ZONE: A Study of the Effect of ZT-01 on Night-time Hypoglycemia in Type 1 Diabetes
Study Details
Study Description
Brief Summary
The goal of this clinical trial is to learn about the effect of the study drug (ZT-01) on low blood sugar (hypoglycemia) in adults with type 1 diabetes (T1D) who have been having low blood sugars ("hypos") at night. ZT-01 increases the amount of a hormone called glucagon during low blood sugar, and this may help prevent the occurrence of hypos. The main questions this trial aims to answer are whether ZT-01 lowers the number of hypos happening at night, and what its effects are on blood sugar levels. The safety of ZT-01 will also be measured.
Participants will be asked to wear a study-provided continuous glucose monitor (CGM) during two 4-week periods when they will self-inject the study drug before bed. They will get ZT-01 at one of three dose levels during one period, and placebo (which looks like the study drug but doesn't contain the active ingredient) during the other. Neither the participant nor the study site will know what they are receiving during each treatment period or see data from the CGM. The participant will continue to use their usual methods of measuring blood sugar (including their personal CGM) and giving insulin during the study. The participant will be asked to complete a short diary each evening, and will be asked to upload the CGM data to a study phone every day.
If a participant uses their own CGM and is willing to share information on how often they have low blood sugar with the study site at the first visit to see if they meet study entry requirements, they will have 6 study visits, 2 study phone calls, and be in the study for about 16 weeks. If they don't use CGM or don't want to share their information, then they will be asked to wear a study CGM for an extra 4 weeks to find out how many low blood sugars they have, and will have an extra visit.
Study participants will be asked to give blood and urine for testing to see whether they meet the requirements to enter the study, and at the start and end of each treatment period to see if the study treatment has any effects. They will also have their blood pressure and temperature taken at each study visit, and have an ECG at 4 visits to measure the electrical activity of their heart.
Some participants will be asked to also take part in a sub-study where their blood level of ZT-01 and glucagon is measured, after the first and last dose. They will be asked to stay at the study site overnight for each set of measurements (4 in total).
Condition or Disease | Intervention/Treatment | Phase |
---|---|---|
|
Phase 2 |
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
---|---|
Experimental: ZT-01 7 mg Participants receive placebo and ZT-01 7 mg each by subcutaneous injection daily for 28 days, randomized to order |
Drug: Placebo
Subject receives Placebo by subcutaneous injection daily for 28 days
Drug: ZT-01, 7 mg
Subject receives ZT-01 7 mg by subcutaneous injection daily for 28 days
|
Experimental: ZT-01 15 mg Participants receive placebo and ZT-01 15 mg by subcutaneous injection daily for 28 days, randomized to order |
Drug: Placebo
Subject receives Placebo by subcutaneous injection daily for 28 days
Drug: ZT-01, 15 mg
Subject receives ZT-01 15 mg by subcutaneous injection daily for 28 days
|
Experimental: ZT-01 22 mg Participants receive placebo and ZT-01 22 mg by subcutaneous injection daily for 28 days, randomized to order |
Drug: Placebo
Subject receives Placebo by subcutaneous injection daily for 28 days
Drug: ZT-01, 22 mg
Subject receives ZT-01 22 mg by subcutaneous injection daily for 28 days
|
Outcome Measures
Primary Outcome Measures
- Incidence of nocturnal hypoglycemia [During each 28 day treatment period]
Rate of nocturnal (midnight to 06:00 AM) hypoglycemic events (glucose <54 mg/dL) lasting at least 15 minutes, compared to placebo
Secondary Outcome Measures
- Incidence and severity of adverse events (AEs) [During each 28 day treatment period and 2-week followup]
Number of patients experiencing AEs compared to placebo
- Glucose time below range [During each 28 day treatment period]
Glucose time below 54 mg/dL (as %) compared to placebo
- Incidence of hypoglycemia [During each 28 day treatment period]
Number of hypoglycemic events (glucose <70 mg/dL for at least 15 minutes, compared to placebo
Other Outcome Measures
- Glucose time in range [During each 28-day treatment period]
Glucose time in range (70-180 mg/dL, %) compared to placebo
- Mean glycemic variability [During each 28 day treatment period]
Percent coefficient of variation of glucose values compared to placebo
- Mean glucose concentration [During each 28 day treatment period]
Mean glucose concentration compared to placebo
Eligibility Criteria
Criteria
Inclusion Criteria:
-
Has type 1 diabetes for at least 5 years
-
Has history of recent nocturnal hypoglycemia (if using personal CGM, 4 events <54 mg/dL over previous 4 weeks at screening; if not using personal CGM then recent history of nocturnal symptomatic hypoglycemia at screening and 4 events over 4 weeks using blinded study CGM during additional screening)
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HbA1c at screening </= 10.0%
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Body mass index (BMI) at screening >/=18.5 to <33 kg/m2
Exclusion Criteria:
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Currently uses automated insulin delivery system, eg closed loop or artificial pancreas
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Has been hospitalized for diabetic ketoacidosis (DKA) more than once within previous 6 months
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Has experienced >/= 1 severe hypoglycemia (requiring assistance) during previous 4 weeks or >2 in previous 3 months
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Diagnosis of type 2 diabetes, pheochromocytoma, insulinoma, glucagonoma, acromegaly, Cushing's disease, glycogen storage disease, adrenal insufficiency
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Clinically significant kidney disease
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Abnormal liver function
Contacts and Locations
Locations
No locations specified.Sponsors and Collaborators
- Zucara Therapeutics Inc.
Investigators
None specified.Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- ZT01-CL-2001