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ClinicalTrials.gov public records Last synced May 22, 2026, 5:21 AM EDT

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Showing 1–12 of 12 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Pseudohypoparathyroidism and Pseudopseudohypoparathyroidism Clear all
Active, not recruiting Phase 2 Interventional
View directory record Official record
Conditions
Pseudohypoparathyroidism, Albright Hereditary Osteodystrophy, Pseudohypoparathyroidism Type 1a
Interventions
Theophylline, Placebo
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
2 Years to 12 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced May 22, 2026, 5:21 AM EDT
Recruiting Not applicable Interventional
View directory record Official record
Conditions
Pseudohypoparathyroidism Type 1A, Albright Hereditary Osteodystrophy, Pseudopseudohypoparathyroidism
Interventions
Neurocognitive and psychosocial testing
Behavioral
Lead sponsor
Connecticut Children's Medical Center
Other
Eligibility
2 Months to 89 Years
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2030
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated May 27, 2025 · Synced May 22, 2026, 5:21 AM EDT
Enrolling by invitation Phase 2 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Pseudohypoparathyroidism, Pseudohypoparathyroidism Type 1a, Albright Hereditary Osteodystrophy
Interventions
Theophylline ER
Drug
Lead sponsor
Jaclyn Tamaroff
Other
Eligibility
2 Years to 99 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced May 22, 2026, 5:21 AM EDT
Recruiting Phase 4 Interventional
View directory record Official record
Conditions
PHP Ia, PHP IB, Php1C
Interventions
Theophylline
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
5 Years to 21 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2032
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 21, 2022 · Synced May 22, 2026, 5:21 AM EDT
Not yet recruiting Phase 2 Interventional
View directory record Official record
Conditions
Pseudohypoparathyroidism Type 1a, Obesity
Interventions
Setmelanotide
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
Not listed
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 31, 2026 · Synced May 22, 2026, 5:21 AM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Pseudohypoparathyroidism Type 1a, Albright Hereditary Osteodystrophy
Interventions
Theophylline
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
10 Years to 21 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 25, 2017 · Synced May 22, 2026, 5:21 AM EDT
Recruiting No phase listed Observational
View directory record Official record
Conditions
Parathyroid Cancer, Primary Hyperparathyroidism, Pseudohypoparathyroidism, Inheritable Bone Diseases, Multiple Endocrine Neoplasia, Type 1
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
6 Months to 100 Years
Enrollment
3,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2031
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced May 22, 2026, 5:21 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available
View directory record Official record
Conditions
Pseudohypoparathyroidism, Albright Hereditary Osteodystrophy
Interventions
Not listed
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
6 Years to 18 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 12, 2019 · Synced May 22, 2026, 5:21 AM EDT
Active, not recruiting Phase 2 Interventional
View directory record Official record
Conditions
Pseudohypoparathyroidism, Albright Hereditary Osteodystrophy
Interventions
Theophylline, Placebos
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
13 Years to 99 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced May 22, 2026, 5:21 AM EDT
Completed No phase listed Observational
View directory record Official record
Conditions
Hypocalcemia, Pseudohypoparathyroidism, Osteomalacia, Rickets, Pseudopseudohpoparathyroidism
Interventions
Not listed
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
2 Months to 100 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2022
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 19, 2023 · Synced May 22, 2026, 5:21 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Pseudohypoparathyroidism Type 1A, Albright Hereditary Osteodystrophy
Interventions
Not listed
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
5 Years to 45 Years
Enrollment
519 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2017
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 21, 2018 · Synced May 22, 2026, 5:21 AM EDT
Terminated No phase listed Observational
View directory record Official record
Conditions
Pseudohypoparathyroidism and Pseudopseudohypoparathyroidism, Pseudohypoparathyroidism Type Ia, Albright Hereditary Osteodystrophy
Interventions
Not listed
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
6 Years to 50 Years
Enrollment
14 participants
Timeline
2019 – 2021
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced May 22, 2026, 5:21 AM EDT