{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Systemic+Mastocytoses%2C+Indolent",
    "query": {
      "condition": "Systemic Mastocytoses, Indolent"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-21T23:53:44.434Z",
  "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": "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": "2026-05-21T23:53:44.434Z",
      "location_count": 1,
      "location_summary": "Chestnut Hill, Massachusetts",
      "locations": [
        {
          "city": "Chestnut Hill",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07264959"
    },
    {
      "nct_id": "NCT06915766",
      "title": "Expanded Access to Bezuclastinib for Patients With NonAdvanced Systemic Mastocytosis or Advanced Systemic Mastocytosis",
      "overall_status": "AVAILABLE",
      "study_type": "EXPANDED_ACCESS",
      "phases": [],
      "conditions": [
        "Systemic Mastocytoses, Indolent",
        "Systemic Mastocytoses, Aggressive"
      ],
      "interventions": [
        {
          "name": "Bezuclastinib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cogent Biosciences, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": null,
      "start_date": null,
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2026-05-08",
      "last_synced_at": "2026-05-21T23:53:44.434Z",
      "location_count": 20,
      "location_summary": "La Jolla, California • Los Angeles, California • Normal, Illinois + 14 more",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Normal",
          "state": "Illinois"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06915766"
    },
    {
      "nct_id": "NCT04910685",
      "title": "(HARBOR) Study to Evaluate Efficacy and Safety of BLU-263 Versus Placebo in Patients With Indolent Systemic Mastocytosis",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Indolent Systemic Mastocytosis",
        "Smoldering Systemic Mastocytosis"
      ],
      "interventions": [
        {
          "name": "Elenestinib",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "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": 534,
      "start_date": "2021-11-30",
      "completion_date": "2032-09-30",
      "has_results": false,
      "last_update_posted_date": "2026-04-20",
      "last_synced_at": "2026-05-21T23:53:44.434Z",
      "location_count": 14,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • Palo Alto, California + 11 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04910685"
    },
    {
      "nct_id": "NCT00814073",
      "title": "Masitinib in Severe Indolent or Smoldering Systemic Mastocytosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Indolent Systemic Mastocytosis"
      ],
      "interventions": [
        {
          "name": "Masitinib",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Best Supportive Care",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "AB Science",
      "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": 135,
      "start_date": "2008-12",
      "completion_date": "2015-11",
      "has_results": false,
      "last_update_posted_date": "2019-12-03",
      "last_synced_at": "2026-05-21T23:53:44.434Z",
      "location_count": 2,
      "location_summary": "Sacramento, California • Houston, Texas",
      "locations": [
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00814073"
    },
    {
      "nct_id": "NCT03731260",
      "title": "(PIONEER) Study to Evaluate Efficacy and Safety of Avapritinib (BLU-285), A Selective KIT Mutation-targeted Tyrosine Kinase Inhibitor, Versus Placebo in Patients With Indolent Systemic Mastocytosis",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Indolent Systemic Mastocytosis"
      ],
      "interventions": [
        {
          "name": "Avapritinib",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "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": 251,
      "start_date": "2019-04-16",
      "completion_date": "2027-06-23",
      "has_results": false,
      "last_update_posted_date": "2025-09-23",
      "last_synced_at": "2026-05-21T23:53:44.434Z",
      "location_count": 19,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Stanford, California + 15 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03731260"
    },
    {
      "nct_id": "NCT04655118",
      "title": "Study of TL-895 in Subjects With Myelofibrosis or Indolent Systemic Mastocytosis",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Myelofibrosis",
        "Indolent Systemic Mastocytosis"
      ],
      "interventions": [
        {
          "name": "TL-895",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Telios Pharma, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 121,
      "start_date": "2020-10-22",
      "completion_date": "2025-12-31",
      "has_results": false,
      "last_update_posted_date": "2024-05-10",
      "last_synced_at": "2026-05-21T23:53:44.434Z",
      "location_count": 6,
      "location_summary": "Aurora, Colorado • Rochester, Minnesota • Canton, Ohio + 3 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "Canton",
          "state": "Ohio"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04655118"
    },
    {
      "nct_id": "NCT02380222",
      "title": "Patient-Reported Outcome Questionnaire for Systemic Mastocytosis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Aggressive Systemic Mastocytosis (ASM)",
        "SM w Assoc Clonal Hema Non-mast Cell Lineage Disease (SM-AHNMD)",
        "Mast Cell Leukemia (MCL)",
        "Smoldering Systemic Mastocytosis (SSM)",
        "Indolent Systemic Mastocytosis (ISM) ISM Subgroup Fully Recruited"
      ],
      "interventions": [
        {
          "name": "Interview",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Adelphi Values LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 5,
      "start_date": "2014-07",
      "completion_date": "2015-12",
      "has_results": false,
      "last_update_posted_date": "2017-01-10",
      "last_synced_at": "2026-05-21T23:53:44.434Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02380222"
    },
    {
      "nct_id": "NCT03770273",
      "title": "Safety and Efficacy of Subcutaneous Sarilumab in Improving the Quality of Life in People With Indolent Systemic Mastocytosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Indolent Systemic Mastocytosis"
      ],
      "interventions": [
        {
          "name": "sarilumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 21,
      "start_date": "2019-06-19",
      "completion_date": "2023-07-31",
      "has_results": true,
      "last_update_posted_date": "2024-12-17",
      "last_synced_at": "2026-05-21T23:53:44.434Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03770273"
    },
    {
      "nct_id": "NCT05186753",
      "title": "(Summit) A Study to Evaluate the Efficacy and Safety of CGT9486 Versus Placebo in Patients With Indolent or Smoldering Systemic Mastocytosis",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "SSM",
        "Mastocytosis, Indolent",
        "Mastocytosis, Systemic",
        "Mastocytosis",
        "ISM",
        "BMM",
        "Smoldering Systemic Mastocytosis",
        "Bone Marrow Mastocytosis"
      ],
      "interventions": [
        {
          "name": "Bezuclastinib Tablets (Formulation A)",
          "type": "DRUG"
        },
        {
          "name": "Bezuclastinib Tablets (Formulation B)",
          "type": "DRUG"
        },
        {
          "name": "Placebo Tablets",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cogent Biosciences, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 237,
      "start_date": "2022-06-27",
      "completion_date": "2030-04",
      "has_results": false,
      "last_update_posted_date": "2026-03-04",
      "last_synced_at": "2026-05-21T23:53:44.434Z",
      "location_count": 24,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 20 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Clearwater",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05186753"
    },
    {
      "nct_id": "NCT02620254",
      "title": "Mast Cell Connect: A Registry for Patients With Mastocytosis",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Mastocytosis"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Blueprint Medicines Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 743,
      "start_date": "2015-11",
      "completion_date": "2021-01",
      "has_results": false,
      "last_update_posted_date": "2021-02-04",
      "last_synced_at": "2026-05-21T23:53:44.434Z",
      "location_count": 1,
      "location_summary": "Cambridge, Massachusetts",
      "locations": [
        {
          "city": "Cambridge",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02620254"
    }
  ]
}