John D Powderly, Martin E Gutierrez, Ani S Balmanoukian, Paul E Hoyle, Zhiwan Dong, Lulu Cheng, Xuejun Chen, John E Janik, Nawel Bourayou, Omid Hamid
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引用次数: 0
Abstract
Background: Immune checkpoint receptor lymphocyte-activation gene 3 (LAG-3) is an activation marker for CD4+ and CD8+ T cells. Prolonged LAG-3 expression downregulates T-cell activation; therefore, LAG-3 blockade may restore antitumor immune response. INCAGN02385 is a humanized monoclonal LAG-3-targeting antibody. This first-in-human phase I study evaluated INCAGN02385 for advanced/metastatic solid tumors.
Materials and methods: In this dose escalation study, patients with select immunogenic advanced or metastatic solid tumors received a single INCAGN02385 infusion (25 mg to 750 mg) every 2 weeks (Q2W). Objectives included evaluation of safety/tolerability, maximum tolerated dose (MTD) (primary), pharmacokinetics (PK), antitumor activity (secondary).
Results: Twenty-two patients were enrolled and treated. Sixty-four percent had received ≥ 3 lines of systemic therapy. Sixty-eight percent had received prior immune checkpoint inhibitor (ICI) therapy; anti-programmed death protein-1/anti-programmed death ligand-1, 68%, anti-cytotoxic T-lymphocyte-associated protein-4 therapy, 18%. No dose-limiting toxicities occurred, and an MTD was not reached. Sixteen patients (73%) experienced treatment-related adverse events (TRAEs), most frequently fatigue (n = 7). Except for one grade 3 lymphopenia TRAE, all were grade 1/2 severity. Two patients experienced sponsor-assessed immune-related AEs (pneumonitis, peripheral sensory neuropathy [n = 1] patient each). INCAGN02385 PK parameters were dose proportional across all doses evaluated. Six patients achieved stable disease lasting ≥ 56 days (range, 57-413 days).
Conclusions: INCAGN02385 exhibited linear PK and preliminary evidence of disease control in this heavily pretreated population, consistent with other LAG-3-targeting monotherapies. A 350-mg Q2W dose was selected for phase II studies that will focus on combinations of INCAGN02385 with other ICIs.
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The Oncologist® is dedicated to translating the latest research developments into the best multidimensional care for cancer patients. Thus, The Oncologist is committed to helping physicians excel in this ever-expanding environment through the publication of timely reviews, original studies, and commentaries on important developments. We believe that the practice of oncology requires both an understanding of a range of disciplines encompassing basic science related to cancer, translational research, and clinical practice, but also the socioeconomic and psychosocial factors that determine access to care and quality of life and function following cancer treatment.
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