A Phase 1 interventional study of Montbretin A in Type 2 Diabetes, sponsored by Robert Petrella. Completed at 1 site in Canada. Open to participants aged 19 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-02.
Sponsored by Robert Petrella · Phase 1, Interventional, and Treatment
The goal of this clinical trial is to test the investigational product, Montbretin A (MbA) in either individuals with type 2 diabetes (T2D) or healthy participants.
The main questions it aims to answer are:
Participants will:
BACKGROUND: Diabetes is an increasingly common disease that affects 6% of the population. It is a chronic metabolic disorder because the body cannot produce enough insulin or cannot respond well to insulin to control the amount of sugar in the blood. Insulin is a hormone secreted by the pancreas that increases the ability of tissues to absorb blood glucose. After a meal, our body will break down the nutrients in the food we eat, such as carbohydrates. These smaller nutrients are then absorbed in our small intestine into our blood. Without proper insulin function, our body is unable to lower the blood sugar and use the blood sugar correctly, leading to high blood sugar (also known as hyperglycemia). Over time, this can lead to complications in the eyes, nervous system, kidney and heart.
One type of diabetes medications, alpha-glucosidase inhibitors (AGIs), prevent blood sugar spikes (period of out of control high blood sugar levels) in diabetic patients after a meal. This type of medication prevents breakdown of carbohydrates into small sugars that can be absorbed in the gut. AGIs usually work well in preventing blood sugar spikes, but they have a number of side effects such as increased gas, bloating and diarrhea. Because of this, patients usually do not follow the recommended schedule for taking AGIs, which means the medications wont work as well.
The Study Treatment ("Montbretin A") provides another way to control blood sugar spikes after a meal. This method targets an enzyme (substance produced by body to help break down substances) found in the small intestine called human pancreatic amylase (HPA), which helps in the first step of breaking down carbohydrates. The Study Treatment works by blocking HPA from performing its function. This could potentially be used to treat T2D by preventing the initial breakdown of carbohydrates, which can lead to less sugars absorbed to the blood and better blood sugar control. MbA will lead to larger pieces of carbohydrates passed to the colon, reducing the speed of gas produced. This might lead to reduced stomach upsets.
MAIN AIM: To test the safety and tolerability (in terms of stomach-related side effects) of MbA in humans.
METHOD: This is an open-label, first-in-human, single-arm, single-center Phase I clinical trial. Participants will receive increasing dose of MbA (starting from 10 mg to 300 mg) with a standardized meal during the two-week treatment period (Weeks 1 and 2), with follow-up visits scheduled in Week 3 (one week after treatment completion) and Week 12 (nine weeks after treatment completion).
Participants are expected to participate for up to 13 weeks. This include one screening visit (one week prior to start of treatment), 2 weeks of treatment (3 visits per week for a total of 6 visits), and 2 follow-up visits (one week and nine weeks after completing treatment).
The tests that will be done in this study include:
9,359 studies on the registry are indexed under Diabetes Mellitus, Type 2; 1,318 are open to participants now.
This study's enrollment of 15 is below the median of 80 across 7,525 interventional studies indexed under Diabetes Mellitus, Type 2.
Browse Diabetes Mellitus, Type 2 studies →This is the only study on the registry with Robert Petrella as lead sponsor.
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Exclusion Criteria:
In this study, participants will receive increasing dosages of the Study Treatment (Montbretin A, MbA) at each treatment visit. The Study Treatment will be taken with a standardized meal (a meal that has specified quantities of carbohydrates, fats and proteins). At each visit, participants will receive one dose (in pill form) of MbA. As long as they are not experiencing any side effects, this dose will be gradually increased at each study visit (starting from 10 mg, 25 mg, 50 mg, 100 mg, 200 mg, to 300 mg MbA).
Dietary Supplement: Montbretin A
The investigational product is 95% pure montbretin A (MbA), a glycosylated acyl-flavonol isolated from the corms (bulbs) of the Crocosmia plant through hot water extraction. It is a potent and specific inhibitor of human pancreatic amylase (HPA).
Maximum tolerated dose (MTD)
The MTD is defined as the minimum dose that results in a dose limiting toxicity in the form of gastro-intestinal adverse events (relevant flatulence and/or diarrhea as determined by the Gastrointestinal Symptom Rating Scale) in 33% of the test subjects.
Time frame: 2 weeks
Plan to share: No
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This study is completed, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.
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