Considering mutations in the TET2 gene in isolation, a positive association existed between thrombotic event and the presence of a pathogenic TET2 mutation (p = 0.031, OR: 3.56, 95% CI: 1.15–11.83, Fisher’s exact test; Figure 3): 65.0% of PV patients with an event harbored a TET2 mutation vs. 35.0% of PV patients without an event. The gene discussed is TET2; the disease is acquired polycythemia vera.