Overview

A Double Blind Randomized Placebo Trial of Maintenance of Normal Serum Phosphorus in CKD

Status:
Completed
Trial end date:
2011-07-01
Target enrollment:
0
Participant gender:
All
Summary
The purpose of this study is to determine the ability of 3 commercially available phosphorus binders (calcium acetate, sevelamer carbonate, and lanthanum carbonate) to achieve and maintain a phosphorus level in the normal range in patients with chronic kidney disease.
Phase:
N/A
Accepts Healthy Volunteers?
No
Details
Lead Sponsor:
Denver Nephrologists, P.C.
Collaborators:
DaVita Dialysis
Fresenius Medical Care North America
Genzyme, a Sanofi Company
Novartis Pharmaceuticals
Shire
Treatments:
Calcium
Calcium acetate
Sevelamer
Criteria
Inclusion Criteria:

- Men or women > 18 years of age;

- Has signed and dated the most recent informed consent form approved by an IRB;

- Will, in the opinion of the PI, be compliant with prescribed phosphate binder therapy;

- Must be able to communicate with the investigator, and be able to understand and
comply with the requirements of the study;

- Has a life expectancy >12 months;

- An eGFR rate (estimated by the MDRD equation) ≥ 20 and ≤ 45 mL/min/1.73m2 obtained by
screening laboratory values and in the opinion of the investigator felt to have CKD
without evidence of recent acute kidney injury or unexpected decline in renal
function;

- A screening serum phosphorus value > 3.5 mg/dL and ≤ 6.0 mg/dL;

- Must consume a minimum of 2 meals per day and be willing to avoid intentional changes
in diet;

- Women of child bearing potential must be practicing an acceptable form of birth
control.

Exclusion Criteria:

- Receiving or has received an investigational drug (or is currently using an
investigational device) within 30 days prior to baseline;

- Subject is pregnant, is breast feeding or is of child bearing potential and not using
acceptable birth control measures;

- Has had a previous renal transplant;

- Has a chronic reliance on enemas or laxatives;

- Has a known sensitivity or previous intolerance to any of the products to be
administered during the study;

- Clinical evidence of active malignancy and/or receiving systemic
chemotherapy/radiotherapy with the exception of basal cell or squamous carcinoma of
the skin;

- Currently has an active infection or is being treated with antibiotics (within 14 days
prior to baseline);

- Has been hospitalized within 30 days prior to baseline (with the exception of
hospitalizations due to vascular access procedures);

- Any surgical or medical condition which might significantly alter the function of
phosphorus binders or which may jeopardize the subject in case of participation in the
study. The investigator should be guided by evidence of any of the following: Severe
gastrointestinal motility disorder,Bowel obstruction,Dysphagia or other disorders of
swallowing, Acute peptic ulcer, Ulcerative colitis or Crohn's disease, History of
major gastrointestinal tract surgery, Severe malabsorption;

- Currently taking any of the following within 14 days prior to baseline; Calcitriol or
its analogs, Cinacalcet hydrochloride, Medications prescribed for the purpose of
phosphorus binding;

- Screening serum intact PTH >500 pg/mL;

- Screening corrected calcium < 8.0 mg/dL or > 10.4 mg/dL;

- Uncontrolled hyperlipidemia in the opinion of the PI;

- Initiation of chronic maintenance hemodialysis planned within 12 months;

- Relocation to another area planned within 12 months;

- Has a known history of immunodeficiency diseases, including a positive HIV test
result;

- Active drug or alcohol dependence or abuse (excluding tobacco use) within the 12
months prior to dosing or evidence of such abuse;

- Evidence of active liver disease with AST or ALT levels greater than 3X the upper
limit of normal;

- Has had a major cardiovascular event within 180 days of screening.