Clinical trials

This is an open-label, single-arm, dose-escalation Phase I clinical study designed to evaluate the safety, tolerability, pharmacokinetic profile, and preliminary efficacy of NK Cell Injection in patients with advanced solid tumors. Eligible participants who have signed written informed consent will be screened and, if qualified, assigned a enrollment number and sequentially assigned to the designated dose group. The study employs a traditional "3+3" dose-escalation design. Each dose group enrolls at least 3 participants, with each participant receiving only one corresponding dose level, until the MTD or RP2D is determined. The study consists of four periods: Screening Period, Treatment Period (including lymphodepleting chemotherapy), Safety Follow-up Period, and Survival Follow-up Period.

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 5 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), Cohort 3 (lymphodepletion exploration cohort with fludarabine + cyclophosph preconditioning followed by NK cells + PD-(L)1 inhibitor + pemetrexed), Cohort 4 (advanced HCC with NK cells + VEGF + PD-(L)1), and Cohort 5 (advanced GC with NK cells + PD-(L)1 + S-1).

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.