Haugen and coworkers [77] analyzed the level of resistin in placental tissue and maternal plasma in relation to the occurrence of preeclampsia and reported that pre-eclamptic mothers plasma’s resistin concentration (5.7 ± 0.4 ng/mL) was significantly higher than for physiological pregnancy (4.7 ± 0.3 ng/mL). The gene discussed is RETN; the disease is preeclampsia.