PCR sequencing reaction was performed as previously described [22 (link)]. Amplified products were purified using the PCR Purification Kit (Qiagen) according to the manufactures instruction. Sequencing was performed using ABI310 Genetic Analyzer (Applied Biosystems), and data were analyzed using DNA Sequencing Analysis Software v.5.2.0. Endonuclease restriction analysis of DNMT3A R882H mutation was performed using Fnu4HI (New England Biolabs) as previously reported [22 (link)].
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