Effect of Radiation on Tissue for Delayed Breast Reconstruction
Studieoversikt
Status
Forhold
Intervensjon / Behandling
Detaljert 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.
Studietype
Registrering (Faktiske)
Fase
- Ikke aktuelt
Kontakter og plasseringer
Studiesteder
-
-
Michigan
-
Ann Arbor, Michigan, Forente stater, 48109
- University of Michigan
-
-
Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
Inclusion Criteria:
- Patients with invasive breast cancer who will require mastectomy and postmastectomy radiation therapy.
- Patients who meet criteria 1, who plan on postmastectomy breast reconstruction
Exclusion Criteria:
- Male patients
- Patients under the age of 18
- Patients of advanced age (greater than 75)
- Patients with comorbidities that affect wound healing.
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Grunnvitenskap
- Tildeling: N/A
- Intervensjonsmodell: Enkeltgruppeoppdrag
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
|
Eksperimentell: 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.
|
Biopsies, skin blood flow studies and ultrasound studies will be performed as described.
|
Hva måler studien?
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
|
Samarbeidspartnere og etterforskere
Etterforskere
- Hovedetterforsker: Adeyiza Momoh, MD, Univeristy of Michigan
Studierekorddatoer
Studer hoveddatoer
Studiestart
Primær fullføring (Faktiske)
Studiet fullført (Faktiske)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Anslag)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Andre studie-ID-numre
- 2012.032
- HUM00059038 (Annen identifikator: University of Michigan Medical School IRB)
Legemiddel- og utstyrsinformasjon, studiedokumenter
Studerer et amerikansk FDA-regulert medikamentprodukt
Studerer et amerikansk FDA-regulert enhetsprodukt
Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .