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Dose-Ranging Efficacy and Safety Study of Topical Rapamycin Cream for Facial Angiofibroma Associated With Tuberous Sclerosis Complex

A Phase 2/3, Multi-Center, Double-Blind, Placebo-Controlled, Randomized, Parallel-Group, Dose-Response Comparison of the Efficacy and Safety of a Topical Rapamycin Cream for the Treatment of Facial Angiofibromas (FA) Associated With Tuberous Sclerosis Complex (TSC) in Patients 6 Years of Age and Over

Status
Completed
Phases
Phase 2Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03826628
Enrollment
107
Registered
2019-02-01
Start date
2019-07-28
Completion date
2022-09-01
Last updated
2023-09-08

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

Conditions

Facial Angiofibroma, Tuberous Sclerosis

Brief summary

The study aims to compare the safety and efficacy of two different strengths of Rapamycin cream, topical and placebo over 26 weeks in the treatment of facial angiofibroma (FA) associated with Tuberous Sclerosis Complex (TSC).

Detailed description

Topical rapamycin has previously been used to treat FA associated with TSC, reducing erythema, papule size, while flattening lesions and improving skin texture. Topical rapamycin has been reported to be well tolerated. The efficacy and safety of a topical rapamycin cream at two strengths (0.5% and 1.0%) will be assessed during a 26 week double-blind treatment phase with assessments made at clinical visits at baseline, 2, 8, 14, 20 and 26 weeks, and at follow-up (4 weeks after the last dose of study drug).

Interventions

DRUGrapamycin

Apply to the affected area once a day, approximately half an hour before retiring for bed in the evening, for 26 weeks

DRUGplacebo

Apply to the affected area once a day, approximately half an hour before retiring for bed in the evening, for 26 weeks

Sponsors

Dermatology Specialties Limited Partnership
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
6 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

1. Male and female patients aged ≥ 6 years and ≤ 65 years on the day informed consent is obtained 2. Patients diagnosed with TSC based on the clinical diagnostic criteria of International Tuberous Sclerosis Complex Consensus Conference 2012 and presenting visible facial angiofibroma 3. An FA severity score of 2 or 3 on the IGA scale 4. Patients or their legal representatives capable of understanding the explanation of the clinical trial and who give written informed consent for participation 5. Patients or their legal representatives able to maintain patient diaries following the instructions of the investigator or sub-investigator

Exclusion criteria

1. Patients who cannot carry out the treatment plan or follow-up assessment 2. Patients with serious skin lesions such as erosions or ulcers 3. Patients with known hypersensitivity to any component of the study product 4. Patients who have received rapamycin/sirolimus, everolimus, or temsirolimus within 3 months of enrolment 5. Patients who received laser therapy or surgical therapy within 6 months prior to trial enrolment 6. Patients who participated in any other clinical trial within 3 months prior to the day of enrolment 7. Patients judged unsuitable for this clinical trial by the investigator or sub-investigator 8. Pregnant or lactating females 9. Sexually active females of childbearing potential not using adequate contraception and sexually active males not using adequate contraception 10. Patients with immune dysfunction or receiving any form of immunosuppression 11. Patients with severe FA, with a score of 4 on the IGA scale 12. Patients with an FA severity score of less than 2 on the IGA scale

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants Obtaining Successful TreatmentAfter 26 weeks treatmentSuccess on the Investigator Global Assessment (IGA) scale is defined as clear or almost clear with an improvement of at least two grades from baseline. IGA scores range from 0-4: 0=Clear 1. Almost Clear 2. Mild 3. Moderate 4. Severe

Secondary

MeasureTime frameDescription
Change From Baseline in Investigator's Global AssessmentAt baseline and after 26 weeks treatmentThe change in grading on the Investigator's Global Assessment (IGA) scale from baseline. IGA scores range from 0-4: 0=Clear 1. Almost Clear 2. Mild 3. Moderate 4. Severe
Change From Baseline in Facial Angiofibroma Severity Index (FASI)At baseline and after 26 weeks treatmentThe change in grading on the Facial Angiofibroma Severity Index (FASI) from baseline. FASI grades lesions according to their erythema, size and extent by summing the scores of each category. The final FASI scores range from (mild) 2-9 (severe). Erythema Skin color 0 Light Red 1 Red 2 Dark Red/purple 3 Size None 0 Small (\< 5mm) 1 Large (\> 5mm) 2 Confluent 3 Extension \<50 % cheek surface 2 \>50% cheek surface 3
Time to Treatment SuccessFrom first dose to 26 weeks (± 2 weeks)The time elapsed from the first dose to the time of treatment success, according to the Investigator's Global Assessment (IGA) scale. The total time of treatment was 26 weeks, although Covid-19 visit delays led to an extension of up to 2 weeks (28 weeks total) for some patients. Success on the Investigator Global Assessment (IGA) scale is defined as clear or almost clear with an improvement of at least two grades from baseline. IGA scores range from 0-4: 0=Clear 1. Almost Clear 2. Mild 3. Moderate 4. Severe
Objective (Clinician) Percentage Change Rating ScaleAfter 26 weeks treatmentPercentage improvement in facial angiofibroma since beginning treatment, as assessed by the clinician. A large value indicates most improvement to facial angiofibroma (minimum=0, maximum=100). This was a single assessment time-point, where clinicians estimated the percentage change in the facial angiofibroma lesion appearance from their perspective since baseline.
Categorical Change in Facial AngiofibromaAfter 26 weeks treatmentChange in facial angiofibroma since beginning treatment on a 5-point scale, as assessed by the participant or parent/caregiver. This was a single assessment time-point, where the participant or parent/caregiver evaluated the change in the facial angiofibroma lesion appearance from their perspective since baseline.
Subjective (Participant or Parent/Caregiver) Percentage Change Rating ScaleAfter 26 weeks treatmentPercentage change in facial angiofibroma since beginning treatment, as assessed by the participant or parent/caregiver. A large value indicates most improvement to facial angiofibroma (minimum=0, maximum=100). This was a single assessment time-point, where the participant or parent/caregiver estimated the percentage change in the facial angiofibroma lesion appearance from their perspective since baseline.

Countries

Australia, Czechia, Hungary, New Zealand, Serbia, Slovakia, Spain, Taiwan, United States

Participant flow

Participants by arm

ArmCount
0.5% Rapamycin Cream, Topical
Rapamycin cream topical, 0.5% w/w, applied once daily before bed on affected area for 26 weeks rapamycin: Apply to the affected area once a day, approximately half an hour before retiring for bed in the evening, for 26 weeks
36
1.0% Rapamycin Cream, Topical
Rapamycin cream topical, 1.0% w/w, applied once daily before bed on affected area for 26 weeks rapamycin: Apply to the affected area once a day, approximately half an hour before retiring for bed in the evening, for 26 weeks
33
Placebo
Placebo cream topical, applied once daily before bed on affected area for 26 weeks placebo: Apply to the affected area once a day, approximately half an hour before retiring for bed in the evening, for 26 weeks
38
Total107

Baseline characteristics

Characteristic1.0% Rapamycin Cream, TopicalPlacebo0.5% Rapamycin Cream, TopicalTotal
Age, Continuous25.5 years
STANDARD_DEVIATION 15
26.3 years
STANDARD_DEVIATION 13.8
27.8 years
STANDARD_DEVIATION 15
26.6 years
STANDARD_DEVIATION 14.5
Age, Customized
Age group
12-17 years
8 Participants7 Participants5 Participants20 Participants
Age, Customized
Age group
18-65 years
21 Participants25 Participants25 Participants71 Participants
Age, Customized
Age group
6-11 years
4 Participants6 Participants6 Participants16 Participants
BMI24.8 kg/m^2
STANDARD_DEVIATION 6.6
25.4 kg/m^2
STANDARD_DEVIATION 6.4
24.7 kg/m^2
STANDARD_DEVIATION 5.6
25 kg/m^2
STANDARD_DEVIATION 6.2
Ethnicity (NIH/OMB)
Hispanic or Latino
4 Participants4 Participants5 Participants13 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
29 Participants34 Participants31 Participants94 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants0 Participants
Facial Angiofibroma Severity Index (FASI)
4
5 Participants6 Participants7 Participants18 Participants
Facial Angiofibroma Severity Index (FASI)
5
13 Participants16 Participants12 Participants41 Participants
Facial Angiofibroma Severity Index (FASI)
6
6 Participants8 Participants8 Participants22 Participants
Facial Angiofibroma Severity Index (FASI)
7
5 Participants5 Participants6 Participants16 Participants
Facial Angiofibroma Severity Index (FASI)
8
3 Participants3 Participants2 Participants8 Participants
Facial Angiofibroma Severity Index (FASI)
9
1 Participants0 Participants1 Participants2 Participants
Height165 centimeters
STANDARD_DEVIATION 16
161 centimeters
STANDARD_DEVIATION 17
164 centimeters
STANDARD_DEVIATION 17
163 centimeters
STANDARD_DEVIATION 17
Investigator's Global Assessment (IGA)
2 - Mild
16 Participants19 Participants13 Participants48 Participants
Investigator's Global Assessment (IGA)
3 - Moderate
17 Participants19 Participants23 Participants59 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants1 Participants1 Participants
Race (NIH/OMB)
Asian
5 Participants6 Participants7 Participants18 Participants
Race (NIH/OMB)
Black or African American
1 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
1 Participants0 Participants0 Participants1 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants2 Participants0 Participants2 Participants
Race (NIH/OMB)
White
26 Participants30 Participants28 Participants84 Participants
Rapamycin concentration
Above limit of detection
0 Participants0 Participants0 Participants0 Participants
Rapamycin concentration
Below limit of detection
33 Participants38 Participants36 Participants107 Participants
Sex: Female, Male
Female
14 Participants23 Participants21 Participants58 Participants
Sex: Female, Male
Male
19 Participants15 Participants15 Participants49 Participants
Study Site
Site #00 - ACRI Johns Hopkins
0 Participants2 Participants0 Participants2 Participants
Study Site
Site #01 - University Hospital Brno
0 Participants0 Participants1 Participants1 Participants
Study Site
Site #02 - Children's Health Queensland
1 Participants0 Participants1 Participants2 Participants
Study Site
Site #03 - Christchurch Hospital
2 Participants3 Participants2 Participants7 Participants
Study Site
Site #04 - University of Navarra
4 Participants3 Participants4 Participants11 Participants
Study Site
Site #05 - Mayo Clinic
0 Participants1 Participants1 Participants2 Participants
Study Site
Site #06 - Phoenix Children's Hospital
2 Participants1 Participants2 Participants5 Participants
Study Site
Site #07 - Spectrum Health, Michigan
3 Participants3 Participants3 Participants9 Participants
Study Site
Site #08 - University of California, San Diego
4 Participants2 Participants3 Participants9 Participants
Study Site
Site #09 - University of Virginia
0 Participants1 Participants1 Participants2 Participants
Study Site
Site #10 - University of Pecs
1 Participants2 Participants1 Participants4 Participants
Study Site
Site #11 - Slovakia National Institute of Children's Diseases
2 Participants2 Participants3 Participants7 Participants
Study Site
Site #12 - Bethesda Children's Hospital
4 Participants7 Participants5 Participants16 Participants
Study Site
Site #13 - University of Szeged
0 Participants0 Participants0 Participants0 Participants
Study Site
Site #14 - Clinic of Neurology and Psychiatry for Children and Youth, Belgrade
3 Participants3 Participants2 Participants8 Participants
Study Site
Site #15 - Clinical Center of Serbia
2 Participants3 Participants2 Participants7 Participants
Study Site
Site #16 - National Taiwan University
5 Participants5 Participants5 Participants15 Participants
Weight68.9 kilograms
STANDARD_DEVIATION 24.3
68.4 kilograms
STANDARD_DEVIATION 25.8
68.1 kilograms
STANDARD_DEVIATION 22.8
68.5 kilograms
STANDARD_DEVIATION 24.2

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 360 / 330 / 38
other
Total, other adverse events
29 / 3627 / 3327 / 38
serious
Total, serious adverse events
2 / 362 / 332 / 38

Outcome results

Primary

Percentage of Participants Obtaining Successful Treatment

Success on the Investigator Global Assessment (IGA) scale is defined as clear or almost clear with an improvement of at least two grades from baseline. IGA scores range from 0-4: 0=Clear 1. Almost Clear 2. Mild 3. Moderate 4. Severe

Time frame: After 26 weeks treatment

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
0.5% Rapamycin Cream, TopicalPercentage of Participants Obtaining Successful Treatment4 Participants
1.0% Rapamycin Cream, TopicalPercentage of Participants Obtaining Successful Treatment3 Participants
PlaceboPercentage of Participants Obtaining Successful Treatment2 Participants
Secondary

Categorical Change in Facial Angiofibroma

Change in facial angiofibroma since beginning treatment on a 5-point scale, as assessed by the participant or parent/caregiver. This was a single assessment time-point, where the participant or parent/caregiver evaluated the change in the facial angiofibroma lesion appearance from their perspective since baseline.

Time frame: After 26 weeks treatment

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
0.5% Rapamycin Cream, TopicalCategorical Change in Facial Angiofibroma+2 - Moderately Better13 Participants
0.5% Rapamycin Cream, TopicalCategorical Change in Facial Angiofibroma+3 - Significantly Better16 Participants
0.5% Rapamycin Cream, TopicalCategorical Change in Facial Angiofibroma0 - No Difference0 Participants
0.5% Rapamycin Cream, TopicalCategorical Change in Facial AngiofibromaMissing4 Participants
0.5% Rapamycin Cream, TopicalCategorical Change in Facial Angiofibroma+1 - Slightly Better2 Participants
0.5% Rapamycin Cream, TopicalCategorical Change in Facial Angiofibroma-1 - Worse1 Participants
1.0% Rapamycin Cream, TopicalCategorical Change in Facial Angiofibroma+3 - Significantly Better13 Participants
1.0% Rapamycin Cream, TopicalCategorical Change in Facial Angiofibroma+2 - Moderately Better7 Participants
1.0% Rapamycin Cream, TopicalCategorical Change in Facial Angiofibroma-1 - Worse0 Participants
1.0% Rapamycin Cream, TopicalCategorical Change in Facial Angiofibroma0 - No Difference1 Participants
1.0% Rapamycin Cream, TopicalCategorical Change in Facial AngiofibromaMissing5 Participants
1.0% Rapamycin Cream, TopicalCategorical Change in Facial Angiofibroma+1 - Slightly Better7 Participants
PlaceboCategorical Change in Facial AngiofibromaMissing2 Participants
PlaceboCategorical Change in Facial Angiofibroma+3 - Significantly Better4 Participants
PlaceboCategorical Change in Facial Angiofibroma-1 - Worse0 Participants
PlaceboCategorical Change in Facial Angiofibroma0 - No Difference12 Participants
PlaceboCategorical Change in Facial Angiofibroma+1 - Slightly Better11 Participants
PlaceboCategorical Change in Facial Angiofibroma+2 - Moderately Better9 Participants
Secondary

Change From Baseline in Facial Angiofibroma Severity Index (FASI)

The change in grading on the Facial Angiofibroma Severity Index (FASI) from baseline. FASI grades lesions according to their erythema, size and extent by summing the scores of each category. The final FASI scores range from (mild) 2-9 (severe). Erythema Skin color 0 Light Red 1 Red 2 Dark Red/purple 3 Size None 0 Small (\< 5mm) 1 Large (\> 5mm) 2 Confluent 3 Extension \<50 % cheek surface 2 \>50% cheek surface 3

Time frame: At baseline and after 26 weeks treatment

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
0.5% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)-210 Participants
0.5% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)Missing1 Participants
0.5% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)07 Participants
0.5% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)-110 Participants
0.5% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)-51 Participants
0.5% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)+20 Participants
0.5% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)-36 Participants
0.5% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)-41 Participants
0.5% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)+10 Participants
1.0% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)-113 Participants
1.0% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)-51 Participants
1.0% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)-43 Participants
1.0% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)-33 Participants
1.0% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)-29 Participants
1.0% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)04 Participants
1.0% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)+10 Participants
1.0% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)+20 Participants
1.0% Rapamycin Cream, TopicalChange From Baseline in Facial Angiofibroma Severity Index (FASI)Missing0 Participants
PlaceboChange From Baseline in Facial Angiofibroma Severity Index (FASI)-31 Participants
PlaceboChange From Baseline in Facial Angiofibroma Severity Index (FASI)-50 Participants
PlaceboChange From Baseline in Facial Angiofibroma Severity Index (FASI)+11 Participants
PlaceboChange From Baseline in Facial Angiofibroma Severity Index (FASI)-41 Participants
PlaceboChange From Baseline in Facial Angiofibroma Severity Index (FASI)Missing0 Participants
PlaceboChange From Baseline in Facial Angiofibroma Severity Index (FASI)-117 Participants
PlaceboChange From Baseline in Facial Angiofibroma Severity Index (FASI)-23 Participants
PlaceboChange From Baseline in Facial Angiofibroma Severity Index (FASI)+21 Participants
PlaceboChange From Baseline in Facial Angiofibroma Severity Index (FASI)014 Participants
Secondary

Change From Baseline in Investigator's Global Assessment

The change in grading on the Investigator's Global Assessment (IGA) scale from baseline. IGA scores range from 0-4: 0=Clear 1. Almost Clear 2. Mild 3. Moderate 4. Severe

Time frame: At baseline and after 26 weeks treatment

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
0.5% Rapamycin Cream, TopicalChange From Baseline in Investigator's Global Assessment+10 Participants
0.5% Rapamycin Cream, TopicalChange From Baseline in Investigator's Global Assessment015 Participants
0.5% Rapamycin Cream, TopicalChange From Baseline in Investigator's Global Assessment-24 Participants
0.5% Rapamycin Cream, TopicalChange From Baseline in Investigator's Global Assessment-116 Participants
0.5% Rapamycin Cream, TopicalChange From Baseline in Investigator's Global AssessmentMissing1 Participants
1.0% Rapamycin Cream, TopicalChange From Baseline in Investigator's Global Assessment013 Participants
1.0% Rapamycin Cream, TopicalChange From Baseline in Investigator's Global Assessment-23 Participants
1.0% Rapamycin Cream, TopicalChange From Baseline in Investigator's Global Assessment-117 Participants
1.0% Rapamycin Cream, TopicalChange From Baseline in Investigator's Global Assessment+10 Participants
1.0% Rapamycin Cream, TopicalChange From Baseline in Investigator's Global AssessmentMissing0 Participants
PlaceboChange From Baseline in Investigator's Global AssessmentMissing0 Participants
PlaceboChange From Baseline in Investigator's Global Assessment+11 Participants
PlaceboChange From Baseline in Investigator's Global Assessment-22 Participants
PlaceboChange From Baseline in Investigator's Global Assessment028 Participants
PlaceboChange From Baseline in Investigator's Global Assessment-17 Participants
Secondary

Objective (Clinician) Percentage Change Rating Scale

Percentage improvement in facial angiofibroma since beginning treatment, as assessed by the clinician. A large value indicates most improvement to facial angiofibroma (minimum=0, maximum=100). This was a single assessment time-point, where clinicians estimated the percentage change in the facial angiofibroma lesion appearance from their perspective since baseline.

Time frame: After 26 weeks treatment

ArmMeasureValue (MEAN)Dispersion
0.5% Rapamycin Cream, TopicalObjective (Clinician) Percentage Change Rating Scale47.83 Percentage ChangeStandard Error 3.88
1.0% Rapamycin Cream, TopicalObjective (Clinician) Percentage Change Rating Scale49.39 Percentage ChangeStandard Error 5.22
PlaceboObjective (Clinician) Percentage Change Rating Scale20.76 Percentage ChangeStandard Error 4.05
Secondary

Subjective (Participant or Parent/Caregiver) Percentage Change Rating Scale

Percentage change in facial angiofibroma since beginning treatment, as assessed by the participant or parent/caregiver. A large value indicates most improvement to facial angiofibroma (minimum=0, maximum=100). This was a single assessment time-point, where the participant or parent/caregiver estimated the percentage change in the facial angiofibroma lesion appearance from their perspective since baseline.

Time frame: After 26 weeks treatment

ArmMeasureValue (MEAN)Dispersion
0.5% Rapamycin Cream, TopicalSubjective (Participant or Parent/Caregiver) Percentage Change Rating Scale57.06 Percentage ChangeStandard Error 4.36
1.0% Rapamycin Cream, TopicalSubjective (Participant or Parent/Caregiver) Percentage Change Rating Scale54.06 Percentage ChangeStandard Error 5.21
PlaceboSubjective (Participant or Parent/Caregiver) Percentage Change Rating Scale30.84 Percentage ChangeStandard Error 3.89
Secondary

Time to Treatment Success

The time elapsed from the first dose to the time of treatment success, according to the Investigator's Global Assessment (IGA) scale. The total time of treatment was 26 weeks, although Covid-19 visit delays led to an extension of up to 2 weeks (28 weeks total) for some patients. Success on the Investigator Global Assessment (IGA) scale is defined as clear or almost clear with an improvement of at least two grades from baseline. IGA scores range from 0-4: 0=Clear 1. Almost Clear 2. Mild 3. Moderate 4. Severe

Time frame: From first dose to 26 weeks (± 2 weeks)

ArmMeasureValue (MEAN)Dispersion
0.5% Rapamycin Cream, TopicalTime to Treatment Success25.89 weeksStandard Error 0.7
1.0% Rapamycin Cream, TopicalTime to Treatment Success26.71 weeksStandard Error 0.28
PlaceboTime to Treatment Success19.7 weeksStandard Error 0.22

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026