Calcium-41 (41Ca) Chloride Aqueous Solution in Diagnosing Patients With Prostate Cancer and Bone Metastasis (UCDCC#217)

University of California (UC) Davis

Status

Terminated

Conditions

Metastatic Cancer

Prostate Cancer

Treatments

Drug: 41 Ca

Study type

Interventional

Funder types

Other

NIH

Identifiers

NCT00918645

CDR0000628784

UCDCC-217 (Other Identifier)

P30CA093373 (U.S. NIH Grant/Contract)

R21CA127671 (U.S. NIH Grant/Contract)

Details and patient eligibility

About

RATIONALE: Diagnostic procedures, such as radionuclide imaging using calcium-41 (41Ca) chloride aqueous solution, may help predict progressive disease in patients with prostate cancer and bone metastasis.

PURPOSE: This clinical trial is studying how well calcium-41 (41Ca) chloride aqueous solution works in diagnosing patients with prostate cancer and bone metastasis.

Full description

OBJECTIVES:

Primary

To measure the pharmacokinetics of a single oral dose of calcium-41 (41Ca) chloride aqueous solution (^41Ca) over 18 months in patients with hormone-refractory prostate cancer and bone metastasis.
To correlate the ^41Ca-tracer kinetics with time to disease progression, skeletal-related events, and death.

Secondary

To correlate modulations in baseline urinary ^41Ca clearance with changes in clinically relevant disease parameters, including isotope bone scan data and PSA.
To combine bone turnover assessments with ^41Ca and collagen/bone cell biomarkers with clinical imaging techniques, especially isotope bone scans, to provide improved stratification of disease stage.

OUTLINE: Patients receive oral calcium-41 (41Ca) chloride aqueous solution (^41Ca) on day 1. Some patients also receive oral calcium-46 (46Ca) chloride aqueous solution (^46Ca).

Urine and blood specimens are collected periodically for 18 months. Blood samples are assayed for bone collagen residues, bone alkaline phosphatase, and PSA. Urine specimens are assessed for ^41Ca/Ca. Isotope bone scintigraphy is use to measure radioactivity.

After completion of study treatment, patients are followed up periodically for 3 years.

Enrollment

13 patients

Sex

Male

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion and exclusion criteria

Eligibility Criteria

Histologically or cytologically confirmed prostate cancer with a Gleason score available or interpretable
Prostate cancer deemed to be hormone refractory or androgen independent within the past 12 months
Evidence of bony metastasis
Either be receiving bisphosphonate therapy or have received a bisphosphonate within the last 18 months. Participants who are on not on bisphosphonate therapy nor have received it within the last 18 months should currently be on Denosumab therapy. All other anti-cancer therapies are allowed.
Age >18 years
ECOG performance status 0-2 (Karnofsky >50%).
Life expectancy of 6 months or greater.
Investigators are encouraged to follow good medical practice to assure that all participants have adequate hematologic, hepatic, and renal function.
Recent or planned isotope bone scan, within 12 months prior to enrollment.
Ability to understand and the willingness to sign a written informed consent document.

Exclusion Criteria

Participants will be excluded who have experienced a severe skeletal related event (SRE)within the past 3 months. For this study, an SRE consists of any of the following: palliative radiotherapy to bone, pathologic fractures, spinal cord compression, hypercalcemia of malignancy, and surgery to bone to treat or prevent a fracture.
Uncontrolled intercurrent illness including, but not limited to ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, interstitial lung disease, chronic kidney disease, hyperthyroidism, or psychiatric illness/social situations that would limit compliance with study requirements.
Corrected serum calcium <8.0 mg/dL (2.0 mmol/L) or ≥12.0 mg/dL (3.0 mmol/L)