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Assessment of Glycemic Control in Patients With Type 2 Diabetes Mellitus and Late Stage Chronic Kidney Disease

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT03383627
Recruitment Status : Completed
First Posted : December 26, 2017
Results First Posted : April 7, 2020
Last Update Posted : April 6, 2021
Information provided by (Responsible Party):
Lubaina Presswala, Northwell Health

Brief Summary:
Diabetes control is often assessed by tests of glucose levels over time, such as the glycosylated hemoglobin A1c (HbA1c) and fructosamine. In the later stages of chronic kidney disease (CKD) there is limited data available on the utility of these tests. There are reasons to believe that the tests may be less accurate in this population. Continuous glucose monitoring (CGM) offers an effective method for understanding the totality of glucose exposure and incidence of both hyperglycemic and hypoglycemic excursions.

Condition or disease Intervention/treatment Phase
Diabetes Kidney Diseases Device: Continuous Glucose Monitoring Not Applicable

Detailed Description:
In the proposed study Investigator plan to utilize CGM in patients with late stage CKD stages 3b-5 to 1) determine accuracy of HbA1c and serum fructosamine testing as measures of glucose control in patients with Type 2 Diabetes Mellitus (T2DM), 2) Better understand test characteristics in the late stage CKD population (correlation, linear equation, slope, Y intercept, average glucose at different HbA1c levels), 3) Develop a preliminary understanding of how test characteristics differ in late stage CKD compared to other patients with diabetes, 4) quantify time burden and number of episodes of hypoglycemia, 4) study hyperglycemic burden and 5) analyze glucose variability. The research staff will explain the study to patients that meet all inclusion criteria. Patients will get time to understand the study, review the consent document, ask questions to the PI, and then provide their consent to participate in the study. On Day 1 of the study, a CGM (Freestyle Libre) device will be placed on patients with CKD 3b-5 which will be worn for 14 consecutive days. Patients will return on Day 14 to remove the CGM device. HbA1c and fructosamine values will be drawn on Day 14 and these results will be compared with average glucose monitoring values as recorded on the CGM device. Incidence, duration, and severity of both hypoglycemic and hyperglycemic events will be analyzed. Investigators hypothesis that there will be significant variability in the serum HbA1c values when compared with calculated HbA1c from CGM readings. Investigators also hypothesize that the results will reflect a greater incidence of hypoglycemia in this population by CGM analysis.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 80 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: Assessment of Glycemic Control in Patients With Type 2 Diabetes Mellitus and Late Stage Chronic Kidney Disease
Actual Study Start Date : November 30, 2017
Actual Primary Completion Date : August 21, 2018
Actual Study Completion Date : August 21, 2018

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Kidney Diseases
Drug Information available for: Dextrose

Arm Intervention/treatment
Experimental: Continuous glucose monitoring
  • If subjects meet inclusion criteria then they will return to the research site on Day 1 to place Freestyle Libre Pro device by the research staff for 14-day monitoring.
  • Subjects will be advised to return to the research site on Day 14 to remove the CGM device for analysis. On Day 14, blood will be drawn for HbA1c and fructosamine, The blood drawn for this research will be approximately 10-15 milliliters.
  • There are no drug washout periods. Subjects will continue to take all their medications and/or insulins as prescribed by their doctor.
  • Baseline data including age, race, ethnicity, past medical history, home medication list, and diabetes related laboratory data will be collected.
Device: Continuous Glucose Monitoring
  • The FreeStyle Libre Pro Flash Glucose Monitoring System is a professional continuous glucose monitoring (CGM) device indicated for detecting trends and tracking patterns in persons (age 18 and older) with diabetes. The Freestyle Libre Pro device is FDA approved (PMA# P150021). Participants will use the FreeStyle Libre Pro Flash Glucose Monitoring device according to its approved use, on the back of the arm.
  • CGM monitoring will be performed on Day 1 by placing the Freestyle Libre Pro on research subjects for intended use of 14 days.
  • Subjects will be advised to return to the research site on Day 14 to remove the CGM device for analysis.

Primary Outcome Measures :
  1. Mean Glucose Concentration Measured by CGM [ Time Frame: 14 Days ]
    Mean glucose concentration (mg/dL) will be measured using measurements taken by CGM device.

  2. Number of Participants With Hypoglycemic Events [ Time Frame: 14 Days ]
    Hypoglycemic event will be considered when blood sugar level is <=70 mg/dl. Detail information like time of event, number of subjects with an event, duration of event will be analyzed.

  3. Mean Number of Hypoglycemic Events Per Participant. [ Time Frame: 14 Days ]
    Total number of hypoglycemic events per subject will be calculated during the study period. Mean number of events per subject will be analyzed.

  4. Duration Hypoglycemic Events [ Time Frame: 14 Days ]
    As monitoring device measures blood glucose level numerous time, duration of hypoglycemic event will be calculated in percent time per subject based on total duration of time subject wore CGM device.

  5. Mean HbA1c [ Time Frame: 14 Days ]
    HbA1c collected at end of the participation.

Secondary Outcome Measures :
  1. Mean Serum Fructosamine Concentration [ Time Frame: 14 Days ]
    Serum fructosamine (µmol/L) collected at the end of participation.

  2. Determination of Serum Fructosamine [ Time Frame: 14 days ]
    Using blood glucose information measured with continuous blood glucose monitoring device, probable level of serum fructosamine (µmol/L) will be measured for each participant and mean will be analyzed.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • 18 years and older with ability to speak and understand English
  • Established diagnosis of type 2 Diabetes Mellitus
  • Chronic Kidney Disease (stages 3b, 4 or 5, eGFR (Glomerular Filtration Rate) < 45 ml/min, and not on dialysis) documented within 3 months of enrollment

Exclusion Criteria:

  • Type 2 Diabetes Mellitus.
  • Patient with End stage kidney disease on Dialysis.
  • Presence of Hemoglobinopathies.
  • Red blood cell transfusion in the last 12 weeks.
  • Hb < 9 g/dL documented within 3 months of enrollment - Dosing with an erythropoiesis stimulating agent is acceptable but dose must be stable for two months.
  • Use of acetaminophen on a daily basis.
  • Systemic steroid treatment in the past 12 weeks.
  • Greater than 50% dose change in diabetes medications or new diabetes medications started in the previous 8 weeks.
  • Currently pregnant.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT03383627

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United States, New York
Northwell Health (Division Endocrinology and Nephrology)
Great Neck, New York, United States, 11021
Sponsors and Collaborators
Northwell Health
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Principal Investigator: Lubaina Presswala, DO Northwell Health
  Study Documents (Full-Text)

Documents provided by Lubaina Presswala, Northwell Health:
Informed Consent Form  [PDF] June 22, 2018

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Responsible Party: Lubaina Presswala, Principal Investigator, Northwell Health Identifier: NCT03383627    
Other Study ID Numbers: 17-0531
First Posted: December 26, 2017    Key Record Dates
Results First Posted: April 7, 2020
Last Update Posted: April 6, 2021
Last Verified: March 2021
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No
Plan Description: Access to study data will be limited to Institutional Review Board (IRB) approved personnel only.

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: Yes
Product Manufactured in and Exported from the U.S.: No
Keywords provided by Lubaina Presswala, Northwell Health:
Chronic Kidney Disease
Additional relevant MeSH terms:
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Kidney Diseases
Renal Insufficiency, Chronic
Diabetes Mellitus
Diabetes Mellitus, Type 2
Glucose Metabolism Disorders
Metabolic Diseases
Endocrine System Diseases
Urologic Diseases
Renal Insufficiency