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Cholecalciferol and Genistein Before Surgery in Treating Patients With Early Stage Prostate Cancer

Phase IIA, Randomized Placebo-Controlled Trial of Single High Dose Cholecalciferol and Daily Genistein (G-2535) Versus Placebo in Men With Early Stage Prostate Cancer Undergoing Prostatectomy

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01325311
Enrollment
15
Registered
2011-03-29
Start date
2011-12-31
Completion date
2014-07-31
Last updated
2016-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Prostate Adenocarcinoma, Stage IIA Prostate Cancer, Stage IIB Prostate Cancer, Stage I Prostate Cancer

Brief summary

This randomized phase II trial studies cholecalciferol and genistein compared to placebo in treating patients with early stage prostate cancer. Cholecalciferol and genistein may slow the growth of cancer cells and may be an effective treatment for prostate cancer.

Detailed description

PRIMARY OBJECTIVES: I. To determine differences in prostate tissue steady state concentrations of calcitriol in participants treated with a single dose cholecalciferol (200,000 IU) and G-2535 (which provides 600 mg of genistein) and those receiving placebo. SECONDARY OBJECTIVES: I. To determine the effect of each intervention arm and resulting prostate tissue levels of calcitriol on down-stream related biomarkers and related mechanistic pathways in blood and tissue. OUTLINE: Patients are randomized to 1 of 2 treatment arms. ARM I: Patients receive cholecalciferol orally (PO) on day 1 and genistein PO once daily (QD) on days 1-21 or 1-28. Patients then undergo prostatectomy. ARM II: Patients receive placebo PO on day 1 and placebo PO QD on days 1-21 or 1-28. Patients then undergo prostatectomy.

Interventions

DRUGCholecalciferol

Given PO

DRUGGenistein

Given PO

OTHERLaboratory Biomarker Analysis

Correlative studies

OTHERPharmacological Study

Correlative studies

OTHERPlacebo

Given PO

Sponsors

National Cancer Institute (NCI)
Lead SponsorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Participants must have microscopic confirmation of adenocarcinoma of the prostate within three months of randomization; clinical stage T1 and T2 a, b, or c are allowed * Participants' prostate cancer must be confined to the prostate (in the clinical judgment of the treating physician) * Participants must be candidates for prostatectomy * Participants must have Eastern Cooperative Oncology Group (ECOG) performance status =\<1 (Karnofsky \>= 70%) * White blood cell (WBC) within normal limits * Platelets \>= 100 K/uL * Hemoglobin \>= 10 g/dL * Thyroid-stimulating hormone (TSH) =\< 4.20 uIU/mL * Free T4 =\< 12.5 ng/dL * Bilirubin within upper limit of normal * Aspartate aminotransferase (AST) =\< 1.5 x upper limit of normal * Creatinine =\< 2.0 mg/dL * Serum calcium: within institutional normal limits * Participants must agree to stop taking nonsteroidal anti-inflammatory drugs (NSAIDS) during the course of the study, however, low dose aspirin (\< 100 mg/day) will be allowed; no wash out period is required * Participants must be willing to discontinue consuming soy products and ingesting vitamin supplements while participating in this study * The effects of cholecalciferol and genistein on the developing human fetus at the recommended therapeutic doses are unknown; for this reason, participants must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) for the duration of study participation * Participants must have the ability to understand and sign a consent form indicating the investigational nature of the treatment and its potential risks

Exclusion criteria

* Participants may not have received any prior therapy for prostate cancer including: chemotherapy, hormonal therapy, brachytherapy, or external radiation * Participants may not be receiving concurrent systemic therapy for other cancers * Participants may not be receiving any other investigational agents * Participants may not be taking the following p450 inducers and inhibitors: carbamazepine, clarithromycin, fluconazole, fosphenytoin, itraconazole, ketoconazole, phenobarbital, phenytoin, rifabutin, rifampin * Participants who took finasteride or dutasteride within 6 months of the pre-randomization biopsy, are currently taking finasteride or dutasteride, or are planning on taking these agents during study participation * Participants with a history of allergic reactions attributed to genistein or placebo, or compounds of similar chemical or biologic composition * Participants with uncontrolled intercurrent illness including, but not limited to ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements * Participants requires thyroid replacement therapy; Note: participants with a history of thyroid disease \> 5 years ago, with current normal thyroid function, will be considered eligible * Participant has current, known nephrolithiasis or a history of nephrolithiasis within the past 5 years * Participant has any history of sarcoidosis

Design outcomes

Primary

MeasureTime frameDescription
Tissue Levels of Calcitriol Between the Placebo and Cholecalciferol/Genistein Armsup to Day 35This is a measure of calcitriol in prostate tissue comparing placebo and cholecalciferol/genistein
Detectability of Calcitriol Levels in Tissue Between the Placebo and Cholecalciferol/Genistein Armsup to 35 daysTo identify the amount of Calcitriol that is found in the tissue comparing Placebo and Cholecalciferol/Genistein

Secondary

MeasureTime frameDescription
PBMC CYP mRNA Expression of CYP24Baseline and Up to Day 35This is a measure of expression of CYP24 in comparing placebo to Cholecalciferol/genistein.
PBMC CYP mRNA Expression of CYP27B1Up to Day 35This is a measure of expression of CYP27B1 in comparing placebo to Cholecalciferol/genistein.
Total PSA in Serumat Baseline and up to Day 35This is a measure of the concentration of PSA in the blood serum at baseline and at the end of study.
Serum Calcium Levels at Baseline and Pre-SurgeryBaseline and Day 35This is a measurement of calcium in the Blood serum at baseline and at the end of the study.
Total IGF-1 in Serum at Baseline and Pre-SurgeryBaseline and up to Day 35This is measuring the concentration of the Biomarker IGF-1 in blood serum at Baseline and at the end of the study.
Levels of Calcidiol in the Participants SerumBaseline and up to day 35This is measuring the amount of Calcidiol that was found in the participants blood Serum at baseline and end of study
Total IGFBP-3 in Serum at Baseline and Pre-SurgeryBaseline and Up to Day 35This is measuring the concentration of the Biomarker IGFBP-3 in blood serum at Baseline and at the end of the study.
Total PTH in Serum at Baseline and Pre-SurgeryBaseline and Up to Day 35This is measuring the concentration of the Biomarker PTH in blood serum at Baseline and at the end of the study
Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)Up to Day 35The Immunohistochemistry measurement for: AR (Nucleus), VDR (Cytoplasm), p21 (Nucleus), PGE2 (Cytoplasm), TUNEL Pos (Nucleus), Caspase 3 (Cytoplasm), PSMA (Cytoplasm), IGF-1 and IGF-2 (Cytoplasm), Akt (Nucleus and Cytoplasm), and pAkt (nucleus and Cytoplasm) This is to serve as normalized control data to determine expression of protein. The normalized optical densities were measured as optical density per unit area by densitometric scanning using Vectra imaging system (Perkin Elmer). This Optical Density is based on fluorescence.
Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)Up to day Day 35The Immunohistochemistry measurement for: AR (Nucleus), VDR (Cytoplasm), p21 (Nucleus), PGE2 (Cytoplasm), TUNEL Pos (Nucleus), Caspase 3 (Cytoplasm), PSMA (Cytoplasm), IGF-1 and IGF-2 (Cytoplasm), Akt (Nucleus and Cytoplasm), and pAkt (nucleus and Cytoplasm) This is to serve as normalized case data to determine expression of protein. The normalized optical densities were measured as optical density per unit area by densitometric scanning using Vectra imaging system (Perkin Elmer). This Optical Density is based on fluorescence.
Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)up to Day 35
Total IGF-2 in Serum at Baseline and Pre-SurgeryBaseline and Up to Day 35This is measuring the concentration of the Biomarker IGF-2 in blood serum at Baseline and at the end of the study
Levels of Calcitriol in Participants Serumbaseline and Up to Day 35This is measuring the amount of Calcitriol that was found in the participants blood Serum at baseline and end of study.

Countries

United States

Participant flow

Participants by arm

ArmCount
Arm II (Placebo)
Patients receive placebo PO on day 1 and placebo PO QD on days 1-21 or 1-28. Patients then undergo prostatectomy. Laboratory Biomarker Analysis: Correlative studies Pharmacological Study: Correlative studies Placebo: Given PO
8
Arm I (Cholecalciferol, Genistein)
Patients receive cholecalciferol PO on day 1 and genistein PO QD on days 1-21 or 1-28. Patients then undergo prostatectomy. Cholecalciferol: Given PO Genistein: Given PO Laboratory Biomarker Analysis: Correlative studies Pharmacological Study: Correlative studies
7
Total15

Baseline characteristics

CharacteristicArm II (Placebo)Arm I (Cholecalciferol, Genistein)Total
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
2 Participants2 Participants4 Participants
Age, Categorical
Between 18 and 65 years
6 Participants5 Participants11 Participants
Age, Continuous60.75 years
STANDARD_DEVIATION 4.5
62.14 years
STANDARD_DEVIATION 4.26
61.40 years
STANDARD_DEVIATION 4.29
Ethnicity (NIH/OMB)
Hispanic or Latino
1 Participants0 Participants1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
7 Participants7 Participants14 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
8 Participants7 Participants15 Participants
Region of Enrollment
United States
8 participants7 participants15 participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants
Sex: Female, Male
Male
8 Participants7 Participants15 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
4 / 85 / 7
serious
Total, serious adverse events
0 / 80 / 7

Outcome results

Primary

Detectability of Calcitriol Levels in Tissue Between the Placebo and Cholecalciferol/Genistein Arms

To identify the amount of Calcitriol that is found in the tissue comparing Placebo and Cholecalciferol/Genistein

Time frame: up to 35 days

ArmMeasureGroupValue (NUMBER)
Arm II (Placebo)Detectability of Calcitriol Levels in Tissue Between the Placebo and Cholecalciferol/Genistein ArmsUndetectable7 participants
Arm II (Placebo)Detectability of Calcitriol Levels in Tissue Between the Placebo and Cholecalciferol/Genistein ArmsDetectable1 participants
Arm I (Cholecalciferol, Genistein)Detectability of Calcitriol Levels in Tissue Between the Placebo and Cholecalciferol/Genistein ArmsUndetectable6 participants
Arm I (Cholecalciferol, Genistein)Detectability of Calcitriol Levels in Tissue Between the Placebo and Cholecalciferol/Genistein ArmsDetectable1 participants
Primary

Tissue Levels of Calcitriol Between the Placebo and Cholecalciferol/Genistein Arms

This is a measure of calcitriol in prostate tissue comparing placebo and cholecalciferol/genistein

Time frame: up to Day 35

ArmMeasureValue (MEAN)Dispersion
Arm II (Placebo)Tissue Levels of Calcitriol Between the Placebo and Cholecalciferol/Genistein Arms0.045 ng/mLStandard Deviation 0.127
Arm I (Cholecalciferol, Genistein)Tissue Levels of Calcitriol Between the Placebo and Cholecalciferol/Genistein Arms0.057 ng/mLStandard Deviation 0.15
Comparison: Using the Student t-test. If the normality assumption is tenuous, an appropriate transformation of the data such as logarithm will be considered for Student t-test or a nonparametric test such as Wilcoxon rank-sum test will be used for comparison.p-value: 0.922t-test, 2 sided
Secondary

Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)

The Immunohistochemistry measurement for: AR (Nucleus), VDR (Cytoplasm), p21 (Nucleus), PGE2 (Cytoplasm), TUNEL Pos (Nucleus), Caspase 3 (Cytoplasm), PSMA (Cytoplasm), IGF-1 and IGF-2 (Cytoplasm), Akt (Nucleus and Cytoplasm), and pAkt (nucleus and Cytoplasm) This is to serve as normalized control data to determine expression of protein. The normalized optical densities were measured as optical density per unit area by densitometric scanning using Vectra imaging system (Perkin Elmer). This Optical Density is based on fluorescence.

Time frame: Up to Day 35

ArmMeasureGroupValue (MEAN)Dispersion
Arm II (Placebo)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)p21 (Nucleus)-0.085 Normalized Optical DensityStandard Deviation 1.07
Arm II (Placebo)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)IGF-1 (Cytoplasm)-0.295 Normalized Optical DensityStandard Deviation 0.607
Arm II (Placebo)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)TUNEL Pos (Nucleus)-0.168 Normalized Optical DensityStandard Deviation 0.842
Arm II (Placebo)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)IGF-2 (Cytoplasm)-0.335 Normalized Optical DensityStandard Deviation 0.763
Arm II (Placebo)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)VDR (Cytoplasm)-0.451 Normalized Optical DensityStandard Deviation 0.41
Arm II (Placebo)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)Akt (Nucleus)-0.316 Normalized Optical DensityStandard Deviation 0.618
Arm II (Placebo)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)Caspase 3 (Cytoplasm)-0.308 Normalized Optical DensityStandard Deviation 0.659
Arm II (Placebo)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)pAkt (Nucleus)-0.114 Normalized Optical DensityStandard Deviation 0.92
Arm II (Placebo)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)PGE2 (Cytoplasm)-0.161 Normalized Optical DensityStandard Deviation 1.023
Arm II (Placebo)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)Akt (Cytoplasm)-0.249 Normalized Optical DensityStandard Deviation 0.766
Arm II (Placebo)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)PSMA (Cytoplasm)0.025 Normalized Optical DensityStandard Deviation 1.231
Arm II (Placebo)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)pAkt (Cytoplasm)-0.053 Normalized Optical DensityStandard Deviation 1.004
Arm II (Placebo)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)AR (Nucleus)-0.362 Normalized Optical DensityStandard Deviation 0.294
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)pAkt (Cytoplasm)0.061 Normalized Optical DensityStandard Deviation 0.991
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)AR (Nucleus)0.414 Normalized Optical DensityStandard Deviation 1.301
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)VDR (Cytoplasm)0.515 Normalized Optical DensityStandard Deviation 1.179
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)p21 (Nucleus)0.097 Normalized Optical DensityStandard Deviation 0.9
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)PGE2 (Cytoplasm)0.184 Normalized Optical DensityStandard Deviation 0.934
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)TUNEL Pos (Nucleus)0.192 Normalized Optical DensityStandard Deviation 1.122
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)Caspase 3 (Cytoplasm)0.352 Normalized Optical DensityStandard Deviation 1.178
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)PSMA (Cytoplasm)-0.029 Normalized Optical DensityStandard Deviation 0.63
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)IGF-1 (Cytoplasm)0.337 Normalized Optical DensityStandard Deviation 1.22
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)IGF-2 (Cytoplasm)0.383 Normalized Optical DensityStandard Deviation 1.081
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)Akt (Nucleus)0.361 Normalized Optical DensityStandard Deviation 1.198
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)pAkt (Nucleus)0.131 Normalized Optical DensityStandard Deviation 1.068
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Benign Prostate Tissue (BPT)Akt (Cytoplasm)0.284 Normalized Optical DensityStandard Deviation 1.142
Secondary

Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)

The Immunohistochemistry measurement for: AR (Nucleus), VDR (Cytoplasm), p21 (Nucleus), PGE2 (Cytoplasm), TUNEL Pos (Nucleus), Caspase 3 (Cytoplasm), PSMA (Cytoplasm), IGF-1 and IGF-2 (Cytoplasm), Akt (Nucleus and Cytoplasm), and pAkt (nucleus and Cytoplasm) This is to serve as normalized case data to determine expression of protein. The normalized optical densities were measured as optical density per unit area by densitometric scanning using Vectra imaging system (Perkin Elmer). This Optical Density is based on fluorescence.

Time frame: Up to day Day 35

Population: Due to sample in Arm II one participants data was not analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Arm II (Placebo)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)PSMA (Cytoplasm)-0.210 Normalized Optical DensityStandard Deviation 0.966
Arm II (Placebo)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)PGE2 (Cytoplasm)-0.135 Normalized Optical DensityStandard Deviation 0.969
Arm II (Placebo)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)IGF-1 (Cytoplasm)0.155 Normalized Optical DensityStandard Deviation 1.027
Arm II (Placebo)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)AR (Nucleus)-0.563 Normalized Optical DensityStandard Deviation 0.481
Arm II (Placebo)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)IGF-2 (Cytoplasm)0.443 Normalized Optical DensityStandard Deviation 1.102
Arm II (Placebo)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)Akt (Nucleus)-0.309 Normalized Optical DensityStandard Deviation 0.903
Arm II (Placebo)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)TUNEL Pos (Nucleus)-0.363 Normalized Optical DensityStandard Deviation 0.664
Arm II (Placebo)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)pAkt (Nucleus)-0.291 Normalized Optical DensityStandard Deviation 0.325
Arm II (Placebo)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)p21 (Nucleus)-0.185 Normalized Optical DensityStandard Deviation 0.489
Arm II (Placebo)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)Akt (Cytoplasm)-0.379 Normalized Optical DensityStandard Deviation 0.785
Arm II (Placebo)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)Caspase 3 (Cytoplasm)-0.103 Normalized Optical DensityStandard Deviation 0.742
Arm II (Placebo)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)pAkt (Cytoplasm)-0.365 Normalized Optical DensityStandard Deviation 0.377
Arm II (Placebo)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)VDR (Cytoplasm)-0.281 Normalized Optical DensityStandard Deviation 0.657
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)pAkt (Cytoplasm)0.365 Normalized Optical DensityStandard Deviation 1.244
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)AR (Nucleus)0.563 Normalized Optical DensityStandard Deviation 1.015
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)VDR (Cytoplasm)0.281 Normalized Optical DensityStandard Deviation 1.177
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)p21 (Nucleus)0.185 Normalized Optical DensityStandard Deviation 1.296
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)PGE2 (Cytoplasm)0.135 Normalized Optical DensityStandard Deviation 1.009
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)TUNEL Pos (Nucleus)0.363 Normalized Optical DensityStandard Deviation 1.119
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)Caspase 3 (Cytoplasm)0.103 Normalized Optical DensityStandard Deviation 1.194
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)PSMA (Cytoplasm)0.210 Normalized Optical DensityStandard Deviation 0.982
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)IGF-1 (Cytoplasm)-0.155 Normalized Optical DensityStandard Deviation 0.943
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)Akt (Nucleus)0.309 Normalized Optical DensityStandard Deviation 0.981
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)pAkt (Nucleus)0.291 Normalized Optical DensityStandard Deviation 1.302
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)Akt (Cytoplasm)0.379 Normalized Optical DensityStandard Deviation 1.024
Arm I (Cholecalciferol, Genistein)Immunohistochemistry Measurements in Prostate Cancer Tissue (PCA)IGF-2 (Cytoplasm)-0.443 Normalized Optical DensityStandard Deviation 0.572
Secondary

Levels of Calcidiol in the Participants Serum

This is measuring the amount of Calcidiol that was found in the participants blood Serum at baseline and end of study

Time frame: Baseline and up to day 35

Population: Due to sample one participant in Arm 1 was not analyzed for this Outcome.

ArmMeasureGroupValue (MEAN)Dispersion
Arm II (Placebo)Levels of Calcidiol in the Participants SerumBaseline20.5 ng/mLStandard Deviation 5.5
Arm II (Placebo)Levels of Calcidiol in the Participants SerumPre-Surgery19.2 ng/mLStandard Deviation 5.1
Arm I (Cholecalciferol, Genistein)Levels of Calcidiol in the Participants SerumBaseline24.5 ng/mLStandard Deviation 9.3
Arm I (Cholecalciferol, Genistein)Levels of Calcidiol in the Participants SerumPre-Surgery27.3 ng/mLStandard Deviation 10
Secondary

Levels of Calcitriol in Participants Serum

This is measuring the amount of Calcitriol that was found in the participants blood Serum at baseline and end of study.

Time frame: baseline and Up to Day 35

Population: Due to sample one participant in Arm 1 was not analyzed for this Outcome.

ArmMeasureGroupValue (MEAN)Dispersion
Arm II (Placebo)Levels of Calcitriol in Participants SerumBaseline0.5 ng/mLStandard Deviation 0.1
Arm II (Placebo)Levels of Calcitriol in Participants SerumPre-Surgery0.5 ng/mLStandard Deviation 0.7
Arm I (Cholecalciferol, Genistein)Levels of Calcitriol in Participants SerumBaseline0.5 ng/mLStandard Deviation 0.2
Arm I (Cholecalciferol, Genistein)Levels of Calcitriol in Participants SerumPre-Surgery0.1 ng/mLStandard Deviation 0.4
Secondary

PBMC CYP mRNA Expression of CYP24

This is a measure of expression of CYP24 in comparing placebo to Cholecalciferol/genistein.

Time frame: Baseline and Up to Day 35

Population: Due to sample two participant in Arm I and 2 participants in Arm II were not analyzed for this Outcome.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Arm II (Placebo)PBMC CYP mRNA Expression of CYP243.054 Ratio to BaselineStandard Deviation 3.997
Arm I (Cholecalciferol, Genistein)PBMC CYP mRNA Expression of CYP242.202 Ratio to BaselineStandard Deviation 4.071
Secondary

PBMC CYP mRNA Expression of CYP27B1

This is a measure of expression of CYP27B1 in comparing placebo to Cholecalciferol/genistein.

Time frame: Up to Day 35

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Arm II (Placebo)PBMC CYP mRNA Expression of CYP27B11.656 Ratio to BaselineStandard Deviation 2.628
Arm I (Cholecalciferol, Genistein)PBMC CYP mRNA Expression of CYP27B12.389 Ratio to BaselineStandard Deviation 3.511
Secondary

Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)

Time frame: up to Day 35

ArmMeasureGroupValue (NUMBER)
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2762939- C/G37.5 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2296241- A/A37.5 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2762939- G/G62.5 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2248359- C/T37.5 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs927650- C/C0 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2209314- T/T62.5 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs927650- C/T50 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2248359- T/T25 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs927650- T/T50 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2296241- A/G35.5 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs703842- A/A50 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2209314- T/C37.5 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs703842- A/G37.5 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2296241- G/G25 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs703842- G/G12.5 percentage of participants
Arm II (Placebo)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2248359- C/C37.5 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs703842- G/G14.29 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2296241- A/A14.29 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2209314- T/C42.86 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2209314- T/T57.14 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2248359- C/C42.86 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2248359- C/T57.14 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2296241- A/G71.43 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2296241- G/G14.29 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2762939- C/G28.57 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2762939- G/G71.43 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs927650- C/C71.43 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs927650- C/T14.29 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs927650- T/T14.29 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs703842- A/A14.29 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs703842- A/G71.43 percentage of participants
Arm I (Cholecalciferol, Genistein)Percent of Participants With CYP24 and CYP27B1 SNPs (DNA From Paxgene)rs2248359- T/T0 percentage of participants
Secondary

Serum Calcium Levels at Baseline and Pre-Surgery

This is a measurement of calcium in the Blood serum at baseline and at the end of the study.

Time frame: Baseline and Day 35

Population: Due to sample one participant in Arm I was not analyzed for this Outcome.

ArmMeasureGroupValue (MEAN)Dispersion
Arm II (Placebo)Serum Calcium Levels at Baseline and Pre-SurgeryBaseline10.5 ng/mL (absolute change)Standard Deviation 0.4
Arm II (Placebo)Serum Calcium Levels at Baseline and Pre-SurgeryDay 3510.8 ng/mL (absolute change)Standard Deviation 0.9
Arm I (Cholecalciferol, Genistein)Serum Calcium Levels at Baseline and Pre-SurgeryBaseline11.3 ng/mL (absolute change)Standard Deviation 1.8
Arm I (Cholecalciferol, Genistein)Serum Calcium Levels at Baseline and Pre-SurgeryDay 3510.9 ng/mL (absolute change)Standard Deviation 0.9
Secondary

Total IGF-1 in Serum at Baseline and Pre-Surgery

This is measuring the concentration of the Biomarker IGF-1 in blood serum at Baseline and at the end of the study.

Time frame: Baseline and up to Day 35

Population: Due to sample one participant in Arm I was not analyzed for this Outcome.

ArmMeasureGroupValue (MEAN)Dispersion
Arm II (Placebo)Total IGF-1 in Serum at Baseline and Pre-SurgeryBaseline64.2 ng/mLStandard Deviation 11.5
Arm II (Placebo)Total IGF-1 in Serum at Baseline and Pre-SurgeryDay 3560.6 ng/mLStandard Deviation 17.9
Arm I (Cholecalciferol, Genistein)Total IGF-1 in Serum at Baseline and Pre-SurgeryBaseline66.3 ng/mLStandard Deviation 12.8
Arm I (Cholecalciferol, Genistein)Total IGF-1 in Serum at Baseline and Pre-SurgeryDay 3574.6 ng/mLStandard Deviation 14
Secondary

Total IGF-2 in Serum at Baseline and Pre-Surgery

This is measuring the concentration of the Biomarker IGF-2 in blood serum at Baseline and at the end of the study

Time frame: Baseline and Up to Day 35

Population: Due to sample one participant in Arm 1 was not analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Arm II (Placebo)Total IGF-2 in Serum at Baseline and Pre-SurgeryBaseline770.4 ng/mLStandard Deviation 333.4
Arm II (Placebo)Total IGF-2 in Serum at Baseline and Pre-SurgeryPre-Surgery605.0 ng/mLStandard Deviation 175.4
Arm I (Cholecalciferol, Genistein)Total IGF-2 in Serum at Baseline and Pre-SurgeryPre-Surgery858.8 ng/mLStandard Deviation 112.7
Arm I (Cholecalciferol, Genistein)Total IGF-2 in Serum at Baseline and Pre-SurgeryBaseline805.9 ng/mLStandard Deviation 193.5
Secondary

Total IGFBP-3 in Serum at Baseline and Pre-Surgery

This is measuring the concentration of the Biomarker IGFBP-3 in blood serum at Baseline and at the end of the study.

Time frame: Baseline and Up to Day 35

Population: Due to sample one participant from Arm 1 was not analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Arm II (Placebo)Total IGFBP-3 in Serum at Baseline and Pre-SurgeryDay 351667.5 ng/mLStandard Deviation 788.9
Arm II (Placebo)Total IGFBP-3 in Serum at Baseline and Pre-SurgeryBaseline1838.9 ng/mLStandard Deviation 887.3
Arm I (Cholecalciferol, Genistein)Total IGFBP-3 in Serum at Baseline and Pre-SurgeryDay 351843.4 ng/mLStandard Deviation 443.3
Arm I (Cholecalciferol, Genistein)Total IGFBP-3 in Serum at Baseline and Pre-SurgeryBaseline2004.5 ng/mLStandard Deviation 309.8
Secondary

Total PSA in Serum

This is a measure of the concentration of PSA in the blood serum at baseline and at the end of study.

Time frame: at Baseline and up to Day 35

Population: Due to sample one participant in Arm I was not analyzed for this Outcome.

ArmMeasureGroupValue (MEDIAN)Dispersion
Arm II (Placebo)Total PSA in SerumBaseline8.7 ng/mLStandard Deviation 7.3
Arm II (Placebo)Total PSA in SerumDay 358.3 ng/mLStandard Deviation 6.7
Arm I (Cholecalciferol, Genistein)Total PSA in SerumBaseline6.3 ng/mLStandard Deviation 1.7
Arm I (Cholecalciferol, Genistein)Total PSA in SerumDay 355.8 ng/mLStandard Deviation 2.1
Secondary

Total PTH in Serum at Baseline and Pre-Surgery

This is measuring the concentration of the Biomarker PTH in blood serum at Baseline and at the end of the study

Time frame: Baseline and Up to Day 35

Population: Due to sample one participant in Arm I was not analyzed.

ArmMeasureGroupValue (MEAN)Dispersion
Arm II (Placebo)Total PTH in Serum at Baseline and Pre-SurgeryBaseline143.4 ng/mLStandard Deviation 26.5
Arm II (Placebo)Total PTH in Serum at Baseline and Pre-SurgeryPre-Surgery151.1 ng/mLStandard Deviation 25.8
Arm I (Cholecalciferol, Genistein)Total PTH in Serum at Baseline and Pre-SurgeryBaseline144.8 ng/mLStandard Deviation 37.8
Arm I (Cholecalciferol, Genistein)Total PTH in Serum at Baseline and Pre-SurgeryPre-Surgery136.5 ng/mLStandard Deviation 72.9

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026