Science Selective Mastectomy SDPB | By Nathan Puhl Published May 17, 2013 at 1:39 PM CDT Twitter LinkedIn Email Listen • 10:53 Sanford Genetic Counselor Kristen DeBerg joins the program to discuss selective mastectomy. Kristen is the person who runs the test to find out the BRCA2 gene, which is what put Angelina Jolie at such a high risk.