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Effect of Radiation on Tissue for Delayed Breast Reconstruction

24. maj 2017 opdateret af: University of Michigan Rogel Cancer Center
The purpose of this study is to investigate the effects of radiation therapy following mastectomy on skin and blood vessels and to use information gathered to determine an ideal time for breast reconstruction after radiation.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

In the setting of post-mastectomy radiation therapy delayed autologous reconstruction, favored by many attempts to avoid complications encountered with radiating the immediately reconstructed breast. The timing of delayed reconstruction is however not known. The goal of this proposal is to study the gross, structural and vascular changes in radiated mastectomy skin in addition to possible structural and flow changes of the underlying internal mammary vessels over time. We plan to use these objective findings as a basis for determining an ideal time frame for delayed autologous breast reconstruction.

Sequential mastectomy skin specimens will be obtained from 20 patients undergoing post-mastectomy radiation therapy over a 24 month period and these specimens will be evaluated histologically. These same patients will also undergo serial examinations and photographic documentation of gross skin changes. Skin perfusion will be assessed by laser Doppler imaging and internal mammary vessel structure, and flow characteristics will be assessed by color Doppler sonography.

Based on these studies, we will elucidate short and long term changes in radiated breast skin, showing inflammatory, structural and perfusion patterns that can be correlated with optimal conditions for reconstruction. This has the potential to dramatically change practice patterns of delayed reconstruction for many reconstructive surgeons and more importantly restore what patients loose with mastectomy in a consistent, timely fashion. There is also potential for improved outcomes of delayed breast reconstruction by decreasing the number of reconstructions performed too soon after completion of radiation.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

10

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Forenede Stater
    • Michigan
      • Ann Arbor, Michigan, Forenede Stater, 48109
        • University of Michigan

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 75 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Kvinde

Beskrivelse

Inclusion Criteria:

  1. Patients with invasive breast cancer who will require mastectomy and postmastectomy radiation therapy.
  2. Patients who meet criteria 1, who plan on postmastectomy breast reconstruction

Exclusion Criteria:

  1. Male patients
  2. Patients under the age of 18
  3. Patients of advanced age (greater than 75)
  4. Patients with comorbidities that affect wound healing.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Grundvidenskab
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Skin and blood vessel procedures
All patients will be placed into Arm 1. They will undergo punch biopsies of the breast skin at the time of mastectomy and at 2, 4, 6, 8 and 12 months after completion of radiation therapy. Three more biopsies will be taken at 3, 6, and 12 months after completion of reconstruction. Patients will also undergo skin blood flow studies with a laser imaging device prior to each biopsy procedure. Ultrasound studies of the chest vessels will be performed 4 times over the course of the study- once prior to radiation and at 2, 6 and 12 months after radiation.
Procedure: Skin and blood vessel procedures
Biopsies, skin blood flow studies and ultrasound studies will be performed as described.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
To evaluate cellular and histologic changes in mastectomy skin over time following completion of radiation therapy.
Tidsramme: 2, 4, 6, 8, 12 months post radiation therapy; 3, 6, 12 months post reconstruction
2, 4, 6, 8, 12 months post radiation therapy; 3, 6, 12 months post reconstruction

Sekundære resultatmål

Resultatmål
Tidsramme
To evaluate the vascular density of the skin and perfusion changes following radiation therapy.
Tidsramme: 2, 4, 6, 8, 12 months post radiation therapy; 3, 6, 12 months post reconstruction
2, 4, 6, 8, 12 months post radiation therapy; 3, 6, 12 months post reconstruction

Andre resultatmål

Resultatmål
Tidsramme
To evaluate changes in internal mammary vessel structure and flow characteristics over time following completion of radiation therapy.
Tidsramme: 2, 4, 6, 8, 12 months post radiation therapy; 3, 6, 12 months post reconstruction
2, 4, 6, 8, 12 months post radiation therapy; 3, 6, 12 months post reconstruction

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

University of Michigan Rogel Cancer Center

Efterforskere

  • Ledende efterforsker: Adeyiza Momoh, MD, Univeristy of Michigan

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. oktober 2012

Primær færdiggørelse (Faktiske)

15. juni 2015

Studieafslutning (Faktiske)

15. juni 2015

Datoer for studieregistrering

Først indsendt

14. august 2012

Først indsendt, der opfyldte QC-kriterier

14. august 2012

Først opslået (Skøn)

16. august 2012

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

30. maj 2017

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

24. maj 2017

Sidst verificeret

1. maj 2017

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • 2012.032
  • HUM00059038 (Anden identifikator: University of Michigan Medical School IRB)

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