Evaluating Mepitel in Post-mastectomy Patients and the Role of the Skin Microbiome in Radiation Dermatitis


About this study

The aim of this study is to examine alterations in the skin microbiome that occur during radiation therapy. The study design will examine changes secondary to ionizing radiation, and correlate these changes with the development and severity of radiation dermatitis. The goal is to improve understanding of the mechanism of radiation dermatitis.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

  • Age ≥ 18 years.
  • Histological confirmation of breast or chest wall malignancy
  • Primary or recurrent disease eligible
  • Post-mastectomy with or without reconstruction
  • Undergoing unilateral external beam radiotherapy at the Mayo Clinic - Rochester, MN or Mayo Clinic - Eau Claire, WI
  • Ability to complete questionnaire(s) by themselves or with assistance - Provide informed written consent
  • Willing to consent for photography of radiation field - Available to return to Mayo Clinic in within 6 weeks post-treatment for assessment
  • Able to initiate thin film usage within first 3 days of the initiation of treatment

Exclusion Criteria:

  • Documented history of adhesive or tape allergy
  • Unable to provide written consent
  • Patients with prior radiotherapy to any portion of the planned treatment site
  • Brachytherapy patients
  • Patients with active rash, pre-existing dermatitis, lupus, or scleroderma
  • Gross dermal involvement at initiation of radiotherapy
  • Recent use of systemic or topical antibiotics or antifungal medications within 14 days of swab collection
  • Recent use of any of the following within 14 days of swab collection: 
    • Systemic or topical steroids
    • Systemic immunosuppressant drugs
    • Ultraviolet light therapy
  • Clinical evidence of infection that in the judgement of the principle investigator would interfere with proper assessment of the skin microbiome
  • Prior organ or bone marrow transplant
  • Current lactation
  • Undergoing bilateral radiation

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Eau Claire, Wis.

Mayo Clinic principal investigator

Sarah James, M.D., Ph.D.

Closed for enrollment

Contact information:

Jessica Schneider



Rochester, Minn.

Mayo Clinic principal investigator

Kimberly Corbin, M.D.

Closed for enrollment

Contact information:

Jessica Schneider



More information


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Study Results Summary

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Supplemental Study Information

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Additional contact information

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