Clinical trial NCT03718442: Low Energy Dissection Vs. Electrocautery in Lumpectomy Shaved Surgical Margins
Official title: Low Energy Dissection Vs. Electrocautery Qualitative Severity and Depth of Thermal Artifact in Breast Cancer Lumpectomy Shaved Surgical Margins
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: Breast Cancer Female
Lead sponsor: Invuity, Inc.
Sponsor class: INDUSTRY
Collaborators: name: Montefiore Medical Center
First posted: 2018-10-24
Enrollment: 20
Sex: FEMALE
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: CASE_ONLY
Time perspective: PROSPECTIVE
Sampling method: PROBABILITY_SAMPLE
Study population: Women who have a diagnosis of breast cancer and undergo a lumpectomy

Brief summary: The purpose of this study is to compare the qualitative severity and depth of dissection devices' associated thermal artifact in breast lumpectomy shaved margins between the use of electrocautery and low thermal energy dissection, PhotonBlade.

The investigators hypothesize that the use of PhotonBlade would result in a significantly lower qualitative severity and a shorter depth of thermal artifact in breast lumpectomies shaved margins, when compared to electrocautery devices.

Detailed description: When performing lumpectomy, surgeons have used electrocautery devices as dissecting tools. However, those devices use high thermal energy that might impact the margin cellular architecture and as such the quality of margin assessment by the pathologist. Moreover, recently, modern low thermal energy dissection devices have been introduced to the market. However, the impact of those devices on reducing the thermal injury/artifact on surgical margin has not been well investigated. 4,5 While Ruidaz et al. 2011 data suggest that using the traditional electrosurgical device in place of the low thermal-injury device results in 48% of the close margin samples being negatively converted to false-positive, and in 11% converting from close to false-negative, there is still a need for more studies to further characterize the utility of those devices. 6 PhotonBlade (Invuity, San Francisco, CA, USA) has been approved by United States Food and Drug Administration (FDA). PhotonBlade is a dynamic precision illuminator with enhanced energy delivery dissection device. The dynamic precision illumination is a thermally cool illumination technology that allows a uniformal illumination without glare or shadow. 7 The enhanced energy delivery technology allows low thermal spread, surgeon controlled edge temperature, and wet field use.7 As such, PhontonBlade allows better blade control for achieving adequate visualization, hemostasis, with a minimum collateral damage to the surgical margin tissue. The use of PhotonBlade demonstrated the least penetrating thermal tissue damage/spread when compared to other modern dissection devices (Valleylab Pencil, Valleylab EDGE Coated Pencil, PlasmaBlade 3.0S and PlasmaBlade 4.0).8

Eligibility criteria: Inclusion Criteria:

* have aged 18 years old or older.
* have DCIS or Invasive breast cancer that is eligible for breast-conserving surgery.
* have not had previous chest radiotherapy.
* understand the study purpose, requirements, and risks.
* able and willing to give informed consent.

Exclusion Criteria:

* None

Primary outcomes:
measure: Severity of thermal artifact
timeFrame: Through study completion, an average of 6 months
measure: Depth of thermal artifact
timeFrame: Through study completion, an average of 6 months
Secondary outcomes:
Other outcomes:
Locations:
Study officials:
References:
citation: ACS. Breast Cancer Facts and Figures 2011-2012. (2012).
citation: Vila J, Gandini S, Gentilini O. Overall survival according to type of surgery in young (</=40 years) early breast cancer patients: A systematic meta-analysis comparing breast-conserving surgery versus mastectomy. Breast. 2015 Jun;24(3):175-81. doi: 10.1016/j.breast.2015.02.002. Epub 2015 Feb 23.
citation: Pleijhuis RG, Graafland M, de Vries J, Bart J, de Jong JS, van Dam GM. Obtaining adequate surgical margins in breast-conserving therapy for patients with early-stage breast cancer: current modalities and future directions. Ann Surg Oncol. 2009 Oct;16(10):2717-30. doi: 10.1245/s10434-009-0609-z. Epub 2009 Jul 17.
citation: Chiappa C, Rovera F, Corben AD, Fachinetti A, De Berardinis V, Marchionini V, Rausei S, Boni L, Dionigi G, Dionigi R. Surgical margins in breast conservation. Int J Surg. 2013;11 Suppl 1:S69-72. doi: 10.1016/S1743-9191(13)60021-7.
citation: Ruidiaz ME, Cortes-Mateos MJ, Sandoval S, Martin DT, Wang-Rodriguez J, Hasteh F, Wallace A, Vose JG, Kummel AC, Blair SL. Quantitative comparison of surgical margin histology following excision with traditional electrosurgery and a low-thermal-injury dissection device. J Surg Oncol. 2011 Dec;104(7):746-54. doi: 10.1002/jso.22012. Epub 2011 Jul 8.
citation: Haydon E. et al. Assessment of penetrating thermal tissue damage/spread associated with PhotonBlade™, Valleylab™ Pencil, Valleylab™ EDGE™ Coated Pencil, PlasmaBlade® 3.0S and PlasmaBlade® 4.0 for intraoperative tissue dissection using the fresh extirpated porcine muscle model