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Safety and Efficacy of Topical Cantharidin for the Treatment of Molluscum Contagiosum, Phase 2

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03017846
Enrollment
30
Registered
2017-01-11
Start date
2016-09-30
Completion date
2017-09-06
Last updated
2019-01-30

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

Conditions

Molluscum Contagiosum

Brief summary

Cantharidin is cited in the dermatology and pediatric literature as a valuable treatment option. Treatment is often available in private practice offices, where a prescribing physician may offer a non-FDA approved treatment on an individualized basis. The situation is different in many hospital and academic settings, such as our own for example, where the formulary is defined through a FDA-approved indication. The absence of an indication precludes its addition to many hospital formularies, thus limiting the options available to a prescribing physician and denying patient access to a treatment offered in the private practice setting. An indication and formulary status require controlled clinical trials on the safety and efficacy of cantharidin in MC. The objective of this trial is to see if this commercially-viable cantharidin formulation has a comparable safety and efficacy profile as formulations previously studied under conditions which most closely match the what has been historically done in the clinic.

Interventions

Application of topical cantharidin

Sponsors

Steven R Cohen
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
2 Years to 17 Years
Healthy volunteers
No

Inclusion criteria

Diagnosis of MC by the Principal Investigator. Maximum of 50 lesions on locations including the face, trunk, back, left or right arm, left or right leg, hands, feet, buttocks, and groin. Execution of Informed Consent and or assent forms

Exclusion criteria

Patients with immunosuppression, including organ transplantation, HIV infection. Patients utilizing immunosuppressive agents (including oral corticosteroids) will be excluded except for patients using inhaled corticosteroids, such as those utilized for asthma or allergic rhinitis. Females who have reached menarche and are sexually active as well as pregnant patients will be excluded as the effects of this drug have not been evaluated in pregnancy. Patients who have greater than 50 MC lesions will also be excluded from the study.

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Total Lesion ClearanceAssessed at each visit, until final visit on week 12100% reduction in baseline lesion count

Secondary

MeasureTime frameDescription
Number of Subjects Who Achieve a Clearance of at Least 90% of Their Molluscum LesionsAt study completion, up to 12 weeks
Change in the Total Children's Dermatology Life Quality Index ScoreBaseline (At beginning of study, before treatment) and end of study (at study completion, week 12 or at earlier visit if all lesions have cleared)Change in the Total Children's Dermatology Life Quality Index (CDLQI) given Visit 1 prior to the first treatment and at the last study visit, up to 12 weeks. The CDLQI examines how the patient feels about the symptoms and treatment, as well as how it affects leisure, school, personal relationships, sleep, clothing choices. A total score is calculated. The total score for the CDLQI scores range: 0-1 = no effect on child's life 2-6 = small effect 7-12 = moderate effect 13-18 = very large effect 19-30 = extremely large effect
Number of Patients Achieving Complete Lesion Clearance Compared to Prior Study (NCT02665260)At study completion, up to 12 weeksComparison of the number of subjects achieving complete lesion clearance at study completion (up to 12 weeks) to the same measure obtained in our previous study (NCT02665260)

Countries

United States

Participant flow

Participants by arm

ArmCount
Cantharidin Treatment
Subjects with lesions treated with topical cantharidin every 3 weeks up to 12 weeks. Cantharidin: Application of topical cantharidin
30
Total30

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyAdverse Event2
Overall StudyLost to Follow-up3

Baseline characteristics

CharacteristicCantharidin Treatment
Age, Customized
Age 11-13 years
1 Participants
Age, Customized
Age 1-3 years
6 Participants
Age, Customized
Age 14-17 years
0 Participants
Age, Customized
Age 4-6 years
11 Participants
Age, Customized
Age 7-10 years
12 Participants
Race/Ethnicity, Customized
African American
0 Participants
Race/Ethnicity, Customized
Asian
0 Participants
Race/Ethnicity, Customized
Caucasian
3 Participants
Race/Ethnicity, Customized
Hispanic
17 Participants
Race/Ethnicity, Customized
Missing
1 Participants
Race/Ethnicity, Customized
Other
9 Participants
Region of Enrollment
United States
30 participants
Sex: Female, Male
Female
16 Participants
Sex: Female, Male
Male
14 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 30
other
Total, other adverse events
28 / 30
serious
Total, serious adverse events
0 / 30

Outcome results

Primary

Number of Participants With Total Lesion Clearance

100% reduction in baseline lesion count

Time frame: Assessed at each visit, until final visit on week 12

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Cantharidin TreatmentNumber of Participants With Total Lesion Clearance11 Participants
Secondary

Change in the Total Children's Dermatology Life Quality Index Score

Change in the Total Children's Dermatology Life Quality Index (CDLQI) given Visit 1 prior to the first treatment and at the last study visit, up to 12 weeks. The CDLQI examines how the patient feels about the symptoms and treatment, as well as how it affects leisure, school, personal relationships, sleep, clothing choices. A total score is calculated. The total score for the CDLQI scores range: 0-1 = no effect on child's life 2-6 = small effect 7-12 = moderate effect 13-18 = very large effect 19-30 = extremely large effect

Time frame: Baseline (At beginning of study, before treatment) and end of study (at study completion, week 12 or at earlier visit if all lesions have cleared)

Population: All patients who were not lost to follow-up.

ArmMeasureGroupValue (MEAN)Dispersion
Cantharidin TreatmentChange in the Total Children's Dermatology Life Quality Index ScoreAt beginning of study, before treatment3.9 score on a scaleStandard Deviation 5.6
Cantharidin TreatmentChange in the Total Children's Dermatology Life Quality Index ScoreAt end of study0.38 score on a scaleStandard Deviation 1.3
Secondary

Number of Patients Achieving Complete Lesion Clearance Compared to Prior Study (NCT02665260)

Comparison of the number of subjects achieving complete lesion clearance at study completion (up to 12 weeks) to the same measure obtained in our previous study (NCT02665260)

Time frame: At study completion, up to 12 weeks

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Cantharidin TreatmentNumber of Patients Achieving Complete Lesion Clearance Compared to Prior Study (NCT02665260)11 Participants
NCT02665260Number of Patients Achieving Complete Lesion Clearance Compared to Prior Study (NCT02665260)7 Participants
Secondary

Number of Subjects Who Achieve a Clearance of at Least 90% of Their Molluscum Lesions

Time frame: At study completion, up to 12 weeks

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Cantharidin TreatmentNumber of Subjects Who Achieve a Clearance of at Least 90% of Their Molluscum Lesions14 Participants

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