Evidence map›Paper›PMID 24311704›Full record

Observational studyClinical journal of the American Society of Nephrology : CJASN2014

Disordered FGF23 and mineral metabolism in children with CKD.

Anthony A Portale, Myles Wolf, Harald Jüppner, Shari Messinger, Juhi Kumar, Katherine Wesseling-Perry, George J Schwartz, Susan L Furth, Bradley A Warady, Isidro B Salusky

Registry-linked trialOpen access · greenAbstract readMulticenter StudyObservational Study
In one paragraph

Observational study in Clinical journal of the American Society of Nephrology : CJASN, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00327860 (Chronic Kidney Disease in Children Prospective Cohort Study), which is not on this map. Cited by 88 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
88citing papers in PubMed, 2 pooled it
6.9field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT00327860 recruitingnot on this map

Chronic Kidney Disease in Children Prospective Cohort Study (CKiD)

TypeobservationalSponsorJohns Hopkins Bloomberg School of Public HealthRan2003 to 2028Enrolled1,300ConditionsChronic Kidney Disease
3 · Its place in the literature

Who cites it

88 citing papers in PubMed, 2 syntheses or guidelines pooled it, 155 citations in OpenAlex.

  1. Guideline
  2. Pooled it
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. Fibroblast Growth Factor 23 in CKD: Getting Closer to Prime Time?Clinical journal of the American Society of Nephrology : CJASN · 2026
    Article
  9. Article
  10. Article
  11. Management of rickets: the new horizons for the pediatrician.Journal of health, population, and nutrition · 2025
    Review
  12. Review
  13. Article
  14. Bone-organ axes: bidirectional crosstalk.Military Medical Research · 2024
    Review
  15. Associations between anemia and FGF23 in the CKiD study.Pediatric nephrology (Berlin, Germany) · 2024
    Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Mineral Metabolism in Children: Interrelation between Vitamin D and FGF23.International journal of molecular sciences · 2023
    Review

28 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 9 institutions in 1 country.

Anthony A PortaleDepartment of Pediatrics, University of California, San Francisco, California;, †Department of Medicine and, §Department of Epidemiology and Public Health, University of Miami Miller School of Medicine, Miami, Florida;, ‡Department of Pediatrics, Harvard Medical School, Boston, Massachusetts;, ‖Department of Pediatrics, Weill Cornell Medical College, New York, New York;, ¶Department of Pediatrics, University of California, Los Angeles, California;, *Department of Pediatrics, University of Rochester School of Medicine, Rochester, New York;, ††Department of Pediatrics, University of Pennsylvania, Philadelphia, Pennsylvania, ‡‡Department of Pediatrics, University of Missouri-Kansas City School of Medicine, Kansas City, Missouri.
Myles Wolf
Harald Jüppner
Shari Messinger
Juhi Kumar
Katherine Wesseling-Perry
George J Schwartz
Susan L Furth
Bradley A Warady
Isidro B Salusky
University of California, Los Angeles · USCornell University · USHarvard University · USHarvard University Press · USUniversity of California, San Francisco · USUniversity of Miami · USUniversity of Missouri–Kansas City · USUniversity of Pennsylvania · USUniversity of Rochester · US

Funding

Tissue Phenotyping CoreP01DK011794 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI BOUXSEIN, MARY L · 1986 to 2023
$44.4M
Chronic Kidney Disease in Children Study (C-Kid)U01DK066174 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI SUSAN L. FURTH · 2003 to 2026
$25.1M
CKiD Cardiovascular Testing Travel SupplementU01DK066143 · NIDDK · CHILDREN'S MERCY HOSP (KANSAS CITY, MO) · PI Bradley Alan Warady · 2003 to 2026
$24.2M
The Kidney Disease in Children Data Management and Analysis Center (KIDMAC)U01DK066116 · NIDDK · JOHNS HOPKINS UNIVERSITY · PI MUNOZ, ALVARO · 2003 to 2017
$17.9M
Miami Clinical and Translational Science InstituteUL1TR000460 · NCATS · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI SACCO, RALPH L. · 2012 to 2016
$16.9M
Regulation of Bone Mineralization in Renal OsteodystrophyR01DK035423 · NIDDK · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI SALUSKY, ISIDRO B. · 1986 to 2012
$4.9M
UCLA Clinical and Translational Science InstituteKL2TR000122 · NCATS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI DUBINETT, STEVEN M. · 2012 to 2015
$4.5M
Central Biochemistry Laboratory of the CKiD ConsortiumU01DK082194 · NIDDK · UNIVERSITY OF ROCHESTER · PI SCHWARTZ, GEORGE J · 2008 to 2017
$3.5M
ROLE OF PTH IN RENAL OSTEODYSTROPHYR01DK067563 · NIDDK · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI SALUSKY, ISIDRO B. · 2005 to 2009
$1.9M
Disordered Mineral Metabolism in the CKiD Children: Role of FGF-23R01DK084978 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI PORTALE, ANTHONY A · 2010 to 2013
$1.4M
NCATS NIH HHS KL2 TR000122NCATS NIH HHS UL1-TR-000122NCATS NIH HHS UL1 TR000460NIDDK NIH HHS P01 DK011794NIDDK NIH HHS P01-DK-11794NIDDK NIH HHS R01 DK035423NIDDK NIH HHS R01 DK067563NIDDK NIH HHS R01 DK084978NIDDK NIH HHS R01-DK-084978NIDDK NIH HHS R01-DK-35423NIDDK NIH HHS R01-DK-67563NIDDK NIH HHS U01 DK066116NIDDK NIH HHS U01 DK066143NIDDK NIH HHS U01 DK066174NIDDK NIH HHS U01 DK082194NIDDK NIH HHS U01-DK-66116NIDDK NIH HHS U01-DK- 66143NIDDK NIH HHS U01-DK-66174
6 · The paper itself

Abstract

BACKGROUND AND

objectivesIn children with CKD, information is limited regarding the prevalence and determinants of fibroblast growth factor 23 excess and 1,25-dihyroxyvitamin D deficiency across the spectrum of predialysis CKD. This study characterized circulating concentrations of fibroblast growth factor 23 and 1,25-dihyroxyvitamin D, and investigated their interrelationships and associations with GFR and secondary hyperparathyroidism in children with CKD who were enrolled in the Chronic Kidney Disease in Children observational cohort study. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Plasma fibroblast growth factor 23 concentrations and determinants of mineral metabolism were measured in 464 children ages 1-16 years with predialysis CKD. GFR was measured by plasma disappearance of iohexol in 70% of participants and estimated by the Chronic Kidney Disease in Children estimating equation using serum creatinine and cystatin C concentrations in the remainder of the participants. Participants were grouped according to CKD stage and by 10-ml/min categories of GFR.

resultsMedian GFR for the cohort was 45 ml/min per 1.73 m(2) (interquartile range=33-57; range=15-109). Plasma fibroblast growth factor 23 concentration was above the normal range in 67% of participants (with higher levels observed among participants with lower GFR) before higher levels of serum parathyroid hormone and phosphorus were observed. Plasma fibroblast growth factor 23 levels were 34% higher in participants with glomerular disease than in participants with nonglomerular disease, despite similar GFR. Serum phosphorus levels, adjusted for age, were significantly lower at GFR of 60-69 ml/min per 1.73 m(2) than higher GFR, but thereafter they became higher in parallel with fibroblast growth factor 23 as GFR declined. Serum 1,25-dihyroxyvitamin D concentrations were lower in those participants with low GFR values, high fibroblast growth factor 23 levels, 25-hydroxyvitamin D deficiency, and proteinuria. Secondary hyperparathyroidism was present in 55% of participants with GFR<50 ml/min per 1.73 m(2).

conclusionIn children with predialysis CKD, high plasma fibroblast growth factor 23 is the earliest detectable abnormality in mineral metabolism, and levels are highest in glomerular diseases.

Indexed as

AdolescentAge FactorsBiomarkersCalciumCanadaChildChild, PreschoolCreatinineCross-Sectional StudiesCystatin CEarly DiagnosisFibroblast Growth Factor-23Fibroblast Growth FactorsGlomerular Filtration RateHumansHyperparathyroidism, Secondary1,25-dihydroxyvitamin DBiomarkersCalciumCreatinineCST3 protein, humanCystatin CFGF23 protein, humanFibroblast Growth Factor-23Fibroblast Growth FactorsParathyroid HormonePhosphorusPTH protein, humanVitamin D

Identifiers

PMID24311704
PMCPMC3913243
OpenAlexW2104612852

What OpenQuestion holds

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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.