Clinical trials

This is a prospective, open-label, exploratory clinical study to evaluate the safety and preliminary efficacy of allogeneic natural killer (NK) cell injection combined with standard maintenance therapy in patients with locally advanced or metastatic solid tumors. The study consists of three cohorts: Cohort 1 (advanced non-squamous NSCLC with NK cells + PD-(L)1 inhibitor + pemetrexed), Cohort 2 (advanced colorectal adenocarcinoma with NK cells + cetuximab/bevacizumab + capecitabine), and Cohort 3 (lymphodepletion exploration cohort with fludarabine + cyclophosph preconditioning followed by NK cells + PD-(L)1 inhibitor + pemetrexed).

Study Methods: The trial consists of two phases, both including a placebo control. Phase Ia (single-dose, dose-escalation): Three dose groups (low, medium, high) are set. This is a multicenter, randomized, double-blind, placebo-controlled, single-dose, dose-escalation trial. Dose escalation to the next level is permitted only after safety assessment at 28 days post-dose in the previous group. Phase Ib (multiple-dose): Based on Phase Ia results, two dose groups will be selected. The product is administered on Day 0, Day 7, and Day 14 (3 doses total). The trial remains randomized, double-blind, and placebo-controlled.