i5009188
From SNPedia
Due to 23andMe's secrecy policy about what exactly is being assayed at the location they call i5009188, it is not possible to be sure whether this is a pathogenic (or benign) BRCA2 gene mutation.
The best guess is that this SNP is equivalent to rs80359358, but it could also be rs80359356 or rs80359357, all three of which are considered pathogenic for breast cancer in ClinVar. It could also be something else entirely; only 23andMe knows.
For information about causal/pathogenic BRCA2 mutations and what they imply about the odds of developing breast cancer, please see the BRCA2 page and links from that page.
