{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Pseudohypoparathyroidism",
    "query": {
      "condition": "Pseudohypoparathyroidism"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 12,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Pseudohypoparathyroidism&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-22T06:46:27.792Z",
  "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": "NCT04551170",
      "title": "Theophylline Treatment for Pseudohypoparathyroidism - Children 2-12 Years Old",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pseudohypoparathyroidism",
        "Albright Hereditary Osteodystrophy",
        "Pseudohypoparathyroidism Type 1a"
      ],
      "interventions": [
        {
          "name": "Theophylline",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "2 Years to 12 Years"
      },
      "enrollment_count": 34,
      "start_date": "2020-07-13",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-29",
      "last_synced_at": "2026-05-22T06:46:27.792Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04551170"
    },
    {
      "nct_id": "NCT00209235",
      "title": "Albright Hereditary Osteodystrophy: Natural History, Growth, and Cognitive/Behavioral Assessments",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pseudohypoparathyroidism Type 1A",
        "Albright Hereditary Osteodystrophy",
        "Pseudopseudohypoparathyroidism"
      ],
      "interventions": [
        {
          "name": "Neurocognitive and psychosocial testing",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Connecticut Children's Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Months",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "2 Months to 89 Years"
      },
      "enrollment_count": 600,
      "start_date": "2003-01",
      "completion_date": "2030-12",
      "has_results": false,
      "last_update_posted_date": "2025-05-28",
      "last_synced_at": "2026-05-22T06:46:27.792Z",
      "location_count": 1,
      "location_summary": "Hartford, Connecticut",
      "locations": [
        {
          "city": "Hartford",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00209235"
    },
    {
      "nct_id": "NCT04240821",
      "title": "Theophylline for Treatment of Pseudohypoparathyroidism",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pseudohypoparathyroidism",
        "Pseudohypoparathyroidism Type 1a",
        "Albright Hereditary Osteodystrophy"
      ],
      "interventions": [
        {
          "name": "Theophylline ER",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Jaclyn Tamaroff",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "2 Years to 99 Years"
      },
      "enrollment_count": 34,
      "start_date": "2020-05-22",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-28",
      "last_synced_at": "2026-05-22T06:46:27.792Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04240821"
    },
    {
      "nct_id": "NCT03718403",
      "title": "Effect of Theophylline in Pseudohypoparathyroidism",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "PHP Ia",
        "PHP IB",
        "Php1C"
      ],
      "interventions": [
        {
          "name": "Theophylline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "5 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "5 Years to 21 Years"
      },
      "enrollment_count": 100,
      "start_date": "2019-11-11",
      "completion_date": "2032-04-10",
      "has_results": false,
      "last_update_posted_date": "2022-07-22",
      "last_synced_at": "2026-05-22T06:46:27.792Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03718403"
    },
    {
      "nct_id": "NCT07496463",
      "title": "Setmelanotide to Treat Obesity in a Patient With Pseudohypoparathyroidism Type 1a (PHP1a)",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pseudohypoparathyroidism Type 1a",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Setmelanotide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 1,
      "start_date": "2026-04-01",
      "completion_date": "2026-10-01",
      "has_results": false,
      "last_update_posted_date": "2026-04-01",
      "last_synced_at": "2026-05-22T06:46:27.792Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07496463"
    },
    {
      "nct_id": "NCT02463409",
      "title": "Theophylline as a Treatment for Children With Pseudohypoparathyroidism Type 1a (Albright Hereditary Osteodystrophy)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pseudohypoparathyroidism Type 1a",
        "Albright Hereditary Osteodystrophy"
      ],
      "interventions": [
        {
          "name": "Theophylline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "10 Years to 21 Years"
      },
      "enrollment_count": 6,
      "start_date": "2015-06",
      "completion_date": "2016-10",
      "has_results": true,
      "last_update_posted_date": "2017-06-26",
      "last_synced_at": "2026-05-22T06:46:27.792Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02463409"
    },
    {
      "nct_id": "NCT04969926",
      "title": "Natural History Study of Parathyroid Disorders",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Parathyroid Cancer",
        "Primary Hyperparathyroidism",
        "Pseudohypoparathyroidism",
        "Inheritable Bone Diseases",
        "Multiple Endocrine Neoplasia, Type 1"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Months",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "6 Months to 100 Years"
      },
      "enrollment_count": 3000,
      "start_date": "2021-11-30",
      "completion_date": "2031-01-22",
      "has_results": false,
      "last_update_posted_date": "2026-05-12",
      "last_synced_at": "2026-05-22T06:46:27.792Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04969926"
    },
    {
      "nct_id": "NCT02411461",
      "title": "Early-onset Obesity and Cognitive Impairment in Children With Pseudohypoparathyroidism",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pseudohypoparathyroidism",
        "Albright Hereditary Osteodystrophy"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "6 Years to 18 Years"
      },
      "enrollment_count": 39,
      "start_date": "2014-12-01",
      "completion_date": "2017-01",
      "has_results": true,
      "last_update_posted_date": "2019-11-13",
      "last_synced_at": "2026-05-22T06:46:27.792Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02411461"
    },
    {
      "nct_id": "NCT03029429",
      "title": "Theophylline Treatment for Pseudohypoparathyroidism",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pseudohypoparathyroidism",
        "Albright Hereditary Osteodystrophy"
      ],
      "interventions": [
        {
          "name": "Theophylline",
          "type": "DRUG"
        },
        {
          "name": "Placebos",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "13 Years to 99 Years"
      },
      "enrollment_count": 29,
      "start_date": "2018-09-01",
      "completion_date": "2026-12-01",
      "has_results": false,
      "last_update_posted_date": "2026-04-29",
      "last_synced_at": "2026-05-22T06:46:27.792Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03029429"
    },
    {
      "nct_id": "NCT00001242",
      "title": "Studies of States With Resistance to Vitamin D and Parathyroid Hormone",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hypocalcemia",
        "Pseudohypoparathyroidism",
        "Osteomalacia",
        "Rickets",
        "Pseudopseudohpoparathyroidism"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Months",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "2 Months to 100 Years"
      },
      "enrollment_count": 70,
      "start_date": "1997-08-12",
      "completion_date": "2022-12-12",
      "has_results": false,
      "last_update_posted_date": "2023-01-20",
      "last_synced_at": "2026-05-22T06:46:27.792Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00001242"
    }
  ]
}