2.1.1.67 238G>C TPMT variant 686167 2.1.1.67 238G>C TPMT variant, inactivating mutation in exon 5 686507 2.1.1.67 460G>A TPMT variant 686167 2.1.1.67 460G>A TPMT variant, inactivating mutation in exon 7 686507 2.1.1.67 460G>A/719A>G TPMT*3A polymorphism, low or no TPMT activity 686574 2.1.1.67 539A>T TPMT variant 686167 2.1.1.67 719A>G TPMT variant 686167 2.1.1.67 719A>G TPMT variant, inactivating mutation in exon 10 686507 2.1.1.67 A154T 460G>A sequence variant of the TPMT gene, location exon 7, amino acid change A154T 686157 2.1.1.67 A154T mutant shows decreased TPMT activity 706092