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Safety and Efficacy Study of Topical Cantharidin for the Treatment of Molluscum Contagiosum

Randomized Pilot Study Investigating the Safety and Efficacy of Topical Cantharidin for the Treatment of Molluscum Contagiosum

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02665260
Enrollment
94
Registered
2016-01-27
Start date
2012-07-31
Completion date
2016-01-31
Last updated
2017-05-05

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

Conditions

Molluscum Contagiosum

Brief summary

The purpose of this study is to determine if cantharidin is a safe and effective treatment for molluscum contagiosum in kids

Detailed description

This was a double-blind, placebo-controlled trial. Participants were recruited from the Pediatric Dermatology clinic at Montefiore Medical Center. One hundred eligible participants were randomly assigned to receive cantharidin 0.7% topical, cantharidin 0.7% topical with occlusion, placebo, or placebo with occlusion. Treatments were applied at weeks 0 and 3 (blinded phase). At week 6, all participants were treated with open-label, topical cantharidin 0.7% without occlusion every 3 weeks until all lesions resolved (open-label phase).

Interventions

cantharidin 0.7% topical liquid

DRUGPlacebo

Placebo topical liquid

DEVICEGauze occlusion bandage

Gauze occlusion bandage with adhesive tape

Sponsors

Montefiore Medical Center
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)

Eligibility

Sex/Gender
ALL
Age
2 Years to 17 Years
Healthy volunteers
Yes

Inclusion criteria

* 2-17years * Healthy * \<50 molluscum contagiosum lesions

Exclusion criteria

* Immunosuppressed * Oral corticosteroids * Sexually active/pregnant

Design outcomes

Primary

MeasureTime frameDescription
Number of Subjects Who Achieve Complete Clearance at 6 Weeks6 weeksAssess number of subjects who achieve a lesion count of zero at 6 weeks (end of open-label phase)

Secondary

MeasureTime frameDescription
Number of Subjects Who Experienced an Adverse Event33 weeksNumber of subjects who experienced an adverse event as assessed by patient-reported outcomes questionnaire at each visit

Participant flow

Pre-assignment details

A total of 6 subjects met exclusion criteria for having greater than 50 molluscum contagiosum lesions at screening.

Participants by arm

ArmCount
Cantharidin
Patients treated with 0.7% topical cantharidin without occlusion
23
Cantharidin With Occlusion
Patients treated with 0.7% topical cantharidin with occlusion
24
Placebo
Patients treated with placebo without occlusion
22
Placebo With Occlusion
Patients treated with placebo vehicle with occlusion
25
Total94

Baseline characteristics

CharacteristicCantharidinCantharidin With OcclusionPlaceboPlacebo With OcclusionTotal
Age, Categorical
<=18 years
23 Participants24 Participants22 Participants25 Participants94 Participants
Age, Categorical
>=65 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
Between 18 and 65 years
0 Participants0 Participants0 Participants0 Participants0 Participants
Race/Ethnicity, Customized
African American
1 participants3 participants3 participants5 participants12 participants
Race/Ethnicity, Customized
Asian
0 participants1 participants3 participants1 participants5 participants
Race/Ethnicity, Customized
Caucasian
0 participants4 participants3 participants1 participants8 participants
Race/Ethnicity, Customized
Hispanic
22 participants16 participants13 participants17 participants68 participants
Race/Ethnicity, Customized
Jamaican
0 participants0 participants0 participants1 participants1 participants
Sex: Female, Male
Female
14 Participants13 Participants10 Participants15 Participants52 Participants
Sex: Female, Male
Male
9 Participants11 Participants12 Participants10 Participants42 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
— / —— / —— / —— / —
other
Total, other adverse events
0 / 230 / 240 / 220 / 25
serious
Total, serious adverse events
0 / 230 / 240 / 220 / 25

Outcome results

Primary

Number of Subjects Who Achieve Complete Clearance at 6 Weeks

Assess number of subjects who achieve a lesion count of zero at 6 weeks (end of open-label phase)

Time frame: 6 weeks

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Cantharidin With OcclusionNumber of Subjects Who Achieve Complete Clearance at 6 WeeksNumber of subjects achieving lesion clearance10 Participants
Cantharidin With OcclusionNumber of Subjects Who Achieve Complete Clearance at 6 WeeksNumber of subjects not achieving lesion clearance14 Participants
Cantharidin Without OcclusionNumber of Subjects Who Achieve Complete Clearance at 6 WeeksNumber of subjects not achieving lesion clearance16 Participants
Cantharidin Without OcclusionNumber of Subjects Who Achieve Complete Clearance at 6 WeeksNumber of subjects achieving lesion clearance7 Participants
Placebo With OcclusionNumber of Subjects Who Achieve Complete Clearance at 6 WeeksNumber of subjects achieving lesion clearance2 Participants
Placebo With OcclusionNumber of Subjects Who Achieve Complete Clearance at 6 WeeksNumber of subjects not achieving lesion clearance23 Participants
Placebo Without OcclusionNumber of Subjects Who Achieve Complete Clearance at 6 WeeksNumber of subjects achieving lesion clearance3 Participants
Placebo Without OcclusionNumber of Subjects Who Achieve Complete Clearance at 6 WeeksNumber of subjects not achieving lesion clearance19 Participants
Secondary

Number of Subjects Who Experienced an Adverse Event

Number of subjects who experienced an adverse event as assessed by patient-reported outcomes questionnaire at each visit

Time frame: 33 weeks

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Cantharidin With OcclusionNumber of Subjects Who Experienced an Adverse EventNumber experiencing adverse event0 Participants
Cantharidin With OcclusionNumber of Subjects Who Experienced an Adverse EventNumber not experiencing adverse event23 Participants
Cantharidin Without OcclusionNumber of Subjects Who Experienced an Adverse EventNumber not experiencing adverse event24 Participants
Cantharidin Without OcclusionNumber of Subjects Who Experienced an Adverse EventNumber experiencing adverse event0 Participants
Placebo With OcclusionNumber of Subjects Who Experienced an Adverse EventNumber experiencing adverse event0 Participants
Placebo With OcclusionNumber of Subjects Who Experienced an Adverse EventNumber not experiencing adverse event22 Participants
Placebo Without OcclusionNumber of Subjects Who Experienced an Adverse EventNumber experiencing adverse event0 Participants
Placebo Without OcclusionNumber of Subjects Who Experienced an Adverse EventNumber not experiencing adverse event25 Participants

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