SERPINE1 and myeloid sarcoma: The meta-analysis, which also included the results from a Finnish study [11], confirmed the significant risk for MS among PAI-1 5G5G homozygotes (OR = 1.33, 95% CI 1.06–1.67, z = 2.450, P = 0.014, Pheterogeneity = 0.143; Figure 2) compared to the carriers of the 4G allele.