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Study Evaluating the Safety and Efficacy of PTX-022 (QTORIN Sirolimus) in the Treatment of Microcystic Lymphatic Malformations

A Multicenter, Phase 2, Open-Label Study Evaluating The Safety And Efficacy of Sirolimus 3.9% Topical Gel (PTX-022) In The Treatment of Microcystic Lymphatic Malformations

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05050149
Enrollment
12
Registered
2021-09-20
Start date
2022-01-13
Completion date
2022-12-15
Last updated
2025-01-17

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Microcystic Lymphatic Malformation

Brief summary

This study evaluates the safety and efficacy of PTX-022 (sirolimus) Topical Gel 3.9% w/w in the treatment of Microcystic Lymphatic Malformations. The participant will receive 3 months of PTX-022 treatment by the end of the study.

Interventions

Safety and Efficacy of PTX-022 in the Treatment of Microcystic Lymphatic Malformations

Sponsors

Palvella Therapeutics, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

This is an open-label, baseline-controlled study

Eligibility

Sex/Gender
ALL
Age
6 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Participants must be 6 years or older * Diagnosed with Microcystic Lymphatic Malformations * Able and willing to comply with all protocol-required activities * Willing and able to provide written informed consent

Exclusion criteria

* Any significant concurrent condition that could adversely affect participation. * Any history of allergy or hypersensitivity to sirolimus, or sirolimus-like medications or to PTX-022 * Patient's deemed by the investigator as unwilling or unable to remain compliant with all tests and procedures, including adherence to study drug administration and other protocol-required activities.

Design outcomes

Primary

MeasureTime frame
Incidence of Treatment-Emergent Adverse Events4 months

Countries

United States

Participant flow

Participants by arm

ArmCount
Experimental: PTX-022
PTX-022 QTORIN PTX-022: Safety and Efficacy of PTX-022 in the Treatment of Microcystic Lymphatic Malformations
12
Total12

Baseline characteristics

CharacteristicExperimental: PTX-022
Age, Categorical
<=18 years
5 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
7 Participants
Age, Continuous27.3 years
STANDARD_DEVIATION 13.56
Ethnicity (NIH/OMB)
Hispanic or Latino
2 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
10 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race/Ethnicity, Customized
Race
American Indian or Alaska Native
0 Participants
Race/Ethnicity, Customized
Race
Asian
1 Participants
Race/Ethnicity, Customized
Race
Black or African American
2 Participants
Race/Ethnicity, Customized
Race
Native Hawaiian or Other Pacific Islander
0 Participants
Race/Ethnicity, Customized
Race
Other
1 Participants
Race/Ethnicity, Customized
Race
White
8 Participants
Region of Enrollment
United States
12 participants
Sex: Female, Male
Female
7 Participants
Sex: Female, Male
Male
5 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 12
other
Total, other adverse events
9 / 12
serious
Total, serious adverse events
0 / 12

Outcome results

Primary

Incidence of Treatment-Emergent Adverse Events

Time frame: 4 months

ArmMeasureGroupValue (NUMBER)
Experimental: PTX-022Incidence of Treatment-Emergent Adverse EventsSubjects with TEAEs9 participants
Experimental: PTX-022Incidence of Treatment-Emergent Adverse EventsGastrointestinal Disorders2 participants
Experimental: PTX-022Incidence of Treatment-Emergent Adverse EventsGeneral Disorders and Administration Site Conditions6 participants
Experimental: PTX-022Incidence of Treatment-Emergent Adverse EventsInfections and Infestations2 participants
Experimental: PTX-022Incidence of Treatment-Emergent Adverse EventsInvestigations1 participants
Experimental: PTX-022Incidence of Treatment-Emergent Adverse EventsMusculoskeletal and Connective tissue Disorders1 participants
Experimental: PTX-022Incidence of Treatment-Emergent Adverse EventsNervous System Disorders2 participants
Experimental: PTX-022Incidence of Treatment-Emergent Adverse EventsRenal and Urinary Disorders1 participants
Experimental: PTX-022Incidence of Treatment-Emergent Adverse EventsSkin and Subcutaneous Tissue Disorders4 participants

Source: ClinicalTrials.gov · Data processed: Feb 14, 2026