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AT-587

Phase 1

Hepatitis E | Small molecule | Infectious Disease |Atea Pharmaceuticals, Inc.|Last Updated: Jul 27, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment62

FDA Designations

No designations recorded

Clinical trial landscape

AT-587 · 1 trial · 1 indication

Phase 1 1
NCT07728487Study of AT-587 in Healthy SubjectsHepatitis E
RECRUITING62 Analytics
PHASE1RECRUITING
Study of AT-587 in Healthy Subjects
Hepatitis EUnlock trial analytics

Study Endpoints

Primary Endpoints

Proportions (active vs. Placebo) of subjects experiencing treatment-emergent adverse events
Day 1 up to Day 13

Secondary Endpoints

Pharmacokinetics (PK) of AT-587 (Cmax)
Day 1 up to Day 13
Pharmacokinetics (PK) of AT-587 (AUC)
Day 1 up to Day 13
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
AT-587 Dose 1 (Day 1)EXPERIMENTALAT-587 administered orally, dose 1 on Day 1
Placebo -Dose 1 (Day 1)PLACEBO_COMPARATORMatching placebo dose 1 administered orally on Day 1
AT-587 Dose 2 (Day 1 and Day 7)EXPERIMENTALAT-587 administrated orally, dose 2 on Day 1 and Day 7
Placebo-Dose 2 (Day 1 and Day 7)PLACEBO_COMPARATORMatching placebo dose 2 administered orally on Day 1 and Day 7
AT-587 Dose 3 - (Day 1)EXPERIMENTALAT-587 administered orally, dose 3 on Day 1
Placebo - Dose 3 - (Day 1)PLACEBO_COMPARATORMatching placebo dose 3 administered orally on Day 1
AT-587 Dose 4 - (Day 1)EXPERIMENTALAT-587 administered orally, dose 4 on Day 1
Placebo - Dose 4- (Day 1)PLACEBO_COMPARATORMatching placebo dose 4 administered orally on Day 1
AT-587 - Dose 5 (Day 1-7)EXPERIMENTALAT-587 - administered orally, dose 5 (QD) for 7 days
Placebo- Dose 5 (QD) (Day 1-7)PLACEBO_COMPARATORMatching placebo dose 5 administered orally once daily (QD) for 7 days
AT-587 - Dose 6 split (BID) (Day 1-7)EXPERIMENTALAT-587 administered orally, dose 6 daily split (BID) for 7 days
Placebo - Dose 6 (BID) (Day 1-7)PLACEBO_COMPARATORMatching placebo administered orally dose 6 daily split (BID) for 7 days
AT-587 - Dose 7 (QD) or split (BID) daily (Day 1-7)EXPERIMENTALAT-587 administered orally, dose 7 (QD) or split (BID) for 7 days
Placebo - Dose 7 (QD) or split (BID) (Day 1-7)PLACEBO_COMPARATORMatching placebo administered orally, dose 7 daily (QD) or split (BID) for 7 days

Interventions

NameTypeDescription
AT-587DRUGParallel Assignment
PlaceboOTHERParallel Assignment
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Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Body mass index (BMI) of 18-29 kg/m2 * Must agree to use protocol-specified methods of contraception * Negative pregnancy test * Willing to comply with the study requirements and to provide written informed consent Exclusion Criteria: * Pregnant or breastfeeding * Abuse of a...

Countries:Belgium
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Recent Changes (Last 90 Days)

LOWJul 27, 2026NCT07728487NEW_TRIAL: changed
LOWJul 27, 2026NCT07728487NEW_TRIAL: changed
LOWJul 27, 2026NCT07728487NEW_TRIAL: changed

Frequently asked questions about AT-587

What is AT-587 used for?

AT-587 is an investigational small molecule being developed for the treatment of Hepatitis E. It is currently in Phase 1 clinical development and is not yet approved by regulatory authorities.

Who is developing AT-587?

AT-587 is being developed by Atea Pharmaceuticals, Inc., a biopharmaceutical company traded on the NASDAQ under the ticker symbol AVIR.

What phase is AT-587 in?

AT-587 is in Phase 1 clinical development. It is an investigational drug and has not been approved for any use. A Phase 1 study is currently recruiting participants.

What clinical trials is AT-587 in?

AT-587 is being studied in a Phase 1 clinical trial with the identifier NCT07728487. This randomized, double-blind, placebo-controlled study is enrolling healthy subjects in Belgium and is currently recruiting.

Is AT-587 a small molecule?

Yes, AT-587 is a small molecule drug candidate. It is being investigated as a potential treatment for Hepatitis E, an infectious disease.