Multicenter Study to Evaluate the Effect of BTI320 on Glycemic Control in Type 2 Diabetes

Double-blind, Placebo-controlled, Multicenter Study to Evaluate the Effect of BTI320 in Addition to Current Treatment With Metformin and/or Sulfonylureas on Glycemic Control in Subjects With Type 2 Diabetes

The objective of the current study is to investigate the efficacy and safety of BTI320 compared to placebo in addition to metformin and/or sulfonylureas on glycemic control over 12 weeks in subjects with type 2 diabetes mellitus. This is a randomized, placebo-controlled, double-blind, multi-center study with two treatment arms. Study duration will be approximately 12 weeks. Participants will ingest 4 g BTI320 or matching placebo approximately 10 minutes before starting a meal, 3 times per day, at breakfast, lunch, and dinner. Eight study visits will be scheduled after the Screening visit: Baseline (day 0), weeks 3, 6, and 12 (Visits 2, 4, 6, and 8 respectively) for safety and efficacy assessments and Visits 3, 5, 7 and 9 to remove the Continuous Glucose Monitoring System.

Study Overview

• Status: Completed
• Conditions: Type2 Diabetes Mellitus
• Intervention / Treatment: Other: Placebo; Drug: BTI320

Detailed Description

The objective of the current study is to investigate the efficacy and safety of BTI320 compared to placebo in addition to metformin and/or sulfonylureas on glycemic control over 12 weeks in subjects with type 2 diabetes mellitus. This is a randomized, placebo-controlled, double-blind, multi-center study with two treatment arms. Study duration will be approximately 12 weeks. Participants will ingest 4 g BTI320 or matching placebo approximately 10 minutes before starting a meal, 3 times per day, at breakfast, lunch, and dinner. Participants will be instructed not to take the Investigational Medicinal Product with other drugs at the same time. Additional mealtime medication must be taken after consumption of the meal. A nutritionist, dietitian, or study personnel will provide instructions to subjects regarding dietary intake and the need to keep a detailed food record in an online calorie counter and have it entered into an electronic data capture during the study period. In general, subjects will be asked to follow normal meal plans recommended to patients with diabetes. Non-compliance will be defined as taking <80% or >120% of Investigational Medicinal Product during any outpatient evaluation period (visit to visit). Subjects who are non-compliant will be replaced to meet the goal of 60 evaluable subjects. Eight study visits will be scheduled after the Screening visit: Baseline (day 0), weeks 3, 6, and 12 (Visits 2, 4, 6, and 8 respectively) for safety and efficacy assessments and Visits 3, 5, 7 and 9 to remove the Continuous Glucose Monitoring System.

• Study Type: Interventional
• Enrollment (Actual): 66
• Phase: Phase 2

Contacts and Locations

Study Locations

• United States
  • California
    • Ventura, California, United States, 93003
      • Coastal Metabolic Research Center, Inc.
  • New Mexico
    • Albuquerque, New Mexico, United States, 87102
      • Albuquerque Clinical Trials
  • South Carolina
    • Mount Pleasant, South Carolina, United States, 29464
      • Coastal Carolina Research Center
  • Utah
    • Ogden, Utah, United States, 84405
      • Advanced Research Institute

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 75 years (ADULT, OLDER_ADULT)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• 18-75 years old.

• Established type 2 diabetes as assessed by:

  • Fasting blood glucose (>126 mg/dL/7 mmol/L), or
  • 2 hr oral glucose tolerance test (>200 mg/dL/11.1 mmol/L), or
  • HbA1c is ≥7.0% within 3 months of enrollment and on a stable dose of metformin and/or sulfonylureas for at least 12 weeks.
• Body Mass Index (BMI) >23 kg/m2.
• Treated with metformin and/or sulfonylureas (monotherapy or combination therapy) stable and maximally tolerated for at least three months prior to study participation. Subjects should be on stable and maximally tolerated doses throughout the study unless sulfonylureas require adjustment to reduce the risk of hypoglycemia during the study.
• Subjects who are otherwise in generally satisfactory health.
• Likely to follow study requirements, in particular, to adhere to maintaining a suitable diet and keeping an online diary of their food intake and weight measured once weekly via EDC.
• Female subjects have negative urine pregnancy test at the Screening visit.
• Provides signed informed consent to participate in the study. Informed consent must be given by the subject prior to inclusion in the study, and before performing any study procedures, including the screening visit.

Exclusion Criteria:

• Have type 1 diabetes (insulin-dependent diabetes mellitus [IDDM]).
• Treated with long-acting glucagon-like peptide-1 (GLP-1) receptor agonists, dipeptidyl peptidase-4 (DPP-4) inhibitors, alpha-glucosidase inhibitor, regular insulin, rapid-acting insulin analog, or sodium-glucose cotransport-2 inhibitors (SGLT-2). Treatment with any of these drugs should have been stopped at least 3 months before inclusion.
• Current or recent (within past 30 days) participation in another investigational drug or device study.
• Have participated in a previous study of BTI320.
• Have any uncontrolled cardiovascular risk factors (hypertension, hyperlipidemia), past clinical manifestation of coronary artery disease, blood dyscrasias, or significant cerebrovascular disease in the previous year. Any concomitant drug treatment for a condition not related to diabetes should be discussed and approved with the study Medical Monitor.
• Pregnant or breastfeeding, or plan to become pregnant within one year after randomization.
• Food allergy or severe food intolerance assessed by the Principal Investigator.
• History of allergy or intolerance to BTI320 (PAZ320 or SugarDown) or equivalent.
• Have known condition(s) influencing their glycemic levels (e.g. Cushing syndrome, pancreatic diseases, acromegaly).
• Have human immunodeficiency virus (HIV) infection, hepatitis, tuberculosis, or other serious infectious disease.
• History of alcohol addiction or drug abuse (illegal or controlled pharmaceutical substances) within past year prior to randomization.
• Have planned major surgery within 6 months after randomization.
• Have a terminal illness.
• Serum creatinine of >1.4 mg/dL (>124 μmol/L) in women or >1.5 mg/dL (>133 μmol/L) in men or subjects with end-stage renal disease (Estimated Glomerular Filtration Rate calculated by CKD-EPI [eGFR] <10 mL/min/1.73 m2).
• Have serum Alanine Aminotransferase (SGPT) >3 times upper limit of normal.
• History of cancer, other than non-melanoma skin cancer, that requires treatment during the previous five years prior to randomization.
• History of hemolytic anemia, repeated blood transfusions, or other conditions making HbA1c results unreliable as an indicator of chronic glucose level; hematocrit (Hct) <35% for men and <33% for women.
• History of solid organ transplant.
• Treatment with systemic glucocorticoids (except for short-term therapy [5 days or less]).
• Treatment with atypical anti-psychotics.
• In the opinion of the principal investigator, the subject is unlikely to follow the study protocol.
• Employment/lifestyle that requires nocturnal hours.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: TREATMENT
• Allocation: RANDOMIZED
• Interventional Model: PARALLEL
• Masking: TRIPLE

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
EXPERIMENTAL: BTI320; 4 g BTI320 administered 10 min before breakfast, lunch, and dinner	Drug: BTI320; Non-systemic galactomannan complex polysaccharide; Other Names: Sugardown; PAZ320
PLACEBO_COMPARATOR: Placebo; Placebo administered 10 min before breakfast, lunch, and dinner	Other: Placebo; Placebo

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
2 hr PPG	Change from baseline to week 12 in area under the curve (AUC) 2-hr post-prandial glucose (PPG) excursions in subjects receiving BTI320 compared with those subjects receiving placebo.	Week 12

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
HbA1c	Change in Hemoglobin A1c (HbA1c) serum levels from baseline	Weeks 3, 6, and 12
2 hr PPG	Change from baseline of AUC 2-hr PPG	Weeks 3 and 6
1 hr PPG	Change from baseline of AUC 1-hr PPG	Weeks 3, 6, and 12
3 hr PPG	Change from baseline of AUC 3-hr PPG	Weeks 3, 6, and 12
BMI	Change in Body Mass Index (BMI) from baseline	Week 12
Lipids	Change in serum lipid levels from baseline	Weeks 3, 6, and 12
Blood Pressure	Change in systolic blood pressure (SBP), diastolic blood pressure (DBP), and mean arterial blood pressure (MAP) from baseline	Week 12
hsCRP concentration	Change in serum highly sensitive C-reactive protein (hsCRP) levels from baseline	Weeks 3, 6, and 12
C-peptide/insulin concentration	Change in serum C-peptide or insulin levels from baseline	Weeks 3, 6, and 12
Fasting blood glucose concentration	Change in fasting blood glucose from baseline	Weeks 3, 6, and 12
CGMS	Change in the AUC in Continuous Glucose Monitoring System (CGMS) from baseline	Three days starting at Baseline, Weeks 3, 6, and 11
Change in oral hypoglycemic medication	Change in oral hypoglycemic medication dosage	Weeks 3, 6, and 12

Collaborators and Investigators

• Sponsor: Boston Therapeutics
• Collaborators: Sugardown Company Limited

Study record dates

Study Major Dates

• Study Start (ACTUAL): September 19, 2018
• Primary Completion (ACTUAL): August 30, 2019
• Study Completion (ACTUAL): August 30, 2019

Study Registration Dates

• First Submitted: August 29, 2018
• First Submitted That Met QC Criteria: August 30, 2018
• First Posted (ACTUAL): August 31, 2018

Study Record Updates

• Last Update Posted (ACTUAL): September 25, 2020
• Last Update Submitted That Met QC Criteria: September 24, 2020
• Last Verified: September 1, 2020

More Information

Terms related to this study

• Keywords: BTI320; Sugardown; Post-prandial glucose excursions
• Additional Relevant MeSH Terms: Glucose Metabolism Disorders; Metabolic Diseases; Endocrine System Diseases; Diabetes Mellitus; Diabetes Mellitus, Type 2; Hypoglycemic Agents; Physiological Effects of Drugs; PAZ320
• Other Study ID Numbers: BTI320-SG02

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No