Al-Khan et al. (2020) [171] examined hyperglycosylated hCG (h-hCG), decorin, and IL-8 in the maternal plasma from five groups, comprising (1) normal term controls, (2) placenta previa controls, and cases of (3) placenta increta/percreta without placenta previa, (4) placenta previa increta/percreta, and (5) placenta previa accrete; they found no significant differences of these markers in the various PAS groups from the control groups. Here, DCN is linked to placenta praevia.