HLA-G and endometriosis: Besides, sHLA-G levels are reported to be associated with oocyte competence (121, 122), endometriosis progression (123), pregnancy-related conditions such as SGA neonates (124), GDM (125), advanced labor (126), preterm premature rupture of membranes (127), intrauterine growth retardation (IUGR) (112), and preeclampsia (113, 128–130).