Acetylation
From SNPedia
At a minimum, these SNPs are known to be related, and others may also be
Acetylation is an important route of metabolism and elimination for a large number of clinically important drugs, including isoniazid, dapsone, procainamide, sulfonamides, hydralazine, and phenelzine. (definition of Science Direct, Clinical and Translational Science (Second Edition), 2017)
[PMID 11437234] Histone acetylation and disease.