P2RY12 and myeloid sarcoma: The relative expression of mRNA transcripts for the P2RY12 gene in blood platelets obtained from patients with SP MS was increased approximately 6-fold (p < 0.001) in comparison to the control group (2−ΔCt was 2.82 × 10−4 ± 2.16 × 10−4 in SP MS vs. 0.47 × 10−4 ± 0.27 × 10−4 in control) (Figure 7a).