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Copyright ©2006 Baishideng Publishing Group Co.
World J Gastroenterol. Jun 21, 2006; 12(23): 3657-3667
Published online Jun 21, 2006. doi: 10.3748/wjg.v12.i23.3657
Table 1 Interpretation by PCR based methods of TPMT activity
GenotypePCRRisk of hematopoietictoxicity
238G/238G*1/*1238 GG-7%
460G/460G460 GG
719A/719A719 AA
238G/238G*1/*3A238GG-35%
460A/460A460GA
719A/719G719AG
238G/238G*1/*3B238GG-35%
460G/460A460GA
719A/719A719AA
238G/238G*1/*3C238GG-35%
460G/460G460GG
719A/719G719AG
238G/238G*3B/*3C238GG-100%
460G/460G460GG
719A/719G719AG
238G/238G*3A/*3C238GG-100%
460A/460G460GA
719G/719G719GG
238G/238G*3A/*3B238GG-100%
460A/460A460AA
719G/719A719AG
Table 2 NAT2 phenotypes and genotypes
MutationsAllele designationPhenotype
NoneNAT2*4 (wild-type)normal
T341C, C481T, A803GNAT2*5B (r3,S1a)Slow
C282T, G590ANAT2*6A (M2)Slow
T341C, C481TNAT2*5A (M1)Slow
T341C, CA803GNAT2*5C (S1c)Slow
C282T, G857ANAT2*7B (M3)Slow
C282TNAT2*13 (S4)
G590ANAT2*6B (R2)Unknown
G191ANAT2*14A (M4)Slow
A803GNAT2*12ARapid