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Lotilaner, 2.0%

Phase 2

Ocular Rosacea | Small molecule | Dermatology |Tarsus Pharmaceuticals, Inc.|Last Updated: Mar 2, 2026

Target and mechanism

Molecular targetGABA-Cl
ModalitySmall molecule

Also known as Lotilaner Gel, 2.0%, lotilaner

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLED
Total Trials1
Total Enrollment155

FDA Designations

No designations recorded

Clinical trial landscape

Lotilaner, 2.0% · 2 trials · 2 indications

Phase 2 2
NCT07443202Study of Lotilaner Ophthalmic Gel in Patients With Ocular Rosacea (KORE)Ocular Rosacea
ENROLLING BY_INVITATION155 Analytics
NCT05838170Study of TP-04 in Participants With Papulopustular RosaceaPapulopustular Rosacea
COMPLETED37 Analytics
PHASE2ENROLLING BY_INVITATION
Study of Lotilaner Ophthalmic Gel in Patients With Ocular Rosacea (KORE)
Ocular RosaceaUnlock trial analytics
PHASE2COMPLETED
Study of TP-04 in Participants With Papulopustular Rosacea
Papulopustular RosaceaUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence of Treatment Emergent Adverse Events
Week 16

Number of patients with treatment related emergent adverse events (TEAEs)

The incidence of treatment emergent adverse events from baseline
Week 1 through Week 12

Incidence of local and systemic TEAEs while using Lotilaner Gel, 2.0% (TP-04) versus vehicle control gel from baseline

Changes from baseline in vital signs change in height in cm
Week 1 through Week 12

Changes from baseline in vital signs change in height in cm while using Lotilaner Gel, 2.0% (TP-04) versus vehicle control gel

Changes from baseline in vital signs change in weight in kg
Week 1 through Week 12

Changes from baseline in vital signs change in weight in kg while using Lotilaner Gel, 2.0% (TP-04) versus vehicle control gel

Changes from baseline in vtial signs change in systolic/diastolic blood pressure in mmHg
Week 1 through Week 12

Changes from baseline in vital signs change in systolic/diastolic blood pressure in mmHg while using Lotilaner Gel, 2.0% (TP-04) versus vehicle control gel

Changes from baseline in vital signs change in pulse in beats per minute
Week 1 through Week 12

Changes from baseline in vital signs change in pulse in beats per minute while using Lotilaner Gel, 2.0% (TP-04) versus vehicle control gel

Changes from baseline in vital signs change in respiratory rate in breaths per minute
Week 1 through Week 12

Changes from baseline in vital signs change in respiratory rate in breaths per minute while using Lotilaner Gel, 2.0% (TP-04) versus vehicle control gel

Changes from baseline in vital signs change in temperature in Celsius
Week 1 through Week 12

Changes from baseline in vital signs change in temperature in Celsius while using Lotilaner Gel, 2.0% (TP-04) versus vehicle control gel

Change from baseline in ECGs change in QRS interval in msec
Week 1 through Week 12

Changes from baseline in ECGs change in QRS interval in msec while using Lotilaner Gel, 2.0% (TP-04) versus vehicle control gel

Changes from baseline in ECGs change in mean ventricular rate (beats/min)
Week 1 through Week 12

Changes from baseline in ECGs change in mean ventricular rate (beats/min) while using Lotilaner Gel, 2.0% (TP-04) versus vehicle control gel

Changes in baseline in ECGs change in QTC interval in msec
Week 1 through Week 12

Changes from baseline in ECGs change in QTC interval in msec while using Lotilaner Gel, 2.0% (TP-04) versus vehicle control gel

Changes in clinical chemistry laboratory assessments from baseline
Week 1 through Week 12

Changes from baseline clinical chemistry laboratory values while using Lotilaner Gel, 2.0% (TP-04) versus vehicle control gel

Changes in hematology laboratory assessments from baseline
Week 1 through Week 12

Changes from baseline hematology laboratory values while using Lotilaner Gel, 2.0% (TP-04) versus vehicle control gel

Local tolerability assessment ((0=none, 3=severe): dryness, scaling, erythema, burning/stinging; itching)
Week 1 through Week 12

Evaluate local tolerability assessment ((0=none, 3=severe): dryness, scaling, erythema, burning/stinging; itching) of Lotilaner Gel, 2.0% (TP-04) versus vehicle control gel

Secondary Endpoints

Intraocular pressure
Week 16
Visual acuity
Week 16
Improvement in Investigator Global Assessment (IGA) score (0=clear; 4=severe)
Week 1 through Week 12
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Treatment armEXPERIMENTALlotilaner - high dose and low dose
Control armOTHERVehicle of lotilaner - high dose and low dose
Lotilaner Gel, 2.0% (TP-04)EXPERIMENTALParticipants will be randomized to a 2:1 ratio at baseline to apply Lotilaner Gel, 2.0% (TP-04) on the face BID for 12 weeks.
Vehicle-ControlledPLACEBO_COMPARATORParticipants will be randomized to a 2:1 ratio at baseline to apply vehicle control gel on the face BID for 12 weeks.

Interventions

NameTypeDescription
lotilanerDRUGlotilaner
VehicleDRUGVehicle of lotilaner
Lotilaner Gel, 2.0%DRUGLotilaner Gel, 2.0% (TP-04) is an aqueous gel formulation of lotilaner, a member of the isoxazoline family of compounds and parasiticide that selectively inhibits parasite-specific gamma-aminobutyric acid (GABA)-gated chloride channels (GABA-Cls).
Vehicle control gelOTHERAqueous gel
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites2

Inclusion Criteria: * 18 years of age or older at the time of consent. * Has moderate to severe ocular rosacea * Use of acceptable methods of contraception * Are willing to sign the informed consent form and is deemed capable of complying with the requirements of the study protocol Exclusion Crite...

Countries:United StatesCanada
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Frequently asked questions about Lotilaner, 2.0%

What is lotilaner, 2.0%?

Lotilaner, 2.0% is an investigational small molecule being developed by Tarsus Pharmaceuticals, Inc. (TARS) for rosacea. It is formulated as a gel and is in Phase 2 clinical development for ocular rosacea and papulopustular rosacea. It is not yet approved for any indication.

What is lotilaner, 2.0% used for?

Lotilaner, 2.0% is being studied for the treatment of ocular rosacea and papulopustular rosacea. These are inflammatory skin conditions affecting the eyes and face. The drug is investigational and has not been approved for any use.

How does lotilaner, 2.0% work?

Lotilaner, 2.0% targets GABA-Cl channels. By acting on these chloride channels, it is designed to interfere with the nervous system of mites that are associated with rosacea. This mechanism is being evaluated in clinical trials for ocular and papulopustular rosacea.

Who is developing lotilaner, 2.0%?

Lotilaner, 2.0% is being developed by Tarsus Pharmaceuticals, Inc., which trades on the Nasdaq under the ticker TARS. The company is conducting Phase 2 clinical trials for ocular rosacea and papulopustular rosacea.

What phase is lotilaner, 2.0% in?

Lotilaner, 2.0% is in Phase 2 clinical development. It is being evaluated in a Phase 2 trial for ocular rosacea and a completed Phase 2 trial for papulopustular rosacea. It is investigational and has not been approved by the FDA.

What clinical trials is lotilaner, 2.0% in?

Lotilaner, 2.0% is being studied in two Phase 2 trials. The KORE trial (NCT07443202) is evaluating lotilaner ophthalmic gel in patients with ocular rosacea and is currently enrolling by invitation. A completed Phase 2 trial (NCT05838170) studied TP-04 in participants with papulopustular rosacea.

Is lotilaner, 2.0% the same as lotilaner gel, 2.0%?

Yes, lotilaner, 2.0% is also known as lotilaner gel, 2.0%, or simply lotilaner. These names refer to the same investigational small molecule developed by Tarsus Pharmaceuticals for rosacea. The 2.0% indicates the concentration of the gel formulation.