As shown in the univariate analyses (Table 2), the absence of radiologically visible pleural effusion (P = 0.006), ascites (P = 0.003), retroperitoneal lymph nodes (P = 0.012), omental caking (P = 0.003), peritoneal thickening (P = 0.001), and significant extrapelvic tumor (P = 0.001) together with unilateral ovarian tumor (P = 0.001), largest tumor diameter <60 mm (P = 0.037), serum CA-125 levels of ≤370 U/mL (P = 0.001), and hemoglobin levels of ≤10.5 g/dL (P = 0.096) were the likely predictors of OTR during PDS. This evidence concerns the gene MUC16 and neoplasm.