Circulating Tumor DNA as an Early Marker of Recurrence and Treatment Efficacy in Ovarian Carcinoma

Inclusion Criteria: 1. Patient with suspicion of ovarian or tubar epithelial cancer, or peritoneal primitive carcino-ma, without previous treatment for ovarian malignancy. 2. Indication of preoperative and/or adjuvant chemotherapy. 3. Age ≥ 18 years old. 4. Patient affiliated to the ''National security'' regimen or beneficiary of this regimen 5. Signed written informed consent prior to any screening procedures being performed Non inclusion Criteria: 1. Contraindication to surgical assessment. 2. Pathological diagnosis of mucinous carcinoma. 3. History of concurrent malignancy or malignancy within 5 years before study enrollment, (with the exceptions of adequately treated non melanomatous skin cancer or curatively re-sected noninvasive cervical cancer). 4. Assessment by the investigator as being unable or unwilling to comply with the require-ments of the protocol. 5. Patient in urgency situation, adult under legal protection, or unable to give his consent. Exclusion Criteria after histological exam: Any diagnostic that is not ovarian or tubar epithelial cancer, or peritoneal primitive carcinoma.