A Study to Evaluate Efficacy and Safety of Distal Jejunal-release Dextrose Beads Formulation (APHD-012) in Subjects With a Pathological Oral Glucose Tolerance Test (OGTT)

Inclusion Criteria: Male and female subjects 18 - 70 years of age Fully vaccinated against SARS-CoV-2. Body mass index 25-35 kg/m2 Subjects with an impaired glucose tolerance defined as: HbA1c values ≥5.7% and ≤ 6.4%, and/or, Impaired glucose tolerance (glucose between 140 and 199 mg/dL at the 2 hours of the Oral Glucose Tolerance Test (OGTT)) with or without impaired fasting glucose (fasting glucose between 100 and 125 mg/dL) Stable body weight: gain or loss in body weight ≤ 5% body weight over last 3 months History of at least one unsuccessful effort of lifestyle modification to loose >5% of body weight, completed at least 3 months prior to screening. Subject may have been treated with either diet or exercise alone. Willingness to undergo screening and all study procedures and examinations (i.e., physical examinations and laboratory investigations before and after the treatment periods) and to wear a flash glucose monitoring device. Ability to comprehend subject information and willingness to sign the informed consent. Exclusion Criteria: Evidence of type 2 diabetes defined by fasting plasma glucose ≥ 126 mg/dL; 2-hour OGTT glucose ≥ 200 mg/dL Type I diabetes mellitus HbA1c ≥ 6.5% History of proliferative retinopathy or maculopathy Active COVID-19 infection proven by antigen positive Covid Test Treatment with any medication for weight loss within the past 3 months before screening. Prior or planned weight loss surgery for obesity Recent (within past 12 months) or planned endoscopic treatment for obesity. Proven history of bulimia or anorexia nervosa Eating habits consisting of eating relevant amounts of food throughout the night (after 10 p.m.; except if working on night shifts) Treatment with injectable anti-diabetic medications in the last 3 months (e.g., GLP-1 receptor agonists, insulin) Treatment with dipeptidyl peptidase-4 inhibitors in the last 3 months Confirmed medical history of liver cirrhosis Positive test on Viral hepatitis (HbsAG, HCV) Positive test on Human immunodeficiency virus (HIV) Cholestatic disease Alcohol-related liver disease including alcoholic fatty liver, alcoholic hepatitis and alcoholic cirrhosis evidenced by confirmed history of alcohol use, abnormal liver function tests defined below, and complete blood count (CBC), and/or liver biopsy. Abnormal liver function tests: Transaminases: Alanine aminotransferase (ALT) ≥ 3x upper limit of normal (ULN); or Aspartate aminotransferase (AST) ≥ 3x ULN; or Alkaline phosphatase (ALK) ≥2.5 x ULN or Total bilirubin ≥2 x ULN Stage 4 hypertension (systolic blood pressure (SBP) ≥ 180, diastolic BP (DBP) ≥ 110) History or presence of any uncontrolled cardiovascular, pulmonary, hepatobiliary, renal, hematological, gastrointestinal, endocrinologic, immunologic, dermatologic, neurological, psychiatric, metabolic, musculoskeletal, or malignant disease (except conditions accepted for inclusion) which the clinical investigator considers a disqualification for participation in the study. Prior or current treatment with drugs aimed to treat abnormal glucose homeostasis including oral antidiabetics, incretin analogues and/or insulin. History of uncontrolled illness (e.g. depression, psychosis) or behaviour that at the discretion of the investigator might confound the study results or pose additional risk in administering the study procedures. Illicit drug abuse Alcohol abuse Participation in another investigational drug/biologic or medical device study within 30 days of screening or will be enrolled in another investigational drug or medical device study or any study in which active subject participation is required outside normal hospital data collection during the course of the study. Failure to provide informed consent. Unwillingness or inability to comply with the study protocol or study-related procedures.