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ClinicalTrials.gov public records Last synced Oct 20, 2026, 5:35 PM EDT

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Showing 1–24 of 59 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Hyperphosphatemia Clear all
Suspended Phase 3 Interventional

Study to Evaluate the Safety and Tolerability of Ferric Citrate in Children With Hyperphosphatemia Related to Chronic Kidney Disease

NCT04523727
View directory record Official record
Conditions
Hyperphosphatemia Related to Chronic Kidney Disease
Interventions
ferric citrate
Drug
Lead sponsor
Keryx Biopharmaceuticals
Industry
Eligibility
6 Years to 16 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
14
States / cities
Birmingham, Alabama • Phoenix, Arizona • San Francisco, California + 11 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2026 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Not applicable Interventional

Phosphate Kinetic Modeling

NCT01003223
View directory record Official record
Conditions
End Stage Renal Disease, Hyperphosphatemia
Interventions
Computer algorithm management of hyperphosphatemia
Other
Lead sponsor
Fresenius Medical Care North America
Industry
Eligibility
18 Years and older
Enrollment
190 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Waltham, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 18, 2014 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 4 Interventional Results available

A Long-Term Study of Tenapanor Alone or in Combination With Sevelamer in Patients With CKD on Dialysis and HP

NCT03988920
View directory record Official record
Conditions
Hyperphosphatemia, End Stage Renal Disease
Interventions
Tenapanor, Sevelamer Carbonate
Drug
Lead sponsor
Ardelyx
Industry
Eligibility
Not listed
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Houston, California
Source: ClinicalTrials.gov public record
Updated Mar 29, 2023 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 2 Interventional Results available

An Efficacy and Safety Study of Sevelamer Carbonate in Hyperphosphatemic Pediatric Participants With Chronic Kidney Disease

NCT01574326
View directory record Official record
Conditions
Hyperphosphatemia, Chronic Kidney Disease
Interventions
Placebo, Sevelamer carbonate
Drug
Lead sponsor
Genzyme, a Sanofi Company
Industry
Eligibility
Up to 18 Years
Enrollment
101 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
23
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jul 25, 2016 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 4 Interventional

CARE-2 (Calcium Acetate [PhosLo®]/Sevelamer[Renagel®] Evaluation Study 2) for Heart Calcification in Dialysis Patients

NCT00211939
View directory record Official record
Conditions
Calcinosis, Arteriosclerosis, Hyperparathyroidism, Secondary
Interventions
calcium acetate, sevelamer, atorvastatin
Drug
Lead sponsor
Nabi Biopharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
203 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jan 8, 2008 · Synced Oct 20, 2026, 5:35 PM EDT
Not listed Phase 2 Interventional

An Open Label Trial to Evaluate the Effects of a Novel Renal Multivitamin on Inflammation and Other Biomarkers in Endstage Renal Disease Patients

NCT00834301
View directory record Official record
Conditions
Hyperphosphatemia, Inflammation, Renal Disease
Interventions
Oral Multivitamin
Dietary Supplement
Lead sponsor
Nephrian
Industry
Eligibility
18 Years to 80 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Simi Valley, California
Source: ClinicalTrials.gov public record
Updated Feb 3, 2009 · Synced Oct 20, 2026, 5:35 PM EDT
Terminated Phase 3 Interventional

Phase III Study to Investigate the Safety and Efficacy of Fermagate and Lanthanum Carbonate

NCT00841126
View directory record Official record
Conditions
Chronic Kidney Failure
Interventions
Magnesium iron hydroxycarbonate, Lanthanum carbonate, Placebo
Drug
Lead sponsor
Ineos Healthcare Limited
Industry
Eligibility
18 Years and older
Enrollment
657 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
63
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tempe, Arizona + 56 more
Source: ClinicalTrials.gov public record
Updated Oct 19, 2010 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 3 Interventional Results available

A 4-Week Dose-Ranging and Efficacy Trial of KRX-0502 (Ferric Citrate) in Patients With End-Stage Renal Disease

NCT01074125
View directory record Official record
Conditions
Hyperphosphatemia, End-Stage Renal Disease
Interventions
ferric citrate
Drug
Lead sponsor
Keryx Biopharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
15
States / cities
Westminster, Colorado • Pembroke Pines, Florida • Augusta, Georgia + 10 more
Source: ClinicalTrials.gov public record
Updated Dec 4, 2014 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 3 Interventional Results available

A Phase 3 Study of Tenapanor to Treat Hyperphosphatemia in ESRD Patients on Dialysis

NCT03427125
View directory record Official record
Conditions
Hyperphosphatemia
Interventions
Tenapanor, Placebo, Sevelamer Carbonate
Drug
Lead sponsor
Ardelyx
Industry
Eligibility
18 Years to 80 Years
Enrollment
1,559 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
2
States / cities
The Bronx, New York • Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 29, 2023 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 2 Interventional Results available

A Safety and Tolerability Study of Zerenex (Ferric Citrate) in Patients With End-Stage Renal Disease (ESRD)

NCT00648167
View directory record Official record
Conditions
Hyperphosphatemia, End-stage Renal Disease
Interventions
ferric citrate
Drug
Lead sponsor
Keryx Biopharmaceuticals
Industry
Eligibility
19 Years and older
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 4, 2017 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 1Phase 2 Interventional

The Effect of Oral Niacinamide on Plasma Phosphorus Levels in Peritoneal Dialysis Patients

NCT00508885
View directory record Official record
Conditions
Hyperphosphatemia
Interventions
Niacinamide, Placebo
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
17 participants
Timeline
2006 – 2007
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 30, 2007 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Not applicable Interventional

Behavioral Management of Phosphorus in Hemodialysis Patients

NCT02940743
View directory record Official record
Conditions
Cardiovascular Disease (CKD), Hyperphosphatemia
Interventions
Education (Edu), SM intervention, Social Cognitive Therapy (SCT)
Behavioral
Lead sponsor
NYU Langone Health
Other
Eligibility
19 Years to 89 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 31, 2018 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 1 Interventional

Double Blind Randomized Placebo Controlled Trial of FOSTRAP Chewing Gum in Patients With CKD and Hyperphosphatemia

NCT01057108
View directory record Official record
Conditions
Hyperphosphatemia, Chronic Kidney Disease
Interventions
FOSTRAP Chewing Gum, Placebo chewing gum
Other
Lead sponsor
Denver Nephrologists, P.C.
Other
Eligibility
18 Years and older
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 7, 2011 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 3 Interventional

Study to Compare Sevelamer Carbonate Powder to Sevelamer Hydrochloride Tablets in Patients With CKD on Hemodialysis

NCT00268957
View directory record Official record
Conditions
Kidney Diseases, Chronic Renal Insufficiency, End-Stage Renal Disease
Interventions
Sevelamer carbonate (Renvela®), Sevelamer hydrochloride (Renagel®)
Drug
Lead sponsor
Genzyme, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
217 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
29
States / cities
Birmingham, Alabama • Gadsden, Alabama • Mission Hills, California + 26 more
Source: ClinicalTrials.gov public record
Updated Mar 19, 2014 · Synced Oct 20, 2026, 5:35 PM EDT
Recruiting Phase 2 Interventional

Phosphate in Acute Pancreatitis

NCT07681050
View directory record Official record
Conditions
Pancreatitis
Interventions
Sodium Phosphate, Potassium Phosphate
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 3 Interventional Results available

An 8-Week Study to Evaluate Tenapanor in the Treatment of Hyperphosphatemia in End-Stage Renal Disease Patients on Hemodialysis (ESRD-HD)

NCT02675998
View directory record Official record
Conditions
Hyperphosphatemia
Interventions
Tenapanor, Placebo
Drug
Lead sponsor
Ardelyx
Industry
Eligibility
18 Years to 80 Years
Enrollment
219 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
32
States / cities
Huntsville, Alabama • Riverside, California • Denver, Colorado + 28 more
Source: ClinicalTrials.gov public record
Updated Aug 10, 2020 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 3 Interventional Results available

A Long-Term Safety Extension Trial of Ferric Citrate in Patients With End-Stage Renal Disease (ESRD) on Dialysis

NCT01554982
View directory record Official record
Conditions
End Stage Renal Disease, Kidney Failure, Renal Failure, Hyperphosphatemia, ESRD
Interventions
ferric citrate
Drug
Lead sponsor
Keryx Biopharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
168 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
33
States / cities
Los Angeles, California • Aurora, Colorado • Westminster, Colorado + 26 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2016 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 4 Interventional Results available

Transition to Ferric Citrate Among Hemodialysis and Peritoneal Dialysis Patients

NCT03079869
View directory record Official record
Conditions
Hyperphosphatemia
Interventions
Ferric Citrate
Drug
Lead sponsor
Kaiser Permanente
Other
Eligibility
Not listed
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 13, 2022 · Synced Oct 20, 2026, 5:35 PM EDT
Terminated Phase 4 Interventional Results available

Management of Mineral and Bone Disease in Hemodialysis-Calcitriol vs. Paricalcitol

NCT01725113
View directory record Official record
Conditions
Kidney Failure, Secondary Hyperparathyroidism, Hyperphosphatemia, Hypercalcemia
Interventions
Calcitriol, Paricalcitol
Drug
Lead sponsor
Winthrop University Hospital
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Mineola, New York
Source: ClinicalTrials.gov public record
Updated Nov 7, 2023 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 2 Interventional Results available

Chewed vs. Crushed Lanthanum Carbonate in Hemodialysis Patients

NCT00660530
View directory record Official record
Conditions
Hyperphosphatemia, Kidney Disease
Interventions
Lanthanum Carbonate Chewable Product, Lanthanum carbonate crushed powder
Drug
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 3, 2020 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 4 Interventional Results available

Phosphate Lowering in CKD Trial

NCT02209636
View directory record Official record
Conditions
Chronic Kidney Disease, Cardiovascular Disease
Interventions
Lanthanum carbonate, placebo, Ascorbic Acid, Nitroglycerin, Flow-mediated dilation measurement, Aortic pulse-wave velocity, Endothelial cell collection
Drug · Procedure
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
40 Years to 79 Years
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 26, 2022 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 4 Interventional

Auryxia (Ferric Citrate) Therapy for In-Center and Home Dialysis Participants

NCT04922645
View directory record Official record
Conditions
Hyperphosphatemia, Anemia, Iron Deficiency, Renal Insufficiency
Interventions
Ferric Citrate 1 gram Oral Tablet, Standard of care phosphate-lowering therapy
Drug
Lead sponsor
USRC Kidney Research
Network
Eligibility
18 Years and older
Enrollment
214 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
13
States / cities
Anchorage, Alaska • Mesa, Arizona • Pine Bluff, Arkansas + 6 more
Source: ClinicalTrials.gov public record
Updated Nov 7, 2022 · Synced Oct 20, 2026, 5:35 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Study to Evaluate the Efficacy of Tenapanor as Adjunctive Therapy to Phosphate Binder Therapy

NCT03824587
View directory record Official record
Conditions
Hyperphosphatemia
Interventions
Tenapanor, Placebo, Phosphate Binder Agents
Drug
Lead sponsor
Ardelyx
Industry
Eligibility
18 Years to 80 Years
Enrollment
236 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
48
States / cities
Huntsville, Alabama • Pine Bluff, Arkansas • Beverly Hills, California + 41 more
Source: ClinicalTrials.gov public record
Updated Mar 6, 2023 · Synced Oct 20, 2026, 5:35 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Pharmacokinetics, Pharmacodynamics, and Safety Profile of Understudied Drugs Administered to Children Per Standard of Care (POPS)

NCT04278404
View directory record Official record
Conditions
Coronavirus Infection (COVID-19), Pulmonary Arterial Hypertension, Urinary Tract Infections in Children, Hypertension, Pain, Hyperphosphatemia, Primary Hyperaldosteronism, Edema, Hypokalemia, Heart Failure, Hemophilia, Menorrhagia, Insomnia, Pneumonia, Skin Infection, Arrythmia, Asthma in Children, Bronchopulmonary Dysplasia, Adrenal Insufficiency, Fibrinolysis; Hemorrhage, Attention Deficit Hyperactivity Disorder, Multisystem Inflammatory Syndrome in Children (MIS-C), Kawasaki Disease, Coagulation Disorder, Down Syndrome
Interventions
The POP02 study is collecting bodily fluid samples (i.e., whole blood, effluent samples) of children prescribed the following drugs of interest per standard of care:
Drug
Lead sponsor
Duke University
Other
Eligibility
0 Years to 20 Years
Enrollment
5,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
49
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Los Angeles, California + 40 more
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Oct 20, 2026, 5:35 PM EDT