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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT02274623
Other study ID # CTAP101-CL-1017
Secondary ID
Status Completed
Phase Phase 1
First received
Last updated
Start date December 2014
Est. completion date March 17, 2017

Study information

Verified date September 2019
Source OPKO Health, Inc.
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This is an open-label exploratory study of CTAP101 Capsules in patients with bone metastases arising from either breast or prostate cancer, who are taking anti-resorptive therapy.


Description:

This is a multi-center, open-label, repeat-dose study to evaluate the safety, efficacy, and tolerability of CTAP101 Capsules in subjects with bone metastases who are receiving ongoing therapy with denosumab or zoledronic acid. Following screening, approximately 12 eligible subjects with breast cancer and approximately 12 eligible subjects with prostate cancer, all of whom have metastases to bone and are undergoing treatment with anti-resorptive therapies, will receive CTAP101 Capsules at an initial daily oral dose of 30 μg (1 capsule) for 4 weeks. The daily dose may be increased in 30 μg (1 capsule) increments at 4-week intervals to a maximum of 300 μg or until serum calcium reaches >10.3 mg/dL for two consecutive visits (dose escalation phase) at which time the subject will suspend dosing until serum calcium is ≤10.0 mg/dL and will directly enter a 12-week maintenance phase, resuming treatment at a reduced daily dose, followed by a 2-week follow-up period. Subjects reaching the maximum dose without serum calcium reaching >10.3 mg/dL, will directly enter the 12-week maintenance phase, followed by a 2-week follow-up period. Serum markers for monitoring bone metabolism (including plasma iPTH, PTHrP, and serum free calcifediol), immune function and tumor burden will be measured during the treatment period. The FACT-BP Quality of Life Measurement in Patients with Bone Pain questionnaire will be used to explore the effect of the treatment, if any, on musculoskeletal pain. The genotype of vitamin D binding protein (DBP) will also be determined. Safety will be monitored through adverse events, serum and urine chemistries, hematology, and ECGs.


Recruitment information / eligibility

Status Completed
Enrollment 33
Est. completion date March 17, 2017
Est. primary completion date February 27, 2017
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

- Be diagnosed with bone metastases subsequent to breast (female subjects only) or prostate carcinoma, and will have received zoledronate or denosumab therapy for at least 3 months at the time of enrollment

- Be at least 18 years of age

- Have a life expectancy >12 months from the anticipated time of initiation of treatment

- Serum calcium <9.8 mg/dL

- Plasma iPTH =70 pg/mL if taking <1200 IU vitamin D

- Estimated glomerular filtration rate (GFR) >15 mL/min/1.73m2

- If taking more than 1000 mg/day of elemental calcium, must be willing and able to discontinue or reduce their calcium use and/or use non-calcium based therapies for the duration of the study

- Subjects receiving =2000 IU/day vitamin D (ergocalciferol or cholecalciferol) therapy must remain on a stable dose during the study. If taking more than 2000 IU/day of vitamin D (ergocalciferol or cholecalciferol), must be willing and able to reduce use to =2000 IU/day and remain on a stable dose for the duration of the study

- Is willing and able to comply with study instructions and commit to all clinic visits for the duration of the study

- Female subject of childbearing potential is neither pregnant nor lactating and must have a negative pregnancy test at the screen visit and a negative pregnancy test before dosing. All female subjects of childbearing potential and male subjects with female partners of childbearing potential must agree to use effective contraception (eg, implants, injectables, combined oral contraceptives, intrauterine device (IUD), sexual abstinence, vasectomy or vasectomized partner) for the duration of the study

- Has the ability to read and understand subject Informed Consent Form (ICF).

Exclusion Criteria:

- Spot urine Ca:Cr ratio >0.25 (>250 mg/g creatinine)

- Known previous or concomitant serious illness (other than advanced cancer with metastatic bone disease) or medical condition, such as, HIV, significant gastrointestinal disease, or cardiovascular event that in the opinion of the investigator may worsen and/or interfere with participation in the study

- History of neurological/psychiatric disorder, including psychotic disorder or dementia, or any other reason, which in the opinion of the investigator makes adherence to a treatment or follow-up schedule unlikely

- Known or suspected hypersensitivity to any of the constituents of the investigational product

Study Design


Intervention

Drug:
CTAP101 Capsules
escalating doses

Locations

Country Name City State
United States Roswell Park Cancer Institute Buffalo New York
United States University of Cincinnati Cancer Institute Cincinnati Ohio
United States Research by Design LLC Evergreen Park Illinois
United States Inova Dwight and Martha Schar Cancer Center Fairfax Virginia
United States Coast Hematology-Oncology Associates Long Beach California
United States Mount Sinai Medical Center, Comprehensive Cancer Center Miami Florida

Sponsors (1)

Lead Sponsor Collaborator
OPKO Health, Inc.

Country where clinical trial is conducted

United States, 

Outcome

Type Measure Description Time frame Safety issue
Primary Effect of repeated, escalating doses of CTAP101 on serum calcium and plasma iPTH levels up to 52 weeks
Primary Effect of repeated, escalating daily doses of CTAP101 on serum calcifediol up to 52 weeks
Primary Safety and tolerability of CTAP101 Measured by the number of participants with treatment related adverse events and abnormal physical examinations, vital signs, clinical laboratory tests (hematology, coagulation, and clinical chemistry, urine calcium, albumin and creatinine), and 12-lead ECG. up to 52 weeks
Secondary Effect of repeated, escalating daily doses of CTAP101 on vitamin d metabolites up to 52 weeks
Secondary Effect of repeated, escalating doses of CTAP101 on serum phosphorus and spot urine calcium:creatinine ratio up to 52 weeks
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