Evaluating the Safety and Efficacy of Topical Sirolimus 0.2% to Treat Acanthosis Nigricans

November 21, 2025 updated by: Narrows Institute for Biomedical Research
The purpose of this study is to demonstrate the safety and efficacy of Sirolimus 0.2% topical gel for patients with Acanthosis Nigricans

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
5

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • New York
      • Brooklyn, New York, United States, 11209
        • New York Harbor VA Brooklyn Campus

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Men and women ages 18+.
  • Clinical diagnosis of acanthosis nigricans.
  • Available and willing to comply with study instructions and attend all study visits.
  • Able and willing to provide written and verbal informed consent.

Exclusion Criteria:

  • Subject has any skin pathology or condition that could interfere with the evaluation of the test products or requires the use of interfering topical or systemic therapy.
  • Subject has any condition which, in the investigator's opinion, would make it unsafe for the subject to participate in this research study.
  • Pregnant, lactating, or is planning to become pregnant during the study.
  • Subject is currently enrolled in an investigational drug or device study.
  • Subject has received an investigational drug or has been treated with an investigational device within 30 days prior to the initiation of treatment (baseline).
  • Subject is unable to communicate or cooperate with the investigator due to language problems, poor mental development, or impaired cerebral function.
  • Subject has known hypersensitivity or previous allergic reaction to any of the active or inactive components of the test articles.
  • Subject has the need or plans to be exposed to artificial tanning devices or excessive sunlight during the trial.
  • Erosions, ulcers, or other skin lesions within or closely neighboring the AN lesion application site.
  • Hypersensitivity reactions such as anaphylaxis or angioedema to sirolimus or any component of sirolimus 0.2% topical gel (HYFTOR).
  • Dyslipidemia (cholesterol level >300mg/dL or >7.75mmol/L, triglyceride level >300 mg/dL or >3.42 mmol/L).
  • Subject cannot agree to take appropriate contraception for the duration of the study and 12 weeks after the final dose.
  • Exclusions apply to those who have used the following topical treatments to treat AN: retinoids, hydroquinones, corticosteroids, or other depigmenting agents within one month prior to the study, or oral retinoids within six months prior to the study, or medications with mammalian target of rapamycin(mTOR) inhibitory action within 12 months prior to the first visit.
  • Subjects with a malignant tumor

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Patients with Acanthosis Nigricans
Patients with the diagnosis of acanthosis nigricans
Drug: Sirolimus 0.2%
sirolimus 0.2% gel
Other Names:
  • HYFTOR

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Improvement in hyperpigmentation in acanthosis nigricans lesions
Time Frame: From enrollment to end of treatment at 12 weeks
Improvement in the Melanin(M) index from baseline to 12 weeks of treatment. The M index is positively correlated with a darker skin color and ranges from 0-999.
From enrollment to end of treatment at 12 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Improvement in hyperpigmentation and skin texture in acanthosis nigricans lesions
Time Frame: Baseline to weeks 4, 8, and 12
Improvement in the ANSC (Acanthosis Nigricans Scoring Chart) from baseline (Day 0) to Visit 2 (Week 4), Visit 3 (Week 8) and Visit 4 (Week 12). ANSC is scored on a scale of 1 to 8 for skin color and 1 to 6 for skin texture. These scores are then combined for a total ANSC score ranging from 2 to 14.
Baseline to weeks 4, 8, and 12
Improvement in the Investigators Global Evaluation (IGE) scale and Patient Global Evaluation (PGE) scale
Time Frame: Baseline to weeks 4, 8, and 12
IGE and PGE are both scored on a 0 to 6 scale: 0 signifies "clear," 1 indicates "almost clear or > 90% improvement," 2 represents "marked improvement or 75% improvement," 3 denotes "moderate improvement or 50% improvement," 4 signifies "mild improvement or 25% improvement," 5 indicates "no change," and 6 means "worsening."
Baseline to weeks 4, 8, and 12
Improvement in the Dermatology Quality of Life (DLQI) scale
Time Frame: From enrollment to end of treatment at 12 weeks
The DLQI ranges from 0 to 30 with higher scores denoting worse quality of life.
From enrollment to end of treatment at 12 weeks
Assessment of patient satisfaction using the Treatment Satisfaction Questionnaire for Medication (TSQM)
Time Frame: Week 12
Assessment of patient satisfaction using the treatment satisfaction questionnaire for medication
Week 12
Digital photography with a TwinFlash RL Clinical Camera to depict clinical improvement of acanthosis nigricans.
Time Frame: Baseline to weeks 4, 8, and 12
Digital photography with a TwinFlash RL Clinical Camera to depict clinical improvement of AN
Baseline to weeks 4, 8, and 12

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Narrows Institute for Biomedical Research

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Nobelpharma

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Jared Jagdeo, MD MS, SUNY Downstate Health Sciences University Department of Dermatology

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 1, 2025

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
July 8, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 18, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
April 15, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 15, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
April 23, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 28, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 21, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 1814310

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

IPD Plan Description

undecided whether IPD will be shared.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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