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TP-05

Phase 2

Lyme Disease | Small molecule | Infectious Disease |Tarsus Pharmaceuticals, Inc.|Trials Updated: Jul 9, 2026

TP-05 target and mechanism

Molecular targetGABA-Cl channels
ModalitySmall molecule

Also known as TP-05 (lotilaner) Low Dose, TP-05 Low Dose, TP-05 (lotilaner oral capsules), Low Dose TP-05

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment722

FDA Designations

No designations recorded

TP-05 clinical trials

TP-05 · 1 trial · 1 indication

Phase 2 1
NCT07562087A Study to Evaluate Safety and Efficacy of TP-05 in Healthy Participants With Tick ExposureLyme Disease
ACTIVE NOT_RECRUITING722 Analytics
PHASE2ACTIVE NOT_RECRUITING
A Study to Evaluate Safety and Efficacy of TP-05 in Healthy Participants With Tick Exposure
Lyme DiseaseUnlock trial analytics

Study Endpoints

Primary Endpoints

The Incidence of Treatment Emergent Adverse Events From Baseline
From day 1 through the end of study follow-up, an average of 15 months.

Safety and tolerability will be evaluated by incidence rate of treatment emergent adverse events from baseline.

Clinically Significant Changes From Baseline Chemistry Laboratory Tests
From day 1 through the end of study follow up, an average of 15 months.

Number of participants with clinically significant changes in clinical laboratory tests

Clinically Significant Changes From Baseline Hematology Laboratory Tests
From day 1 through the end of study follow up, an average of 15 months.

Number of participants with clinically significant changes in clinical laboratory tests.

Clinically Significant Changes From Baseline Vital Signs
From day 1 through the end of study follow up, an average of 15 months.

Number of participants with clinically significant changes in vital signs.

Clinically Significant Changes From Baseline Electrocardiograms (ECGs)
From day 1 through the end of study follow up, an average of 15 months.

Safety will be assessed by evaluating clinically significant changes from Baseline ECGs change in mean ventricular rate \[beats/min\].

Clinically Significant Changes From Baseline Electrocardiograms (ECGs) Measures
From day 1 through the end of study follow up, an average of 15 months.

Safety will be assessed by evaluating clinically significant changes from Baseline ECGs change in pulse rate \[msec\].

Clinically Significant Changes From Baseline QTC Interval
From day 1 through the end of study follow up, an average of 15 months.

Safety will be assessed by evaluating clinically significant changes from Baseline ECGs change in QTC interval

Clinically Significant Changes From Baseline QRS Interval
From day 1 through the end of study follow up, an average of 15 months.

Safety will be assessed by evaluating clinically significant changes from Baseline ECGs change in QRS interval.

Secondary Endpoints

Concentration of Lotilaner in Whole Blood
From dose through study completion, an average of 15 months.
Terminal Elimination Half Life (t½) of Lotilaner
At protocol specified timepoints through end study treatment phase, an average of 28 weeks.
Area Under the Concentration Time Curve (AUC) of Lotilaner
At protocol specified timepoints through end of pharmacokinetic sampling, an average of 15 months.
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
TP-05 (lotilaner) High DoseACTIVE_COMPARATOROral Tablet
PlaceboPLACEBO_COMPARATOROral Tablet
TP-05 (lotilaner) Low DoseACTIVE_COMPARATOROral Tablet

Interventions

NameTypeDescription
TP-05 (lotilaner) Low DoseDRUGTP05 administered orally at the protocol-defined preventative dose.
TP-05 (lotilaner) High DoseDRUGTP05 administered orally at the protocol-defined preventative dose.
PlaceboDRUGMatching placebo administered orally according to the same dosing schedule as TP05.
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Eligibility Criteria

Age Range18 Years to 70 Years
SexALL
Healthy VolunteersYes
Study Sites19

Inclusion Criteria: * Overtly healthy adult participants aged 18 to 70 years * Able to provide written informed consent * Willing and able to comply with study procedures * At high risk of exposure to ticks * Contraceptive use by men and women consistent with local regulations Exclusion Criteria: ...

Countries:United States
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Frequently asked questions about TP-05

What is TP-05 used for?

TP-05 is an investigational oral small molecule being developed for the prevention of Lyme disease in healthy adults with tick exposure. It is not approved for any indication and remains in clinical development. Tarsus Pharmaceuticals is evaluating it in a Phase 2 trial in the United States.

How does TP-05 work?

TP-05 targets GABA-Cl channels. By acting on these chloride channels, the drug is designed to interfere with tick biology following a blood meal, an approach being studied for Lyme disease prevention in people with tick exposure. The exact clinical effect in humans is still being evaluated in a Phase 2 trial.

Who is developing TP-05?

TP-05 is being developed by Tarsus Pharmaceuticals, Inc., which trades on the Nasdaq under the ticker TARS. The company is running a Phase 2 study of the oral lotilaner candidate in healthy participants with tick exposure, with Lyme disease as the condition under study.

What phase is TP-05 in?

TP-05 is in Phase 2 development. The single registered trial, NCT07562087, is a Phase 2 study that is active but not recruiting. TP-05 is investigational and has not been approved by the FDA for Lyme disease or any other indication.

What clinical trials is TP-05 in?

TP-05 is being studied in NCT07562087, titled A Study to Evaluate Safety and Efficacy of TP-05 in Healthy Participants With Tick Exposure. This Phase 2 trial is randomized, double-blind, and placebo-controlled, with 722 participants enrolled in the United States. It is active but not recruiting.

Is TP-05 the same as TP-05 (lotilaner) Low Dose?

Yes. TP-05 is also referred to as TP-05 (lotilaner) Low Dose, TP-05 Low Dose, TP-05 (lotilaner oral capsules), TP-05 (lotilaner oral), and the fasted group or Low Dose TP-05. These names all refer to the same Tarsus Pharmaceuticals oral lotilaner candidate in Phase 2 for Lyme disease.