QuanTAS-PCR
The quantitative PCR method developed in this study consists of two PCR assays; a mutation-specific assay and an exon 9 copy number normalising reference assay (as already described above). For the detection of the JAK2 exon 14 V617F mutation, the mutant allele-specific competitive blocker assay amplifies only the mutant allele. The JAK2 V617F mutation PCR assay was designed complementary to the sense strand for the region framing the V617F mutation on JAK2 exon 14. It consists of three oligonucleotides. The first is a mutant allele-specific forward primer JAK2_Ex14_Mut_F: 5′-CTTACTCTCGTCTCCACAGAA-3′ (where the bold “A” marks the position of the V617F nucleotide substitution). The second is the reverse primer JAK2_Ex14_R: 5′-TTCCTTAGTCTTTCTTTGAAGCAG-3′ resulting in an amplicon that is 101 bp in length. The third is a blocker oligonucleotide with a dideoxycytidine (ddC) at its 3′ end: JAK2_Ex14_WT_Blocker_F: 5′-CTTACTCTCGTCTCCACAGA-ddC-3′ (Sigma Aldrich, St. Louis, MO, USA).