| Primary | Cell Proliferation in the Prostatectomy Tissue as Assessed by Ki67 Expression Using Immunohistochemistry (IHC) | Data between the two study groups will be compared using a two-group t-test at a two-sided 0.05 level of significance. If the data are not normally distributed, a non-parametric rank-sum test will be utilized. | Participants with tissue sections available from prostatectomy | Posted | | Median | Inter-Quartile Range | % positively stained nuclei | | 12 weeks | | | | ID | Title | Description |
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| OG000 | Arm I (Metformin Hydrochloride) | Patients receive extended-release metformin hydrochloride PO QD (one 500 mg metformin tablet daily for the first week, followed by two 500 mg metformin tablets daily for the second week, and then three 500 mg metformin tablets daily until the day before surgery) for 4-12 weeks. | | OG001 | Arm II (Placebo) | Patients receive placebo PO QD (one placebo tablet daily for the first week, followed by two placebo tablets daily for the second week, and then three placebo tablets daily until the day before surgery) for 4-12 weeks. |
| | | Title | Denominators | Categories |
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| | | Title | Measurements |
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| - OG0006.5(3.33 to 9.33)
- OG0013.67(2 to 6)
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| | Group IDs | Group Description | Statistical Method | Statistical Comment | P-Value | P-Value Comment | Parameter Type | Parameter Value | Dispersion Type | Dispersion Value | Confidence Interval Sides | Confidence Interval % | CI Lower Limit | CI Upper Limit | CI Lower Limit Comment | CI Upper Limit Comment | Estimate Comment | Tested Non-Inferiority | Non-Inferiority Type | Non-Inferiority Comment | Other Analysis Description |
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| | Wilcoxon (Mann-Whitney) | | 0.23 | | | | | | | | | | | | | | Other | | |
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| Secondary | Prostate Tissue Metformin Concentration Levels as Assessed by Liquid Chromatography Tandem Mass Spectrometry | | analysis limited to patients with fresh frozen prostatectomy tissue | Posted | | Median | Inter-Quartile Range | ug/g tissue | | 12 weeks | | | | ID | Title | Description |
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| OG000 | Arm I (Metformin Hydrochloride) | Patients receive extended-release metformin hydrochloride PO QD (one 500 mg metformin tablet daily for the first week, followed by two 500 mg metformin tablets daily for the second week, and then three 500 mg tablets daily until the day before surgery) for 4-12 weeks. | | OG001 | Arm II (Placebo) | Patients receive placebo PO QD (one placebo tablet daily for the first week, followed by two placebo tablets daily for the second week, and then three placebo tablets daily until the day before surgery) for 4-12 weeks. |
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| Secondary | Apoptosis Levels in the Prostatectomy Tissue as Assessed by IHC of Cleaved Caspase 3 | Average number of positively stained cells that exhibited nuclear fragmentation from five randomly selected high-power fields (40x) in the tumor region was calculated for each participant | Participants with tissue sections available from prostatectomy | Posted | | Median | Inter-Quartile Range | Number of positive cells | | 12 weeks | | | | ID | Title | Description |
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| OG000 | Arm I (Metformin Hydrochloride) | Patients receive extended-release metformin hydrochloride PO QD (one 500 mg metformin tablet daily for the first week, followed by two 500 mg metformin tablets daily for the second week, and then three 500 mg tablets daily until the day before surgery) for 4-12 weeks. | | OG001 | Arm II (Placebo) | Patients receive placebo PO QD (one placebo tablet daily for the first week, followed by two placebo tablets daily for the second week, and then three placebo tablets daily until the day before surgery) for 4-12 weeks. |
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| Secondary | Cell Cycle Regulation in the Prostatectomy Tissue as Assessed by IHC of Cyclin D1 | | Participants with tissue sections available from prostatectomy | Posted | | Median | Inter-Quartile Range | % positive cells | | 12 weeks | | | | ID | Title | Description |
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| OG000 | Arm I (Metformin Hydrochloride) | Patients receive extended-release metformin hydrochloride PO QD (one 500 mg metformin tablet daily for the first week, followed by two 500 mg metformin tablets daily for the second week, and then three 500 mg tablets daily until the day before surgery) for 4-12 weeks. | | OG001 | Arm II (Placebo) | Patients receive placebo PO QD (one placebo tablet daily for the first week, followed by two placebo tablets daily for the second week, and then three placebo tablets daily until the day before surgery) for 4-12 weeks. |
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| Secondary | mTOR Regulation in the Prostatectomy Tissue as Assessed by IHC of Phospho-p70 S6 Kinase (p-p70S6K) | | Participants with tissue sections available from prostatectomy | Posted | | Median | Inter-Quartile Range | % positive cells | | 12 weeks | | | | ID | Title | Description |
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| OG000 | Arm I (Metformin Hydrochloride) | Patients receive extended-release metformin hydrochloride PO QD (one 500 mg metformin tablet daily for the first week, followed by two 500 mg metformin tablets daily for the second week, and then three 500 mg tablets daily until the day before surgery) for 4-12 weeks. | | OG001 | Arm II (Placebo) | Patients receive placebo PO QD (one placebo tablet daily for the first week, followed by two placebo tablets daily for the second week, and then three placebo tablets daily until the day before surgery) for 4-12 weeks. |
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| Secondary | Angiogenesis in the Prostatectomy Tissue as Assessed by IHC of CD34 | | Data were not collected due to budgetary constraints | Posted | | | | | | 12 weeks | | | | ID | Title | Description |
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| OG000 | Arm I (Metformin Hydrochloride) | Patients receive extended-release metformin hydrochloride PO QD (one 500 mg metformin tablet daily for the first week, followed by two 500 mg metformin tablets daily for the second week, and then three 500 mg tablets daily until the day before surgery) for 4-12 weeks. | | OG001 | Arm II (Placebo) | Patients receive placebo PO QD (one placebo tablet daily for the first week, followed by two placebo tablets daily for the second week, and then three placebo tablets daily until the day before surgery) for 4-12 weeks. |
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| Secondary | AMPK Activation in the Prostatectomy Tissue as Assessed by IHC of p-AMPK | | Data were not collected due to budgetary constraints | Posted | | | | | | 12 weeks | | | | ID | Title | Description |
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| OG000 | Arm I (Metformin Hydrochloride) | Patients receive extended-release metformin hydrochloride PO QD (one 500 mg metformin tablet daily for the first week, followed by two 500 mg metformin tablets daily for the second week, and then three 500 mg tablets daily until the day before surgery) for 4-12 weeks. | | OG001 | Arm II (Placebo) | Patients receive placebo PO QD (one placebo tablet daily for the first week, followed by two placebo tablets daily for the second week, and then three placebo tablets daily until the day before surgery) for 4-12 weeks. |
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| Secondary | Cell Cycle Regulation in the Prostatectomy Tissue as Assessed by IHC of Retinoblastoma Protein Phosphorylation (p-pRb) | | Data were not collected due to budgetary constraints | Posted | | | | | | 12 weeks | | | | ID | Title | Description |
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| OG000 | Arm I (Metformin Hydrochloride) | Patients receive extended-release metformin hydrochloride PO QD (one 500 mg metformin tablet daily for the first week, followed by two 500 mg metformin tablets daily for the second week, and then three 500 mg tablets daily until the day before surgery) for 4-12 weeks. | | OG001 | Arm II (Placebo) | Patients receive placebo PO QD (one placebo tablet daily for the first week, followed by two placebo tablets daily for the second week, and then three placebo tablets daily until the day before surgery) for 4-12 weeks. |
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| Secondary | Changes in Serum PSA | | Analysis limited to participants with fasting serum samples | Posted | | Median | Inter-Quartile Range | % change | | Baseline and 12 weeks | | | | ID | Title | Description |
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| OG000 | Arm I (Metformin Hydrochloride) | Patients receive extended-release metformin hydrochloride PO QD (one 500 mg metformin tablet daily for the first week, followed by two 500 mg metformin tablets daily for the second week, and then three 500 mg tablets daily until the day before surgery) for 4-12 weeks. | | OG001 | Arm II (Placebo) | Patients receive placebo PO QD (one placebo tablet daily for the first week, followed by two placebo tablets daily for the second week, and then three placebo tablets daily until the day before surgery) for 4-12 weeks. |
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| Secondary | Changes in Serum Fasting Insulin | | analysis limited to participants with fasting serum samples | Posted | | Median | Inter-Quartile Range | % change | | Baseline and 12 weeks | | | | ID | Title | Description |
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| OG000 | Arm I (Metformin Hydrochloride) | Patients receive extended-release metformin hydrochloride PO QD (one 500 mg metformin tablet daily for the first week, followed by two 500 mg metformin tablets daily for the second week, and then three 500 mg tablets daily until the day before surgery) for 4-12 weeks. | | OG001 | Arm II (Placebo) | Patients receive placebo PO QD (one placebo tablet daily for the first week, followed by two placebo tablets daily for the second week, and then three placebo tablets daily until the day before surgery) for 4-12 weeks. |
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| Secondary | Changes in Serum IGF-1/IGFBP-3 | | analysis limited to participants with fasting serum samples | Posted | | Median | Inter-Quartile Range | % change | | Baseline and 12 weeks | | | | ID | Title | Description |
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| OG000 | Arm I (Metformin Hydrochloride) | Patients receive extended-release metformin hydrochloride PO QD (one 500 mg metformin tablet daily for the first week, followed by two 500 mg metformin tablets daily for the second week, and then three 500 mg tablets daily until the day before surgery) for 4-12 weeks. | | OG001 | Arm II (Placebo) | Patients receive placebo PO QD (one placebo tablet daily for the first week, followed by two placebo tablets daily for the second week, and then three placebo tablets daily until the day before surgery) for 4-12 weeks. |
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| Secondary | Changes in Serum Testosterone | | analysis limited to participants with fasting serum samples | Posted | | Median | Inter-Quartile Range | % change | | Baseline and 12 weeks | | | | ID | Title | Description |
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| OG000 | Arm I (Metformin Hydrochloride) | Patients receive extended-release metformin hydrochloride PO QD (one 500 mg metformin tablet daily for the first week, followed by two 500 mg metformin tablets daily for the second week, and then three 500 mg tablets daily until the day before surgery) for 4-12 weeks. | | OG001 | Arm II (Placebo) | Patients receive placebo PO QD (one placebo tablet daily for the first week, followed by two placebo tablets daily for the second week, and then three placebo tablets daily until the day before surgery) for 4-12 weeks. |
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| Secondary | Changes in Serum SHBG | | analysis limited to participants with fasting serum samples | Posted | | Median | Inter-Quartile Range | % change | | Baseline and 12 weeks | | | | ID | Title | Description |
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| OG000 | Arm I (Metformin Hydrochloride) | Patients receive extended-release metformin hydrochloride PO QD (one 500 mg metformin tablet daily for the first week, followed by two 500 mg metformin tablets daily for the second week, and then three 500 mg tablets daily until the day before surgery) for 4-12 weeks. | | OG001 | Arm II (Placebo) | Patients receive placebo PO QD (one placebo tablet daily for the first week, followed by two placebo tablets daily for the second week, and then three placebo tablets daily until the day before surgery) for 4-12 weeks. |
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| Secondary | Changes in Serum Fasting Glucose | | Data were not collected because insulin is a more relevant outcome measure than glucose | Posted | | | | | | Baseline and 12 weeks | | | | ID | Title | Description |
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| OG000 | Arm I (Metformin Hydrochloride) | Patients receive extended-release metformin hydrochloride PO QD (one 500 mg metformin tablet daily for the first week, followed by two 500 mg metformin tablets daily for the second week, and then three 500 mg tablets daily until the day before surgery) for 4-12 weeks. | | OG001 | Arm II (Placebo) | Patients receive placebo PO QD (one placebo tablet daily for the first week, followed by two placebo tablets daily for the second week, and then three placebo tablets daily until the day before surgery) for 4-12 weeks. |
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