I wrote about CYP2D6, which refers to a gene that codes for a biologic molecule involved in the breakdown of tamoxifen, about a year ago. Since then it has not become standard of care to order this on patients taking tamoxifen, but my desire to do so has increased. Routine testing is not yet recommended, according to those in the know.
We refer to women who have two normal copies of this gene as having the "wild-type," which means normal type for the breakdown of...
