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Vitamin D Supplement

Repeated-dose Safety, Efficacy, Pharmacokinetic and Pharmacodynamic of CTAP101, Immediate-release Calcifediol, High-dose Cholecalciferol, and Paricalcitol Plus Low-dose Cholecalciferol in Patients With Secondary Hyperparathyroidism, Chronic Kidney Disease 3-4 and Vitamin D Insufficiency

Phase 4
Waitlist Available
Research Sponsored by OPKO Health, Inc.
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Be older than 18 years old
Timeline
Screening 3 weeks
Treatment Varies
Follow Up 5 months
Awards & highlights
Pivotal Trial
All Individual Drugs Already Approved
Approved for 5 Other Conditions
Drug Has Already Been Approved
No Placebo-Only Group

Summary

An Open-Label, Repeated-Dose Safety, Efficacy, Pharmacokinetic and Pharmacodynamic Study of Oral CTAP101 Capsules, Immediate- Release (IR) Calcifediol, High-Dose Cholecalciferol, and Paricalcitol Plus Low-Dose Cholecalciferol in Patients with Secondary Hyperparathyroidism, Stage 3 or 4 Chronic Kidney Disease and Vitamin D Insufficiency

Eligible Conditions
  • Chronic kidney disease
  • Vitamin D Deficiency
  • Chronic Kidney Disease
  • Renal Disease

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~5 months
This trial's timeline: 3 weeks for screening, Varies for treatment, and 5 months for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
Incidence and Severity of Treatment-Emergent Adverse Events (TEAE) as Assessed by Common Terminology Criteria for Adverse Events (CTCAE) Version 5.0.

Awards & Highlights

Pivotal Trial
The final step before approval, pivotal trials feature drugs that have already shown basic safety & efficacy.
All Individual Drugs Already Approved
Therapies where all constituent drugs have already been approved are likely to have better-understood side effect profiles.
Approved for 5 Other Conditions
This treatment demonstrated efficacy for 5 other conditions.
Drug Has Already Been Approved
The FDA has already approved this drug, and is just seeking more data.
No Placebo-Only Group
All patients enrolled in this study will receive some form of active treatment.

Trial Design

4Treatment groups
Experimental Treatment
Active Control
Group I: Immediate-release (IR) calcifediolExperimental Treatment1 Intervention
Immediate-release (IR) calcifediol/266 micrograms (mcg) capsule before breakfast on the mornings of Day 1 and Day 29
Group II: CholecalciferolExperimental Treatment1 Intervention
Cholecalciferol/Capsules 300,000 International Units (IU) (high-dose) before breakfast on the mornings of Day 1 and Day 29
Group III: CTAP101Active Control1 Intervention
CTAP101/Calcifediol Capsules 60 micrograms (mcg) once daily at bedtime, except on Days 1 and 29 when dosing will occur in the morning before breakfast
Group IV: ParicalcitolActive Control2 Interventions
Paricalcitol/Capsules 1 mcg plus cholecalciferol capsules 800 IU (low-dose) once daily in the morning before breakfast, except on Days 1 and29 when dosing will occur before breakfast
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Calcifediol
FDA approved
Cholecalciferol
FDA approved

Find a Location

Who is running the clinical trial?

OPKO Health, Inc.Lead Sponsor
47 Previous Clinical Trials
5,275 Total Patients Enrolled
3 Trials studying Vitamin D Deficiency
556 Patients Enrolled for Vitamin D Deficiency
~9 spots leftby Jan 2026