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Epetraborole

Phase 2

Mycobacterium Abscessus Infection | Small molecule | Other |AN2 Therapeutics, Inc.|Last Updated: May 6, 2026

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-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment84
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07301320Epetraborole in Patients With Mycobacterium Abscessus Lung DiseasePHASE2 RECRUITING 84Mar 30, 2026May 1, 2028May 6, 20261 United States
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Study Endpoints
Primary Endpoints
Clinical Response (NTM Symptom Evaluation Instrument) at Day 84
Day 1 to Day 84

Improvement in severity of at least 50% of the symptoms present at baseline and no deterioration in severity of symptoms present at baseline

Sputum culture conversion by Day 84
Day 1 to Day 84

Defined as 3 consecutive negative cultures one month apart without intervening or subsequent positives

Decrease in semi-quantitative sputum culture counts at Day 84
Day 1 to Day 84

Defined as improvement in sputum colony count category as defined by Griffith et al, 2015

Change from baseline in Quality of Life - Bronchiectasis (QOL-B) Respiratory Domain at Day 84
Day 1 to Day 84

QOL-B Domain scores range from 0 to 100, with higher scores indicating better health-related quality of life

Change from baseline in MACrO2 PRO at Day 84
Day 1 to Day 84

MACrO2 scores range from 0 to 100, with lower scores indicating better symptom-related quality of life

Sputum culture conversion by Day 56
Day 1 to Day 56

Defined as 2 consecutive negative cultures collected one month apart without intervening or subsequent positives

Secondary Endpoints
Patient Global Impression of Change (PGI-C) at Day 84
Day 1 to Day 84
Patient Global Impression of Severity (PGI-S) at Day 84
Day 1 to Day 84
Physician Visual Analog Scale (VAS) - Global at Day 84
Day 1 to Day 84
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
High Dose EpetraboroleEXPERIMENTALThis arm is a daily treatment regimen of a 750mg oral dose of Epetraborole.
Low Dose EpetraboroleEXPERIMENTALThis arm is a daily treatment regimen of a 500mg oral dose of Epetraborole.
High Dose PlaceboPLACEBO_COMPARATORThis arm is a daily treatment regimen of a placebo, matching the high dose experimental arm.
Low Dose PlaceboPLACEBO_COMPARATORThis arm is a daily treatment regimen of a placebo, matching the low dose experimental arm.
Interventions
NameTypeDescription
EpetraboroleDRUGHigh-dose intervention (750mg daily)
PlaceboDRUGPlacebo intervention (matching the high-dose experimental intervention)
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. Male or female patients who are 18 years of age or older. 2. Willing and able to provide written informed consent. 3. Patients with MABc lung disease, meeting the following (a) Microbiological, (b) Clinical, (c) Radiographic a. Microbiological criteria: i. Documentation o...

Countries:United States
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Recent Changes (Last 90 Days)
MEDIUMMay 26, 2026NCT07301320Status: NOT_YET_RECRUITING → RECRUITING
LOWMay 24, 2026NCT07301320studyFirstPostDate: changed