Alleles with content annotated in PharmGKB but not included in PharmVar (*5G, *5J, *5M, *5U, *6J, *7G, *17) are added using the the original Database of Arylamine N-Acetyltransferases (NATs, http://nat.mbg.duth.gr/Human%20NAT2%20alleles_2013.htm) definitions. This results in the inclusion of 2 synonymous SNPs (added in grey). PharmVar NAT2 core alleles do not include these SNPs although those are part of many NAT2 suballeles and the cells in the core alleles are therefore left blank in this file (see PharmVar for all transitioned NAT2 suballeles and about what is included in a core allele definition). Additionally, with transitioning to PharmVar, the change at p.268 is now according to the reference sequence R268K (see above information). Therefore, original definitions that include K268R will have a blank cell, while alleles that did not include the SNP will now have an "A" at this position.
Positions added: 
226T>G part of *7G
434A>C part of *17
282C>T and 481C>T synonymous SNPs
*5G has K268R - 803G =ref at this position, therefore blank
*5J has 803A 
*5M has K268R - 803G =ref at this position, therefore blank
*5U has K268R - 803G =ref at this position, therefore blank
*6J has 803A 
*7G has 803A 
*17 has 803A