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EDP-938

Phase 2

RSV Infection | Small molecule | Infectious Disease |Enanta Pharmaceuticals, Inc.|Last Updated: Jul 1, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindCONTROLLEDBiomarker
Total Trials6
Total Enrollment509
FDA Designations
No designations recorded
Clinical Trials (6)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05568706A Study of EDP-938 in Non-hospitalized Adults With RSV Who Are at High Risk for Complications.PHASE2 COMPLETED 186Nov 29, 2022Jun 23, 2025Jul 1, 202584 United States, Argentina +10
NCT04871724Drug-Drug Interaction Study Between Fluconazole and EDP-938 in Healthy SubjectsPHASE1 COMPLETED 24Mar 12, 2021Apr 16, 2021May 4, 20211 United States
NCT04498741Drug-Drug Interaction Study Between EDP-938, Tacrolimus, Dabigatran, Rosuvastatin and Midazolam in Healthy SubjectsPHASE1 COMPLETED 89Jul 8, 2020Jun 1, 2021Oct 13, 20211 United States
NCT03755778Drug-Drug Interaction Study Between EDP-938, Itraconazole, Rifampin, and Quinidine in Healthy SubjectsPHASE1 COMPLETED 72Nov 29, 2018Jan 27, 2019Jun 14, 20191 United States
NCT03750383Drug-Drug Interaction Study Between EDP-938, Cyclosporine and Prednisone in Healthy Adult SubjectsPHASE1 COMPLETED 48Nov 2, 2018Dec 13, 2018Feb 12, 20191 United States
NCT03384823A Study of EDP-938 in Healthy SubjectsPHASE1 COMPLETED 90Dec 7, 2017Jul 3, 2018Oct 10, 20181 United States
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Study Endpoints
Primary Endpoints
Time to resolution of RSV Lower Respiratory Tract Disease (LRTD) symptoms
Day 1 through Day 33
Cmax of EDP-938 with and without coadministration with fluconazole
Up to 19 days
AUC of EDP-938 with and without coadministration with fluconazole
Up to 19 days
Cmax of tacrolimus with and without coadministration with EDP-938
up to 29 days
AUC of tacrolimus with and without coadministration with EDP-938
up to 29 days
Cmax of dabigatran with and without coadministration with EDP-938
up to 17 days
AUC of dabigatran with and without coadministration with EDP-938
up to 17 days
Cmax of rosuvastatin with and without coadministration with EDP-938
up to 17 days
AUC of rosuvastatin with and without coadministration with EDP-938
up to 17 days
Cmax of midazolam with and without coadministration with EDP-938
up to 17 days
AUC of midazolam with and without coadministration with EDP-938
up to 17 days
Cmax of EDP-938 with and without coadministration with itraconazole
Up to 19 days
AUC of EDP-938 with and without coadministration with itraconazole
Up to 19 days
Cmax of EDP-938 with and without coadministration with rifampin
Up to 17 days
AUC of EDP-938 with and without coadministration with rifampin
Up to 17 days
Cmax of EDP-938 with and without coadministration with quinidine
Up to 13 days
AUC of EDP-938 with and without coadministration with quinidine
Up to 13 days
Cmax of EDP-938 with and without coadministration with cyclosporine
Up to 12 days
AUC of EDP-938 with and without coadministration with cyclosporine
Up to 12 days
Cmax of EDP-938 with and without coadministration with prednisone
Up to 21 days
AUC of EDP-938 with and without coadministration with prednisone
Up to 21 days
Safety measured by adverse events, physical exams, vital signs, 12-lead electrocardiograms (ECGs) and clinical lab results (including chemistry, hematology, and urinalysis).
Up to 8 days
Secondary Endpoints
Time to resolution of LRTD symptoms and 2 systemic symptoms
Day 1 through Day 33
Time to resolution of all RSV symptoms
Day 1 through Day 33
Change from Baseline in severity of RSV LRTD symptoms
Day 1 through Day 33
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
EDP-938EXPERIMENTALEDP-938 800 mg, once daily
PlaceboPLACEBO_COMPARATORMatching placebo, once daily
EDP-938 and Fluconazole interactionEXPERIMENTAL -
EDP-938 and tacrolimus interaction (Part 1)EXPERIMENTAL -
EDP-938 and dabigatran interaction (Part 2)EXPERIMENTAL -
EDP-938 and rosuvastatin interaction (Part 3)EXPERIMENTAL -
EDP-938 and midazolam interaction (Part 4)EXPERIMENTAL -
EDP-938 and itraconazole interaction (Part 1)EXPERIMENTAL -
EDP-938 and rifampin interaction (Part 2)EXPERIMENTAL -
EDP-938 and quinidine interaction (Part 3)EXPERIMENTAL -
EDP-938 and cyclosporine interaction (Part 1)EXPERIMENTAL -
EDP-938 and prednisone interaction (Part 2)EXPERIMENTAL -
EDP-938 SAD CohortsEXPERIMENTALEDP-938 Dose 1, Dose 2, Dose 3, Dose 4, Dose 5, and Dose 6 oral suspension, once daily in one single administration
EDP-938 MAD CohortsEXPERIMENTALEDP-938 Dose 1, Dose 2, Dose 3, and Dose 4 oral suspension, once daily for 7 days
EDP-938 SAD Placebo CohortPLACEBO_COMPARATORMatching placebo, oral suspension, once daily in one single administration
EDP-938 MAD Placebo CohortPLACEBO_COMPARATORMatching placebo, oral suspension, once daily for 7 days
Interventions
NameTypeDescription
EDP-938DRUGSubjects will take EDP-938 once daily for 5 days
PlaceboDRUGSubjects will take matching placebo, once daily for 5 days
FluconazoleDRUGSubjects will receive fluconazole once daily on Days 5 to 18
TacrolimusDRUGSubjects will receive tacrolimus once daily on Day 1 and Day 24
DabigatranDRUGSubjects will receive dabigatran once daily on Day 1 and Day 13
RosuvastatinDRUGSubjects will receive rosuvastatin once daily on Day 1 and Day 13
MidazolamDRUGSubjects will receive midazolam once daily on Day 1 and Day 16
ItraconazoleDRUGSubjects will receive itraconazole once daily from Day 5 to Day 18
RifampinDRUGSubjects will receive rifampin once daily from Day 5 to Day 16
QuinidineDRUGSubjects will receive quinidine once daily from Day 5 to Day 12
CyclosporineDRUGSubjects will receive one dose of cyclosporine on Day 5
PrednisoneDRUGSubjects will receive prednisone once daily from Day 5 to Day 14
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites84

Inclusion Criteria: * At least one of the following conditions that predispose them to complications after RSV infection: 1. Age ≥65 years 2. Congestive heart failure (CHF) 3. Asthma 4. Chronic obstructive pulmonary disease (COPD) * The subject has a new onset of any of the following sympt...

Countries:United StatesArgentinaBulgariaColombiaCzechiaMalaysiaMexicoPolandSlovakiaSouth AfricaSpainTaiwan
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