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ClinicalTrials.gov public records Last synced Oct 25, 2026, 5:14 PM EDT

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Showing 1–24 of 41 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Fibroblast Growth Factor 23 Clear all
Completed Phase 4 Interventional Results available

A Trial to Assess the Safety and Efficacy of KRN23 in Epidermal Nevus Syndrome (ENS)

NCT04320316
View directory record Official record
Conditions
Epidermal Nevus Syndrome
Interventions
Crysvita (burosumab-twza) Treatment
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
6 Months and older · Male only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Oct 7, 2022 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Not applicable Interventional

A Study to Evaluate Chitosan Chewing Gum in Patients With Chronic Kidney Disease

NCT01475760
View directory record Official record
Conditions
Chronic Kidney Disease
Interventions
K2CG chewing gum (20mg chitosan), K2CG chewing gum (60mg chitosan)
Other
Lead sponsor
Denver Nephrologists, P.C.
Other
Eligibility
18 Years and older
Enrollment
167 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
4
States / cities
Tempe, Arizona • Denver, Colorado • Meridian, Idaho + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 2, 2012 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Phase 1/2 Study of Derazantinib (ARQ 087) in Adult Subjects With Advanced Solid Tumors With FGFR Genetic Alterations

NCT01752920
View directory record Official record
Conditions
Solid Tumor
Interventions
Derazantinib low dose range, Derazantinib middle dose range, Derazantinib high dose range, Derazantinib at recommended phase 2 dose (RP2D)
Drug
Lead sponsor
Basilea Pharmaceutica
Industry
Eligibility
18 Years and older
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
8
States / cities
Scottsdale, Arizona • Atlanta, Georgia • Detroit, Michigan + 5 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2023 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Phase 3 Interventional Results available

Study of KRN23 in Adults With X-linked Hypophosphatemia (XLH)

NCT02526160
View directory record Official record
Conditions
X-linked Hypophosphatemia
Interventions
burosumab, Placebo
Biological · Other
Lead sponsor
Kyowa Kirin, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
8
States / cities
Los Angeles, California • San Francisco, California • New Haven, Connecticut + 5 more
Source: ClinicalTrials.gov public record
Updated Jun 18, 2024 · Synced Oct 25, 2026, 5:14 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

The Effects of Dietary Phosphate Intake on Calciotropic Hormones and FGF23.

NCT00305279
View directory record Official record
Conditions
Healthy, Kidney Failure, Chronic
Interventions
Dietary
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 65 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 10, 2013 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Phase 2 Interventional Results available

Study of Burosumab (KRN23) in Adults With Tumor-Induced Osteomalacia (TIO) or Epidermal Nevus Syndrome (ENS)

NCT02304367
View directory record Official record
Conditions
Tumor Induced Osteomalacia (TIO), Epidermal Nevus Syndrome (ENS)
Interventions
Burosumab
Biological
Lead sponsor
Kyowa Kirin, Inc.
Industry
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
7
States / cities
Golden, Colorado • New Haven, Connecticut • Indianapolis, Indiana + 4 more
Source: ClinicalTrials.gov public record
Updated May 6, 2024 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Not applicable Interventional

Effect of Dietary Protein Source on Phosphaturia, PTH and FGF23 in Patients With CKD 3 and 4

NCT00764816
View directory record Official record
Conditions
Chronic Kidney Disease
Interventions
grain (soy) protein diet, casein (meat) protein diet
Other
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Jun 23, 2011 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Phase 2 Interventional Results available

Study of KRN23 (Burosumab), a Recombinant Fully Human Monoclonal Antibody Against Fibroblast Growth Factor 23 (FGF23), in Pediatric Subjects With X-linked Hypophosphatemia (XLH)

NCT02163577
View directory record Official record
Conditions
X-linked Hypophosphatemia
Interventions
burosumab
Biological
Lead sponsor
Kyowa Kirin, Inc.
Industry
Eligibility
5 Years to 12 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
4
States / cities
San Francisco, California • New Haven, Connecticut • Indianapolis, Indiana + 1 more
Source: ClinicalTrials.gov public record
Updated May 6, 2024 · Synced Oct 25, 2026, 5:14 PM EDT
Terminated Phase 1 Interventional

Cinacalcet for Fibroblast Growth Factor 23 (FGF23)-Mediated Hypophosphatemia (Hypophosphatemic Rickets)

NCT01748812
View directory record Official record
Conditions
Osteomalacia
Interventions
Osteomalacia
Drug
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
NIH
Eligibility
18 Years to 70 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 5, 2018 · Synced Oct 25, 2026, 5:14 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Pediatric Primary Hypertension and the Renin-Angiotensin System (PHRAS)

NCT03310684
View directory record Official record
Conditions
Pediatric Disorder, Pediatric Obesity, Primary Hypertension
Interventions
Not listed
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
5 Years to 17 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 28, 2025 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Not applicable Interventional Results available

FGF-23 (Fibroblast Growth Factor 23) Regulation in Chronic Kidney Disease

NCT00999037
View directory record Official record
Conditions
Secondary Hyperparathyroidism
Interventions
Sevelamer Carbonate, Placebo
Drug · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
6 Years to 21 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 31, 2023 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Not applicable Interventional

Association of FGF-23 and Parathyroid Hormone (PTH) in Dialysis Patients

NCT00477516
View directory record Official record
Conditions
End-Stage Renal Disease
Interventions
exposure to a high-calcium dialysate bath
Procedure
Lead sponsor
James B. Wetmore, MD
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jun 15, 2012 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Lowering Phosphate Additive Intake on Metabolism and Cardiovascular Health in Community-Living Adults

NCT02620449
View directory record Official record
Conditions
Healthy, Chronic Kidney Disease
Interventions
Diet
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Mar 11, 2021 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Early Phase 1 Interventional

Burosumab for CSHS

NCT03993821
View directory record Official record
Conditions
Cutaneous Skeletal Hypophosphatemia Syndrome (CSHS), Epidermal Nevus Syndrome
Interventions
Burosumab
Drug
Lead sponsor
Laura Tosi
Other
Eligibility
Not listed
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Healthy Combine Study

NCT03136705
View directory record Official record
Conditions
Healthy
Interventions
Nicotinamide, Lanthanum Carbonate, Lanthanum Carbonate Placebo, Nicotinamide Placebo
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 60 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 23, 2024 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Phase 1 Interventional

Acute Effects of Canagliflozin, a Sodium Glucose Co-Transporter 2 (SGLT2) Inhibitor on Bone Metabolism in Healthy Volunteers

NCT02404870
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Placebo, Canagliflozin
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 4, 2025 · Synced Oct 25, 2026, 5:14 PM EDT
Not listed No phase listed Observational

Cardiorenal Risk Stratification Pilot Study

NCT03628443
View directory record Official record
Conditions
Cardio-Renal Syndrome, Heart Failure, Chronic Kidney Diseases
Interventions
Fibroblast Growth Factor 23
Diagnostic Test
Lead sponsor
Coney Island Hospital, Brooklyn, NY
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Oct 16, 2018 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Phase 2 Interventional Results available

Long-Term Extension Study of KRN23 in Adult Subjects With X-Linked Hypophosphatemia (XLH)

NCT02312687
View directory record Official record
Conditions
X-Linked Hypophosphatemia
Interventions
KRN23
Biological
Lead sponsor
Kyowa Kirin, Inc.
Industry
Eligibility
Not listed
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
5
States / cities
San Francisco, California • New Haven, Connecticut • Indianapolis, Indiana + 2 more
Source: ClinicalTrials.gov public record
Updated May 6, 2024 · Synced Oct 25, 2026, 5:14 PM EDT
Completed No phase listed Observational

Catheterization to Locate Mesenchymal Tumors in Patients With Tumor-Induced Osteomalacia or Oncogenic Osteomalacia

NCT00099762
View directory record Official record
Conditions
Osteomalacia, Neoplasms
Interventions
Not listed
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
NIH
Eligibility
8 Years to 100 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2004
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 25, 2026, 5:14 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 21, 2023 · Synced Oct 25, 2026, 5:14 PM EDT
Active, not recruiting No phase listed Observational

X-linked Hypophosphatemia Disease Monitoring Program

NCT03651505
View directory record Official record
Conditions
X-linked Hypophosphatemia, Hypophosphatemic Rickets
Interventions
No intervention
Other
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
Not listed
Enrollment
782 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2032
U.S. locations
24
States / cities
Birmingham, Alabama • Los Angeles, California • San Diego, California + 18 more
Source: ClinicalTrials.gov public record
Updated Aug 28, 2026 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Vitamin D Deficiency in Adolescent Girls

NCT01180946
View directory record Official record
Conditions
Healthy, Vitamin D Deficiency
Interventions
ergocalciferol, placebo pill
Dietary Supplement · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
9 Years to 18 Years · Female only
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 5, 2013 · Synced Oct 25, 2026, 5:14 PM EDT
Completed No phase listed Observational

Physiologic Regulation of FGF-23

NCT00356512
View directory record Official record
Conditions
Hypoparathyroidism
Interventions
Not listed
Lead sponsor
National Institute of Dental and Craniofacial Research (NIDCR)
NIH
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2006
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 25, 2026, 5:14 PM EDT
Completed Not applicable Interventional

Vitamin D and Microbiota in Cystic Fibrosis

NCT02589444
View directory record Official record
Conditions
Vitamin D Deficiency, Cystic Fibrosis
Interventions
High-Dose Vitamin D3, Stool Sample, Sputum Sample, Sham Comparator, Blood draw
Dietary Supplement · Other · Procedure
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Jun 14, 2017 · Synced Oct 25, 2026, 5:14 PM EDT