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VP-102/ TO-208

Phase 3

Common Warts | Small molecule | Infectious Disease |Verrica Pharmaceuticals Inc.|Last Updated: Sep 3, 2026

Target and mechanism

ModalitySmall molecule

Also known as VP-102

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials2
Total Enrollment600

FDA Designations

No designations recorded

Clinical trial landscape

VP-102/ TO-208 · 2 trials · 4 indications

Phase 3 2
NCT07637734Cantharidin Application in Patients With Common Warts (Verruca Vulgaris) (COVE-3)Common Warts
RECRUITING300 Analytics
NCT07246590Cantharidin Application in Patients With Common Warts (Verruca Vulgaris) (COVE-2)Common Warts
RECRUITING300 Analytics
PHASE3RECRUITING
Cantharidin Application in Patients With Common Warts (Verruca Vulgaris) (COVE-3)
Common WartsUnlock trial analytics
PHASE3RECRUITING
Cantharidin Application in Patients With Common Warts (Verruca Vulgaris) (COVE-2)
Common WartsUnlock trial analytics

Study Endpoints

Primary Endpoints

Proportion of subjects achieving complete clearance of all treatable common warts (baseline and new) at the Day 84 (EOT) Visit.
Day 84 (0/+8 days)

To evaluate the efficacy of YCANTH (VP-102/TO-208) relative to Vehicle by assessing the proportion of subjects achieving complete clearance defined by complete resolution of all common warts as assessed visually by a Blinded Assessor of all treatable common warts, at the EOT Visit (Day 84).

Secondary Endpoints

Proportion of subjects achieving sustained complete clearance of all treatable common warts (baseline and new) from Treatment Visit 4 (Day 63) through EOT Visit (Day 84).
From Day 63 (+/- 4 days) to Day 84 (0/+8 days)
Proportion of subjects achieving sustained complete clearance of all treatable common warts (baseline and new) from Treatment Visit 3 (Day 42) through EOT Visit (Day 84).
From Day 42 (+/- 4 days) to Day 84 (0/+8 days)
Proportion of subjects achieving sustained complete clearance of all treatable common warts (baseline and new) from Treatment Visit 2 (Day 21) through EOT Visit (Day 84).
From Day 21 (+/- 4 days) to Day 84 (0/+8 days)
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
VP-102 (US) / TO-208 (Japan)EXPERIMENTALUS: Topical solution, which is a light violet to dark purple, slightly viscous liquid. Japan: Topical solution, which is clear to yellow, slightly viscous liquid. 0.7% (each mL contains 7 mg of cantharidin)/ glass ampule within an applicator. Each applicator contains 0.45 mL of 0.7% w/v cantharidin. Administered Topical/every 21 (± 4) days. All treatments will take place within a 75-day period.
Vehicle (US) / Vehicle (Japan)PLACEBO_COMPARATORUS: Topical solution, which is a light violet to dark purple, slightly viscous liquid. Japan: Topical solution, which is clear to yellow, slightly viscous liquid. No active drug/glass ampule within an applicator. Each applicator contains 0.45 mL without active cantharidin. Administered Topical/every 21 (± 4) days. All treatments will take place within a 75-day period.
VP-102EXPERIMENTALTopical solution, which is a light violet to dark purple, slightly viscous liquid. 0.7% (each mL contains 7 mg of cantharidin)/glass ampule within an applicator. Each applicator contains 0.45 mL of 0.7% w/v cantharidin. Administered Topical/every 21 (± 4) days. All treatments will take place within a 75-day period.
VehiclePLACEBO_COMPARATORTopical solution, which is a light violet to dark purple, slightly viscous liquid. No active drug/glass ampule within an applicator. Each applicator contains 0.45 mL of 0.7% w/v cantharidin. Administered Topical/every 21 (± 4) days. All treatments will take place within a 75-day period.

Interventions

NameTypeDescription
VP-102 (US) / TO-208 (Japan)COMBINATION_PRODUCTA single-use applicator and applied in sufficient quantity to cover the entirety of each treatable common wart, including approximately a 1 to 2 mm margin of surrounding, healthy skin. The contents of no more than 2 applicators may be applied at each treatment visit. Each applicator contains 0.45 mL of 0.7% w/v cantharidin. Occlusive tape (occlusive tape with similar properties should be used across all clinical sites) will be applied to warts that have been treated. Once applied, the occlusive tape should be gently rubbed to maximize adherence to the treated area.
Vehicle (US) / Vehicle (Japan)COMBINATION_PRODUCTVehicle is contained in a single-use applicator and applied in sufficient quantity to cover the entirety of each treatable common wart, including approximately a 1 to 2 mm margin of surrounding, healthy skin. The contents of no more than 2 applicators may be applied at each treatment visit. The Vehicle applicator contains the same excipient formulation as the VP-102/TO-208 applicator but does not contain the active pharmaceutical ingredient cantharidin. Occlusive tape (occlusive tape with similar properties should be used across all clinical sites) will be applied to warts that have been treated. Once applied, the occlusive tape should be gently rubbed to maximize adherence to the treated area.
VP-102COMBINATION_PRODUCTA single-use applicator and applied in sufficient quantity to cover the entirety of each treatable common wart, including approximately a 1 to 2 mm margin of surrounding, healthy skin. The contents of no more than 2 applicators may be applied at each treatment visit. Each applicator contains 0.45 mL of 0.7% w/v cantharidin. Occlusive tape (occlusive tape with similar properties should be used across all clinical sites) will be applied to warts that have been treated. Once applied, the occlusive tape should be gently rubbed to maximize adherence to the treated area.
VehicleCOMBINATION_PRODUCTVehicle is contained in a single-use applicator and applied in sufficient quantity to cover the entirety of each treatable common wart, including approximately a 1 to 2 mm margin of surrounding, healthy skin. The contents of no more than 2 applicators may be applied at each treatment visit. The Vehicle applicator contains the same excipient formulation as the VP-102 applicator but does not contain the active pharmaceutical ingredient cantharidin. Occlusive tape (occlusive tape with similar properties should be used across all clinical sites) will be applied to warts that have been treated. Once applied, the occlusive tape should be gently rubbed to maximize adherence to the treated area.
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Eligibility Criteria

Age Range2 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites20

Inclusion Criteria: Candidates will be included in the study if they: 1. Are male or female patients ≥ 2 years of age. 2. Are immunocompetent. 3. Have a minimum of 1 treatable common wart (verruca vulgaris) of any size and height: 1. Common warts are considered treatable if they are located an...

Countries:United StatesJapan
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Recent Changes (Last 90 Days)

LOWSep 3, 2026NCT07637734Status: NOT_YET_RECRUITING → RECRUITING
LOWSep 3, 2026NCT07637734Status: NOT_YET_RECRUITING → RECRUITING
LOWJun 10, 2026NCT07637734NEW_TRIAL: changed
LOWJun 10, 2026NCT07637734NEW_TRIAL: changed

Frequently asked questions about VP-102/ TO-208

What is VP-102 used for?

VP-102 is an investigational small molecule being developed by Verrica Pharmaceuticals Inc. (VRCA) for the treatment of molluscum contagiosum, condylomata acuminata (external genital warts), and common warts. It is currently in clinical development and has not been approved by the FDA.

What does VP-102 target?

VP-102 contains cantharidin, a topical agent that is applied directly to skin lesions. It is being studied for its effects on viral skin infections including molluscum contagiosum, external genital warts caused by human papillomavirus, and common warts.

Who makes VP-102?

VP-102 is developed by Verrica Pharmaceuticals Inc., a biopharmaceutical company traded on the Nasdaq under the ticker symbol VRCA. The drug is also known as TO-208 in Japan.

What phase is VP-102 in?

VP-102 has completed Phase 2 trials for molluscum contagiosum and external genital warts. It is currently being evaluated in two Phase 3 trials for common warts, which are actively recruiting participants in the United States and Japan.

What clinical trials is VP-102 in?

VP-102 has completed two Phase 2 trials: NCT03186378 in molluscum contagiosum and NCT03981822 in external genital warts. Two Phase 3 trials, NCT07246590 and NCT07637734, are currently recruiting for common warts, with a combined target enrollment of 600 participants.

Is VP-102 the same as TO-208?

Yes, VP-102 is also known as TO-208 in Japan. The drug is referred to as VP-102 in the United States and as VP-102/TO-208 internationally. Both names refer to the same cantharidin-based topical treatment.