Have questions? Visit https://www.reddit.com/r/SNPedia

rs1800462(C;G)

From SNPedia

detoxifying ability may be diminished
Is agenotype
ofrs1800462
GeneTPMT
Chromosome6
Position18,143,724
mentionedby
Magnitude2.5
ReputeBad
Geno Mag Summary
(C;C) 3.5 incapable of detoxifying
(C;G) 2.5 detoxifying ability may be diminished
(G;G) 0 normal for 23andMe

a carrier for rs1800462(G;G) which may may be diminish you detoxifying ability for Thiopurine medications.

http://blog.23andme.com/health-traits/do-you-know-how-youll-respond-to-thiopurine-medications/