This study is a prospective, multi-center, observational post-market safety study evaluating the incidence of anaphylaxis and hypersensitivity reactions associated with LUMISIGHT (pegulicianine) administration in adults with breast cancer undergoing lumpectomy surgery. Participants are indicated to receive LUMISIGHT as part of their breast cancer care. There is no investigational drug associated with this study. LUMISIGHT has a risk of serious hypersensitivity reaction, and this study seeks to further evaluate that risk.

The LumiSystem is the combination of FDA approved LUMISIGHT (pegulicianine) for injection (NDA 214511) and Lumicell Direct Visualization System (DVS) (PMA P230014). These products are indicated for fluorescence imaging in adults with breast cancer as an adjunct for the intraoperative detection of cancerous tissue within the resection cavity following removal of the primary specimen during lumpectomy surgery. This post market study is a prospective, multi-center, observational post-market safety study evaluating the incidence of anaphylaxis and hypersensitivity reactions associated with LUMISIGHT (pegulicianine) administration in adults with breast cancer undergoing lumpectomy surgery. Additional study objectives are to evaluate the incidence of and characterize other severe hypersensitivity reactions. Study assessments include assessment of adverse events of interest (including laboratory data as indicated in this protocol), physical examination, and assessment of blood pressure, heart rate, and oxygen saturation before and after LUMISIGHT administration. Suspected cases of anaphylaxis and hypersensitivity reactions are adjudicated by a Clinical Endpoint Adjudication Committee according to a standard anaphylaxis definition and hypersensitivity grading system.

Inclusion Criteria:

• 18 years of age or older
• Has been diagnosed with primary breast cancer and scheduled to undergo a lumpectomy procedure
• Indicated to receive LUMISIGHT at a dose of 1 mg/kg
• Willing and able to comply with the study procedures

Exclusion Criteria:

• History of hypersensitivity reactions to pegulicianine.
• Inability to comply with the requirements of the protocol.
• Treating physician does not think it is in the best interest of the patient to participate.

The analysis population consists of the post-market safety population who are injected with LUMISIGHT. The post-market safety population is defined by the indication for use and contraindications as described in the Prescribing Information for LUMISIGHT under NDA 214511.