Recent Updates
Recently added Catalysts

TRX-100

Phase 2

Influenza | Small molecule | Infectious Disease |Traws Pharma, Inc.|Last Updated: Aug 3, 2026

Target and mechanism

Molecular targetCAP-dependent endonuclease
Target classProtein
ModalitySmall molecule

Success Probability

Subscribe to view

Market & Valuation

Subscribe to view

Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLED
Total Trials2
Total Enrollment270

FDA Designations

No designations recorded

Clinical trial landscape

TRX-100 · 4 trials · 3 indications

Phase 2 2Phase 1 2
NCT07503405Phase 2a Study of the Efficacy and Safety of TRX-100 in a Human Influenza A Challenge ModelInfluenza
NOT YET_RECRUITING165 Analytics
NCT07371650This is an Early-stage Clinical Trial to Determine a Safe and Effective Dose for Tivoxavir Marboxil in Patients With Mild to Moderate InfluenzaInfluenza
ACTIVE NOT_RECRUITING105 Analytics
PHASE2NOT YET_RECRUITING
Phase 2a Study of the Efficacy and Safety of TRX-100 in a Human Influenza A Challenge Model
InfluenzaUnlock trial analytics
PHASE2ACTIVE NOT_RECRUITING
This is an Early-stage Clinical Trial to Determine a Safe and Effective Dose for Tivoxavir Marboxil in Patients With Mild to Moderate Influenza
InfluenzaUnlock trial analytics

Study Endpoints

Primary Endpoints

Laboratory-Confirmed Infection
From Day 1 (pm) up to Day 8 (am)

Defined as at least 2 quantifiable (≥LLOQ) qRT-PCR samples reported over 4 planned consecutive assessments within 48 hours.

Symptoms of Grade ≥2
From Day 1 (am) to Day 8 (am)

At least one incidence of a symptom from the symptom diary card of grade ≥2.

Incidence of AE/SAE
up to Day 28

Number of participants with Adverse Events (AEs), serious Adverse Events (SAEs) (including withdrawals due to AEs)

Incidence of abnormal laboratory tests results
Up to Day 28

Number of participants with abnormal laboratory tests results

Incidence of abnormal clinically significant ECG results
Up to 28 days
Number of participants with abnormal physical examinations findings
Up to 28 days
Incidence, severity, and relationship of treatment-emergent adverse events
From administration of study drug on Day 1 through the end-of-study visit on Day 28 (±2 days).

Number and percentage of participants with treatment-emergent adverse events, summarized by severity and relationship to study drug.

Incidence of serious adverse events and adverse events leading to discontinuation
From administration of study drug on Day 1 through the end-of-study visit on Day 28 (±2 days).

Number and percentage of participants with serious adverse events and adverse events leading to discontinuation from the study.

To assess the safety and tolerability of a single oral administration of TRX-100
up to Day 28

Incidence, severity and relationship of AEs/serious AEs (SAEs) (including withdrawals due to AEs)

To assess the safety and tolerability of a single oral administration of TRX-100 a
up to Day 28

Change from baseline in QT interval (miliseconds)

Secondary Endpoints

Area Under the Viral Load-Time Curve
From Day 1 (pm) to Day 8 (am)
Viral Load Area Under the Curve by Viral Culture
From Day 1 (pm) to Day 8 (am)
Peak Viral Load by qRT-PCR
From Day 1 (pm) to Day 8 (am)
Unlock Study Endpoints

Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
TRX-100 Timing 1EXPERIMENTALParticipants in this arm will receive single oral dose of the investigational drug, TRX-100.
TRX-100 Timing 2EXPERIMENTALParticipants in this arm will receive single oral dose of the investigational drug, TRX-100.
TRX-100 Timing 3EXPERIMENTALParticipants in this arm will receive single oral dose of the investigational drug, TRX-100.
TRX-100 Timing 4EXPERIMENTALParticipants in this arm will receive single oral dose of the investigational drug, TRX-100.
Placebo Timing 1PLACEBO_COMPARATORParticipants in this arm will receive single oral dose of the Placebo.
Placebo Timing 2PLACEBO_COMPARATORParticipants in this arm will receive single oral dose of the Placebo.
Placebo Timing 3PLACEBO_COMPARATORParticipants in this arm will receive single oral dose of the Placebo.
Placebo Timing 4PLACEBO_COMPARATORParticipants in this arm will receive single oral dose of the Placebo.
TRX-100 Dose Level 1EXPERIMENTALParticipants in this arm will receive a lower single oral dose of the investigational drug, TRX-100.
TRX-100 Dose Level 2EXPERIMENTALParticipants in this arm will receive a higher single oral dose of the investigational drug, TRX-100.
Standard of Care (SOC)ACTIVE_COMPARATORParticipants in this arm will not receive the investigational drug. Instead, they will receive the current standard of care treatment. This arm serves as a comparator to evaluate the effects of the investigational drug.
Cohort A: 240 mg tablets, fedEXPERIMENTALUp to 8 healthy volunteers will be randomized 6:2 to receive a single oral dose of TRX-100 240 mg tablets or matching tablet placebo, respectively, under fed conditions.
Cohort B: 480 mg tablets, fastedEXPERIMENTALUp to 8 healthy volunteers will be randomized 6:2 to receive a single oral dose of TRX-100 480 mg tablets or matching tablet placebo, respectively, under fasted conditions.
Cohort C: 480 mg tablets, fedEXPERIMENTALUp to 8 healthy volunteers will be randomized 6:2 to receive a single oral dose of TRX-100 480 mg tablets or matching tablet placebo, respectively, under fed conditions. Dosing will begin only after Safety Review Committee review of available blinded safety data and initial pharmacokinetic data from Cohort A.
Cohort D: 480 mg capsules, fedEXPERIMENTALUp to 8 healthy volunteers will be randomized 6:2 to receive a single oral dose of TRX-100 480 mg capsules or matching capsule placebo, respectively, under fed conditions. Dosing will begin after completion of Cohort C.
Single dose level 1 or placeboEXPERIMENTALSAD dose level 1
Single dose level 2 or placeboEXPERIMENTALSAD dose level 2
Single dose level 3 or placeboEXPERIMENTALSAD dose level 3
Single dose level 4 or placeboEXPERIMENTALSAD dose level 4

Interventions

NameTypeDescription
TRX-100DRUGA single oral dose in capsules
PlaceboDRUGA single oral dose in capsules
Influenza A/France/759/2021 (H1N1) virusBIOLOGICALA single dose of challenge agent will be delivered Intranasal
Standard of Care (SOC)DRUGStandard of Care Influenza Antiviral therapy
Unlock Study Design Details

Eligibility Criteria

Age Range18 Years to 55 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: 1. Written informed consent signed and dated by the participant and the PI/investigator obtained before any assessment is performed. 2. Aged between 18 and 55 years old on the day prior to signing the consent form, inclusive. 3. A total body weight ≥50 kg and body mass index (BM...

Countries:United KingdomAustralia
Unlock Eligibility Criteria

Recent Changes (Last 90 Days)

MEDIUMAug 3, 2026NCT07526506Enrollment: 24 → 32

Frequently asked questions about TRX-100

What is TRX-100 used for?

TRX-100, also known as tivoxavir marboxil, is an investigational small molecule being developed for the treatment of influenza. It is currently being studied in healthy volunteers and in patients with mild to moderate influenza, including a human influenza A challenge model.

What does TRX-100 target?

TRX-100 targets the CAP-dependent endonuclease, a protein essential for influenza virus replication. By inhibiting this enzyme, the drug aims to block viral replication and reduce the severity and duration of influenza infection.

Who makes TRX-100?

TRX-100 is being developed by Traws Pharma, Inc., a biopharmaceutical company listed on the NASDAQ under the ticker symbol TRAW. The company is conducting clinical trials of TRX-100 in Australia and the United Kingdom.

What phase is TRX-100 in?

TRX-100 is in Phase 2 clinical development. It has completed a Phase 1 study in healthy volunteers and is currently being evaluated in Phase 2 trials for influenza, including a human challenge model study. It is not yet approved by regulatory authorities.

What clinical trials is TRX-100 in?

TRX-100 is being studied in several clinical trials. NCT06757738 is a completed Phase 1 study in healthy volunteers. NCT07371650 is an active Phase 2 trial in patients with mild to moderate influenza. NCT07503405 is a planned Phase 2a human influenza challenge study, and NCT07526506 is a recruiting Phase 1 study in healthy volunteers.

Is TRX-100 the same as tivoxavir marboxil?

Yes, TRX-100 is also known as tivoxavir marboxil. The drug is referred to by both names in clinical trial documentation, with TRX-100 being the investigational code name and tivoxavir marboxil the proposed generic name.