The relative levels and ROC analysis of circ-0001068 in the exosomes of serum from healthy volunteers (HV) and ovarian cancer (OC) patients. (A) The relative levels of circ-0001068 in the exosomes of serum from 43 healthy volunteers (HV) and 85 ovarian cancer patients (OC). (B) the ROC analysis of circ-0001068. ***P < 0.001.