Assessing the safety and effectiveness of ABI-5366 for recurrent genital herpes

A Phase 1a/1b, Blinded, Placebo-Controlled Study of the Safety, Tolerability and Pharmacokinetics of Single- and Multiple-Ascending Doses of ABI-5366 in Healthy Subjects and in Subjects Who Are Seropositive for Herpes Simplex Virus Type 2 with Recurrent Genital Herpes

Phase 1 Interventional Assembly Biosciences · NCT06385327

This study is testing a new drug called ABI-5366 to see if it is safe and effective for people with recurrent genital herpes.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment146 (estimated)
Ages18 Years to 60 Years
SexAll
SponsorAssembly Biosciences Industry-sponsored
Locations8 sites (Miranda, New South Wales and 7 other locations)
Trial IDNCT06385327 on ClinicalTrials.gov

What this trial studies

This study evaluates the safety, tolerability, and pharmacokinetics of ABI-5366 in two parts. Part A involves healthy participants receiving single ascending doses, while Part B focuses on individuals with recurrent genital herpes caused by HSV-2 receiving multiple ascending doses. The study also examines the effect of food on the drug's pharmacokinetics. Participants will be monitored for safety and antiviral activity throughout the trial.

Who should consider this trial

Good fit: Ideal candidates include healthy adults and individuals seropositive for HSV-2 with recurrent genital herpes who meet specific health criteria.

Not a fit: Patients with significant health issues other than HSV infection or those outside the specified BMI range may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for individuals suffering from recurrent genital herpes.

How similar studies have performed: While there have been studies on antiviral treatments for HSV-2, the specific approach of ABI-5366 is novel and has not been extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Part A: Inclusion Criteria:

* Subject has a body mass index (BMI) between ≥ 18.0 and \< 32.0 kg/m2
* In good health (as determined by the Investigator) based on medical history, physical examination, ECG, and clinical laboratory results.
* Female subjects must be non-pregnant and have a negative serum pregnancy test at Screening and a negative urine pregnancy test at Day -1 or Day 1 (predose)
* Agreement to comply with protocol-specified contraceptive requirements

Part B: Inclusion Criteria:

* Subject has a body mass index (BMI) between ≥ 18.0 and \< 32.0 kg/m2
* Other than HSV infection, is in good health (as determined by the Investigator) based on medical history, physical examination, ECG, and clinical laboratory results.
* Female subjects must be non-pregnant and have a negative serum pregnancy test at Screening and a negative urine pregnancy test at Day 1 (predose)
* Agreement to comply with protocol-specified contraceptive requirements

Part A and B: Exclusion Criteria:

* Current infection of human immunodeficiency virus (HIV), hepatitis B virus (HBV), hepatitis C virus (HCV), acute hepatitis A virus (HAV), or acute hepatitis E virus (HEV).
* History of any illness that, in the opinion of the Investigator, might confound the results of the study, pose an additional risk in administering study drug to the subject, or a condition known to interfere with the absorption/distribution/elimination of drugs.
* History of any significant drug-related allergic reactions such as anaphylaxis, Stevens-Johnson syndrome, urticaria, or multiple drug allergies
* History of persistent alcohol abuse or illicit drug abuse within 3 years prior to Screening
* Has participated in a clinical study involving administration of either an investigational or a marketed drug within 30 days or 5 half-lives before Screening, whichever is longer.

Where this trial is running

Miranda, New South Wales and 7 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Recurrent Genital Herpes Simplex Type 2ABI-5366PKHealthy ParticipantsHSV-2Recurrent Genital Herpes
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.