Outpatient Control-to-Range: System and Monitoring Testing

Completed · Not applicable

Conditions studied: Type 1 Diabetes Mellitus

In brief

A single arm, single treatment study is proposed to assess the feasibility of the AP Platform (cell phone + Control to Range system) outside of a hospital based clinical research center.

Key facts

Study ID

NCT01578980

Run by

University of Virginia

People needed

20

Starts

2012-04-01

Expected to finish

2012-06-01

Last updated by the study team

2014-09-16

Who can join

Age: 21 and older, up to 65. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• ≥21 and <65 years old
• Clinical diagnosis of type 1 diabetes mellitus:
• Criteria for documented hyperglycemia (at least 1 criterion must be met):
• Fasting glucose ≥126 mg/dL - confirmed
• Two-hour Oral Glucose Tolerance Test (OGTT) glucose ≥200 mg/dL - confirmed
• HbA1c ≥6.5% documented by history - confirmed
• Random glucose ≥200 mg/dL with symptoms
• No data at diagnosis is available but the participant has a convincing history of hyperglycemia consistent with diabetes
• Criteria for requiring insulin at diagnosis (at least 1 criterion must be met):
• Participant required insulin at diagnosis and continually thereafter
• Participant did not start insulin at diagnosis but upon investigator review likely needed insulin (significant hyperglycemia that did not respond to oral agents) and did require insulin eventually and used continually
• Participant did not start insulin at diagnosis but continued to be hyperglycemic, had positive islet cell antibodies - consistent with latent autoimmune diabetes in adults (LADA) and did require insulin eventually and used continually
• Use of an insulin pump to treat his/her diabetes for at least 1 year
• Actively using an insulin pump with bolus calculator feature including predefined parameters for carbohydrate ratio, insulin sensitivity factor, target blood glucose (BG) and active insulin.
• HbA1c between 6.0% - 9.0% as measured with DCA2000 or equivalent device
• Not currently known to be pregnant, breast feeding, or intending to become pregnant (females)
• Demonstration of proper mental status and cognition for the study
• Willingness to avoid consumption of acetaminophen-containing products during the study interventions
• If on antihypertensive, thyroid, anti-depressant or lipid lowering medication, have stability on the medication for at least 2 months prior to enrollment in the study

You may not qualify if…

• Diabetic ketoacidosis within the 6 months prior to enrollment
• Severe hypoglycemia resulting in seizure, loss of consciousness, or 3rd party assistance in the 12 months prior to enrollment
• Subject reports that he/she has hypoglycemia unawareness with severe low blood sugars (e.g. <50 mg/dL without symptoms)
• Pregnancy; breast feeding, or intention of becoming pregnant
• Uncontrolled arterial hypertension (diastolic blood pressure >90 mmHg and/or systolic blood pressure >160 mmHg)
• Conditions which may increase the risk of hypoglycemia such as any cardiac disorder/arrhythmia, uncontrolled coronary artery disease during the previous year (e.g. history of myocardial infarction, acute coronary syndrome, therapeutic coronary intervention, coronary bypass or stenting procedure, stable or unstable angina, episode of chest pain of cardiac etiology with documented EKG changes, or positive stress test or catheterization with coronary blockages >50%), congestive heart failure, history of cerebrovascular event, seizure disorder, syncope, adrenal insufficiency, neurologic disease or atrial fibrillation
• Hematocrit <40% (males) and <35% (females)
• History of a systemic or deep tissue infection with methicillin-resistant staph aureus or Candida albicans
• Use of a device that may pose electromagnetic compatibility issues and/or radiofrequency interference with the CGM (implantable cardioverter-defibrillator, electronic pacemaker, neurostimulator, intrathecal pump, and cochlear implants)
• Anticoagulant therapy other than aspirin
• Oral steroids
• Medical condition requiring use of an acetaminophen-containing medication that cannot be withheld for the study admissions.
• Psychiatric disorders that would interfere with study tasks (e.g. inpatient psychiatric treatment within 6 months prior to enrollment)
• Mental incapacity, unwillingness or language barriers precluding adequate understanding or cooperation
• Known current or recent alcohol or drug abuse
• Medical conditions that would make operating a CGM, cell phone, or insulin pump difficult (e.g. blindness, severe arthritis, immobility)
• Any skin condition that prevents sensor or pump placement on the abdomen or arm (e.g. bad sunburn, pre-existing dermatitis, intertrigo, psoriasis, extensive scarring, cellulitis)
• Impaired hepatic function measured as alanine aminotransferase or aspartate aminotransferase ≥three times the upper reference limit
• Impaired renal function measured as creatinine >1.2 times above the upper limit of normal
• Uncontrolled microvascular (diabetic) complications (other than diabetic non-proliferative retinopathy), such as current proliferative diabetic retinopathy, known diabetic nephropathy (other than microalbuminuria with normal creatinine) or neuropathy requiring treatment
• Active gastroparesis requiring current medical therapy
• If taking antihypertensive, thyroid, anti-depressant or lipid lowering medication, lack of stability on the medication for the past 2 months prior to enrollment in the study
• Uncontrolled thyroid disease
• Known bleeding diathesis or dyscrasia
• Known allergy to medical adhesives, components of the insulin pump insertion set or continuous glucose monitor sensor

Where it is running

• Sansum Diabetes Research Institute — Santa Barbara, California, United States
• University of Virginia — Charlottesville, Virginia, United States

Full record on ClinicalTrials.gov

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