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Table 1 Predicted CYP2D6 enzyme function based upon the activity score derived from SNV identification

From: Multiplex SNaPshot—a new simple and efficient CYP2D6 and ADRB1 genotyping method

Predicted CYP2D6 enzyme function

Activity score

Poor metabolizer (PM)

0

Intermediate metabolizer (IM)

0.5

Extensive metabolizer (EM)

1.0–2.0

Ultra-rapid metabolizer (UM)

>2.0

  1. Some genes have partial functionality based upon in vitro enzyme activity for specific substrates. This table is adapted from Crews et al. and Gaedigk et al. [1, 6]