Study to Evaluate Safety and Activity of TRL345 in Healthy Volunteers

Not yet recruiting
Trial end date:
Target enrollment:
Participant gender:
This study in healthy volunteers will provide a basis for evaluation of TRL345 as a first in human study, specifically, important safety, tolerability, and pharmacokinetic data, and provide serum samples for ex vivo studies of concentration-dependent antiviral activity to support the dose selection for as well as design and conduct of a clinical study in transplant patients.
Phase 1
Accepts Healthy Volunteers?
Accepts Healthy Volunteers
Lead Sponsor:
Trellis Bioscience LLC
National Institute of Allergy and Infectious Diseases (NIAID)
Antibodies, Monoclonal
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

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

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. Concurrent acute or chronic infections (e.g., viral infections, except chronic
recurrent herpes simplex infections)

7. Significant abnormal safety labs, defined as:

1. 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

2. Aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline
phosphatase (ALP), direct bilirubin or indirect bilirubin >2 x the upper limit of

3. Activated partial thromboplastin time (aPTT) prolongation >1.5 x ULN

4. Renal function based on the, i.e., estimated creatinine clearance < 70 mL/min
(Cockcroft-Gault formula using ideal body weight)

5. Hemoglobin ≤ 128 g/L (males) and ≤ 115 g/L (females), and hematocrit ≤ 37%
(males) and ≤ 32.0% for females

8. Positive test results for HIV, Hepatitis B (HBsAg), or Hepatitis C (HCV) at the
Screening Visit

9. History of significant drug abuse within one year prior to the Screening Visit and/or

10. 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)

11. Positive test for drugs of abuse, ETOH and nicotine (cotinine) at the Screening Visit

12. Positive serum beta-human chorionic gonadotropin test for pregnancy, pregnant, or
nursing women

13. Unwilling to refrain from donating blood or plasma during the study

14. Use of any new prescription medication or over-the-counter (OTC) product (including
natural food supplements, vitamins, herbs) within 14 days prior to dosing

15. Receipt of any vaccine or booster within 14 days prior to Day 1 or planned vaccination
or booster within 4 weeks after IP administration

16. Any planned medical intervention or personal event that might interfere with the
ability to comply with the study requirements

17. 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

18. 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

19. 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