BRCA1 is a tumor
s; if even one copy of it is damaged, cancer
can develop. Certain mutation
s confer a high probability (85% lifetime risk) of developing breast cancer
, and other types cause ovarian cancer
. Familial mutations of this gene
are particularly common among people in the Ashkenazi Jewish ethnic
From the BioTech Dictionary at http://biotech.icmb.utexas.edu/. For further information see the BioTech homenode.