Study to Evaluate Safety and Activity of TRL345 in Healthy Volunteers

Inclusion Criteria: 1. Healthy male and non-pregnant, non-breast-feeding female subjects at between 18 and 65 years of age, inclusive, and representative of the general population 2. Willing and able to provide written informed consent. 3. Availability for the entire duration of the study, and willingness to adhere to protocol requirements 4. In good health, as determined by lack of clinically significant abnormalities in health assessments performed at the Screening Visit, as judged by the Principal Investigator (PI) or as delegated by the PI to a physician or nurse practitioner as sub-investigator. 5. Men and women of childbearing potential (WOCBP) must be willing to practice a highly effective method of contraception that may include, but is not limited to, abstinence, sex only with persons of the same sex, monogamous relationship with vasectomized partner, vasectomy, hysterectomy, bilateral tubal ligation, licensed hormonal methods, or intrauterine device (IUD) for 28 days before Screening and through Day 76. Men must also refrain from donating sperm from Day 1 through Day 76. Exclusion Criteria: 1. Inability to tolerate blood draws or has poor venous access 2. Body mass index (BMI) \<18.5 or ≥35 kg/m2 3. Clinically significant vital sign abnormalities (systolic blood pressure lower than 90 or over 160 mmHg; diastolic blood pressure lower than 50 or over 100 mmHg; or, heart rate less than 45 or over 100 bpm) at the Screening Visit 4. ECG with clinically significant findings, including: 1. Conduction disturbance (complete left or complete right bundle branch block or nonspecific intraventricular conduction disturbance with QRS ≥120 msec, PR interval ≥220 msec, any second- or third-degree atrioventricular block, or prolongation of the QT interval corrected according to Fridericia's correction \[\>450 msec male and \>460 msec female\]) 2. Significant repolarization (ST-segment or T-wave) abnormality; or 3. Significant atrial or ventricular arrhythmia; or 4. Frequent atrial or ventricular ectopy (e.g., frequent premature atrial contractions, 2 premature ventricular contractions in a row); or 5. ST-elevation consistent with ischemia or evidence of past or evolving myocardial infarction. 5. Presence of any gastrointestinal pathology (e.g., chronic diarrhea, inflammatory bowel diseases), unresolved gastrointestinal symptoms (e.g., diarrhea, vomiting),or progressive liver or kidney disease 6. Diagnosis of diabetes mellitus 7. History of acute or chronic pancreatitis or upper right quadrant postprandial discomfort or pain within the last 2 years 8. Clinically relevant medical conditions that, in the opinion of the PI, may interfere with the evaluation of the trial drug, e.g., progressive cardiovascular disease 9. Concurrent acute or chronic infections (e.g., viral infections, except chronic recurrent herpes simplex infections) 10. Significant abnormal safety labs, defined as: * Greater than 30% outside of the normal range for any of the following: hemoglobin, white blood cell (WBC) count, platelet count, neutrophil count and blood urea nitrogen * Aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), direct bilirubin or indirect bilirubin \>2 × the upper limit of normal * Activated partial thromboplastin time (aPTT) prolongation \>1.5 x ULN * Hemoglobin A1C (HbA1C) \>5.6% * Fasting glucose level of ≥100 mg/dl (5.6 mmol/L) * Renal function based on the, i.e., estimated creatinine clearance \< 70 mL/min (Cockcroft-Gault formula using ideal body weight) * Hemoglobin ≤ 128 g/L (males) and ≤ 115 g/L (females), and hematocrit ≤ 37% (males) and ≤ 32.0% for females 11. Positive test results for HIV, Hepatitis B (HBsAg), or Hepatitis C (HCV) at the Screening Visit 12. History of significant drug abuse within one year prior to the Screening Visit and/or ongoing 13. History of significant alcohol abuse within one year prior to the Screening Visit defined as more than fourteen units of alcohol per week \[one "unit" is equal to approximately ½ pint \[200 mL\] of beer, 1 small glass \[100 mL\] of wine, or 1 measure \[25 mL\] of spirits) 14. Positive test for drugs of abuse, ETOH and nicotine (cotinine) at the Screening Visit 15. Positive serum beta-human chorionic gonadotropin test for pregnancy, pregnant, or nursing women 16. Unwilling to refrain from donating blood or plasma during the study. 17. Use of any new prescription medication or over-the-counter (OTC) product (including natural food supplements, vitamins, herbs) within 14 days prior to dosing 18. Receipt of any vaccine or booster within 14 days prior to Day 1 or planned vaccination or booster within 4 weeks after IP administration 19. Any planned medical intervention or personal event that might interfere with the ability to comply with the study requirements 20. Is current study site staff paid entirely or partially by the contract for this trial, or staff who are supervised by the PI or sub-PI 21. Receipt of an investigational product, or participation in another trial involving a marketed or investigational drug within 30 days of Day 1, or 5 half-lives of the investigational drug, whichever is longer 22. Any other comorbidity or condition that, in the opinion of the Investigator would make the subject unsuitable for the study or unable to comply with the study requirements