{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=4+mL+injection+of+Ampion",
    "query": {
      "intervention": "4 mL injection of Ampion"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-20T23:57:13.153Z",
  "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": "NCT03988023",
      "title": "Study of Ampion for the Treatment of Pain and Function in Patients With Severe Osteoarthritis of the Knee.",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Severe Osteoarthritis of the Knee"
      ],
      "interventions": [
        {
          "name": "Ampion",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Saline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Ampio Pharmaceuticals. Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "40 Years to 85 Years"
      },
      "enrollment_count": 1043,
      "start_date": "2019-06-24",
      "completion_date": "2021-07-13",
      "has_results": true,
      "last_update_posted_date": "2022-10-05",
      "last_synced_at": "2026-09-20T23:57:13.153Z",
      "location_count": 1,
      "location_summary": "Englewood, Colorado",
      "locations": [
        {
          "city": "Englewood",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03988023"
    },
    {
      "nct_id": "NCT02556710",
      "title": "A Study to Evaluate the Efficacy & Safety of an Intra-Articular Ampion Injection for Pain of Osteoarthritis of the Knee",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Osteoarthritis of the Knee"
      ],
      "interventions": [
        {
          "name": "4 mL injection of AMPION™",
          "type": "BIOLOGICAL"
        },
        {
          "name": "4 mL injection of Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Ampio Pharmaceuticals. Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "40 Years to 85 Years"
      },
      "enrollment_count": 480,
      "start_date": "2015-09",
      "completion_date": "2016-06",
      "has_results": true,
      "last_update_posted_date": "2022-08-09",
      "last_synced_at": "2026-09-20T23:57:13.153Z",
      "location_count": 1,
      "location_summary": "Englewood, Colorado",
      "locations": [
        {
          "city": "Englewood",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02556710"
    },
    {
      "nct_id": "NCT03182686",
      "title": "AP-003-C Study to Confirm the Efficacy of Ampion™ in Adults With Pain Due to Severe Osteoarthritis of the Knee",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Osteoarthritis, Knee",
        "Knee Osteoarthritis",
        "Knee Arthritis",
        "Knee Pain Chronic"
      ],
      "interventions": [
        {
          "name": "4 mL injection of Ampion",
          "type": "BIOLOGICAL"
        },
        {
          "name": "4 mL Injection of Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Ampio Pharmaceuticals. Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "40 Years to 85 Years"
      },
      "enrollment_count": 168,
      "start_date": "2017-06-19",
      "completion_date": "2017-12-07",
      "has_results": true,
      "last_update_posted_date": "2022-08-09",
      "last_synced_at": "2026-09-20T23:57:13.153Z",
      "location_count": 13,
      "location_summary": "Birmingham, Alabama • Encinitas, California • Fullerton, California + 10 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Encinitas",
          "state": "California"
        },
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Thousand Oaks",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03182686"
    },
    {
      "nct_id": "NCT03349645",
      "title": "Open Label Extension to Assess the Safety of Long-Term Treatment With Ampion for Severe Osteoarthritis (OA) of the Knee",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Severe Osteoarthritis of the Knee"
      ],
      "interventions": [
        {
          "name": "4 mL injection of AMPION™",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Ampio Pharmaceuticals. Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "40 Years to 85 Years"
      },
      "enrollment_count": 94,
      "start_date": "2017-12-08",
      "completion_date": "2018-10-04",
      "has_results": true,
      "last_update_posted_date": "2022-10-03",
      "last_synced_at": "2026-09-20T23:57:13.153Z",
      "location_count": 11,
      "location_summary": "Birmingham, Alabama • Encinitas, California • Fullerton, California + 8 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Encinitas",
          "state": "California"
        },
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "Thousand Oaks",
          "state": "California"
        },
        {
          "city": "Marietta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03349645"
    },
    {
      "nct_id": "NCT02184156",
      "title": "A Study to Evaluate Safety of Three Intra-articular Injections of Ampion in the Knee of Adults With Osteoarthritis Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Osteoarthritis of the Knee"
      ],
      "interventions": [
        {
          "name": "4 mL injection of Ampion",
          "type": "BIOLOGICAL"
        },
        {
          "name": "4 mL injection of Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Ampio Pharmaceuticals. Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "40 Years to 85 Years"
      },
      "enrollment_count": 47,
      "start_date": "2014-06",
      "completion_date": "2015-10",
      "has_results": true,
      "last_update_posted_date": "2022-09-30",
      "last_synced_at": "2026-09-20T23:57:13.153Z",
      "location_count": 1,
      "location_summary": "Englewood, Colorado",
      "locations": [
        {
          "city": "Englewood",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02184156"
    },
    {
      "nct_id": "NCT02242435",
      "title": "A Multiple Injection Study Evaluating Safety and Efficacy of Ampion in Osteoarthritis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Osteoarthritis of the Knee"
      ],
      "interventions": [
        {
          "name": "4 mL injection of Ampion",
          "type": "BIOLOGICAL"
        },
        {
          "name": "4 mL Injection of Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Ampio Pharmaceuticals. Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "40 Years to 85 Years"
      },
      "enrollment_count": 342,
      "start_date": "2014-09",
      "completion_date": "2015-05",
      "has_results": true,
      "last_update_posted_date": "2022-09-15",
      "last_synced_at": "2026-09-20T23:57:13.153Z",
      "location_count": 1,
      "location_summary": "Englewood, Colorado",
      "locations": [
        {
          "city": "Englewood",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02242435"
    }
  ]
}