From previous data, one would expect at least 10% of affected Ashkenazi Jewish women to carry 1 of 3 common BRCA1/2 founder GPVs in this population.37 Here, we found that only 3.7% of Ashkenazi Jewish women with breast cancer were carriers of BRCA1 c.68_69del (1 woman carried a nonfounder BRCA1 variant). The gene discussed is BRCA1; the disease is breast cancer.