Investigating the effects of zelicapavir on heart rhythm in healthy adults

Phase 1, Randomized, Double-Blind Four-Period Crossover, Thorough QT/QTc Study to Evaluate the Effects of EDP-938 on Cardiac Repolarization in Healthy Adults

Phase 1 Interventional Enanta Pharmaceuticals, Inc · NCT06601192

This study tests how different doses of a new drug called zelicapavir affect heart rhythm in healthy adults aged 18 to 65.

Quick facts

PhasePhase 1
Study typeInterventional
Enrollment72 (estimated)
Ages18 Years to 65 Years
SexAll
SponsorEnanta Pharmaceuticals, Inc Industry-sponsored
Locations2 sites (Lenexa, Kansas and 1 other locations)
Trial IDNCT06601192 on ClinicalTrials.gov

What this trial studies

This study aims to evaluate how different doses of zelicapavir affect the corrected QT interval of the heart in healthy adult participants. It will compare the effects of therapeutic and supratherapeutic doses of the drug against a placebo and a positive control, moxifloxacin. The study will involve healthy individuals aged 18 to 65, who will be monitored for any changes in heart rhythm during the trial.

Who should consider this trial

Good fit: Ideal candidates for this study are healthy adults aged 18 to 65 with a BMI between 18 and 30 kg/m2.

Not a fit: Patients with a history of cardiovascular abnormalities or other significant health issues may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide insights into the cardiac safety profile of zelicapavir, potentially leading to safer treatment options for patients with RSV infections.

How similar studies have performed: Other studies have explored the cardiac effects of antiviral medications, but the specific approach of this study with zelicapavir is novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* An informed consent document signed and dated by the subject.
* Male or female individuals who are 18 to 65 years of age, inclusive
* Screening body mass index (BMI) of 18 to 30 kg/m2 with a minimum body weight of 50 kg
* Heterosexually active male participants and their female partners of childbearing potential must agree to use 2 effective birth control methods for the duration of the study and for 90 days after the last dose of study intervention.
* Females of childbearing potential must agree to use 2 effective birth control methods for the duration of the study and for 30 days after the last dose of study intervention.

Exclusion Criteria:

* Clinically relevant evidence or history of illness or disease
* Clinically relevant risk factors for cardiovascular abnormalities
* Pregnant or nursing females
* History of febrile illness within 7 days prior to the first dose of study drug or subjects with evidence of active infection
* Infection with HIV, HBV, HCV, or SARS CoV 2
* Any condition possibly affecting drug absorption (e.g., gastrectomy, cholecystectomy)
* Before the first dose of study intervention, participant has received any vaccine, an investigational agent or biological product within 28 days or 5 times the terminal half-life (t½), whichever is longer
* A positive urine drug screen at Screening or Day -1
* Current tobacco smokers or use of tobacco within 3 months prior to Screening
* History of regular alcohol consumption

Where this trial is running

Lenexa, Kansas and 1 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 RSV InfectionQTc Interval
Last reviewed 2026-06-10 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.