Our result confirm that JAK2 rs12343867 CC and TERT rs2736100 CC are strongly correlated with PV predisposition, as was previously established, but contrary to other reports, we did not find the association between OBFC1 rs9420907 CC genotype nor C allele and PV predisposition (Jones et al. 2009; Olcaydu et al. 2009; Anelli et al. 2018). This evidence concerns the gene JAK2 and acquired polycythemia vera.