Breast Neoplasms Clinical Trial
Official title:
A Pilot Study of the Effects of High-Dose Oral Calcitriol and Physical Activity on Bone Health in Breast Cancer Survivors
Verified date | April 2019 |
Source | University of Rochester |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
Both the calcitriol and exercise interventions are aimed at reducing fracture risk by
maintaining proper bone density, thereby preventing osteoporotic/osteopenic conditions and
increasing muscle mass. Both calcitriol and exercise are efficacious in maintaining proper
bone health and muscle mass among the general population, but little research has been done
on breast cancer patients and survivors. The combination of calcitriol and exercise, which
function through different but similar mechanisms, could produce interactive effects in
reducing fracture risk among breast cancer survivors.
Hypothesis: A combination of calcitriol along with a structured home-based walking and
progressive resistance exercise program will be efficacious in preventing bone resorption and
in increasing bone formation among survivors of invasive breast cancer.
Status | Completed |
Enrollment | 41 |
Est. completion date | January 1, 2018 |
Est. primary completion date | January 1, 2018 |
Accepts healthy volunteers | No |
Gender | Female |
Age group | 18 Years and older |
Eligibility |
Inclusion Criteria: - Must be female. - Women of child-bearing potential (i.e. women who are pre-menopausal or not surgically sterile) must use acceptable contraceptive methods (abstinence, intrauterine device (IUD), or double barrier device) and must have a negative serum or urine pregnancy test within 1 week prior to beginning treatment on this trial. Contraceptive use needs to be continued at least 1 month after the trial has ended. - Must provide informed consent. - Must be willing to discontinue use of calcium and/or vitamin D supplements. - Participants must have an ionized serum calcium level within normal limits (1.19-1.29mmol/L) and a total corrected serum calcium of < 10.2mg/dl. - Must have a functional capacity rating of = 2 on the Eastern Cooperative Oncology Group (ECOG) performance status when assessed at baseline. - Must have the approval of their treating physician (or physician's nurse practitioner or physician's assistant) to participate in sub-maximal physiological fitness testing and a low to moderate home-based walking and progressive resistance exercise program and to receive the 12-week supplementation of calcitriol 45 µg. Participants assigned to either of the calcitriol treatment arms will be instructed to stop taking calcium and/or vitamin D supplements. - Must be less than five years from the diagnosis of breast cancer and have received chemotherapy, radiation therapy, and/or hormonal therapy. Chemotherapy and radiation therapy, if received, must have been completed prior to study enrollment. Hormonal therapy may be ongoing. Exclusion Criteria: - Subjects with life-threatening conditions that would preclude them from breast cancer treatment including chronic cardiac failure, which is unstable despite medication use, uncontrolled hypertension, uncontrolled diabetes mellitus, or unstable coronary artery disease. - Patients who had a myocardial infarction within the past year. - Patients with severe metabolic disorders, which includes phenylketonuria (PKU), homocystinuria, and Fabry's disease, that would preclude them from taking calcitriol. - Patients with impaired renal function (CRCL < 60 mL/min) or who had kidney stones (calcium salt) within the past 5 years. - Patients with hypercalcemia (corrected serum Ca > 10.2 mg/dl) or a history of hypercalcemia or vitamin D toxicity. - Patients currently taking calcium supplements or aluminum-based antacids must be willing to discontinue their use if they are to enroll in the study. - Patients currently taking vitamin D supplements must immediately discontinue their use if they are to enroll in the study. - Patients with a known sensitivity to calcitriol. - Women who are pregnant or lactating. - Previously verified diagnosed of osteoporosis. - Women on antiresorptive drugs (e.g. bisphosphonates) within the past year. - Patients not capable of participating in an exercise intervention due to severe knee arthrosis or ligament/cartilage injuries of the lower extremities. - Women currently using oral contraception. - Women with malabsorptive syndromes (i.e. cystic fibrosis, chronic pancreatitis) or taking medications that decrease the absorption of fat soluble vitamins (i.e. Orlistat, Questran). - Participants assigned to calcitriol who are routinely taking a multivitamin supplement may continue the supplement as long as the amount of vitamin D in the supplement is not in excess of the RDA (recommended daily allowance) of 400 IU or 10 µg. If they are not taking a multivitamin supplement, they will be asked to not start supplementation while on study. |
Country | Name | City | State |
---|---|---|---|
United States | University of Rochester Medical Center | Rochester | New York |
Lead Sponsor | Collaborator |
---|---|
University of Rochester |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Bone Resorption (Exercise) | Bone Resorption using Serum NTx (Exercise comparison) Serum NTx level is used to aid in predicting skeletal response (bone mineral density) to antiresorptive therapy and in monitoring bone resorption changes following initiation of antiresorptive therapy. Elevated levels of serum NTx indicate elevated bone resorption. Elevated bone resorption is the primary cause of agerelated bone loss and that low bone mass often results in osteopenia and is the major cause of osteoporosis. The measurement range is in nanoMoles (NM) Bone Collagen Equivalents (BCE). |
Week 12 | |
Primary | Bone Resorption (Calcitriol) | Bone Resorption using Serum NTx (Calcitriol comparison) Serum NTx level is used to aid in predicting skeletal response (bone mineral density) to antiresorptive therapy and in monitoring bone resorption changes following initiation of antiresorptive therapy. Elevated levels of serum NTx indicate elevated bone resorption. Elevated bone resorption is the primary cause of agerelated bone loss and that low bone mass often results in osteopenia and is the major cause of osteoporosis. The measurement range is in nanoMoles (nm) Bone Collagen Equivalents (BCE). |
Week 12 | |
Primary | Bone Formation (Exercise) | Bone Formation using Serum BSAP (Exercise comparison) The Bone-Specific Alkaline Phosphatase (BSAP) assay provides a general index of bone formation and a specific index of total osteoblast activity. BSAP and osteocalcin are the most effective markers of bone formation and are particularly useful for monitoring bone formation therapies and antiresorptive therapies. |
Week 12 | |
Primary | Bone Formation (Calcitriol) | Bone Formation using Serum BSAP (Calcitriol comparison) The Bone-Specific Alkaline Phosphatase (BSAP) assay provides a general index of bone formation and a specific index of total osteoblast activity. BSAP and osteocalcin are the most effective markers of bone formation and are particularly useful for monitoring bone formation therapies and antiresorptive therapies. |
Week 12 | |
Secondary | Handgrip (kg) Strength - (Exercise) | Handgrip (kg) Strength (Exercise comparison) Hand grip strength can be quantified by measuring the amount of static force that the hand can squeeze around a dynamometer. It is typically measured in kilograms or pounds and varies by sex and age. Normative data for females is AGE 35-39 --> 20.3-34.1kg; AGE 40-44 --> 18.9-32.7kg; AGE 45-49 --> 18.6-32.4kg; AGE 50-54 --> 18.1-31.9kg; AGE 55-59 --> 17.7-31.5kg; AGE 60-64 --> 17.2-31.0kg; AGE 65-69 --> 15.4-27.2kg; AGE 70-99 --> 14.7-24.5kg. Values less than the normal range are considered weak strength. Values greater than the normal range are considered strong strength. |
Week 12 | |
Secondary | Handgrip (kg) Strength - (Calcitriol) | Handgrip (kg) Strength - (Calcitriol comparison) Hand grip strength can be quantified by measuring the amount of static force that the hand can squeeze around a dynamometer. It is typically measured in kilograms or pounds and varies by sex and age. Normative data for females is AGE 35-39 --> 20.3-34.1kg; AGE 40-44 --> 18.9-32.7kg; AGE 45-49 --> 18.6-32.4kg; AGE 50-54 --> 18.1-31.9kg; AGE 55-59 --> 17.7-31.5kg; AGE 60-64 --> 17.2-31.0kg; AGE 65-69 --> 15.4-27.2kg; AGE 70-99 --> 14.7-24.5kg. Values less than the normal range are considered weak strength. Values greater than the normal range are considered strong strength. |
Week 12 | |
Secondary | Body Mass Index (Exercise) | Body Mass Index (BMI) - (Exercise Comparison) Measure Description: Body Mass Index (BMI) is a person's weight in kilograms divided by the square of height in meters. Values below 18.5 represent "Underweight", 18.5 to 24.9 represent "Normal or Healthy Weight", 25.0 to 29.9 represent "Overweight" and 30.0 and above represent "Obese". |
Week 12 | |
Secondary | Body Mass Index (Calcitriol) | Body Mass Index(BMI) - (Calcitriol comparison) Measure Description: Body Mass Index (BMI) is a person's weight in kilograms divided by the square of height in meters. Values below 18.5 represent "Underweight", 18.5 to 24.9 represent "Normal or Healthy Weight", 25.0 to 29.9 represent "Overweight" and 30.0 and above represent "Obese". |
Week 12 |
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