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CompletedNCT06917508Updated Jul 1, 2025

A Study to Evaluate the Drug-Drug Interaction of EDP-323 With Midazolam, Caffeine, and Rosuvastatin in Healthy Participants

A Phase 1 interventional study of EDP-323 and Midazolam in RSV Infection and Drug Drug Interaction, sponsored by Enanta Pharmaceuticals, Inc. Completed at 1 site in United States. Open to participants aged 18 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-07-01.

Sponsored by Enanta Pharmaceuticals, Inc · Phase 1, Interventional, and Basic science

From the registry’s dates

  • Primary completion was Jun 2025, 1 year 4 months ago, and no results have been posted to the registry.
Phase
Phase 1
Study type
Interventional
Enrollment
24
Allocation
Not applicable
Ages
18 Years to 65 Years
Sex
All
01

Study summary

The primary aim of this study is to assess the effect of EDP-323 on the pharmacokinetics and safety of midazolam, caffeine, and rosuvastatin in healthy adult participants.

02

Conditions studied

  • RSV Infection
  • Drug Drug Interaction

Keywords

  • Drug Drug Interaction
03

In context

Respiratory Syncytial Virus Infections

293 studies on the registry are indexed under Respiratory Syncytial Virus Infections; 45 are open to participants now.

This study's enrollment of 24 is below the median of 90 across 213 interventional studies indexed under Respiratory Syncytial Virus Infections.

Browse Respiratory Syncytial Virus Infections studies →

Lead sponsor

Enanta Pharmaceuticals, Inc is the lead sponsor of 45 studies on the registry; 2 are open to participants now.

Of its 33 completed or terminated interventional studies of FDA-regulated products, 10 (30%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • An informed consent document signed and dated by the subject
  • Healthy male and female subjects of any ethnic origin between the ages of 18 and 65 years, inclusive
  • Screening body weight >50 kg and body mass index (BMI) of 18 to 32 kg/m2
  • Female subjects of childbearing potential must agree to use two effective methods of contraception from the date of Screening until 30 days after the last dose of EDP-323. A male participant who has not had a vasectomy and is sexually active with a woman of childbearing potential must agree to use effective contraception from the date of Screening to 90 days after his last dose of study drug.

Exclusion criteria

Exclusion Criteria:

  • Clinically relevant evidence or history of illness or disease
  • 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
  • Any condition possibly affecting drug absorption (e.g., gastrectomy, cholecystectomy)
  • Positive for HIV or hepatitis
  • Positive urine drug screen
  • Current tobacco smokers or use of tobacco within 3 months prior to Screening.
  • Received any vaccine, an investigational agent, or biological product within 28 days or 5 times the t½ of receipt of study drug, whichever is longer.
  • Drug sensitivity to midazolam, caffeine, rosuvastatin
05

Study design

Phase
Phase 1
Primary purpose
Basic science
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
24 participants (actual)

Study arms

  • Experimental
    EDP-323, midazolam, caffeine and rosuvastatin

    Subjects will receive EDP-323, midazolam, caffeine and rosuvastatin throughout the treatment period on respective dosing days

    Drug: EDP-323 · Drug: Midazolam · Drug: Caffeine · Drug: Rosuvastatin

Interventions

  • DrugEDP-323

    Subjects will receive EDP-323 once daily on Days 5-15

  • DrugMidazolam

    Subjects will receive midazolam once daily on Days 1 and 12

  • DrugCaffeine

    Subjects will receive caffeine once daily on Days 1 and 12

  • DrugRosuvastatin

    Subjects will receive rosuvastatin once daily on Days 2 and 13

06

What researchers measure

Primary outcomes

  1. Cmax of midazolam, caffeine, and rosuvastatin with and without the coadministration of EDP-323

    Time frame: Up to 17 Days

  2. AUC of midazolam, caffeine, and rosuvastatin with and without the coadministration of EDP-323

    Time frame: Up to 17 Days

Secondary outcomes

  1. Safety measured by adverse events

    Time frame: Up to 22 days

07

Study locations

1 site
  • ICON, plc
    San Antonio, Texas 78209, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 1, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06917508
Lead sponsor
Enanta Pharmaceuticals, Inc
Responsible party
Sponsor
First posted
Apr 8, 2025
Start date
Mar 13, 2025
Primary completion
Jun 6, 2025
Completion
Jun 13, 2025
Last update
Jul 1, 2025

Study contacts

Enanta Pharmaceuticals, Inc
study director · Enanta Pharmaceuticals, Inc

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jun 2025. You cannot join it, but the record below documents what was studied.

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