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The purpose of this proof-of-concept controlled-feeding study is to determine whether patiromer (Veltassa®, Relypsa, Inc., Redwood City, CA) can be used to maintain normal serum potassium concentrations in chronic kidney disease (CKD) patients who are transitioned to a plant-rich diet.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Patiromer + Research Diet | Experimental | During the first phase (week 2), participants will be transitioned to a plant-rich renal diet, which contains moderate protein (10-15% of kcal), restricts dairy products (less than or equal to 1 serving/day), and eliminates high-potassium fruits and vegetables. During the second phase (weeks 3 and 4), the diet will be altered to provide at-least half of fruits and vegetables from high-potassium sources. |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Patiromer | Drug | Patiromer dosing will be determined based on fasting potassium concentrations measured at the end of each week, factoring in both the absolute concentration, as well as the rate of change. The baseline dose of patiromer will correspond to the study by Weir et al. (2015); 8.4-g once per day for participants with a baseline serum potassium of greater than or equal to 5.1 mEq/L. |
| Measure | Description | Time Frame |
|---|---|---|
| Change in Fasting Serum Potassium Concentrations | Baseline, Week 2 | |
| Change in Fasting Serum Potassium Concentrations | Baseline, Week 4 | |
| Change in Systolic Blood Pressure (SBP) | Baseline, Week 2 | |
| Change in Systolic Blood Pressure (SBP) | Baseline, Week 4 | |
| Change in Diastolic Blood Pressure (DBP) | Baseline, Week 2 | |
| Change in Diastolic Blood Pressure (DBP) | Baseline, Week 4 |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| David Goldfarb, MD | NYU Langone Health | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| NYU Langone Health | New York | New York | 10016 | United States |
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| ID | Title | Description |
|---|---|---|
| FG000 | Patiromer + Research Diet | During the first phase (week 2), participants will be transitioned to a plant-rich renal diet, which contains moderate protein (10-15% of kcal), restricts dairy products (less than or equal to 1 serving/day), and eliminates high-potassium fruits and vegetables. During the second phase (weeks 3 and 4), the diet will be altered to provide at-least half of fruits and vegetables from high-potassium sources. Patiromer: Patiromer dosing will be determined based on fasting potassium concentrations measured at the end of each week, factoring in both the absolute concentration, as well as the rate of change. The baseline dose of patiromer will correspond to the study by Weir et al. (2015); 8.4-g once per day for participants with a baseline serum potassium of greater than or equal to 5.1 mEq/L. Research Diet Menu: During the study, participants will be asked to consume only the foods provided in the research diet |
| Title | Milestones | Reasons Not Completed | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall Study |
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| ID | Title | Description |
|---|---|---|
| BG000 | Patiromer + Research Diet | During the first phase (week 2), participants will be transitioned to a plant-rich renal diet, which contains moderate protein (10-15% of kcal), restricts dairy products (less than or equal to 1 serving/day), and eliminates high-potassium fruits and vegetables. During the second phase (weeks 3 and 4), the diet will be altered to provide at-least half of fruits and vegetables from high-potassium sources. Patiromer: Patiromer dosing will be determined based on fasting potassium concentrations measured at the end of each week, factoring in both the absolute concentration, as well as the rate of change. The baseline dose of patiromer will correspond to the study by Weir et al. (2015); 8.4-g once per day for participants with a baseline serum potassium of greater than or equal to 5.1 mEq/L. Research Diet Menu: During the study, participants will be asked to consume only the foods provided in the research diet |
| Units | Counts |
|---|---|
| Participants |
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| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes |
|---|---|---|---|---|---|---|---|---|---|
| Age, Continuous | Mean |
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | Change in Fasting Serum Potassium Concentrations | Posted | Mean | Standard Deviation | mg/dL | Baseline, Week 2 |
|
4 weeks
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Patiromer + Research Diet | During the first phase (week 2), participants will be transitioned to a plant-rich renal diet, which contains moderate protein (10-15% of kcal), restricts dairy products (less than or equal to 1 serving/day), and eliminates high-potassium fruits and vegetables. During the second phase (weeks 3 and 4), the diet will be altered to provide at-least half of fruits and vegetables from high-potassium sources. Patiromer: Patiromer dosing will be determined based on fasting potassium concentrations measured at the end of each week, factoring in both the absolute concentration, as well as the rate of change. The baseline dose of patiromer will correspond to the study by Weir et al. (2015); 8.4-g once per day for participants with a baseline serum potassium of greater than or equal to 5.1 mEq/L. Research Diet Menu: During the study, participants will be asked to consume only the foods provided in the research diet |
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| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| David Goldfarb, MD | NYU Langone Health | 212-263-0744 | David.Goldfarb@nyulangone.org |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot_SAP | Yes | Yes | No | Study Protocol and Statistical Analysis Plan | Jul 10, 2019 | Sep 30, 2021 | Prot_SAP_000.pdf |
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| ID | Term |
|---|---|
| D051436 | Renal Insufficiency, Chronic |
| D006947 | Hyperkalemia |
| ID | Term |
|---|---|
| D051437 | Renal Insufficiency |
| D007674 | Kidney Diseases |
| D014570 | Urologic Diseases |
| D052776 | Female Urogenital Diseases |
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| ID | Term |
|---|---|
| C568789 | patiromer |
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| Research Diet Menu | Dietary Supplement | During the study, participants will be asked to consume only the foods provided in the research diet |
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| years |
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| Sex: Female, Male | Count of Participants | Participants |
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| Ethnicity (NIH/OMB) | Count of Participants | Participants |
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| Race (NIH/OMB) | Count of Participants | Participants |
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| Region of Enrollment | Number | participants |
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| Primary | Change in Fasting Serum Potassium Concentrations | Posted | Mean | Standard Deviation | mg/dL | Baseline, Week 4 |
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| Primary | Change in Systolic Blood Pressure (SBP) | Posted | Mean | Standard Deviation | mmHg | Baseline, Week 2 |
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| Primary | Change in Systolic Blood Pressure (SBP) | Posted | Mean | Standard Deviation | mmHg | Baseline, Week 4 |
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| Primary | Change in Diastolic Blood Pressure (DBP) | Posted | Mean | Standard Deviation | mmHg | Baseline, Week 2 |
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| Primary | Change in Diastolic Blood Pressure (DBP) | Posted | Mean | Standard Deviation | mmHg | Baseline, Week 4 |
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| 0 |
| 2 |
| 0 |
| 2 |
| 0 |
| 2 |
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| D005261 |
| Female Urogenital Diseases and Pregnancy Complications |
| D000091642 | Urogenital Diseases |
| D052801 | Male Urogenital Diseases |
| D002908 | Chronic Disease |
| D020969 | Disease Attributes |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
| D014883 | Water-Electrolyte Imbalance |
| D008659 | Metabolic Diseases |
| D009750 | Nutritional and Metabolic Diseases |