Single Step Lesion Annotation and Localization of Suspicious Breast Lesions

The SAVI Reflector is a nonradioactive infrared (IR)-activated electromagnetic wave device that can be implanted in the breast or lymph nodes under image-directed guidance, typically by mammography or sonography. Intraoperatively, the SCOUT hand-held device is then percutaneously applied to the breast or lymph node, creating an audible signal on the device console with a gradient which correlates to distance (in mm) from the target lesion and marker.

The Savi Scout surgical guidance system was approved by the U.S. Food and Drug Administration in 2014. Furthermore, it was approved for long term use, with no restrictions on the length of time in 2017.

The system consists of an implantable reflector with a 4-mm body size, preloaded in a 16-gauge deliverable needle, a hand-held probe and a console. The reflector consists of an IR light receptor, resistor switch and two antennae. This is placed into or near the target through a 16G needle under mammographic or sonographic guidance. The hand-held probe detects pulses of infrared (IR) light and radar wave signals, received by the console system, which then emits and receives signals back to the reflector to provide real time localization and target proximity information to the surgeon.

The SCOUT console provides audible and visual feedback intraoperatively, the frequency of which increases as the handheld reader approaches the implanted reflector. After excision of the breast lesion, the handheld reader can be used to immediately confirm removal of the reflector, present in the lumpectomy specimen, and subsequent quiescence of radar signal in the breast.

Study Overview

• Status: Terminated
• Conditions: Breast Lesions
• Intervention / Treatment: Device: SAVI Scout®

Detailed Description

Primary Endpoint:

-To measure success of surgical retrieval of SAVI Scout placed at the time of initial, or mid-chemo, imaging studies. To demonstrate the successful excision of unifocal tumor tissue and/or tumor bed (after neoadjuvant chemotherapy).

Other Endpoints:

• Safety: Number of device-related adverse events.
• Radiological Placement Radiologist-rated ease of placement using Likert scale
• Accuracy of placement:
• Accurate: Within the breast tumor
• Marginal: Within the peritumoral tissue < or equal 5 mm
• Inadequate: More than 5 mm
• Unacceptable: Required additional localization device placement
• Success rate of maintained position of SAVI Scout, measured on interval imaging:
• Accurate: Within the breast tumor
• Marginal: Within the peritumoral tissue < or equal 5 mm
• Inadequate: More than 5 mm

• Study Type: Interventional
• Enrollment (Actual): 27
• Phase: Early Phase 1

Contacts and Locations

Study Locations

• United States
  • Texas
    • Houston, Texas, United States, 77030
      • M D Anderson Cancer Center

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Female or male patients >18 years of age at the time of consent.
2. Unifocal BIRADS-5 or -6 lesions at the time of diagnostic imaging
3. Unifocal, histologically-proven T0-T3, N0-1 invasive breast cancer at the time of mid-chemotherapy imaging if receiving neoadjuvant therapy

Exclusion criteria

1. Distant metastasis
2. Inflammatory breast carcinoma
3. Nickel allergy
4. Patients with active cardiac implants
5. Patients participating in Protocol 2016-0046, Multicenter Trial for Eliminating Breast Cancer Surgery in Exceptional Responders to Neoadjuvant Therapy
6. Patients participating in Protocol AFT-25, Comparison of Operative to Monitoring and Endocrine Therapy for Low-risk DCIS (COMET)
7. Pregnant women will be excluded

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Diagnostic
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: SAVI Scout®; marker is accurately placed in the breast tumor	Device: SAVI Scout®; Savi Scout marker is placed within 1 cm of the breast tumor

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
Number of Participants With Treatment-Related Adverse Events as Assessed by CTCAE v4.0, Change From Baseline in Pain Scores on the Visual Analog Scale at 6 Weeks	through study completion, an average of 1 year

Collaborators and Investigators

• Sponsor: M.D. Anderson Cancer Center
• Investigators: Principal Investigator: Tanya Moseley, MD, M.D. Anderson Cancer Center

Publications and helpful links

Helpful Links

• M D Anderson Cancer Center website

Study record dates

Study Major Dates

• Study Start (Actual): April 11, 2022
• Primary Completion (Actual): January 22, 2025
• Study Completion (Actual): January 22, 2025

Study Registration Dates

• First Submitted: October 13, 2021
• First Submitted That Met QC Criteria: November 9, 2021
• First Posted (Actual): November 11, 2021

Study Record Updates

• Last Update Posted (Actual): March 25, 2025
• Last Update Submitted That Met QC Criteria: January 23, 2025
• Last Verified: January 1, 2025

More Information

Terms related to this study

• Other Study ID Numbers: 2021-0842; NCI-2021-11361 (Other Identifier: NCI-CTRP Clinical Trials Registry)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: Yes
• product manufactured in and exported from the U.S.: No