The aim of the study is to quantify the ex vivo induction of apoptosis by ABT-737 + association platinum in samples exposed and demonstrate the value of this combination compared to the agents used alone.

Inclusion Criteria:

• Patient aged over 18 years
• Ovarian cancer patients with at least five tumor samples does not affect the diagnosis, based on other tumor masses
• Surgery of any initial chemotherapy naive
• Patient information and signed informed consent

Exclusion Criteria:

• A person deprived of liberty or under guardianship
• Insufficient tumor samples of ovarian cancer.

Patient, any chemotherapy naive or ovarian surgery, ovarian cancer with at least five tumor samples does not affect the diagnostic