Participants will receive the following interventions because they are enrolled in the study: blood sample collection
* at diagnosis, before chemotherapy (pre-CT)
* after chemotherapy (post-ct)
Two additional blood samples will be collected in each patient : one at diagnosis and one at the end of chemotherapy.
The aim of this study is to describe the immunological profile at diagnosis in terms of phenotypic : PBMC in peripheral blood, TILs in ascites and in carcinomatosis, in patients treated for peritoneal carcinomatosis of ovarian or tubal origin. The treatment has to be a surgery and an adjuvant chemotherapy, or a neo-adjuvant chemotherapy followed by a surgery +/- adjuvant chemotherapy.
Other objectives of the study include:
* Evaluate the association between the immunological profile at diagnosis and the characteristics of the disease at diagnosis (histological type, extension)
* Evaluate the prognostic value of the immunological profile at diagnosis in terms of clinical response to neoadjuvant chemotherapy (for patients with interval surgery)
* Evaluate the polarization of the immune response induced by chemotherapy, describing the phenotypic changes in the different types of samples (blood, +/- ascites, +/- carcinomatosis) after chemotherapy in comparison with samples at diagnostic
* Evaluate the association between these immunological phenotypic changes and the clinical response to chemotherapy in patients receiving neoadjuvant chemotherapy
* Collect biological material for peritoneal carcinomatosis for subsequent biological analyzes
