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Showing 1–24 of 59 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Hyperphosphatemia Clear all
Not listed Phase 3 Interventional

Study Comparing Effects of Lanthanum Carbonate Versus Calcium Acetate Versus Dietary Phosphorus Restriction

NCT01357317
View directory record Official record
Conditions
Chronic Kidney Disease
Interventions
Diet counseling, Phosphorus binder
Other · Drug
Lead sponsor
Salem Veterans Affairs Medical Center
Federal
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Salem, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 11, 2012 · Synced Sep 5, 2026, 4:37 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 12, 2022 · Synced Sep 5, 2026, 4:37 PM EDT
Completed Phase 2 Interventional

Efficacy and Safety Study of Magnesium Iron Hydroxycarbonate for the Reduction of High Blood Phosphate in Hemodialysis Patients

NCT00317694
View directory record Official record
Conditions
Chronic Kidney Failure
Interventions
Fermagate, Placebo
Drug
Lead sponsor
Ineos Healthcare Limited
Industry
Eligibility
18 Years and older
Enrollment
111 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
4
States / cities
Pine Bluff, Arkansas • Stuttgart, Arkansas • Charlotte, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 9, 2009 · Synced Sep 5, 2026, 4:37 PM EDT
Completed Phase 2 Interventional Results available

Randomized Study Comparing Genz-644470, Placebo, and Sevelamer Carbonate in Chronic Kidney Disease Patients on Hemodialysis

NCT00853242
View directory record Official record
Conditions
Kidney Failure, Chronic
Interventions
Placebo, Genz-644470, Sevelamer carbonate
Drug
Lead sponsor
Genzyme, a Sanofi Company
Industry
Eligibility
18 Years and older
Enrollment
349 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
52
States / cities
Alexander City, Alabama • Birmingham, Alabama • Hot Springs, Arkansas + 49 more
Source: ClinicalTrials.gov public record
Updated Apr 30, 2015 · Synced Sep 5, 2026, 4:37 PM EDT
Completed Phase 3 Interventional Results available

Ferric Citrate for the Prevention of Renal Failure in Adults With Advanced Chronic Kidney Disease

NCT05085275
View directory record Official record
Conditions
Anemia, Iron Deficiency, Hyperphosphatemia, Renal Insufficiency, Chronic, Renal Anemia, Disease Progression, Cardiovascular, Iron
Interventions
Ferric Citrate 1 GM Oral Tablet [AURYXIA], Placebo
Drug
Lead sponsor
USRC Kidney Research
Network
Eligibility
18 Years and older
Enrollment
289 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
23
States / cities
Pine Bluff, Arkansas • Chula Vista, California • El Centro, California + 16 more
Source: ClinicalTrials.gov public record
Updated Aug 28, 2025 · Synced Sep 5, 2026, 4:37 PM EDT
Completed Not applicable Interventional

PD Study to Assess Phosphate Binding Characteristics of K2CG Chewing Gum

NCT01319578
View directory record Official record
Conditions
Hyperphosphatemia, Chronic Kidney Disease
Interventions
K2CG chewing gum
Other
Lead sponsor
Denver Nephrologists, P.C.
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 14, 2011 · Synced Sep 5, 2026, 4:37 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 5, 2023 · Synced Sep 5, 2026, 4:37 PM EDT
Completed No phase listed Observational Results available

Long-term Effect of Lanthanum Carbonate on Bone

NCT00557323
View directory record Official record
Conditions
Hyperphosphatemia
Interventions
Lanthanum carbonate
Drug
Lead sponsor
Shire
Industry
Eligibility
Not listed
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
8
States / cities
Lynwood, California • Torrance, California • Springfield, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2021 · Synced Sep 5, 2026, 4:37 PM EDT
Recruiting Phase 3 Interventional

A Study of a Novel Iron-based Phosphate Binder AP301 in Patients With Hyperphosphatemia in the U.S. and China

NCT06933472
View directory record Official record
Conditions
Hyperphosphatemia, Chronic Kidney Disease, Receiving Dialysis, ESRD (End-Stage Renal Disease), Dialysis
Interventions
AP301, AP301 Low Dose
Drug
Lead sponsor
Alebund Pharmaceuticals
Industry
Eligibility
12 Years and older
Enrollment
264 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
18
States / cities
Granada Hills, California • San Dimas, California • Lone Tree, Colorado + 14 more
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Sep 5, 2026, 4:37 PM EDT
Terminated Not applicable Interventional Results available

The Effect(s) of Sevelamer Carbonate (Renvela) on Atherosclerotic Plaque Inflammation Judged by FDG-PET Scan

NCT01238588
View directory record Official record
Conditions
Dialysis, Cardiovascular Disease, Atherosclerosis, Inflammation, Hyperphosphatemia
Interventions
Sevelamer Carbonate (Renvela)
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
50 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
10
States / cities
Boston, Massachusetts • Framingham, Massachusetts • Marlborough, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 30, 2017 · Synced Sep 5, 2026, 4:37 PM EDT
Completed Not applicable Interventional Results available

The Effect of Lanthanum Carbonate on Fibroblast Growth Factor 23 ( FGF23) in Chronic Kidney Disease

NCT01002872
View directory record Official record
Conditions
Metabolic Bone Disease
Interventions
Lanthanum Carbonate (Fosrenol), placebo
Drug
Lead sponsor
Endeavor Health
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Evanston, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 20, 2023 · Synced Sep 5, 2026, 4:37 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Bioequivalence Study Comparing Calcium Acetate Oral Solution Versus Calcium Acetate Gelcaps in Healthy Volunteers

NCT00742820
View directory record Official record
Conditions
Hyperphosphatemia
Interventions
Calcium Acetate Oral Solution 667 mg per 5 mL, Calcium Acetate 667 mg GelCaps, Calcium Citrate 950 mg Caplets
Drug · Dietary Supplement
Lead sponsor
Fresenius Medical Care North America
Industry
Eligibility
18 Years to 75 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 8, 2009 · Synced Sep 5, 2026, 4:37 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 6, 2022 · Synced Sep 5, 2026, 4:37 PM EDT
Completed Phase 4 Interventional Results available

Study to Evaluate the Use of Tenapanor as Core Therapy in the Treatment of Hyperphosphatemia

NCT04549597
View directory record Official record
Conditions
Chronic Kidney Disease Requiring Chronic Dialysis, Hyperphosphatemia
Interventions
Tenapanor
Drug
Lead sponsor
Ardelyx
Industry
Eligibility
18 Years to 90 Years
Enrollment
333 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Lauderdale Lakes, Florida
Source: ClinicalTrials.gov public record
Updated Mar 28, 2023 · Synced Sep 5, 2026, 4:37 PM EDT
Terminated Phase 3 Interventional

Phase III Study to Investigate the Safety and Efficacy of Fermagate and Sevelamer Hydrochloride

NCT00844662
View directory record Official record
Conditions
Chronic Kidney Failure
Interventions
Fermagate, Sevelamer hydrochloride
Drug
Lead sponsor
Ineos Healthcare Limited
Industry
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
40
States / cities
Hot Springs, Arkansas • Bakersfield, California • Lynwood, California + 32 more
Source: ClinicalTrials.gov public record
Updated Oct 18, 2010 · Synced Sep 5, 2026, 4:37 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 3, 2014 · Synced Sep 5, 2026, 4:37 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 18, 2010 · Synced Sep 5, 2026, 4:37 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 25, 2026 · Synced Sep 5, 2026, 4:37 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 9, 2020 · Synced Sep 5, 2026, 4:37 PM EDT
Not listed Phase 2 Interventional

Efficacy and Tolerability of ILY101 in Dialysis Patients With Hyperphosphatemia

NCT00358046
View directory record Official record
Conditions
Kidney Diseases, Renal Insufficiency
Interventions
ILY101
Drug
Lead sponsor
Ilypsa
Industry
Eligibility
18 Years to 80 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2006
U.S. locations
18
States / cities
Mobile, Alabama • Mountain View, California • Riverside, California + 15 more
Source: ClinicalTrials.gov public record
Updated Feb 6, 2007 · Synced Sep 5, 2026, 4:37 PM EDT
Completed Phase 1 Interventional

The Effect of Oral Niacinamide on Serum Phosphorus Levels in Hemodialysis Patients

NCT00316472
View directory record Official record
Conditions
Hyperphosphatemia
Interventions
Niacinamide
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 15, 2009 · Synced Sep 5, 2026, 4:37 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 6, 2011 · Synced Sep 5, 2026, 4:37 PM EDT
Completed Phase 3 Interventional Results available

A 58-Week Safety and Efficacy Trial of Ferric Citrate in Patients With ESRD on Dialysis

NCT01191255
View directory record Official record
Conditions
Hyperphosphatemia, Kidney Failure
Interventions
ferric citrate, ca acetate, sevelamer carbonate, placebo
Drug
Lead sponsor
Keryx Biopharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
441 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
52
States / cities
Tempe, Arizona • Los Angeles, California • Riverside, California + 45 more
Source: ClinicalTrials.gov public record
Updated Dec 9, 2014 · Synced Sep 5, 2026, 4:37 PM EDT
Completed Phase 3 Interventional Results available

A Phase 3 Study to Investigate the Safety and Efficacy of PA21, a Phosphate Binder, in Dialysis Patients

NCT01324128
View directory record Official record
Conditions
Chronic Kidney Disease Requiring Chronic Dialysis
Interventions
PA21 (2.5 g tablet containing 500 mg iron), Sevelamer carbonate, PA21-1 (1.25 g tablet containing 250 mg iron)
Drug
Lead sponsor
Vifor Pharma
Industry
Eligibility
18 Years and older
Enrollment
1,059 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Apr 23, 2014 · Synced Sep 5, 2026, 4:37 PM EDT