Abstract
Background
This study seeks to determine whether there is a delay in time to surgery in breast cancer patients with panel tests compared with traditional BRCA testing.
Methods
This study was a retrospective review of women diagnosed with breast cancer who underwent genetic evaluation from our institution's Genetic Counselor Database from January 2013 to August 2015. Patients were excluded if they were male, clinical information was unavailable, the patient underwent neoadjuvant chemotherapy, had a diagnosis of recurrent breast cancer during time of study, or had postoperative genetics evaluation.
Results
Included in the study were 138 patients. The time from diagnosis to surgery for BRCA1/2 tested patients was 43.5 days compared with 51.0 days in the panel group (p = 0.186). Turnaround time for genetic testing decreased during the period studied and was approximately 6 days longer for panel testing than BRCA testing. It took 12.2 days for BRCA results and 18.9 days for the panel results (p < 0.01). Turnaround time for BRCA1/2 testing in 2014 and 2015 was 12.4 and 10.5 days respectively, whereas panel testing was 20.5 and 18.2 days (p ≤ 0.001). Of the variables included in multivariable linear regression, only mastectomy significantly contributed to time to surgery (p < 0.001).
Discussion
Panel genetic testing did not delay time to surgery compared with BRCA testing alone. The use of panel testing has increased over time, and lab turnaround time has decreased. Mastectomy was the only clinical variable contributing to longer time to surgery.
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