FGF23 Reduction : Efficacy of a New Phosphate Binder in CHronic Kidney Disease

Last updated: April 27, 2016
Sponsor: Centre Hospitalier Universitaire, Amiens
Overall Status: Completed

Phase

3

Condition

Nephropathy

Renal Failure

Kidney Failure (Pediatric)

Treatment

N/A

Clinical Study ID

NCT01220843
PI10-PR-CHOUKROUN-1
2010-020872-49
  • Ages > 18
  • All Genders

Study Summary

The purpose of this study is to evaluate in Chronic Kidney Disease (CKD) patients not on dialysis and who have an Fibroblast growth factor 23 (FGF23) serum levels elevated, the effect of non calcic phosphate binder: sevelamer carbonate. This treatment could lead to a diminution of FGF23 serum levels due to the diminution of intestinal absorption of dietary phosphate. In addition, the investigators will describe the impact of the FGF23 level monitoring on the main phosphocalcium metabolism markers as phosphatemia, intact parathyroid hormone (iPTH), serum calcitriol and phosphaturia.

Eligibility Criteria

Inclusion

Inclusion Criteria:

  • Patients who gave their written consent

  • Women or men over 18 years

  • No concomitant treatment with phosphate binders

  • CKD patients not on dialysis stage 3b or 4, as a GFR (glomerular filtration rate)between 15 and 45 ml/min/1.73m2, using simplified MDRD formula

  • At the inclusion visit,patients with blood results as levels of C-terminal FGF-23 > 120 rU/ml and fasting phosphatemia > 1.0 mmol/l

  • Able to comply with the study procedures during all the study period

  • Willing to abstain from taking any following medication during all the study period :antiacid and phosphate binders with aluminium, magnesium, calcium orlanthanum;Treatment for hyperparathyroid : active vitamin D and calcimimetic ; nativevitamin D

  • Female subjects who are of childbearing potential must have a reliable contraceptivemethods during all the study period (hormonal, barrier methods or intrauterine device)

  • No Participation in any clinical trial using an investigational product or deviceduring the 30 days preceding the first protocol visit

  • Informed patient who agreed with the utilisation of his data for the study

  • Able to read and understand french and study objectives

  • Inscription to medical assurance

Exclusion

Exclusion Criteria:

  • predisposition with or presence of intestinal or ileus obstruction or severegastrointestinal motility disorder(like severe constipation)

  • Antecedent of major gastrointestinal surgery

  • Abusive consumption of alcohol and drug (exclude tabacco) according the investigator

  • Arrythmia treated by antiarrythmic agent or epilepsia treated by anticonvulsant

  • Antecedent of kidney transplantation

  • Antecedent of parathyroidectomy

  • At the inclusion visit,patients with blood results as fasting phosphatemia > 1.78mmol/l or serum 25(OH)D3< 20 ng/ml (<50 nmol/)

  • Pregnancy or breastfeeding

Study Design

Total Participants: 98
Study Start date:
October 01, 2010
Estimated Completion Date:
April 30, 2013

Study Description

The total length of the study is 14 weeks divided in 2 parts the first part is the screening period she will stay 1 to 2 weeks and the second period with the treatment with permanent dosage during 12 weeks.

During the screening visit (Vo) inclusion and non inclusion criteria will be checked and the patient consent will be collected. Biological analysis will be performed.

If the patient still eligible after the reception of biological results, he will be randomized and will received, either sevelamer carbonate, either placebo. The study treatment will be begun at the randomisation visit (V1) the dosage will be 2 tablets 3 times per day (corresponding to 4.8g/d sevelamer carbonate for patient taken active medication).

Patient will be seen every 2 weeks after the first visit (+/-5days) during 6 weeks (visit2/day15, visit3/day30, visit4/day45) and 12 weeks after the randomisation visit (visit5/day90). This visits will include biological analysis, compliance evaluation, adverse events report, concomitant treatments reports.

After the consent signature, all the adverse events will be collected until the end of the study for the patient (Visit5 or end of the study visit). Serious adverse events will be collected until 30 days after the date of the end of the study.

The same dosage of the study treatment will be followed during all the study period except if the phosphatemia (evaluated during one analysis) is found above the normal range planned by the protocol. In this case, the dosage adaptations will be :

  • If during a visit the phosphatemia is above or equal to 0.8 mmol/l and superior to 0.5 mmol/l, the study treatment dosage need to be reduce to 2 tablets 3 times per day to 1 tablet 3 times per day.

  • If during the next blood punction, the phosphatemia still or equal to 0.8 mmol/l and superior to 0.5 mmol/l, the study treatment will be stopped and a "end of study" visit will be performed.

  • If during one study visit, the phosphatemia is above or equal to 0.5 mmol/l,the study treatment will be stopped immediately and a end of study visit will be performed.

Connect with a study center

  • CHU Amiens service de nephrologie

    Amiens, 8000
    France

    Site Not Available

  • CHU de Bordeaux Service de néphrologie

    Bordeaux, 33076
    France

    Site Not Available

  • CHU Caen service de néphrologie

    Caen, 14033
    France

    Site Not Available

  • CHU Lyon service de néphrologie

    Lyon, 69437
    France

    Site Not Available

  • CHU Marseille Service de néphrologie

    Marseille, 13385
    France

    Site Not Available

  • CHU de Montpellier Hôpital Lapeyronie Service de Néphrologie

    Montpellier, 34295
    France

    Site Not Available

  • CHU de Nice Service de néphrologie

    Nice, 06002
    France

    Site Not Available

  • Hôpital Européen Georges Pompidou Service de Nephrologie

    Paris, 75098
    France

    Site Not Available

  • Hôpital Tenon Service de Nephrologie

    Paris, 75020
    France

    Site Not Available

  • CHU Reims service de néphrologie

    Reims, 51092
    France

    Site Not Available

  • Clinique du Landy Centre de dialyse

    Saint Ouen, 93400
    France

    Site Not Available

  • CHU St Etienne Hopital Nord Service de néphrologie

    St Etienne, 42055
    France

    Site Not Available

  • Néphrologie - Dialyse Centre de Rein Artificiel

    TASSIN la Demi Lune, 69160
    France

    Site Not Available

  • CH Valenciennes hémodialyse

    Valenciennes, 59322
    France

    Site Not Available

  • CHU de Nancy service de néphrologie

    Vandeuvre les Nancy, 54511
    France

    Site Not Available

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