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Efficacy and safety of anti-PD-1 antibody (Nivolumab: BMS-936558, ONO-4538) in patients with platinum-resistant ovarian cancer.
Abstracts that were granted an exception in accordance with ASCO's Conflict of Interest Policy are designated with a caret symbol (^).
Background: Programmed death-1 (PD-1) is a co-inhibitory receptor expressed on activated T cells which regulates antitumor immunity. Nivolumab is a fully-humanized IgG4 that blocks the engagement of PD-1 by PD-1 ligands. Here we report the first trial for clinical application of nivolumab in ovarian cancer patients. Methods: Nivolumab was administered every 2 weeks to patients with advanced or relapsed, platinum–resistant ovarian cancer, at the doses of 1 or 3 mg/kg during two cohort examination (10 patients each). The phase II efficacy trial defined 1st endpoint of response rate, and second endpoints of safety, and disease control rate. Patients receivednivolumab up to 6 cycles (4 doses/cycle) of treatment or until PD or disease progression. Response rate was assessed by RECIST v1.1, and adverse events were evaluated by CTCAE v4.0. The data were cut-off on January 1, 2014. Results: Fifteen patients were treated with nivolumab (1 mg/kg: n=10, 3mg/kg: n=5), and evaluated. Median duration of therapy was 14 wks. There was one patient who had severe adverse drug reaction with fever, disorientation and gait disturbance. Clinical response rates were shown in Table. At the time of data cut off, one of the three partial responders had responses for 5 months, and the other two were on study with response for 4 and 10 months. Conclusions:Nivolumab at 1 mg/kg cohort is well tolerated and has encouraging clinical efficacy for advanced or relapsed, platinum-resistant ovarian cancer patients. 3 mg/kg cohort is now under investigation. Clinical trial information: UMIN000005714.
Abbreviations: RR: response rate; CR+PR; DCR: disease control rate; CR+PR+SD.
Abstracts by Junzo Hamanishi:
Specific gene signatures and oligo clonal expansion of b cell repertoire with responders of anti-PD-1 antibody, nivolumab for ovarian cancer: Novel predictive biomarkers.Meeting: 2016 ASCO Annual Meeting | Abstract No: 5513Category: Gynecologic Cancer - Ovarian Cancer
Meeting: 2015 ASCO Annual Meeting
| Abstract No: 5570
Category: Gynecologic Cancer - Ovarian Cancer