Kisspeptin levels in women miscarrying longer than 21 days after the blood test were higher than the other miscarriage groups, but significantly lower than the group that did not miscarry (kisspeptin in picomoles per liter: 951 ± 716 miscarriage > 21 d, P < .001 vs no miscarriage) (Figure 3A). The gene discussed is KISS1; the disease is Miscarriage.