The median PFS times were 16.1 months (high PIWIL2) and 64.5 months (low PIWIL2) (HR = 3.008, 95% CI = 1.621 to 5.582, p < 0.0001), suggesting that PIWIL2 expression might be a promising molecular marker of MDS prognosis. The gene discussed is PIWIL2; the disease is myelodysplastic syndrome.