronic Myelogenous Leukemia, BCR-ABL1 Positive",
        "Recurrent Hairy Cell Leukemia",
        "Recurrent Hematologic Malignancy",
        "Recurrent Hodgkin Lymphoma",
        "Recurrent T Acute Lymphoblastic Leukemia",
        "Refractory Acute Leukemia",
        "Refractory B Acute Lymphoblastic Leukemia",
        "Refractory Blastic Plasmacytoid Dendritic Cell Neoplasm",
        "Refractory Chronic Myelogenous Leukemia, BCR-ABL1 Positive",
        "Refractory Hairy Cell Leukemia",
        "Refractory Hematologic Malignancy",
        "Refractory Hodgkin Lymphoma",
        "Refractory T Acute Lymphoblastic Leukemia",
        "Systemic Mastocytosis"
      ],
      "interventions": [
        {
          "name": "Acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "Dexamethasone",
          "type": "DRUG"
        },
        {
          "name": "Diphenhydramine",
          "type": "DRUG"
        },
        {
          "name": "Flotetuzumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Ibuprofen",
          "type": "DRUG"
        },
        {
          "name": "Ranitidine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "City of Hope Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 13,
      "start_date": "2020-11-18",
      "completion_date": "2025-08-05",
      "has_results": false,
      "last_update_posted_date": "2026-01-28",
      "last_synced_at": "2026-05-22T05:38:27.197Z",
      "location_count": 1,
      "location_summary": "Duarte, California",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04681105"
    },
    {
      "nct_id": "NCT01137825",
      "title": "Registry of Older Patients With Cancer",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Chronic Myeloproliferative Disorders",
        "Cognitive/Functional Effects",
        "Leukemia",
        "Lymphoma",
        "Lymphoproliferative Disorder",
        "Multiple Myeloma and Plasma Cell Neoplasm",
        "Myelodysplastic Syndromes",
        "Myelodysplastic/Myeloproliferative Neoplasms",
        "Unspecified Adult Solid Tumor, Protocol Specific"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "UNC Lineberger Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 3000,
      "start_date": "2009-09",
      "completion_date": "2030-12",
      "has_results": false,
      "last_update_posted_date": "2025-06-25",
      "last_synced_at": "2026-05-22T05:38:27.197Z",
      "location_count": 7,
      "location_summary": "Boone, North Carolina • Chapel Hill, North Carolina • Greenville, North Carolina + 4 more",
      "locations": [
        {
          "city": "Boone",
          "state": "North Carolina"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "Greenville",
          "state": "North Carolina"
        },
        {
          "city": "Hendersonville",
          "state": "North Carolina"
        },
        {
          "city": "Morehead City",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01137825"
    },
    {
      "nct_id": "NCT00376922",
      "title": "Music in Reducing Anxiety and Pain in Adult Patients Undergoing Bone Marrow Biopsy for Hematologic Cancers or Other Diseases",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Myeloproliferative Disorders",
        "Leukemia",
        "Lymphoma",
        "Lymphoproliferative Disorder",
        "Multiple Myeloma and Plasma Cell Neoplasm",
        "Myelodysplastic Syndromes",
        "Myelodysplastic/Myeloproliferative Neoplasms",
        "Pain",
        "Precancerous Condition",
        "Psychosocial Effects of Cancer and Its Treatment"
      ],
      "interventions": [
        {
          "name": "music therapy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "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": 65,
      "start_date": "2006-06",
      "completion_date": "2010-05",
      "has_results": false,
      "last_update_posted_date": "2017-05-30",
      "last_synced_at": "2026-05-22T05:38:27.197Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00376922"
    },
    {
      "nct_id": "NCT01384513",
      "title": "A Two-Step Approach to Reduced Intensity Bone Marrow Transplant for Patients With Hematological Malignancies",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Adult Acute Lymphoblastic Leukemia in Remission",
        "Adult Acute Myeloid Leukemia in Remission",
        "Adult Acute Myeloid Leukemia With 11q23 (MLL) Abnormalities",
        "Adult Acute Myeloid Leukemia With Del(5q)",
        "Adult Acute Myeloid Leukemia With Inv(16)(p13;q22)",
        "Adult Acute Myeloid Leukemia With t(15;17)(q22;q12)",
        "Adult Acute Myeloid Leukemia With t(16;16)(p13;q22)",
        "Adult Acute Myeloid Leukemia With t(8;21)(q22;q22)",
        "Adult Nasal Type Extranodal NK/T-cell Lymphoma",
        "Aplastic Anemia",
        "Childhood Acute Lymphoblastic Leukemia in Remission",
        "Childhood Acute Myeloid Leukemia in Remission",
        "Childhood Myelodysplastic Syndromes",
        "Chronic Eosinophilic Leukemia",
        "Chronic Myelomonocytic Leukemia",
        "Chronic Neutrophilic Leukemia",
        "Essential Thrombocythemia",
        "Extranodal Marginal Zone B-cell Lymphoma of Mucosa-associated Lymphoid Tissue",
        "Juvenile Myelomonocytic Leukemia",
        "Mastocytosis",
        "Myelodysplastic/Myeloproliferative Neoplasm, Unclassifiable",
        "Nodal Marginal Zone B-cell Lymphoma",
        "Polycythemia Vera",
        "Previously Treated Myelodysplastic Syndromes",
        "Primary Myelofibrosis",
        "Recurrent Adult Acute Lymphoblastic Leukemia",
        "Recurrent Adult Acute Myeloid Leukemia",
        "Recurrent Adult Diffuse Small Cleaved Cell Lymphoma",
        "Recurrent Adult Grade III Lymphomatoid Granulomatosis",
        "Recurrent Adult Hodgkin Lymphoma",
        "Recurrent Childhood Acute Lymphoblastic Leukemia",
        "Recurrent Childhood Acute Myeloid Leukemia",
        "Recurrent Cutaneous T-cell Non-Hodgkin Lymphoma",
        "Recurrent Grade 1 Follicular Lymphoma",
        "Recurrent Grade 2 Follicular Lymphoma",
        "Recurrent Marginal Zone Lymphoma",
        "Recurrent Mycosis Fungoides/Sezary Syndrome",
        "Recurrent Small Lymphocytic Lymphoma",
        "Recurrent/Refractory Childhood Hodgkin Lymphoma",
        "Refractory Anemia",
        "Refractory Anemia With Ringed Sideroblasts",
        "Refractory Hairy Cell Leukemia",
        "Refractory Multiple Myeloma",
        "Secondary Myelodysplastic Syndromes",
        "Splenic Marginal Zone Lymphoma",
        "T-cell Large Granular Lymphocyte Leukemia",
        "Waldenström Macroglobulinemia"
      ],
      "interventions": [
        {
          "name": "Fludarabine",
          "type": "DRUG"
        },
        {
          "name": "Busulfan",
          "type": "DRUG"
        },
        {
          "name": "Total Body Irradiation (TBI)",
          "type": "RADIATION"
        },
        {
          "name": "Donor Lymphocyte Infusion (DLI)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Cyclophosphamide (CY)",
          "type": "DRUG"
        },
        {
          "name": "Tacrolimus",
          "type": "DRUG"
        },
        {
          "name": "Mycophenolate mofetil",
          "type": "DRUG"
        },
        {
          "name": "Allogeneic hematopoietic stem cell transplantation",
          "type": "DEVICE"
        },
        {
          "name": "Peripheral blood stem cell transplantation (PBSCT)",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION",
        "BIOLOGICAL",
        "DEVICE",
        "PROCEDURE"
      ],
      "sponsor": "Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2011-08-04",
      "completion_date": "2022-11-16",
      "has_results": true,
      "last_update_posted_date": "2026-04-15",
      "last_synced_at": "2026-05-22T05:38:27.197Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01384513"
    },
    {
      "nct_id": "NCT00467792",
      "title": "Natural History of Urticaria Pigmentosa in Children",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Urticaria Pigmentosa"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Medical College of Wisconsin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "Up to 18 Years"
      },
      "enrollment_count": 47,
      "start_date": "2006-01",
      "completion_date": "2008-06",
      "has_results": false,
      "last_update_posted_date": "2008-12-08",
      "last_synced_at": "2026-05-22T05:38:27.197Z",
      "location_count": 1,
      "location_summary": "Milwaukee, Wisconsin",
      "locations": [
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00467792"
    },
    {
      "nct_id": "NCT05652907",
      "title": "Safety and Efficacy of FSD201 for the Treatment of Chronic Pain Associated With Idiopathic MCAS (MCAD)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Mast Cell Activation Syndrome",
        "Mast Cell Activation Disorder Idiopathic"
      ],
      "interventions": [
        {
          "name": "FSD201",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Quantum Biopharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 2,
      "start_date": "2023-01-19",
      "completion_date": "2023-05-24",
      "has_results": true,
      "last_update_posted_date": "2026-04-21",
      "last_synced_at": "2026-05-22T05:38:27.197Z",
      "location_count": 2,
      "location_summary": "Weldon Spring, Missouri • New York, New York",
      "locations": [
        {
          "city": "Weldon Spring",
          "state": "Missouri"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05652907"
    },
    {
      "nct_id": "NCT07264959",
      "title": "An Observational Study in Participants With Indolent Systemic Mastocytosis (ISM)",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Indolent Systemic Mastocytosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Blueprint Medicines Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 150,
      "start_date": "2026-04-15",
      "completion_date": "2032-12-01",
      "has_results": false,
      "last_update_posted_date": "2026-04-22",
      "last_synced_at": "2026-05-22T05:38:27.197Z",
      "location_count": 1,
      "location_summary": "Chestnut Hill, Massachusetts",
      "locations": [
        {
          "city": "Chestnut Hill",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07264959"
    },
    {
      "nct_id": "NCT04806620",
      "title": "Unhide® Project: A Digital Health Platform to Collect Lifestyle Data for Brain Inflammation Research",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Post-Acute COVID-19 Syndrome",
        "ME/CFS",
        "Rheumatic Arthritis",
        "Juvenile Rheumatoid Arthritis (JRA)",
        "Psoriatic Arthritis (PsA)",
        "Ankylosing Spondylitis (AS)",
        "Autoimmune Encephalitis",
        "Celiac Disease",
        "Celiac Disease in Children",
        "Chronic Lyme Disease",
        "Post-treatment Lyme Disease Syndrome",
        "Crohn's Disease",
        "Dysautonomia",
        "Anorexia Nervosa",
        "Bulimia Nervosa",
        "ARFID",
        "Avoidant / Restrictive Food Intake Disorder",
        "Ehlers Danlos Syndrome",
        "Endometriosis",
        "Fibromyalgia (FM)",
        "Long COVID",
        "Lupus",
        "Migraines",
        "Mast Cell Activation Syndrome",
        "Multiple Sclerosis",
        "Myalgic Encephalomyelitis (ME)",
        "Myasthenia Gravis, Generalized",
        "Myasthenia Gravis in Children",
        "Narcolepsy",
        "Obsessive Compulsive Disorder (OCD)",
        "PANDAS",
        "Pediatric Acute-onset Neuropsychiatric Syndrome (PANS)",
        "POTS - Postural Orthostatic Tachycardia Syndrome",
        "General Anxiety Disorder, Social Anxiety Disorder",
        "PTSD - Post Traumatic Stress Disorder",
        "Psoriasis",
        "Traumatic Brain Injury",
        "Tourette's Syndrome",
        "Inflammatory Bowel Disease (IBD)",
        "Autoimmune Diseases",
        "Neurological Diseases or Conditions",
        "Psychiatric Disorder",
        "Sjogren's Syndrome",
        "Ulcerative Colitis and Crohn's Disease"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Brain Inflammation Collaborative",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "2 Years and older"
      },
      "enrollment_count": 10000,
      "start_date": "2023-07-05",
      "completion_date": "2030-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-01-22",
      "last_synced_at": "2026-05-22T05:38:27.197Z",
      "location_count": 1,
      "location_summary": "Delafield, Wisconsin",
      "locations": [
        {
          "city": "Delafield",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04806620"
    },
    {
      "nct_id": "NCT03214666",
      "title": "GTB-3550 Tri-Specific Killer Engager (TriKE®) for High Risk Hematological Malignancies",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "High-risk Myelodysplastic Syndromes",
        "Acute Myelogenous Leukemia",
        "Systemic Mastocytosis",
        "Mast Cell Leukemia"
      ],
      "interventions": [
        {
          "name": "GTB-3550 TriKE® Phase I",
          "type": "DRUG"
        },
        {
          "name": "GTB-3550 TriKE® Phase II",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GT Biopharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 12,
      "start_date": "2020-01-01",
      "completion_date": "2021-09-29",
      "has_results": true,
      "last_update_posted_date": "2022-11-10",
      "last_synced_at": "2026-05-22T05:38:27.197Z",
      "location_count": 2,
      "location_summary": "Minneapolis, Minnesota • Madison, Wisconsin",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        },
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03214666"
    }
  ]
}