rs9332239, also known as 1465C>T, 50338C>T or P489S, is a SNP in the CYP2C9 gene.
The rs9332239(T) allele defines the CYP2C9*12 variant.
According to a 23andMe discussion This is one of the SNPs which were re-analyzed April 2009. Customers with older data may wish to redownload. SNPs effected rs4420638, rs34276300, rs3091244, rs34601266, rs2033003, rs7900194, rs9332239, rs28371685, rs1229984, and rs28399504.
[PMID 23688605] First report of warfarin dose requirements in patients possessing the CYP2C9*12 allele.