Population-Based Modeling to Predict Human PK/PD of TAK-500, an Anti-CCR2 Antibody-Drug Conjugate for First-in-Human Study in Cancer Patients
Abstract
TAK-500 is a novel immune cell-directed antibody-drug conjugate (iADC) composed of TAK-202, an anti-CCR2 monoclonal antibody, conjugated to the STING agonist dazostinag (TAK-676), and is designed to stimulate antitumor immunity by reprogramming CCR2-positive monocytes. To support clinical translation, we developed a population pharmacokinetic (PK)-receptor occupancy (RO) model that leveraged both preclinical and clinical data from the parental antibody. In cynomolgus monkeys, TAK-500 displayed nonlinear, target-mediated disposition with dose-dependent CCR2 RO and monocyte redistribution. A 2-compartment PK model confirmed that TAK-500 total antibody and TAK-202 exhibited comparable PK profiles in monkeys, suggesting translational concordance. In humans, TAK-202 demonstrated nonlinear PK with greater-than-dose-proportional exposure, which was not captured by allometric scaling from monkeys but provided a critical basis for model development. We established a population PK-RO model of TAK-202 in humans and integrated it with cynomolgus TAK-500 data to project human PK and RO across doses of 50-500 μg/kg. Simulations (n = 1000) predicted dose‑dependent decreases in clearance, from 40 to 31 mL/h for total antibody and from 148 to 124 mL/h for conjugated payload (median values in a 70‑kg adult), respectively. Corresponding terminal half-lives were estimated at 114-118 h for total antibody and 30-60 h for conjugated payload. These findings demonstrate the feasibility of predicting…
How strong is the evidence?
Evidence Hub reads this as a clinical trial, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence. Reported size: 1,000 participants or records.
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