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CompletedNCT00888069Updated Sep 30, 2014

Pharmacokinetics and Safety Pilot Study of Single-Dose Oral and Intravenous CTAP101 in Stage 3 and 4 Chronic Kidney Disease Subjects

A Phase 1 interventional study of CTAP101 Capsules and CTAP101 Injection in Chronic Kidney Disease, Secondary Hyperparathyroidism and Chronic Renal Insufficiency, sponsored by OPKO IP Holdings II, Inc.. Completed at 12 sites in United States. Open to participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2014-09-30.

Sponsored by OPKO IP Holdings II, Inc. · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
28
Allocation
Randomized
Ages
18 Years to 80 Years
Sex
All
01

Study summary

This study will investigate how the levels of a single dose of CTAP101 changes in the body over time (pharmacokinetics, PK) and how CTAP101 affects other mineral and hormonal balances (pharmacodynamics, PD) in patients with Stage 3 or 4 chronic kidney disease (CKD) with vitamin D insufficiency and secondary hyperparathyroidism (SHPT).

02

Conditions studied

  • Chronic Kidney Disease
  • Secondary Hyperparathyroidism
  • Chronic Renal Insufficiency
  • Chronic Renal Failure

Keywords

  • Parathyroid Diseases
  • Renal Insufficiency
  • Kidney Failure, Chronic
  • Hyperparathyroidism, Secondary
  • Vitamin D
  • Hyperparathyroidism
  • Renal Insufficiency, Chronic
  • Kidney Diseases
  • Kidney Failure
03

In context

Kidney Diseases

3,840 studies on the registry are indexed under Kidney Diseases; 500 are open to participants now.

This study's enrollment of 28 is below the median of 70 across 2,640 interventional studies indexed under Kidney Diseases.

Browse Kidney Diseases studies →

Lead sponsor

OPKO IP Holdings II, Inc. is the lead sponsor of 5 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Body mass index between great than or equal to 18 and less than or equal to 40 kg/m2
  • Plasma iPTH value for Stage 3 CKD greater than or equal to 70 pg/mL and lower than or equal to 1000 pg/mL
  • Plasma iPTH value for Stage 4 CKD greater than or equal to 110 pg/mL and lower than or equal to 1000 pg/mL
  • Adjusted serum total calcium value greater than 8.4 mg/dL and lower than 10.0 mg/dL
  • Serum phosphorus value greater than or equal to 2.5 mg/dL and lower than or equal to 5.5 mg/dL
  • Serum 25-hydroxyvitamin D level greater than 15 ng/mL and lower than 30 ng/mL
  • Hemoglobin level greater than or equal to 10 g/dL

Exclusion criteria

Exclusion Criteria:

  • Has nephrotic range proteinuria
  • Has liver disease or significant hepatic dysfunction
  • Is taking Cytochrome P450 3A4 inhibitors or inducers
  • Has adult history of kidney stones and dysphagia
  • Has known history of alcohol/controlled substance abuse or are positive for drug of abuse screen
  • Currently on dialysis
  • Current serious illness such as cancer, HIV, cardiovascular event or hepatitis
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
28 participants (actual)

Study arms

  • Experimental
    Low Dose CTAP101 Capsules

    CTAP101 Capsules, 450 mcg dose

    Drug: CTAP101 Capsules

  • Experimental
    High Dose CTAP101 Capsules

    CTAP101 Capsules, 900 mcg dose

    Drug: CTAP101 Capsules

  • Experimental
    CTAP101 Injection

    IV injection, 448 mcg dose

    Drug: CTAP101 Injection

Interventions

  • DrugCTAP101 Capsules

    Single dose oral administration

  • DrugCTAP101 Injection

    single IV injection

06

What researchers measure

Primary outcomes

  1. To assess the PK and bioavailability of CTAP101 in Stage 3 and 4 CKD subjects with vitamin D insufficiency and SHPT

    Time frame: from 3 to 0 hours prior to dosing until 42 days post dosing

Secondary outcomes

  1. To assess the safety and tolerability of CTAP101 capsules and injection

    Time frame: From signing of ICF (Day -35) through study completion (Day 42 post dosing)

  2. To assess the pharmacodynamics of single dose CTAP101 in Stage 3 and Stage 4 CKD subjects with vitamin D insufficiency and SHPT.

    Time frame: From signing of ICF (Day -35) through study completion (Day 42 post dosing)

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Study locations

12 sites
  • Pivotal Research Centers
    Peoria, Arizona 85381, United States
  • Research by Design
    Evergreen Park, Illinois 60805, United States
  • Western New England Renal & Transplant Associates
    Springfield, Massachusetts 01107, United States
  • Twin Cities Clinical Research
    Brooklyn Center, Minnesota 55430, United States
  • DCI
    Cincinnati, Ohio 45206, United States
  • MetroHealth Medical Center
    Cleveland, Ohio 44109-1998, United States
  • Northeast Clinical Research
    Allentown, Pennsylvania 18103, United States
  • Southeast Renal Research Institute
    Chattanooga, Tennessee 37404, United States
  • Vanderbilt University Medical Center
    Nashville, Tennessee 37232, United States
  • Southwest Houston Research Ltd
    Houston, Texas 77099, United States
  • Purity Dialysis Centers / Nephrology Associates
    Delafield, Wisconsin 53018, United States
  • Gunderson Clinic Ltd.
    La Crosse, Wisconsin 54601, United States
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 30, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00888069
Lead sponsor
OPKO IP Holdings II, Inc.
Responsible party
Sponsor
First posted
Apr 24, 2009
Start date
May 2009
Primary completion
Nov 2009
Completion
Dec 2009
Last update
Sep 30, 2014

Study contacts

Joel Melnick, MD
study director · OPKO Renal

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Feb 2010. You cannot join it, but the record below documents what was studied.

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