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Trichostatin A

Phase 2

Onychomycosis of Toenail | Small molecule | Dermatology |Vanda Pharmaceuticals Inc.|Last Updated: Mar 16, 2026

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment50

FDA Designations

No designations recorded

Clinical trial landscape

Trichostatin A · 2 trials · 2 indications

Phase 2 1Phase 1 1
NCT07065773Safety, Tolerability and Efficacy of Trichostatin A in Patients With Mild to Severe OnychomycosisOnychomycosis of Toenail
ACTIVE NOT_RECRUITING50 Analytics
PHASE2ACTIVE NOT_RECRUITING
Safety, Tolerability and Efficacy of Trichostatin A in Patients With Mild to Severe Onychomycosis
Onychomycosis of ToenailUnlock trial analytics

Study Endpoints

Primary Endpoints

Safety and Tolerability
24 weeks

Subjects will be asked about AEs weekly during the evaluation phase and at every follow-up visit; descriptions of AEs will include, at a minimum: date of onset, date ended, severity, seriousness, relationship to the study drug, and outcome.

Safety and tolerability of trichostatin A measured by spontaneous reporting of adverse events (AEs)
Up to 24 months

Measured by spontaneous reporting of adverse events (AEs)

Dose-limiting toxicities (DLTs) and maximum tolerated dose (MTD) of trichostatin A
Up to 24 months
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Trichostatin AEXPERIMENTAL -

Interventions

NameTypeDescription
Trichostatin ADRUGTopical Study Drug
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Eligibility Criteria

Age Range18 Years to 75 Years
SexALL
Healthy VolunteersNo
Study Sites5

Inclusion Criteria: * Willingness to provide signed and dated written voluntary informed consent. * Adults with diagnosis of mild-to-severe DLSO/DSO affecting at least one great toenail. * Positive microscopic examination with KOH for dermatophyte hyphae. * Positive dermatophyte culture or mixed de...

Countries:United StatesPoland
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Frequently asked questions about Trichostatin A

What is Trichostatin A used for?

Trichostatin A is an investigational small molecule being studied for the treatment of onychomycosis of the toenail and relapsed or refractory hematologic malignancies. It is currently in clinical development for these conditions.

Who is developing Trichostatin A?

Trichostatin A is being developed by Vanda Pharmaceuticals Inc., a company traded on the NASDAQ under the ticker symbol VNDA.

What phase is Trichostatin A in?

Trichostatin A is in Phase 2 clinical development for onychomycosis of the toenail. It is also being studied in a Phase 1 trial for relapsed or refractory hematologic malignancies. The drug is investigational and has not been approved by regulatory authorities.

What clinical trials is Trichostatin A in?

Trichostatin A is being evaluated in two clinical trials. NCT07065773 is a Phase 2 study in patients with mild to severe onychomycosis, enrolling 50 participants in the United States. NCT03838926 is a Phase 1 tolerability study in subjects with relapsed or refractory hematologic malignancies, enrolling 42 participants in the United States and Poland.

Is Trichostatin A the same as any other drug?

Trichostatin A is a distinct investigational compound. No alternative names for this drug have been disclosed in the clinical trial records.