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. Author manuscript; available in PMC: 2011 Sep 1.
Published in final edited form as: Pharmacogenet Genomics. 2009 Dec;19(12):965–971. doi: 10.1097/FPC.0b013e3283333b80

Table 1.

Pharmacogenomics-based dose initiation algorithm.14

Factor Dose adjustment
Base Dose 5.67 mg/day
AGE (yrs) − 0.05*(AGE-61)
WT (lbs) + 0.01*(WT-191)
CYP2C9 (each *2) − 1.04*(no. of *2)
CYP2C9 (each *3) − 1.14*(no. of *3)
VKORC1 (GG) + 1.85
VKORC1 (AA) − 2.33

CYP2C9 adjustments as compared to *1/*1

VKORC1 adjustments as compared to AG

Minimum dose 0.5 mg/day