{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Masseter+Muscle+Prominence",
    "query": {
      "condition": "Masseter Muscle Prominence"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 4,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-23T08:04:53.811Z",
  "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": "NCT03861936",
      "title": "BOTOX® (onabotulinumtoxinA) Treatment of Masseter Muscle Prominence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Masseter Muscle Prominence"
      ],
      "interventions": [
        {
          "name": "OnabotulinumtoxinA",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Normal saline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Allergan",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 150,
      "start_date": "2019-05-16",
      "completion_date": "2020-07-02",
      "has_results": true,
      "last_update_posted_date": "2021-04-28",
      "last_synced_at": "2026-07-23T08:04:53.811Z",
      "location_count": 14,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • San Diego, California + 10 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03861936"
    },
    {
      "nct_id": "NCT01821534",
      "title": "Reliability of a Masseter Muscle Prominence Scale and Lower Facial Shape Classification",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "No Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Allergan",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 201,
      "start_date": "2013-03",
      "completion_date": "2013-05",
      "has_results": true,
      "last_update_posted_date": "2014-04-30",
      "last_synced_at": "2026-07-23T08:04:53.811Z",
      "location_count": 1,
      "location_summary": "Newport Beach, California",
      "locations": [
        {
          "city": "Newport Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01821534"
    },
    {
      "nct_id": "NCT06399718",
      "title": "A Study to Assess BOTOX Injections for the Change of Masseter Muscle Prominence in Adult Participants",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Masseter Muscle Prominence"
      ],
      "interventions": [
        {
          "name": "BOTOX",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AbbVie",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 207,
      "start_date": "2024-04-30",
      "completion_date": "2025-11-10",
      "has_results": false,
      "last_update_posted_date": "2025-11-17",
      "last_synced_at": "2026-07-23T08:04:53.811Z",
      "location_count": 20,
      "location_summary": "Los Angeles, California • Newport Beach, California • Vista, California + 14 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Newport Beach",
          "state": "California"
        },
        {
          "city": "Vista",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Boca Raton",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06399718"
    },
    {
      "nct_id": "NCT06387394",
      "title": "A Study to Assess BOTOX Injections in Adult Participants for the Change of Masseter Muscle Prominence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Masseter Muscle Prominence"
      ],
      "interventions": [
        {
          "name": "BOTOX",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AbbVie",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 202,
      "start_date": "2024-04-22",
      "completion_date": "2025-11-25",
      "has_results": false,
      "last_update_posted_date": "2025-12-11",
      "last_synced_at": "2026-07-23T08:04:53.811Z",
      "location_count": 20,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 17 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Santa Monica",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06387394"
    }
  ]
}