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| Position | Nucleotide change | Amino acid change | Allele frequency | Comments | |
|---|---|---|---|---|---|
| *1 | - | - | - | 38 / 50 | |
| *2 | 680 (Exon1) | TGCGT (A>C) CTCCG | Y227S | 9 / 50 | SRS2 |
| *3 | 799 (Exon1) | AGGAG (C>A) ACTAC | H267N | 11 / 50 | |
| *4 | 1229 (Exon5) | GCAGG (T>C) CAATC | V410A | 2 / 50 | |
| *5 | 1381 (Exon6) | TGGCC (A>G) AGTGG | K461E | 3 / 50 |
Mutation site of CYP1A2*2 is located in SRS2 (possible substrate-recognition site 2).
