ClinicalTrials.gg
CompletedNCT03381846Updated Aug 5, 2020

Treatment of Dermatofibrosarcoma Protuberans in Patients 10 Years and Younger

An interventional study of MOHS micrographic surgery and Wide local excision in Dermatofibrosarcoma Protuberans, sponsored by Mayo Clinic. Completed at 1 site in United States. Open to participants aged 1 Year to 10 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2020-08-05.

Sponsored by Mayo Clinic · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
7
Allocation
Not applicable
Ages
1 Year to 10 Years
Sex
All
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Study summary

The purpose of this proposed study is to assess effectiveness of MOHS micrographic surgery as a form of treatment for dermatofibrosarcoma protuberans in patients who are 10 years of age or younger through review of the patients at Mayo Clinic treated from 1988-2017, and to explore the challenges that providers face which may prevent them performing this potentially superior treatment. This study will provide a comparison of outcomes and recurrence rates in pediatric patients treated by MOHS versus traditional excision.

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Conditions studied

  • Dermatofibrosarcoma Protuberans

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In context

Dermatofibrosarcoma

41 studies on the registry are indexed under Dermatofibrosarcoma; 9 are open to participants now.

This study's enrollment of 7 is below the median of 50 across 36 interventional studies indexed under Dermatofibrosarcoma.

Browse Dermatofibrosarcoma studies →

Lead sponsor

Mayo Clinic is the lead sponsor of 3,269 studies on the registry; 672 are open to participants now.

Of its 452 completed or terminated interventional studies of FDA-regulated products, 321 (71%) have results posted.

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

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Who can participate

Ages eligible
1 Year to 10 Years
Sexes eligible
All
Accepts healthy volunteers
Yes

Eligibility criteria

Must be 10 years of age or younger. Must have proven dermatofibrosarcoma protuberans.

Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
7 participants (actual)

Study arms

  • Experimental
    MOHS treatment arm

    Patients who have their dermatofibrosarcoma protuberans excised with MOHS surgery.

    Procedure: MOHS micrographic surgery · Procedure: Wide local excision

Interventions

  • ProcedureMOHS micrographic surgery

    Mohs surgery is a precise surgical technique used to treat skin cancer. Thin layers of cancer-containing skin are progressively removed and examined microscopically until only cancer-free tissue remains.

  • ProcedureWide local excision

    A surgical technique in which the skin cancer is excised along with 2-3 cm of clinically normal appearing surrounding tissue.

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What researchers measure

Primary outcomes

  1. Patient developing recurrence of a biopsy-proven dermatofibrosarcoma protuberans at one year.

    Developing an additional dermatofibrosarcoma protuberans at any location, but particularly noting local recurrence (defined as being within or contiguous to the field of the previous excision.

    Time frame: Recurrence will be assessed at 1 year.

Secondary outcomes

  1. All cause mortality

    Death secondary to any cause

    Time frame: All cause mortality will be assessed at 1 year, and then annually thereafter for up to 10 years. All patients will have at least one year of follow up.

  2. Mortality related to dermatofibrosarcoma protuberans

    Death which is directly related to the dermatofibrosarcoma or complications related to it as judged by clinical investigators

    Time frame: Mortality related to dermatofibrosarcoma protuberans will be assessed at 1 year, and then annually thereafter for up to 10 years. All patients will have at least one year of follow up.

  3. Morbidity secondary to surgical procedure

    Will be measured by the area of tissue removed and any functional or physical impairment which resulted from the surgical procedure such as limited range of motion, resulting reported pain, or any reported complications.

    Time frame: Morbidity secondary to surgical procedure will be assessed at 1 year, and then annually thereafter for up to 10 years. All patients will have at least one year of follow up.

  4. Patient developing recurrence of a biopsy-proven dermatofibrosarcoma protuberans at two years.

    Developing an additional dermatofibrosarcoma protuberans at any location, but particularly noting local recurrence (defined as being within or contiguous to the field of the previous excision.

    Time frame: Recurrence will be assessed at 2 years. (Not all patients will have a full two years of follow up)

  5. Patient developing recurrence of a biopsy-proven dermatofibrosarcoma protuberans at five years.

    Developing an additional dermatofibrosarcoma protuberans at any location, but particularly noting local recurrence (defined as being within or contiguous to the field of the previous excision.

    Time frame: Recurrence will be assessed at 5 years. (Not all patients will have a full five years of follow up)

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Study locations

1 site
  • Mayo Clinic in Rochester
    Rochester, Minnesota 55905, United States
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References and documents

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 5, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03381846
Lead sponsor
Mayo Clinic
Responsible party
Randall K. Roenigk (Professor of Dermatology, Mayo Clinic) — Principal investigator
First posted
Dec 22, 2017
Start date
Jul 1, 2018
Primary completion
Jun 30, 2020
Completion
Jun 30, 2020
Last update
Aug 5, 2020

Study contacts

Randall K Roenigk
principal investigator · Mayo Clinic

Oversight

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

Not currently enrolling

This study is completed, as verified in Aug 2020. You cannot join it, but the record below documents what was studied.

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