PF4V1 and endometrial cancer: Sommella et al. (2022) reported that in a multivariate logistic regression model, PF4V1 (platelet factor 4 variant 1), APOE (apolipoprotein E) and HBD (haemoglobin subunit delta) had a combined AUC of 0.84, sensitivity of 82.9 % and specificity of 71.4 % to identify endometrial cancer [20].