For the comparisons male vs female, no-stimulation vs stimulation with oxytocin and initiation with PtLb vs PPROM, the number of DMPs unique for the comparison groups are 123, 97 and 42 respectively (Fig. 2a, Additional file 2: Table S2, Additional file 4: Table S4a, Additional file 5: Table S5a, Additional file 6). This evidence concerns the gene OXT and preterm premature rupture of the membranes.