{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Negative+Symptoms+of+Schizophrenia",
    "query": {
      "condition": "Negative Symptoms of Schizophrenia"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 57,
    "total_pages": 6,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Negative+Symptoms+of+Schizophrenia&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-26T07:01:13.963Z",
  "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": "NCT00616798",
      "title": "A Study of RO4917838 in Combination With Antipsychotic Treatment in Patients With Schizophrenia.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Schizophrenia"
      ],
      "interventions": [
        {
          "name": "RO4917838",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Standard antipsychotic therapy",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hoffmann-La Roche",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 323,
      "start_date": "2008-03",
      "completion_date": "2010-02",
      "has_results": false,
      "last_update_posted_date": "2014-06-24",
      "last_synced_at": "2026-06-26T07:01:13.963Z",
      "location_count": 14,
      "location_summary": "Granada Hills, California • Los Angeles, California • Oceanside, California + 10 more",
      "locations": [
        {
          "city": "Granada Hills",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Oceanside",
          "state": "California"
        },
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00616798"
    },
    {
      "nct_id": "NCT02477670",
      "title": "Efficacy, Safety, and Tolerability of AVP-786 for the Treatment of Residual Schizophrenia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Schizophrenia"
      ],
      "interventions": [
        {
          "name": "AVP-786",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Otsuka Pharmaceutical Development & Commercialization, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 145,
      "start_date": "2015-09-01",
      "completion_date": "2017-07-21",
      "has_results": true,
      "last_update_posted_date": "2026-05-13",
      "last_synced_at": "2026-06-26T07:01:13.963Z",
      "location_count": 17,
      "location_summary": "Cerritos, California • Garden Grove, California • National City, California + 14 more",
      "locations": [
        {
          "city": "Cerritos",
          "state": "California"
        },
        {
          "city": "Garden Grove",
          "state": "California"
        },
        {
          "city": "National City",
          "state": "California"
        },
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02477670"
    },
    {
      "nct_id": "NCT01568229",
      "title": "20110165: Study to Evaluate the Effect of AMG 747 on Schizophrenia Negative Symptoms (Study 165)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Schizophrenia"
      ],
      "interventions": [
        {
          "name": "AMG 747",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Amgen",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 111,
      "start_date": "2012-05",
      "completion_date": "2013-08",
      "has_results": false,
      "last_update_posted_date": "2014-10-01",
      "last_synced_at": "2026-06-26T07:01:13.963Z",
      "location_count": 17,
      "location_summary": "Little Rock, Arkansas • Springdale, Arkansas • Long Beach, California + 14 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Springdale",
          "state": "Arkansas"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Oakland",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01568229"
    },
    {
      "nct_id": "NCT02970305",
      "title": "Efficacy and Safety of Pimavanserin as Adjunctive Treatment for the Negative Symptoms of Schizophrenia (ADVANCE)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Schizophrenia"
      ],
      "interventions": [
        {
          "name": "Pimavanserin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "ACADIA Pharmaceuticals Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 403,
      "start_date": "2016-11-04",
      "completion_date": "2019-10-28",
      "has_results": true,
      "last_update_posted_date": "2020-12-22",
      "last_synced_at": "2026-06-26T07:01:13.963Z",
      "location_count": 33,
      "location_summary": "Phoenix, Arizona • Rogers, Arkansas • Bellflower, California + 27 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Rogers",
          "state": "Arkansas"
        },
        {
          "city": "Bellflower",
          "state": "California"
        },
        {
          "city": "Lemon Grove",
          "state": "California"
        },
        {
          "city": "Norwalk",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02970305"
    },
    {
      "nct_id": "NCT01488929",
      "title": "Efficacy, Safety, and Tolerability of TC-5619 as Augmentation Therapy to Improve Negative Symptoms and Cognition in Outpatients With Schizophrenia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Schizophrenia",
        "Negative Symptoms",
        "Cognitive Dysfunction"
      ],
      "interventions": [
        {
          "name": "TC-5619",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Targacept 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": 603,
      "start_date": "2011-12",
      "completion_date": "2013-11",
      "has_results": false,
      "last_update_posted_date": "2015-06-03",
      "last_synced_at": "2026-06-26T07:01:13.963Z",
      "location_count": 22,
      "location_summary": "Garden Grove, California • Glendale, California • Long Beach, California + 19 more",
      "locations": [
        {
          "city": "Garden Grove",
          "state": "California"
        },
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "National City",
          "state": "California"
        },
        {
          "city": "Oceanside",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01488929"
    },
    {
      "nct_id": "NCT06653829",
      "title": "NST-SPARK: Preliminary Study of an Augmented Reality (AR) App Delivering Recovery-Oriented Cognitive Therapy for Negative Symptoms in Schizophrenia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Negative Symptoms in Schizophrenia",
        "Schizophrenia",
        "Schizoaffective Disorder"
      ],
      "interventions": [
        {
          "name": "SPARK",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "North Shore 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": 20,
      "start_date": "2023-11-06",
      "completion_date": "2024-08-31",
      "has_results": false,
      "last_update_posted_date": "2024-10-22",
      "last_synced_at": "2026-06-26T07:01:13.963Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06653829"
    },
    {
      "nct_id": "NCT00237809",
      "title": "D-Serine Treatment of Negative Symptoms and Cognitive Deficits in Schizophrenia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Schizophrenia",
        "Schizoaffective Disorder"
      ],
      "interventions": [
        {
          "name": "D-serine",
          "type": "DRUG"
        },
        {
          "name": "Cognitive Retraining (CRT)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Cognitive Retraining Placebo",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 104,
      "start_date": "2002-09",
      "completion_date": "2012-09",
      "has_results": true,
      "last_update_posted_date": "2017-05-10",
      "last_synced_at": "2026-06-26T07:01:13.963Z",
      "location_count": 2,
      "location_summary": "New Haven, Connecticut • West Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "West Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00237809"
    },
    {
      "nct_id": "NCT00222794",
      "title": "A Clinical Trial to Examine Effects of Atomoxetine in the Treatment of Negative Symptoms in Patients With Schizophrenia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Schizophrenia",
        "Schizoaffective Disorder"
      ],
      "interventions": [
        {
          "name": "Atomoxetine (Strattera)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 66,
      "start_date": "2003-11",
      "completion_date": "2006-07",
      "has_results": false,
      "last_update_posted_date": "2010-08-31",
      "last_synced_at": "2026-06-26T07:01:13.963Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00222794"
    },
    {
      "nct_id": "NCT00177580",
      "title": "Improving Symptoms of Schizophrenia and Schizoaffective Disorder by Supplementing Medications With Pravastatin",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Schizophrenia",
        "Schizoaffective Disorder"
      ],
      "interventions": [
        {
          "name": "Pravastatin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 72,
      "start_date": "2003-07",
      "completion_date": "2007-07",
      "has_results": false,
      "last_update_posted_date": "2008-01-15",
      "last_synced_at": "2026-06-26T07:01:13.963Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00177580"
    },
    {
      "nct_id": "NCT00546403",
      "title": "Modafinil Augmentation Therapy for Excessive Daytime Sleepiness and Negative Symptoms in Patients With Schizophrenia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Schizophrenia"
      ],
      "interventions": [
        {
          "name": "Modafinil",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Veterans Medical Research Foundation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "MALE",
        "summary": "18 Years to 65 Years · Male only"
      },
      "enrollment_count": 26,
      "start_date": "2003-02",
      "completion_date": "2008-02",
      "has_results": false,
      "last_update_posted_date": "2009-02-24",
      "last_synced_at": "2026-06-26T07:01:13.963Z",
      "location_count": 1,
      "location_summary": "San Diego, California",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00546403"
    }
  ]
}