CYP2D6*62 is assigned no function based on limited evidence. CYP2D6*62 has been described in a subject with reduced enzyme activity with a sparteine substrate (17460029). Multiple in vitro studies found CYP2D6*62 had nondetectable enzyme activity with multiple substrates (17460029, 24647041, 30366777). CYP2D6*62 is defined by a SNP which disrupts heme incorporation resulting in a nonfunctional protein. Therefore, consensus among experts was no function with an activity value of 0 based on limited evidence.