A Phase 2 Study of an Oral Vitamin D Compound (DP001) in Secondary Hyperparathyroidism in Patients on Hemodialysis (2MD-7H-2B)

Deltanoid Pharmaceuticals

Status and phase: Completed; Phase 2

Conditions: Hyperparathyroidism, Secondary; Kidney Failure, Chronic

Treatments: Drug: Placebo; Drug: DP001 softgel capsules

Study type: Interventional

Funder types: Industry

Identifiers

NCT01922843

2MD-7H-2B

Details and patient eligibility

About

The goal of this study is to test a new vitamin D compound for its ability to reduce parathyroid hormone levels in patients who are on hemodialysis.

Full description

This is a randomized, double-blind, placebo-controlled study of the vitamin D analog 2-methylene-19-nor-20S-1α,25-dihydroxyvitamin D3 (DP001) in patients with end-stage renal disease (ESRD). The effect of 12 weeks of oral administration of DP001 on serum parathyroid hormone (PTH) levels will be evaluated in ESRD patients who have secondary hyperparathyroidism.

Enrollment: 62 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Men and non-pregnant women ≥18 years of age
• Patient is diagnosed with ESRD and must be on hemodialysis 3 times per week for at least 3 months prior to Screening Phase
• Patient is currently being treated with pharmaceutical vitamin D for the treatment of secondary hyperparathyroidism
• Serum iPTH value ≤500 pg/mL at first screening visit
• Total serum calcium (corrected for albumin) ≤10.5 mg/dL at first screening visit
• Serum phosphorus ≤7.0 mg/dL at first screening visit

Exclusion criteria

• Currently taking any of the following: drugs affecting vitamin D metabolism, digitalis, glucocorticoids, cyclosporine or other immunosuppressants, aluminum-based phosphate binders
• A daily intake >4000 IU vitamin D (D3 + D2)
• Any investigational drug use within 10 half-lives of the drug (or within the previous 30 days if the half-life of the drug is unknown)
• History of any of the following: ventricular dysrhythmias, severe congestive heart failure, angina pectoris, myocardial infarction, coronary angioplasty, coronary artery bypass grafting, multiple myeloma, calciphylaxis, active malignancy, end-stage liver disease, active infections, clinically significant renal/urinary tract stones, sarcoidosis, tuberculosis, parathyroidectomy
• Major surgery within the past 3 months

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

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62 participants in 2 patient groups, including a placebo group

DP001

Experimental group

Description:

DP001 softgel capsules, 440 ng taken orally three times weekly after dialysis for 12 weeks

Treatment:

Drug: DP001 softgel capsules

Placebo

Placebo Comparator group

Description:

Placebo softgel capsules, taken orally three times weekly after dialysis for 12 weeks

Treatment:

Drug: Placebo