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PTX-022

Phase 3

Pachyonychia Congenita | Small molecule | Rare Disease |Palvella Therapeutics, Inc.|Last Updated: Apr 27, 2026

Target and mechanism

Molecular targetmTOR
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials3
Total Enrollment154

FDA Designations

No designations recorded

Clinical trial landscape

PTX-022 · 6 trials · 4 indications

Phase 3 2Phase 2 4
NCT05643872A Study Evaluating the Safety and Pharmacokinetics of QTORIN Rapamycin 3.9% Anhydrous Gel in the Treatment of Adults With Pachyonychia CongenitaPachyonychia Congenita
RECRUITING45 Analytics
NCT04520750VALO-2: Study Evaluating the Safety and Efficacy of PTX022 in the Treatment of Adults With Pachyonychia CongenitaPachyonychia Congenita
COMPLETED36 Analytics
PHASE3RECRUITING
A Study Evaluating the Safety and Pharmacokinetics of QTORIN Rapamycin 3.9% Anhydrous Gel in the Treatment of Adults With Pachyonychia Congenita
Pachyonychia CongenitaUnlock trial analytics
PHASE3COMPLETED
VALO-2: Study Evaluating the Safety and Efficacy of PTX022 in the Treatment of Adults With Pachyonychia Congenita
Pachyonychia CongenitaUnlock trial analytics

Study Endpoints

Primary Endpoints

Treatment emergent adverse events
6 months
Incidence of Treatment-Emergent Adverse Events
18 Months
Changes in vital sign measurements from baseline
18 months
Changes in weight measurements from baseline
18 months
Changes in clinical laboratory measurements from baseline
18 months
Overall Angiokeratoma Investigator Global Assessment (AK-IGA)
3 months
Overall Patient Global Impression of Change (PGI-C)
3 months
Number of new biopsy confirmed BCCs that develop on the face compared between the active and vehicle treatment arms
Month 6
Incidence of dermatological, treatment emergent adverse events after treatment with active
Month 6
Patient Global Assessment of Activities Scale
6 months

Secondary Endpoints

Pharmacokinetic parameters
Prior to dose, 12 hours and 24 hours
Patient Global Assessment of Activities Scale
18 Months
Pain at its worst as assessed by NRS
18 months
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
PTX-022EXPERIMENTAL -
Open label treatment armEXPERIMENTALPTX-022 QTORIN
Open labelEXPERIMENTAL -
Experimental: PTX-022EXPERIMENTALPTX-022 QTORIN
ActiveEXPERIMENTAL -
VehiclePLACEBO_COMPARATOR -
Open label periodEXPERIMENTAL -
Randomized period - Dosing APLACEBO_COMPARATOR -
Randomized period - Dosing BEXPERIMENTAL -
Randomized period - Dosing CEXPERIMENTAL -

Interventions

NameTypeDescription
PTX-022DRUGQTORIN rapamycin 3.9% anhydrous gel
Vehicle comparatorDRUGVehicle comparator topical gel
PlaceboDRUGPlacebo topical
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Eligibility Criteria

Age Range16 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites1

Key Inclusion Criteria: * Completed the PALV-05 (VAPAUS) study * Agree to contraceptive use Key Exclusion Criteria: * Females who are pregnant or breastfeeding * Concomitant use of sirolimus or any sirolimus-containing medications (systemic or topical) * Any significant concurrent condition that ...

Countries:United StatesUnited Kingdom
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Frequently asked questions about PTX-022

What is PTX-022 used for?

PTX-022 is an investigational topical sirolimus gel being studied for angiokeratomas, basal cell carcinomas (BCCs) in Gorlin syndrome patients, microcystic lymphatic malformation, and pachyonychia congenita. It is a small molecule mTOR inhibitor developed by Palvella Therapeutics, Inc. (PVLA).

How does PTX-022 work?

PTX-022 targets mTOR, a key regulator of cell growth and proliferation. By inhibiting mTOR, the drug aims to reduce abnormal cell growth associated with the conditions it is being studied for, including angiokeratomas and basal cell carcinomas in Gorlin syndrome patients.

Who makes PTX-022?

PTX-022 is being developed by Palvella Therapeutics, Inc., a biopharmaceutical company traded under the ticker PVLA. The company is conducting clinical trials to evaluate the drug's safety and efficacy in multiple rare dermatologic conditions.

What phase is PTX-022 in?

PTX-022 is in Phase 2 clinical development. It is an investigational drug and has not been approved by the FDA. Clinical trials are ongoing or completed for several indications, including a Phase 2 study for angiokeratomas that is currently recruiting participants.

What clinical trials is PTX-022 in?

PTX-022 has three clinical trials listed on ClinicalTrials.gov. NCT07552077 is a recruiting Phase 2 study for angiokeratomas. NCT05643872 is a recruiting Phase 3 study for pachyonychia congenita. NCT05050149 and NCT04893486 are completed Phase 2 studies for microcystic lymphatic malformation and BCCs in Gorlin syndrome patients, respectively.

Is PTX-022 the same as QTORIN sirolimus?

PTX-022 is also known as QTORIN sirolimus or QTORIN rapamycin. Clinical trial titles refer to it as QTORIN Rapamycin 3.9% Anhydrous Gel and QTORIN Sirolimus, indicating these names refer to the same investigational drug.