{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Challenge&page=31",
    "query": {
      "intervention": "Challenge",
      "page": 31
    },
    "page_size": 10
  },
  "pagination": {
    "page": 31,
    "page_size": 10,
    "total_count": 1539,
    "total_pages": 154,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Challenge&page=32&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Challenge&page=30&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-26T15:22:44.132Z",
  "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": "NCT06809179",
      "title": "A Clinical Trial to Assess the Efficacy, Safety, and Tolerability of a Repeat Dose of Fasedienol Nasal Spray for the Acute Treatment of Anxiety in Adults With Social Anxiety Disorder",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Social Anxiety Disorder"
      ],
      "interventions": [
        {
          "name": "Fasedienol Nasal Spray - Placebo Nasal Spray",
          "type": "DRUG"
        },
        {
          "name": "Fasedienol Nasal Spray - Fasedienol Nasal Spray",
          "type": "DRUG"
        },
        {
          "name": "Placebo Nasal Spray - Placebo Nasal Spray",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "VistaGen Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 60,
      "start_date": "2025-01-09",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-02-05",
      "last_synced_at": "2026-10-26T15:22:44.132Z",
      "location_count": 9,
      "location_summary": "Sherman Oaks, California • Walnut Creek, California • Largo, Florida + 6 more",
      "locations": [
        {
          "city": "Sherman Oaks",
          "state": "California"
        },
        {
          "city": "Walnut Creek",
          "state": "California"
        },
        {
          "city": "Largo",
          "state": "Florida"
        },
        {
          "city": "Saint Charles",
          "state": "Missouri"
        },
        {
          "city": "Toms River",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06809179"
    },
    {
      "nct_id": "NCT07786896",
      "title": "Evaluation of Dependence and Nicotine Replacement Therapy-Supported Cessation Efforts Among Regular Electronic Cigarette Use",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "E Cigarette Use",
        "Cessation, Tobacco",
        "Cessation, Nicotine"
      ],
      "interventions": [
        {
          "name": "Nicotine Replacement Therapies",
          "type": "DRUG"
        },
        {
          "name": "Brief Behavioral Counseling",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "West Virginia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2026-09-01",
      "completion_date": "2028-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-08-26",
      "last_synced_at": "2026-10-26T15:22:44.132Z",
      "location_count": 2,
      "location_summary": "Greenville, North Carolina • Morgantown, West Virginia",
      "locations": [
        {
          "city": "Greenville",
          "state": "North Carolina"
        },
        {
          "city": "Morgantown",
          "state": "West Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07786896"
    },
    {
      "nct_id": "NCT04542395",
      "title": "COVID-2019 Testing and Vaccination Among African American and Latinx Public Housing Residents",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Coronavirus"
      ],
      "interventions": [
        {
          "name": "Increasing Willingness and Uptake of COVID-19 Testing and Vaccination",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Charles Drew University of Medicine and Science",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2023-06-01",
      "completion_date": "2025-11-30",
      "has_results": false,
      "last_update_posted_date": "2022-08-19",
      "last_synced_at": "2026-10-26T15:22:44.132Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04542395"
    },
    {
      "nct_id": "NCT06736444",
      "title": "Brief Interventions to Reduce Comorbid Alcohol and Cannabis Misuse and Sleep Impairment in Young Adults (Rest-Up RCT)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Insomnia",
        "Alcohol Use",
        "Marijuana Use"
      ],
      "interventions": [
        {
          "name": "Brief Behavioral Therapy for Insomnia (BBTI)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Brief Alcohol Screening and Intervention for College Students (BASICS)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Attention Control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "29 Years",
        "sex": "ALL",
        "summary": "18 Years to 29 Years"
      },
      "enrollment_count": 800,
      "start_date": "2025-07-02",
      "completion_date": "2029-04-01",
      "has_results": false,
      "last_update_posted_date": "2026-04-14",
      "last_synced_at": "2026-10-26T15:22:44.132Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06736444"
    },
    {
      "nct_id": "NCT02138240",
      "title": "Sugar Champ: Pilot Social Network Intervention to Reduce Intake of Sugary Drinks",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Overweight and Obesity"
      ],
      "interventions": [
        {
          "name": "Social network intervention",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 34,
      "start_date": "2017-01-15",
      "completion_date": "2017-11-20",
      "has_results": true,
      "last_update_posted_date": "2019-07-09",
      "last_synced_at": "2026-10-26T15:22:44.132Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02138240"
    },
    {
      "nct_id": "NCT07745920",
      "title": "Managing Depressive Symptoms in ADPKD",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Autosomal Dominant Polycystic Kidney Disease"
      ],
      "interventions": [
        {
          "name": "Mayo Clinic-Approved Education",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Digital Neuropathy",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Capacity Coaching",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 105,
      "start_date": "2026-06-12",
      "completion_date": "2027-07-12",
      "has_results": false,
      "last_update_posted_date": "2026-08-07",
      "last_synced_at": "2026-10-26T15:22:44.132Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07745920"
    },
    {
      "nct_id": "NCT02021968",
      "title": "Evaluating the Safety and Effectiveness of a Dengue Virus Vaccine in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Dengue"
      ],
      "interventions": [
        {
          "name": "TetraVax-DV-TV003",
          "type": "BIOLOGICAL"
        },
        {
          "name": "rDEN2∆30-7169",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 48,
      "start_date": "2013-11",
      "completion_date": "2015-12",
      "has_results": false,
      "last_update_posted_date": "2015-12-15",
      "last_synced_at": "2026-10-26T15:22:44.132Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland • Burlington, Vermont",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02021968"
    },
    {
      "nct_id": "NCT06581224",
      "title": "Implementation of a Primary Hospital Provider (PHP) Team",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "High-need, High-complexity"
      ],
      "interventions": [
        {
          "name": "Primary Hospital Provider Team",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1200,
      "start_date": "2025-01-09",
      "completion_date": "2028-01",
      "has_results": false,
      "last_update_posted_date": "2026-01-26",
      "last_synced_at": "2026-10-26T15:22:44.132Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06581224"
    },
    {
      "nct_id": "NCT02932813",
      "title": "Translational Health After School Program on Health-Related Knowledge/Behaviors and Exercise Perception",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Changes in Physical Fitness",
        "Changes in Diet, Food, and Nutrition Habits",
        "Changes in Child Health"
      ],
      "interventions": [
        {
          "name": "THINK Program",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "8 Years to 12 Years"
      },
      "enrollment_count": 73,
      "start_date": "2017-01-30",
      "completion_date": "2017-05-30",
      "has_results": false,
      "last_update_posted_date": "2017-10-17",
      "last_synced_at": "2026-10-26T15:22:44.132Z",
      "location_count": 1,
      "location_summary": "Coral Gables, Florida",
      "locations": [
        {
          "city": "Coral Gables",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02932813"
    },
    {
      "nct_id": "NCT02840435",
      "title": "Study on Sit to Quit Phone Intervention",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Nicotine Dependence"
      ],
      "interventions": [
        {
          "name": "Sit to Quit",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Quit for Life",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 23,
      "start_date": "2016-09",
      "completion_date": "2018-06",
      "has_results": false,
      "last_update_posted_date": "2019-09-13",
      "last_synced_at": "2026-10-26T15:22:44.132Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02840435"
    }
  ]
}