ClinicalTrials.gg
TerminatedNCT04155190Updated Jul 21, 2026Results posted

A Study of Patidegib Topical Gel, 2%, for the Reduction of Disease Burden of Persistently Developing Basal Cell Carcinomas in Patients With Non-Gorlin High Frequency BCC

A Phase 2 interventional study of Patidegib Topical Gel, 2% and Patidegib Topical Gel, Vehicle in Recurrent Basal Cell Carcinoma, sponsored by Sol-Gel Technologies, Ltd.. Terminated at 14 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-07-21.

Sponsored by Sol-Gel Technologies, Ltd. · Phase 2, Interventional, and Treatment

Why this study was terminated
Terminated early due to low blinded event rate
Phase
Phase 2
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This is a multicenter, randomized, double-blind, stratified, vehicle-controlled study of the efficacy and safety of Patidegib Topical Gel, 2%, applied topically twice daily to the face of adult participants with non-Gorlin HF-BCC (high-frequency basal cell carcinoma). Participants will be randomized (1:1) to receive either Patidegib Topical Gel, 2%, or Vehicle for 9 months. Randomization will be stratified by gender. The primary endpoint is the number of nSEB (surgically eligible basal cell carcinoma) that develop on the face over the 9 month period. The primary end point will be assessed by imaging and tracking of BCCs consistently throughout the study in order to identify nSEBs.

02

Conditions studied

  • Recurrent Basal Cell Carcinoma

Keywords

  • High Frequency Basal Cell Carcinoma
  • non-gorlin
  • HF-BCC
  • Bazex-Dupré-Christol Syndrome
  • Rombo Syndrome
  • Oley Syndrome
  • Xeroderma Pigmentosum (XP) Syndrome
  • BCC
  • SEB
  • Hedgehog inhibitor
  • Basal Cell Nevus Syndrome
  • Basal Cell Carcinoma
  • Surgically Eligible Basal Cell Carcinoma
  • patidegib
  • HFBCC
  • HHI
03

In context

Carcinoma, Basal Cell

389 studies on the registry are indexed under Carcinoma, Basal Cell; 69 are open to participants now.

This study's enrollment of 50 is close to the median of 50 across 272 interventional studies indexed under Carcinoma, Basal Cell.

Browse Carcinoma, Basal Cell studies →

Lead sponsor

Sol-Gel Technologies, Ltd. is the lead sponsor of 15 studies on the registry; none are open to participants now.

Of its 12 completed or terminated interventional studies of FDA-regulated products, 8 (67%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. The subject must have had at least 10 (with at least 3 on the face) clinically typical BCCs present within 24 months prior to Screening and Randomization (Baseline/Day 1). Additionally, the subject must have at least 2 BCCs with longest diameter \<5 mm present on the face prior to Screening and Randomization (Baseline/Day 1).
  2. The subject must be willing to abstain from application of a non-study topical medication (prescription or over the counter) to facial skin for the duration of the trial except as prescribed by the Investigator.

Exclusion criteria

Exclusion Criteria:

  1. The subject has been previously diagnosed with Gorlin syndrome
  2. On medical history, family history or clinical examination there is a suspicion that the patient has Gorlin syndrome.
  3. Patients with a family history of medulloblastoma
  4. The subject has used topical treatment to the face or systemic therapies that might interfere with the evaluation of the study IP.
  5. The subject has uncontrolled systemic disease.
  6. The subject has been treated for invasive cancer within the past 5 years excluding non-melanoma skin cancer, Stage I cervical cancer, ductal carcinoma in situ of the breast, or chronic lymphocytic leukemia (CLL) Stage 0.
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
50 participants (actual)

Study arms

  • Experimental
    Patidegib Topical Gel, 2%

    Participants will be randomized (1:1) to receive Patidegib Topical Gel, 2% for 9 months

    Drug: Patidegib Topical Gel, 2%

  • Active comparator
    Patidegib Topical Gel, Vehicle

    Participants will be randomized (1:1) to receive Patidegib Topical Gel, Vehicle for 9 months

    Drug: Patidegib Topical Gel, Vehicle

Interventions

  • Patidegib Topical Gel, 2%

    Also known as: IP

  • DrugPatidegib Topical Gel, Vehicle

    Patidegib Topical Gel, Vehicle

    Also known as: IP, Vehicle

06

What researchers measure

Primary outcomes

  1. Number of Participants With New Surgically Eligible Basal Cell Carcinomas (nSEBs)

    Time frame: Up to 9 months

Secondary outcomes

  1. Number of Participants With Treatment-emergent Adverse Events (TEAEs)

    TEAEs were defined as AEs that started on or after the first dose of study drug. A summary of serious and non-serious AEs regardless of causality is located in 'Reported Adverse Events module'.

    Time frame: Up to 9 months

07

Results

Posted Jul 21, 2026
Limitations and caveats
Study terminated early by previous responsible party (PellePharm Inc.) due to low blinded event rate. Data presented reflect data collected prior to study termination by PellePharm, and are reported by current responsible party, Sol-Gel. Participant-level data collected and reported only in aggregate for overall study, rather than by treatment arm for participant flow, outcome measures, mortality, and AEs. Current Sponsor prepared a Note to File for SAP to document how data were collected.

Participant flow

The study was terminated early by the previous responsible party (PellePharm Inc.) on 15-Jun-2021 due to low blinded event rate. Data presented in this results posting reflect the data collected prior to study termination by the previous responsible party, PellePharm Inc., and are reported by the current responsible party, Sol-Gel Technologies Ltd.

Participant flow — Overall Study
MilestoneOverall Study
Started50
Intent to treat set47
Received at least 1 dose of patidegib or vehicle47
Completed20
Not completed30
Withdrew: Sponsor decision24
Withdrew: Other than specified1
Withdrew: Withdrawal by subject2
Withdrew: Randomized, not treated3

Outcome measures

SecondaryNumber of Participants With Treatment-emergent Adverse Events (TEAEs)

TEAEs were defined as AEs that started on or after the first dose of study drug. A summary of serious and non-serious AEs regardless of causality is located in 'Reported Adverse Events module'.

Time frame:
Up to 9 months
Reported as:
Count of participants · Participants
Number of Participants With Treatment-emergent Adverse Events (TEAEs)
ParticipantsOverall Study
Number of Participants With Treatment-emergent Adverse Events (TEAEs)18
PrimaryNumber of Participants With New Surgically Eligible Basal Cell Carcinomas (nSEBs)
Time frame:
Up to 9 months

No measurements were reported for this outcome.

Adverse events

Collected over Up to 9 months. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Overall Study0/47 (0%)2/47 (4.3%)0/47 (0%)
Most frequent serious events
Most frequent serious events
EventOverall Study
Respiratory syncytial virus infectionInfections and infestations1/47
Myocardial InfarctionCardiac disorders1/47

Baseline characteristics

Intent to treat set included all participants who received at least 1 dose of study drug.

Age, Categorical
Age, Categorical(Participants)Patidegib Topical Gel, 2%VehicleTotal
<=18 years000
Between 18 and 65 years7411
>=65 years162036
Sex: Female, Male
Sex: Female, Male(Participants)Patidegib Topical Gel, 2%VehicleTotal
Female7815
Male161632
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Patidegib Topical Gel, 2%VehicleTotal
Hispanic or Latino000
Not Hispanic or Latino232447
Unknown or Not Reported000
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Patidegib Topical Gel, 2%VehicleTotal
American Indian or Alaska Native000
Asian000
Native Hawaiian or Other Pacific Islander000
Black or African American000
White232447
More than one race000
Unknown or Not Reported000
08

Study locations

14 sites
  • Axiom Research, LLC
    Apple Valley, California 92307, United States
  • Axiom Research, LLC
    Colton, California 92324, United States
  • Center for Dermatology Clinical Research, Inc.
    Fremont, California 94538, United States
  • Dermatology Research Associates
    Los Angeles, California 90045, United States
  • The Dermatology Center of Newport
    Newport Beach, California 92660, United States
  • Palm Beach Dermatology Research
    Delray Beach, Florida 33484, United States
  • Leavitt Medical Associates of Florida
    Ormond Beach, Florida 32174, United States
  • PellePharm Investigative Site
    Saint Augustine, Florida 32080, United States
  • The Indiana Clinical Trials Center
    Plainfield, Indiana 46168, United States
  • Grekin Skin Institute
    Warren, Michigan 48088, United States
  • PellePharm Investigative Site
    Henderson, Nevada 89052, United States
  • Skin Laser and Surgery Specialists of NY&NJ
    Hackensack, New Jersey 07601, United States
  • Duke University Medical Center
    Durham, North Carolina 27710, United States
  • University of Utah
    Murray, Utah 84107, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: Undecided

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 21, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04155190
Lead sponsor
Sol-Gel Technologies, Ltd.
Responsible party
Sponsor
First posted
Nov 7, 2019
Start date
Dec 20, 2019
Primary completion
Apr 23, 2021
Completion
Apr 23, 2021
Results posted
Jul 21, 2026
Last update
Jul 21, 2026

Study contacts

VP, Clinical Operations
study director · PellePharm, Inc.

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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