Ontology highlight
ABSTRACT: Purpose
Anti-KIR monoclonal antibodies (mAbs) can enhance the antitumor responses of natural killer (NK) cells. We evaluated the safety of the anti-KIR2D mAb lirilumab in patients with various cancers.Experimental design
Thirty-seven patients with hematological malignancies (n = 22) or solid tumors (n = 15) were included in the study. Dose escalation (0.015 to 10 mg/kg) was conducted following a 3 + 3 design. Patients were scheduled to receive four cycles of treatment. In a second (extension) phase 17 patients were treated at 0.015 (n = 9) or 3 mg/kg (n = 8).Results
No dose-limiting toxicity was recorded. The most frequent lirilumab-related adverse events were pruritus (19%), asthenia (16%), fatigue (14%), infusion-related reaction (14%), and headache (11%), mostly mild or moderate. Pharmacokinetics was dose-dependent and linear, with minimal accumulation resulting from the 4-weekly repeated administrations. Full KIR occupancy (>95%) was achieved with all dosages, and the duration of occupancy was dose-related. No significant changes were observed in the number or distribution of lymphocyte subpopulations, nor was any reduction in the distribution of KIR2D-positive NK cells.Conclusions
This phase 1 trial demonstrated the satisfactory safety profile of lirilumab up to doses that enable full and sustained blockade of KIR.
SUBMITTER: Vey N
PROVIDER: S-EPMC5915148 | biostudies-literature | 2018 Apr
REPOSITORIES: biostudies-literature
Vey Norbert N Karlin Lionel L Sadot-Lebouvier Sophie S Broussais Florence F Berton-Rigaud Dominique D Rey Jérôme J Charbonnier Aude A Marie Delphine D André Pascale P Paturel Carine C Zerbib Robert R Bennouna Jaafar J Salles Gilles G Gonçalves Anthony A
Oncotarget 20180403 25
<h4>Purpose</h4>Anti-KIR monoclonal antibodies (mAbs) can enhance the antitumor responses of natural killer (NK) cells. We evaluated the safety of the anti-KIR2D mAb lirilumab in patients with various cancers.<h4>Experimental design</h4>Thirty-seven patients with hematological malignancies (<i>n</i> = 22) or solid tumors (<i>n</i> = 15) were included in the study. Dose escalation (0.015 to 10 mg/kg) was conducted following a 3 + 3 design. Patients were scheduled to receive four cycles of treatme ...[more]