A Phase II Study of the Anti-PDL1 Antibody Atezolizumab, Bevacizumab and Acetylsalicylic Acid to Investigate Safety and Efficacy of This Combination in Recurrent Platinum-resistant Ovarian, Fallopian Tube or Primary Peritoneal Adenocarcinoma
A Phase II Study of the Anti-PDL1 Antibody Atezolizumab, Bevacizumab and Acetylsalicylic Acid to Investigate Safety and Efficacy of This Combination in Recurrent Platinum-resistant Ovarian, Fallopian Tube or Primary Peritoneal Adenocarcinoma
This is a randomized phase II study, aimed at evaluating the efficacy (through progression free survival at 6 months) and safety of 5 different treatments involving atezolizumab, bevacizumab and/or acetylsalicylic acid in advanced recurrent platinum-resistant ovarian cancer patients in order to select the optimal treatments for further development in Phase III.
Inclusion Criteria:
Recurrent, histologically proven, platinum-resistant, epithelial ovarian, fallopian tube and primary peritoneal cancer in advanced or metastatic stage. Histological diagnosis by image guided biopsy, laparoscopy or laparotomy. Tumors diagnosed on cytology only and borderline tumors are excluded.
At least one lesion accessible to biopsy without putting patient at risk
WHO PS: 0-2 for patients having received no more than two previous lines of therapy. WHO PS: 0-1 for patients having received >2 previous lines of therapy
Prior chemotherapy or bevacizumab:
Any number of platinum-based chemotherapy lines are allowed but a maximum of 2 previous non-platinum containing lines
Prior treatment with bevacizumab or other targeted agents against Vascular Endothelial Growth Factor (VEGF) or VEGF receptor is allowed, but at least 18 weeks must have elapsed since their last administration
Eligible patients with ≤ 2 previous treatment lines must have been previously exposed to bevacizumab or other targeted agents against VEGF or VEGF receptor
Patients may have had prior therapy providing the following conditions are met:
Radiation therapy: wash-out period of 14 days prior to the first study treatment; exception: single fraction radiotherapy with the indication of pain control
Systemic anti-tumor therapy: wash-out period of 21 days prior to the first study treatment
Recovery from any toxic effects of prior therapy to ≤ Grade 1 per the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE v4.03) except fatigue or alopecia.
Exclusion criteria:
Age <18 years
Life expectancy of < 12 weeks
No adequate hematologic and end organ function
Use of acetylsalicylic acid, NSAIDs or other COX-2 inhibitors that cannot be stopped at baseline and for the whole duration of the study.
Badalona, Spain